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2024-04-27 03:22:35 -05:00
parent c95d41c62e
commit a8acb53fc2
28 changed files with 2022 additions and 313 deletions
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17
system/sensord/SConscript Normal file
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Import('env', 'arch', 'common', 'cereal', 'messaging')
sensors = [
'sensors/i2c_sensor.cc',
'sensors/bmx055_accel.cc',
'sensors/bmx055_gyro.cc',
'sensors/bmx055_magn.cc',
'sensors/bmx055_temp.cc',
'sensors/lsm6ds3_accel.cc',
'sensors/lsm6ds3_gyro.cc',
'sensors/lsm6ds3_temp.cc',
'sensors/mmc5603nj_magn.cc',
]
libs = [common, cereal, messaging, 'capnp', 'zmq', 'kj', 'pthread']
if arch == "larch64":
libs.append('i2c')
env.Program('sensord', ['sensors_qcom2.cc'] + sensors, LIBS=libs)

0
system/sensord/__init__.py Normal file
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313
system/sensord/pigeond.py
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#!/usr/bin/env python3
import sys
import time
import signal
import serial
import struct
import requests
import urllib.parse
from datetime import datetime
from typing import List, Optional, Tuple
from cereal import messaging
from openpilot.common.params import Params
from openpilot.common.swaglog import cloudlog
from openpilot.system.hardware import TICI
from openpilot.common.gpio import gpio_init, gpio_set
from openpilot.system.hardware.tici.pins import GPIO
UBLOX_TTY = "/dev/ttyHS0"
UBLOX_ACK = b"\xb5\x62\x05\x01\x02\x00"
UBLOX_NACK = b"\xb5\x62\x05\x00\x02\x00"
UBLOX_SOS_ACK = b"\xb5\x62\x09\x14\x08\x00\x02\x00\x00\x00\x01\x00\x00\x00"
UBLOX_SOS_NACK = b"\xb5\x62\x09\x14\x08\x00\x02\x00\x00\x00\x00\x00\x00\x00"
UBLOX_BACKUP_RESTORE_MSG = b"\xb5\x62\x09\x14\x08\x00\x03"
UBLOX_ASSIST_ACK = b"\xb5\x62\x13\x60\x08\x00"
def set_power(enabled: bool) -> None:
gpio_init(GPIO.UBLOX_SAFEBOOT_N, True)
gpio_init(GPIO.GNSS_PWR_EN, True)
gpio_init(GPIO.UBLOX_RST_N, True)
gpio_set(GPIO.UBLOX_SAFEBOOT_N, True)
gpio_set(GPIO.GNSS_PWR_EN, enabled)
gpio_set(GPIO.UBLOX_RST_N, enabled)
def add_ubx_checksum(msg: bytes) -> bytes:
A = B = 0
for b in msg[2:]:
A = (A + b) % 256
B = (B + A) % 256
return msg + bytes([A, B])
def get_assistnow_messages(token: bytes) -> List[bytes]:
# make request
# TODO: implement adding the last known location
r = requests.get("https://online-live2.services.u-blox.com/GetOnlineData.ashx", params=urllib.parse.urlencode({
'token': token,
'gnss': 'gps,glo',
'datatype': 'eph,alm,aux',
}, safe=':,'), timeout=5)
assert r.status_code == 200, "Got invalid status code"
dat = r.content
# split up messages
msgs = []
while len(dat) > 0:
assert dat[:2] == b"\xB5\x62"
msg_len = 6 + (dat[5] << 8 | dat[4]) + 2
msgs.append(dat[:msg_len])
dat = dat[msg_len:]
return msgs
class TTYPigeon():
def __init__(self):
self.tty = serial.VTIMESerial(UBLOX_TTY, baudrate=9600, timeout=0)
def send(self, dat: bytes) -> None:
self.tty.write(dat)
def receive(self) -> bytes:
dat = b''
while len(dat) < 0x1000:
d = self.tty.read(0x40)
dat += d
if len(d) == 0:
break
return dat
def set_baud(self, baud: int) -> None:
self.tty.baudrate = baud
def wait_for_ack(self, ack: bytes = UBLOX_ACK, nack: bytes = UBLOX_NACK, timeout: float = 0.5) -> bool:
dat = b''
st = time.monotonic()
while True:
dat += self.receive()
if ack in dat:
cloudlog.debug("Received ACK from ublox")
return True
elif nack in dat:
cloudlog.error("Received NACK from ublox")
return False
elif time.monotonic() - st > timeout:
cloudlog.error("No response from ublox")
raise TimeoutError('No response from ublox')
time.sleep(0.001)
def send_with_ack(self, dat: bytes, ack: bytes = UBLOX_ACK, nack: bytes = UBLOX_NACK) -> None:
self.send(dat)
self.wait_for_ack(ack, nack)
def wait_for_backup_restore_status(self, timeout: float = 1.) -> int:
dat = b''
st = time.monotonic()
while True:
dat += self.receive()
position = dat.find(UBLOX_BACKUP_RESTORE_MSG)
if position >= 0 and len(dat) >= position + 11:
return dat[position + 10]
elif time.monotonic() - st > timeout:
cloudlog.error("No backup restore response from ublox")
raise TimeoutError('No response from ublox')
time.sleep(0.001)
def reset_device(self) -> bool:
# deleting the backup does not always work on first try (mostly on second try)
for _ in range(5):
# device cold start
self.send(b"\xb5\x62\x06\x04\x04\x00\xff\xff\x00\x00\x0c\x5d")
time.sleep(1) # wait for cold start
init_baudrate(self)
# clear configuration
self.send_with_ack(b"\xb5\x62\x06\x09\x0d\x00\x1f\x1f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x17\x71\xd7")
# clear flash memory (almanac backup)
self.send_with_ack(b"\xB5\x62\x09\x14\x04\x00\x01\x00\x00\x00\x22\xf0")
# try restoring backup to verify it got deleted
self.send(b"\xB5\x62\x09\x14\x00\x00\x1D\x60")
# 1: failed to restore, 2: could restore, 3: no backup
status = self.wait_for_backup_restore_status()
if status == 1 or status == 3:
return True
return False
def init_baudrate(pigeon: TTYPigeon):
# ublox default setting on startup is 9600 baudrate
pigeon.set_baud(9600)
# $PUBX,41,1,0007,0003,460800,0*15\r\n
pigeon.send(b"\x24\x50\x55\x42\x58\x2C\x34\x31\x2C\x31\x2C\x30\x30\x30\x37\x2C\x30\x30\x30\x33\x2C\x34\x36\x30\x38\x30\x30\x2C\x30\x2A\x31\x35\x0D\x0A")
time.sleep(0.1)
pigeon.set_baud(460800)
def initialize_pigeon(pigeon: TTYPigeon) -> bool:
# try initializing a few times
for _ in range(10):
try:
# setup port config
pigeon.send_with_ack(b"\xb5\x62\x06\x00\x14\x00\x03\xFF\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x01\x00\x00\x00\x00\x00\x1E\x7F")
pigeon.send_with_ack(b"\xb5\x62\x06\x00\x14\x00\x00\xFF\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x19\x35")
pigeon.send_with_ack(b"\xb5\x62\x06\x00\x14\x00\x01\x00\x00\x00\xC0\x08\x00\x00\x00\x08\x07\x00\x01\x00\x01\x00\x00\x00\x00\x00\xF4\x80")
pigeon.send_with_ack(b"\xb5\x62\x06\x00\x14\x00\x04\xFF\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x1D\x85")
pigeon.send_with_ack(b"\xb5\x62\x06\x00\x00\x00\x06\x18")
pigeon.send_with_ack(b"\xb5\x62\x06\x00\x01\x00\x01\x08\x22")
pigeon.send_with_ack(b"\xb5\x62\x06\x00\x01\x00\x03\x0A\x24")
# UBX-CFG-RATE (0x06 0x08)
pigeon.send_with_ack(b"\xB5\x62\x06\x08\x06\x00\x64\x00\x01\x00\x00\x00\x79\x10")
# UBX-CFG-NAV5 (0x06 0x24)
pigeon.send_with_ack(b"\xB5\x62\x06\x24\x24\x00\x05\x00\x04\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x5A\x63")
# UBX-CFG-ODO (0x06 0x1E)
pigeon.send_with_ack(b"\xB5\x62\x06\x1E\x14\x00\x00\x00\x00\x00\x01\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x3C\x37")
pigeon.send_with_ack(b"\xB5\x62\x06\x39\x08\x00\xFF\xAD\x62\xAD\x1E\x63\x00\x00\x83\x0C")
pigeon.send_with_ack(b"\xB5\x62\x06\x23\x28\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x56\x24")
# UBX-CFG-NAV5 (0x06 0x24)
pigeon.send_with_ack(b"\xB5\x62\x06\x24\x00\x00\x2A\x84")
pigeon.send_with_ack(b"\xB5\x62\x06\x23\x00\x00\x29\x81")
pigeon.send_with_ack(b"\xB5\x62\x06\x1E\x00\x00\x24\x72")
pigeon.send_with_ack(b"\xB5\x62\x06\x39\x00\x00\x3F\xC3")
# UBX-CFG-MSG (set message rate)
pigeon.send_with_ack(b"\xB5\x62\x06\x01\x03\x00\x01\x07\x01\x13\x51")
pigeon.send_with_ack(b"\xB5\x62\x06\x01\x03\x00\x02\x15\x01\x22\x70")
pigeon.send_with_ack(b"\xB5\x62\x06\x01\x03\x00\x02\x13\x01\x20\x6C")
pigeon.send_with_ack(b"\xB5\x62\x06\x01\x03\x00\x0A\x09\x01\x1E\x70")
pigeon.send_with_ack(b"\xB5\x62\x06\x01\x03\x00\x0A\x0B\x01\x20\x74")
pigeon.send_with_ack(b"\xB5\x62\x06\x01\x03\x00\x01\x35\x01\x41\xAD")
cloudlog.debug("pigeon configured")
# try restoring almanac backup
pigeon.send(b"\xB5\x62\x09\x14\x00\x00\x1D\x60")
restore_status = pigeon.wait_for_backup_restore_status()
if restore_status == 2:
cloudlog.warning("almanac backup restored")
elif restore_status == 3:
cloudlog.warning("no almanac backup found")
else:
cloudlog.error(f"failed to restore almanac backup, status: {restore_status}")
# sending time to ublox
t_now = datetime.utcnow()
if t_now >= datetime(2021, 6, 1):
cloudlog.warning("Sending current time to ublox")
# UBX-MGA-INI-TIME_UTC
msg = add_ubx_checksum(b"\xB5\x62\x13\x40\x18\x00" + struct.pack("<BBBBHBBBBBxIHxxI",
0x10,
0x00,
0x00,
0x80,
t_now.year,
t_now.month,
t_now.day,
t_now.hour,
t_now.minute,
t_now.second,
0,
30,
0
))
pigeon.send_with_ack(msg, ack=UBLOX_ASSIST_ACK)
# try getting AssistNow if we have a token
token = Params().get('AssistNowToken')
if token is not None:
try:
for msg in get_assistnow_messages(token):
pigeon.send_with_ack(msg, ack=UBLOX_ASSIST_ACK)
cloudlog.warning("AssistNow messages sent")
except Exception:
cloudlog.warning("failed to get AssistNow messages")
cloudlog.warning("Pigeon GPS on!")
break
except TimeoutError:
cloudlog.warning("Initialization failed, trying again!")
else:
cloudlog.warning("Failed to initialize pigeon")
return False
return True
def deinitialize_and_exit(pigeon: Optional[TTYPigeon]):
cloudlog.warning("Storing almanac in ublox flash")
if pigeon is not None:
# controlled GNSS stop
pigeon.send(b"\xB5\x62\x06\x04\x04\x00\x00\x00\x08\x00\x16\x74")
# store almanac in flash
pigeon.send(b"\xB5\x62\x09\x14\x04\x00\x00\x00\x00\x00\x21\xEC")
try:
if pigeon.wait_for_ack(ack=UBLOX_SOS_ACK, nack=UBLOX_SOS_NACK):
cloudlog.warning("Done storing almanac")
else:
cloudlog.error("Error storing almanac")
except TimeoutError:
pass
# turn off power and exit cleanly
set_power(False)
sys.exit(0)
def create_pigeon() -> Tuple[TTYPigeon, messaging.PubMaster]:
pigeon = None
# register exit handler
signal.signal(signal.SIGINT, lambda sig, frame: deinitialize_and_exit(pigeon))
pm = messaging.PubMaster(['ubloxRaw'])
# power cycle ublox
set_power(False)
time.sleep(0.1)
set_power(True)
time.sleep(0.5)
pigeon = TTYPigeon()
return pigeon, pm
def run_receiving(pigeon: TTYPigeon, pm: messaging.PubMaster, duration: int = 0):
start_time = time.monotonic()
def end_condition():
return True if duration == 0 else time.monotonic() - start_time < duration
while end_condition():
dat = pigeon.receive()
if len(dat) > 0:
if dat[0] == 0x00:
cloudlog.warning("received invalid data from ublox, re-initing!")
init_baudrate(pigeon)
initialize_pigeon(pigeon)
continue
# send out to socket
msg = messaging.new_message('ubloxRaw', len(dat), valid=True)
msg.ubloxRaw = dat[:]
pm.send('ubloxRaw', msg)
else:
# prevent locking up a CPU core if ublox disconnects
time.sleep(0.001)
def main():
assert TICI, "unsupported hardware for pigeond"
pigeon, pm = create_pigeon()
init_baudrate(pigeon)
initialize_pigeon(pigeon)
# start receiving data
run_receiving(pigeon, pm)
if __name__ == "__main__":
main()

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system/sensord/sensord
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78
system/sensord/sensors/bmx055_accel.cc Normal file
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#include "system/sensord/sensors/bmx055_accel.h"
#include <cassert>
#include "common/swaglog.h"
#include "common/timing.h"
#include "common/util.h"
BMX055_Accel::BMX055_Accel(I2CBus *bus) : I2CSensor(bus) {}
int BMX055_Accel::init() {
int ret = verify_chip_id(BMX055_ACCEL_I2C_REG_ID, {BMX055_ACCEL_CHIP_ID});
if (ret == -1) return -1;
ret = set_register(BMX055_ACCEL_I2C_REG_PMU, BMX055_ACCEL_NORMAL_MODE);
if (ret < 0) {
goto fail;
}
// bmx055 accel has a 1.3ms wakeup time from deep suspend mode
util::sleep_for(10);
// High bandwidth
// ret = set_register(BMX055_ACCEL_I2C_REG_HBW, BMX055_ACCEL_HBW_ENABLE);
// if (ret < 0) {
// goto fail;
// }
// Low bandwidth
ret = set_register(BMX055_ACCEL_I2C_REG_HBW, BMX055_ACCEL_HBW_DISABLE);
if (ret < 0) {
goto fail;
}
ret = set_register(BMX055_ACCEL_I2C_REG_BW, BMX055_ACCEL_BW_125HZ);
if (ret < 0) {
goto fail;
}
fail:
return ret;
}
int BMX055_Accel::shutdown() {
// enter deep suspend mode (lowest power mode)
int ret = set_register(BMX055_ACCEL_I2C_REG_PMU, BMX055_ACCEL_DEEP_SUSPEND);
if (ret < 0) {
LOGE("Could not move BMX055 ACCEL in deep suspend mode!");
}
return ret;
}
bool BMX055_Accel::get_event(MessageBuilder &msg, uint64_t ts) {
uint64_t start_time = nanos_since_boot();
uint8_t buffer[6];
int len = read_register(BMX055_ACCEL_I2C_REG_X_LSB, buffer, sizeof(buffer));
assert(len == 6);
// 12 bit = +-2g
float scale = 9.81 * 2.0f / (1 << 11);
float x = -read_12_bit(buffer[0], buffer[1]) * scale;
float y = -read_12_bit(buffer[2], buffer[3]) * scale;
float z = read_12_bit(buffer[4], buffer[5]) * scale;
auto event = msg.initEvent().initAccelerometer2();
event.setSource(cereal::SensorEventData::SensorSource::BMX055);
event.setVersion(1);
event.setSensor(SENSOR_ACCELEROMETER);
event.setType(SENSOR_TYPE_ACCELEROMETER);
event.setTimestamp(start_time);
float xyz[] = {x, y, z};
auto svec = event.initAcceleration();
svec.setV(xyz);
svec.setStatus(true);
return true;
}

41
system/sensord/sensors/bmx055_accel.h Normal file
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#pragma once
#include "system/sensord/sensors/i2c_sensor.h"
// Address of the chip on the bus
#define BMX055_ACCEL_I2C_ADDR 0x18
// Registers of the chip
#define BMX055_ACCEL_I2C_REG_ID 0x00
#define BMX055_ACCEL_I2C_REG_X_LSB 0x02
#define BMX055_ACCEL_I2C_REG_TEMP 0x08
#define BMX055_ACCEL_I2C_REG_BW 0x10
#define BMX055_ACCEL_I2C_REG_PMU 0x11
#define BMX055_ACCEL_I2C_REG_HBW 0x13
#define BMX055_ACCEL_I2C_REG_FIFO 0x3F
// Constants
#define BMX055_ACCEL_CHIP_ID 0xFA
#define BMX055_ACCEL_HBW_ENABLE 0b10000000
#define BMX055_ACCEL_HBW_DISABLE 0b00000000
#define BMX055_ACCEL_DEEP_SUSPEND 0b00100000
#define BMX055_ACCEL_NORMAL_MODE 0b00000000
#define BMX055_ACCEL_BW_7_81HZ 0b01000
#define BMX055_ACCEL_BW_15_63HZ 0b01001
#define BMX055_ACCEL_BW_31_25HZ 0b01010
#define BMX055_ACCEL_BW_62_5HZ 0b01011
#define BMX055_ACCEL_BW_125HZ 0b01100
#define BMX055_ACCEL_BW_250HZ 0b01101
#define BMX055_ACCEL_BW_500HZ 0b01110
#define BMX055_ACCEL_BW_1000HZ 0b01111
class BMX055_Accel : public I2CSensor {
uint8_t get_device_address() {return BMX055_ACCEL_I2C_ADDR;}
public:
BMX055_Accel(I2CBus *bus);
int init();
bool get_event(MessageBuilder &msg, uint64_t ts = 0);
int shutdown();
};

88
system/sensord/sensors/bmx055_gyro.cc Normal file
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#include "system/sensord/sensors/bmx055_gyro.h"
#include <cassert>
#include <cmath>
#include "common/swaglog.h"
#include "common/util.h"
#define DEG2RAD(x) ((x) * M_PI / 180.0)
BMX055_Gyro::BMX055_Gyro(I2CBus *bus) : I2CSensor(bus) {}
int BMX055_Gyro::init() {
int ret = verify_chip_id(BMX055_GYRO_I2C_REG_ID, {BMX055_GYRO_CHIP_ID});
if (ret == -1) return -1;
ret = set_register(BMX055_GYRO_I2C_REG_LPM1, BMX055_GYRO_NORMAL_MODE);
if (ret < 0) {
goto fail;
}
// bmx055 gyro has a 30ms wakeup time from deep suspend mode
util::sleep_for(50);
// High bandwidth
// ret = set_register(BMX055_GYRO_I2C_REG_HBW, BMX055_GYRO_HBW_ENABLE);
// if (ret < 0) {
// goto fail;
// }
// Low bandwidth
ret = set_register(BMX055_GYRO_I2C_REG_HBW, BMX055_GYRO_HBW_DISABLE);
if (ret < 0) {
goto fail;
}
// 116 Hz filter
ret = set_register(BMX055_GYRO_I2C_REG_BW, BMX055_GYRO_BW_116HZ);
if (ret < 0) {
goto fail;
}
// +- 125 deg/s range
ret = set_register(BMX055_GYRO_I2C_REG_RANGE, BMX055_GYRO_RANGE_125);
if (ret < 0) {
goto fail;
}
fail:
return ret;
}
int BMX055_Gyro::shutdown() {
// enter deep suspend mode (lowest power mode)
int ret = set_register(BMX055_GYRO_I2C_REG_LPM1, BMX055_GYRO_DEEP_SUSPEND);
if (ret < 0) {
LOGE("Could not move BMX055 GYRO in deep suspend mode!");
}
return ret;
}
bool BMX055_Gyro::get_event(MessageBuilder &msg, uint64_t ts) {
uint64_t start_time = nanos_since_boot();
uint8_t buffer[6];
int len = read_register(BMX055_GYRO_I2C_REG_RATE_X_LSB, buffer, sizeof(buffer));
assert(len == 6);
// 16 bit = +- 125 deg/s
float scale = 125.0f / (1 << 15);
float x = -DEG2RAD(read_16_bit(buffer[0], buffer[1]) * scale);
float y = -DEG2RAD(read_16_bit(buffer[2], buffer[3]) * scale);
float z = DEG2RAD(read_16_bit(buffer[4], buffer[5]) * scale);
auto event = msg.initEvent().initGyroscope2();
event.setSource(cereal::SensorEventData::SensorSource::BMX055);
event.setVersion(1);
event.setSensor(SENSOR_GYRO_UNCALIBRATED);
event.setType(SENSOR_TYPE_GYROSCOPE_UNCALIBRATED);
event.setTimestamp(start_time);
float xyz[] = {x, y, z};
auto svec = event.initGyroUncalibrated();
svec.setV(xyz);
svec.setStatus(true);
return true;
}

41
system/sensord/sensors/bmx055_gyro.h Normal file
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#pragma once
#include "system/sensord/sensors/i2c_sensor.h"
// Address of the chip on the bus
#define BMX055_GYRO_I2C_ADDR 0x68
// Registers of the chip
#define BMX055_GYRO_I2C_REG_ID 0x00
#define BMX055_GYRO_I2C_REG_RATE_X_LSB 0x02
#define BMX055_GYRO_I2C_REG_RANGE 0x0F
#define BMX055_GYRO_I2C_REG_BW 0x10
#define BMX055_GYRO_I2C_REG_LPM1 0x11
#define BMX055_GYRO_I2C_REG_HBW 0x13
#define BMX055_GYRO_I2C_REG_FIFO 0x3F
// Constants
#define BMX055_GYRO_CHIP_ID 0x0F
#define BMX055_GYRO_HBW_ENABLE 0b10000000
#define BMX055_GYRO_HBW_DISABLE 0b00000000
#define BMX055_GYRO_DEEP_SUSPEND 0b00100000
#define BMX055_GYRO_NORMAL_MODE 0b00000000
#define BMX055_GYRO_RANGE_2000 0b000
#define BMX055_GYRO_RANGE_1000 0b001
#define BMX055_GYRO_RANGE_500 0b010
#define BMX055_GYRO_RANGE_250 0b011
#define BMX055_GYRO_RANGE_125 0b100
#define BMX055_GYRO_BW_116HZ 0b0010
class BMX055_Gyro : public I2CSensor {
uint8_t get_device_address() {return BMX055_GYRO_I2C_ADDR;}
public:
BMX055_Gyro(I2CBus *bus);
int init();
bool get_event(MessageBuilder &msg, uint64_t ts = 0);
int shutdown();
};

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system/sensord/sensors/bmx055_magn.cc Normal file
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#include "system/sensord/sensors/bmx055_magn.h"
#include <unistd.h>
#include <algorithm>
#include <cassert>
#include <cstdio>
#include "common/swaglog.h"
#include "common/util.h"
static int16_t compensate_x(trim_data_t trim_data, int16_t mag_data_x, uint16_t data_rhall) {
uint16_t process_comp_x0 = data_rhall;
int32_t process_comp_x1 = ((int32_t)trim_data.dig_xyz1) * 16384;
uint16_t process_comp_x2 = ((uint16_t)(process_comp_x1 / process_comp_x0)) - ((uint16_t)0x4000);
int16_t retval = ((int16_t)process_comp_x2);
int32_t process_comp_x3 = (((int32_t)retval) * ((int32_t)retval));
int32_t process_comp_x4 = (((int32_t)trim_data.dig_xy2) * (process_comp_x3 / 128));
int32_t process_comp_x5 = (int32_t)(((int16_t)trim_data.dig_xy1) * 128);
int32_t process_comp_x6 = ((int32_t)retval) * process_comp_x5;
int32_t process_comp_x7 = (((process_comp_x4 + process_comp_x6) / 512) + ((int32_t)0x100000));
int32_t process_comp_x8 = ((int32_t)(((int16_t)trim_data.dig_x2) + ((int16_t)0xA0)));
int32_t process_comp_x9 = ((process_comp_x7 * process_comp_x8) / 4096);
int32_t process_comp_x10 = ((int32_t)mag_data_x) * process_comp_x9;
retval = ((int16_t)(process_comp_x10 / 8192));
retval = (retval + (((int16_t)trim_data.dig_x1) * 8)) / 16;
return retval;
}
static int16_t compensate_y(trim_data_t trim_data, int16_t mag_data_y, uint16_t data_rhall) {
uint16_t process_comp_y0 = trim_data.dig_xyz1;
int32_t process_comp_y1 = (((int32_t)trim_data.dig_xyz1) * 16384) / process_comp_y0;
uint16_t process_comp_y2 = ((uint16_t)process_comp_y1) - ((uint16_t)0x4000);
int16_t retval = ((int16_t)process_comp_y2);
int32_t process_comp_y3 = ((int32_t) retval) * ((int32_t)retval);
int32_t process_comp_y4 = ((int32_t)trim_data.dig_xy2) * (process_comp_y3 / 128);
int32_t process_comp_y5 = ((int32_t)(((int16_t)trim_data.dig_xy1) * 128));
int32_t process_comp_y6 = ((process_comp_y4 + (((int32_t)retval) * process_comp_y5)) / 512);
int32_t process_comp_y7 = ((int32_t)(((int16_t)trim_data.dig_y2) + ((int16_t)0xA0)));
int32_t process_comp_y8 = (((process_comp_y6 + ((int32_t)0x100000)) * process_comp_y7) / 4096);
int32_t process_comp_y9 = (((int32_t)mag_data_y) * process_comp_y8);
retval = (int16_t)(process_comp_y9 / 8192);
retval = (retval + (((int16_t)trim_data.dig_y1) * 8)) / 16;
return retval;
}
static int16_t compensate_z(trim_data_t trim_data, int16_t mag_data_z, uint16_t data_rhall) {
int16_t process_comp_z0 = ((int16_t)data_rhall) - ((int16_t) trim_data.dig_xyz1);
int32_t process_comp_z1 = (((int32_t)trim_data.dig_z3) * ((int32_t)(process_comp_z0))) / 4;
int32_t process_comp_z2 = (((int32_t)(mag_data_z - trim_data.dig_z4)) * 32768);
int32_t process_comp_z3 = ((int32_t)trim_data.dig_z1) * (((int16_t)data_rhall) * 2);
int16_t process_comp_z4 = (int16_t)((process_comp_z3 + (32768)) / 65536);
int32_t retval = ((process_comp_z2 - process_comp_z1) / (trim_data.dig_z2 + process_comp_z4));
/* saturate result to +/- 2 micro-tesla */
retval = std::clamp(retval, -32767, 32767);
/* Conversion of LSB to micro-tesla*/
retval = retval / 16;
return (int16_t)retval;
}
BMX055_Magn::BMX055_Magn(I2CBus *bus) : I2CSensor(bus) {}
int BMX055_Magn::init() {
uint8_t trim_x1y1[2] = {0};
uint8_t trim_x2y2[2] = {0};
uint8_t trim_xy1xy2[2] = {0};
uint8_t trim_z1[2] = {0};
uint8_t trim_z2[2] = {0};
uint8_t trim_z3[2] = {0};
uint8_t trim_z4[2] = {0};
uint8_t trim_xyz1[2] = {0};
// suspend -> sleep
int ret = set_register(BMX055_MAGN_I2C_REG_PWR_0, 0x01);
if (ret < 0) {
LOGE("Enabling power failed: %d", ret);
goto fail;
}
util::sleep_for(5); // wait until the chip is powered on
ret = verify_chip_id(BMX055_MAGN_I2C_REG_ID, {BMX055_MAGN_CHIP_ID});
if (ret == -1) {
goto fail;
}
// Load magnetometer trim
ret = read_register(BMX055_MAGN_I2C_REG_DIG_X1, trim_x1y1, 2);
if (ret < 0) goto fail;
ret = read_register(BMX055_MAGN_I2C_REG_DIG_X2, trim_x2y2, 2);
if (ret < 0) goto fail;
ret = read_register(BMX055_MAGN_I2C_REG_DIG_XY2, trim_xy1xy2, 2);
if (ret < 0) goto fail;
ret = read_register(BMX055_MAGN_I2C_REG_DIG_Z1_LSB, trim_z1, 2);
if (ret < 0) goto fail;
ret = read_register(BMX055_MAGN_I2C_REG_DIG_Z2_LSB, trim_z2, 2);
if (ret < 0) goto fail;
ret = read_register(BMX055_MAGN_I2C_REG_DIG_Z3_LSB, trim_z3, 2);
if (ret < 0) goto fail;
ret = read_register(BMX055_MAGN_I2C_REG_DIG_Z4_LSB, trim_z4, 2);
if (ret < 0) goto fail;
ret = read_register(BMX055_MAGN_I2C_REG_DIG_XYZ1_LSB, trim_xyz1, 2);
if (ret < 0) goto fail;
// Read trim data
trim_data.dig_x1 = trim_x1y1[0];
trim_data.dig_y1 = trim_x1y1[1];
trim_data.dig_x2 = trim_x2y2[0];
trim_data.dig_y2 = trim_x2y2[1];
trim_data.dig_xy1 = trim_xy1xy2[1]; // NB: MSB/LSB swapped
trim_data.dig_xy2 = trim_xy1xy2[0];
trim_data.dig_z1 = read_16_bit(trim_z1[0], trim_z1[1]);
trim_data.dig_z2 = read_16_bit(trim_z2[0], trim_z2[1]);
trim_data.dig_z3 = read_16_bit(trim_z3[0], trim_z3[1]);
trim_data.dig_z4 = read_16_bit(trim_z4[0], trim_z4[1]);
trim_data.dig_xyz1 = read_16_bit(trim_xyz1[0], trim_xyz1[1] & 0x7f);
assert(trim_data.dig_xyz1 != 0);
perform_self_test();
// f_max = 1 / (145us * nXY + 500us * NZ + 980us)
// Chose NXY = 7, NZ = 12, which gives 125 Hz,
// and has the same ratio as the high accuracy preset
ret = set_register(BMX055_MAGN_I2C_REG_REPXY, (7 - 1) / 2);
if (ret < 0) {
goto fail;
}
ret = set_register(BMX055_MAGN_I2C_REG_REPZ, 12 - 1);
if (ret < 0) {
goto fail;
}
return 0;
fail:
return ret;
}
int BMX055_Magn::shutdown() {
// move to suspend mode
int ret = set_register(BMX055_MAGN_I2C_REG_PWR_0, 0);
if (ret < 0) {
LOGE("Could not move BMX055 MAGN in suspend mode!");
}
return ret;
}
bool BMX055_Magn::perform_self_test() {
uint8_t buffer[8];
int16_t x, y;
int16_t neg_z, pos_z;
// Increase z reps for less false positives (~30 Hz ODR)
set_register(BMX055_MAGN_I2C_REG_REPXY, 1);
set_register(BMX055_MAGN_I2C_REG_REPZ, 64 - 1);
// Clean existing measurement
read_register(BMX055_MAGN_I2C_REG_DATAX_LSB, buffer, sizeof(buffer));
uint8_t forced = BMX055_MAGN_FORCED;
// Negative current
set_register(BMX055_MAGN_I2C_REG_MAG, forced | (uint8_t(0b10) << 6));
util::sleep_for(100);
read_register(BMX055_MAGN_I2C_REG_DATAX_LSB, buffer, sizeof(buffer));
parse_xyz(buffer, &x, &y, &neg_z);
// Positive current
set_register(BMX055_MAGN_I2C_REG_MAG, forced | (uint8_t(0b11) << 6));
util::sleep_for(100);
read_register(BMX055_MAGN_I2C_REG_DATAX_LSB, buffer, sizeof(buffer));
parse_xyz(buffer, &x, &y, &pos_z);
// Put back in normal mode
set_register(BMX055_MAGN_I2C_REG_MAG, 0);
int16_t diff = pos_z - neg_z;
bool passed = (diff > 180) && (diff < 240);
if (!passed) {
LOGE("self test failed: neg %d pos %d diff %d", neg_z, pos_z, diff);
}
return passed;
}
bool BMX055_Magn::parse_xyz(uint8_t buffer[8], int16_t *x, int16_t *y, int16_t *z) {
bool ready = buffer[6] & 0x1;
if (ready) {
int16_t mdata_x = (int16_t) (((int16_t)buffer[1] << 8) | buffer[0]) >> 3;
int16_t mdata_y = (int16_t) (((int16_t)buffer[3] << 8) | buffer[2]) >> 3;
int16_t mdata_z = (int16_t) (((int16_t)buffer[5] << 8) | buffer[4]) >> 1;
uint16_t data_r = (uint16_t) (((uint16_t)buffer[7] << 8) | buffer[6]) >> 2;
assert(data_r != 0);
*x = compensate_x(trim_data, mdata_x, data_r);
*y = compensate_y(trim_data, mdata_y, data_r);
*z = compensate_z(trim_data, mdata_z, data_r);
}
return ready;
}
bool BMX055_Magn::get_event(MessageBuilder &msg, uint64_t ts) {
uint64_t start_time = nanos_since_boot();
uint8_t buffer[8];
int16_t _x, _y, x, y, z;
int len = read_register(BMX055_MAGN_I2C_REG_DATAX_LSB, buffer, sizeof(buffer));
assert(len == sizeof(buffer));
bool parsed = parse_xyz(buffer, &_x, &_y, &z);
if (parsed) {
auto event = msg.initEvent().initMagnetometer();
event.setSource(cereal::SensorEventData::SensorSource::BMX055);
event.setVersion(2);
event.setSensor(SENSOR_MAGNETOMETER_UNCALIBRATED);
event.setType(SENSOR_TYPE_MAGNETIC_FIELD_UNCALIBRATED);
event.setTimestamp(start_time);
// Move magnetometer into same reference frame as accel/gryo
x = -_y;
y = _x;
// Axis convention
x = -x;
y = -y;
float xyz[] = {(float)x, (float)y, (float)z};
auto svec = event.initMagneticUncalibrated();
svec.setV(xyz);
svec.setStatus(true);
}
// The BMX055 Magnetometer has no FIFO mode. Self running mode only goes
// up to 30 Hz. Therefore we put in forced mode, and request measurements
// at a 100 Hz. When reading the registers we have to check the ready bit
// To verify the measurement was completed this cycle.
set_register(BMX055_MAGN_I2C_REG_MAG, BMX055_MAGN_FORCED);
return parsed;
}

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system/sensord/sensors/bmx055_magn.h Normal file
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#pragma once
#include <tuple>
#include "system/sensord/sensors/i2c_sensor.h"
// Address of the chip on the bus
#define BMX055_MAGN_I2C_ADDR 0x10
// Registers of the chip
#define BMX055_MAGN_I2C_REG_ID 0x40
#define BMX055_MAGN_I2C_REG_PWR_0 0x4B
#define BMX055_MAGN_I2C_REG_MAG 0x4C
#define BMX055_MAGN_I2C_REG_DATAX_LSB 0x42
#define BMX055_MAGN_I2C_REG_RHALL_LSB 0x48
#define BMX055_MAGN_I2C_REG_REPXY 0x51
#define BMX055_MAGN_I2C_REG_REPZ 0x52
#define BMX055_MAGN_I2C_REG_DIG_X1 0x5D
#define BMX055_MAGN_I2C_REG_DIG_Y1 0x5E
#define BMX055_MAGN_I2C_REG_DIG_Z4_LSB 0x62
#define BMX055_MAGN_I2C_REG_DIG_Z4_MSB 0x63
#define BMX055_MAGN_I2C_REG_DIG_X2 0x64
#define BMX055_MAGN_I2C_REG_DIG_Y2 0x65
#define BMX055_MAGN_I2C_REG_DIG_Z2_LSB 0x68
#define BMX055_MAGN_I2C_REG_DIG_Z2_MSB 0x69
#define BMX055_MAGN_I2C_REG_DIG_Z1_LSB 0x6A
#define BMX055_MAGN_I2C_REG_DIG_Z1_MSB 0x6B
#define BMX055_MAGN_I2C_REG_DIG_XYZ1_LSB 0x6C
#define BMX055_MAGN_I2C_REG_DIG_XYZ1_MSB 0x6D
#define BMX055_MAGN_I2C_REG_DIG_Z3_LSB 0x6E
#define BMX055_MAGN_I2C_REG_DIG_Z3_MSB 0x6F
#define BMX055_MAGN_I2C_REG_DIG_XY2 0x70
#define BMX055_MAGN_I2C_REG_DIG_XY1 0x71
// Constants
#define BMX055_MAGN_CHIP_ID 0x32
#define BMX055_MAGN_FORCED (0b01 << 1)
struct trim_data_t {
int8_t dig_x1;
int8_t dig_y1;
int8_t dig_x2;
int8_t dig_y2;
uint16_t dig_z1;
int16_t dig_z2;
int16_t dig_z3;
int16_t dig_z4;
uint8_t dig_xy1;
int8_t dig_xy2;
uint16_t dig_xyz1;
};
class BMX055_Magn : public I2CSensor{
uint8_t get_device_address() {return BMX055_MAGN_I2C_ADDR;}
trim_data_t trim_data = {0};
bool perform_self_test();
bool parse_xyz(uint8_t buffer[8], int16_t *x, int16_t *y, int16_t *z);
public:
BMX055_Magn(I2CBus *bus);
int init();
bool get_event(MessageBuilder &msg, uint64_t ts = 0);
int shutdown();
};

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#include "system/sensord/sensors/bmx055_temp.h"
#include <cassert>
#include "system/sensord/sensors/bmx055_accel.h"
#include "common/swaglog.h"
#include "common/timing.h"
BMX055_Temp::BMX055_Temp(I2CBus *bus) : I2CSensor(bus) {}
int BMX055_Temp::init() {
return verify_chip_id(BMX055_ACCEL_I2C_REG_ID, {BMX055_ACCEL_CHIP_ID}) == -1 ? -1 : 0;
}
bool BMX055_Temp::get_event(MessageBuilder &msg, uint64_t ts) {
uint64_t start_time = nanos_since_boot();
uint8_t buffer[1];
int len = read_register(BMX055_ACCEL_I2C_REG_TEMP, buffer, sizeof(buffer));
assert(len == sizeof(buffer));
float temp = 23.0f + int8_t(buffer[0]) / 2.0f;
auto event = msg.initEvent().initTemperatureSensor();
event.setSource(cereal::SensorEventData::SensorSource::BMX055);
event.setVersion(1);
event.setType(SENSOR_TYPE_AMBIENT_TEMPERATURE);
event.setTimestamp(start_time);
event.setTemperature(temp);
return true;
}

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system/sensord/sensors/bmx055_temp.h Normal file
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#pragma once
#include "system/sensord/sensors/bmx055_accel.h"
#include "system/sensord/sensors/i2c_sensor.h"
class BMX055_Temp : public I2CSensor {
uint8_t get_device_address() {return BMX055_ACCEL_I2C_ADDR;}
public:
BMX055_Temp(I2CBus *bus);
int init();
bool get_event(MessageBuilder &msg, uint64_t ts = 0);
int shutdown() { return 0; }
};

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system/sensord/sensors/constants.h Normal file
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#pragma once
#define SENSOR_ACCELEROMETER 1
#define SENSOR_MAGNETOMETER 2
#define SENSOR_MAGNETOMETER_UNCALIBRATED 3
#define SENSOR_GYRO 4
#define SENSOR_GYRO_UNCALIBRATED 5
#define SENSOR_LIGHT 7
#define SENSOR_TYPE_ACCELEROMETER 1
#define SENSOR_TYPE_GEOMAGNETIC_FIELD 2
#define SENSOR_TYPE_GYROSCOPE 4
#define SENSOR_TYPE_LIGHT 5
#define SENSOR_TYPE_AMBIENT_TEMPERATURE 13
#define SENSOR_TYPE_MAGNETIC_FIELD_UNCALIBRATED 14
#define SENSOR_TYPE_MAGNETIC_FIELD SENSOR_TYPE_GEOMAGNETIC_FIELD
#define SENSOR_TYPE_GYROSCOPE_UNCALIBRATED 16

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system/sensord/sensors/i2c_sensor.cc Normal file
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#include "system/sensord/sensors/i2c_sensor.h"
int16_t read_12_bit(uint8_t lsb, uint8_t msb) {
uint16_t combined = (uint16_t(msb) << 8) | uint16_t(lsb & 0xF0);
return int16_t(combined) / (1 << 4);
}
int16_t read_16_bit(uint8_t lsb, uint8_t msb) {
uint16_t combined = (uint16_t(msb) << 8) | uint16_t(lsb);
return int16_t(combined);
}
int32_t read_20_bit(uint8_t b2, uint8_t b1, uint8_t b0) {
uint32_t combined = (uint32_t(b0) << 16) | (uint32_t(b1) << 8) | uint32_t(b2);
return int32_t(combined) / (1 << 4);
}
I2CSensor::I2CSensor(I2CBus *bus, int gpio_nr, bool shared_gpio) :
bus(bus), gpio_nr(gpio_nr), shared_gpio(shared_gpio) {}
I2CSensor::~I2CSensor() {
if (gpio_fd != -1) {
close(gpio_fd);
}
}
int I2CSensor::read_register(uint register_address, uint8_t *buffer, uint8_t len) {
return bus->read_register(get_device_address(), register_address, buffer, len);
}
int I2CSensor::set_register(uint register_address, uint8_t data) {
return bus->set_register(get_device_address(), register_address, data);
}
int I2CSensor::init_gpio() {
if (shared_gpio || gpio_nr == 0) {
return 0;
}
gpio_fd = gpiochip_get_ro_value_fd("sensord", GPIOCHIP_INT, gpio_nr);
if (gpio_fd < 0) {
return -1;
}
return 0;
}
bool I2CSensor::has_interrupt_enabled() {
return gpio_nr != 0;
}

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system/sensord/sensors/i2c_sensor.h Normal file
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#pragma once
#include <cstdint>
#include <unistd.h>
#include <vector>
#include "cereal/gen/cpp/log.capnp.h"
#include "common/i2c.h"
#include "common/gpio.h"
#include "common/swaglog.h"
#include "system/sensord/sensors/constants.h"
#include "system/sensord/sensors/sensor.h"
int16_t read_12_bit(uint8_t lsb, uint8_t msb);
int16_t read_16_bit(uint8_t lsb, uint8_t msb);
int32_t read_20_bit(uint8_t b2, uint8_t b1, uint8_t b0);
class I2CSensor : public Sensor {
private:
I2CBus *bus;
int gpio_nr;
bool shared_gpio;
virtual uint8_t get_device_address() = 0;
public:
I2CSensor(I2CBus *bus, int gpio_nr = 0, bool shared_gpio = false);
~I2CSensor();
int read_register(uint register_address, uint8_t *buffer, uint8_t len);
int set_register(uint register_address, uint8_t data);
int init_gpio();
bool has_interrupt_enabled();
virtual int init() = 0;
virtual bool get_event(MessageBuilder &msg, uint64_t ts = 0) = 0;
virtual int shutdown() = 0;
int verify_chip_id(uint8_t address, const std::vector<uint8_t> &expected_ids) {
uint8_t chip_id = 0;
int ret = read_register(address, &chip_id, 1);
if (ret < 0) {
LOGE("Reading chip ID failed: %d", ret);
return -1;
}
for (int i = 0; i < expected_ids.size(); ++i) {
if (chip_id == expected_ids[i]) return chip_id;
}
LOGE("Chip ID wrong. Got: %d, Expected %d", chip_id, expected_ids[0]);
return -1;
}
};

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system/sensord/sensors/lsm6ds3_accel.cc Normal file
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#include "system/sensord/sensors/lsm6ds3_accel.h"
#include <cassert>
#include <cmath>
#include <cstring>
#include "common/swaglog.h"
#include "common/timing.h"
#include "common/util.h"
LSM6DS3_Accel::LSM6DS3_Accel(I2CBus *bus, int gpio_nr, bool shared_gpio) :
I2CSensor(bus, gpio_nr, shared_gpio) {}
void LSM6DS3_Accel::wait_for_data_ready() {
uint8_t drdy = 0;
uint8_t buffer[6];
do {
read_register(LSM6DS3_ACCEL_I2C_REG_STAT_REG, &drdy, sizeof(drdy));
drdy &= LSM6DS3_ACCEL_DRDY_XLDA;
} while (drdy == 0);
read_register(LSM6DS3_ACCEL_I2C_REG_OUTX_L_XL, buffer, sizeof(buffer));
}
void LSM6DS3_Accel::read_and_avg_data(float* out_buf) {
uint8_t drdy = 0;
uint8_t buffer[6];
float scaling = 0.061f;
if (source == cereal::SensorEventData::SensorSource::LSM6DS3TRC) {
scaling = 0.122f;
}
for (int i = 0; i < 5; i++) {
do {
read_register(LSM6DS3_ACCEL_I2C_REG_STAT_REG, &drdy, sizeof(drdy));
drdy &= LSM6DS3_ACCEL_DRDY_XLDA;
} while (drdy == 0);
int len = read_register(LSM6DS3_ACCEL_I2C_REG_OUTX_L_XL, buffer, sizeof(buffer));
assert(len == sizeof(buffer));
for (int j = 0; j < 3; j++) {
out_buf[j] += (float)read_16_bit(buffer[j*2], buffer[j*2+1]) * scaling;
}
}
for (int i = 0; i < 3; i++) {
out_buf[i] /= 5.0f;
}
}
int LSM6DS3_Accel::self_test(int test_type) {
float val_st_off[3] = {0};
float val_st_on[3] = {0};
float test_val[3] = {0};
uint8_t ODR_FS_MO = LSM6DS3_ACCEL_ODR_52HZ; // full scale: +-2g, ODR: 52Hz
// prepare sensor for self-test
// enable block data update and automatic increment
int ret = set_register(LSM6DS3_ACCEL_I2C_REG_CTRL3_C, LSM6DS3_ACCEL_IF_INC_BDU);
if (ret < 0) {
return ret;
}
if (source == cereal::SensorEventData::SensorSource::LSM6DS3TRC) {
ODR_FS_MO = LSM6DS3_ACCEL_FS_4G | LSM6DS3_ACCEL_ODR_52HZ;
}
ret = set_register(LSM6DS3_ACCEL_I2C_REG_CTRL1_XL, ODR_FS_MO);
if (ret < 0) {
return ret;
}
// wait for stable output, and discard first values
util::sleep_for(100);
wait_for_data_ready();
read_and_avg_data(val_st_off);
// enable Self Test positive (or negative)
ret = set_register(LSM6DS3_ACCEL_I2C_REG_CTRL5_C, test_type);
if (ret < 0) {
return ret;
}
// wait for stable output, and discard first values
util::sleep_for(100);
wait_for_data_ready();
read_and_avg_data(val_st_on);
// disable sensor
ret = set_register(LSM6DS3_ACCEL_I2C_REG_CTRL1_XL, 0);
if (ret < 0) {
return ret;
}
// disable self test
ret = set_register(LSM6DS3_ACCEL_I2C_REG_CTRL5_C, 0);
if (ret < 0) {
return ret;
}
// calculate the mg values for self test
for (int i = 0; i < 3; i++) {
test_val[i] = fabs(val_st_on[i] - val_st_off[i]);
}
// verify test result
for (int i = 0; i < 3; i++) {
if ((LSM6DS3_ACCEL_MIN_ST_LIMIT_mg > test_val[i]) ||
(test_val[i] > LSM6DS3_ACCEL_MAX_ST_LIMIT_mg)) {
return -1;
}
}
return ret;
}
int LSM6DS3_Accel::init() {
uint8_t value = 0;
bool do_self_test = false;
const char* env_lsm_selftest = std::getenv("LSM_SELF_TEST");
if (env_lsm_selftest != nullptr && strncmp(env_lsm_selftest, "1", 1) == 0) {
do_self_test = true;
}
int ret = verify_chip_id(LSM6DS3_ACCEL_I2C_REG_ID, {LSM6DS3_ACCEL_CHIP_ID, LSM6DS3TRC_ACCEL_CHIP_ID});
if (ret == -1) return -1;
if (ret == LSM6DS3TRC_ACCEL_CHIP_ID) {
source = cereal::SensorEventData::SensorSource::LSM6DS3TRC;
}
ret = self_test(LSM6DS3_ACCEL_POSITIVE_TEST);
if (ret < 0) {
LOGE("LSM6DS3 accel positive self-test failed!");
if (do_self_test) goto fail;
}
ret = self_test(LSM6DS3_ACCEL_NEGATIVE_TEST);
if (ret < 0) {
LOGE("LSM6DS3 accel negative self-test failed!");
if (do_self_test) goto fail;
}
ret = init_gpio();
if (ret < 0) {
goto fail;
}
// enable continuous update, and automatic increase
ret = set_register(LSM6DS3_ACCEL_I2C_REG_CTRL3_C, LSM6DS3_ACCEL_IF_INC);
if (ret < 0) {
goto fail;
}
// TODO: set scale and bandwidth. Default is +- 2G, 50 Hz
ret = set_register(LSM6DS3_ACCEL_I2C_REG_CTRL1_XL, LSM6DS3_ACCEL_ODR_104HZ);
if (ret < 0) {
goto fail;
}
ret = set_register(LSM6DS3_ACCEL_I2C_REG_DRDY_CFG, LSM6DS3_ACCEL_DRDY_PULSE_MODE);
if (ret < 0) {
goto fail;
}
// enable data ready interrupt for accel on INT1
// (without resetting existing interrupts)
ret = read_register(LSM6DS3_ACCEL_I2C_REG_INT1_CTRL, &value, 1);
if (ret < 0) {
goto fail;
}
value |= LSM6DS3_ACCEL_INT1_DRDY_XL;
ret = set_register(LSM6DS3_ACCEL_I2C_REG_INT1_CTRL, value);
fail:
return ret;
}
int LSM6DS3_Accel::shutdown() {
int ret = 0;
// disable data ready interrupt for accel on INT1
uint8_t value = 0;
ret = read_register(LSM6DS3_ACCEL_I2C_REG_INT1_CTRL, &value, 1);
if (ret < 0) {
goto fail;
}
value &= ~(LSM6DS3_ACCEL_INT1_DRDY_XL);
ret = set_register(LSM6DS3_ACCEL_I2C_REG_INT1_CTRL, value);
if (ret < 0) {
LOGE("Could not disable lsm6ds3 acceleration interrupt!");
goto fail;
}
// enable power-down mode
value = 0;
ret = read_register(LSM6DS3_ACCEL_I2C_REG_CTRL1_XL, &value, 1);
if (ret < 0) {
goto fail;
}
value &= 0x0F;
ret = set_register(LSM6DS3_ACCEL_I2C_REG_CTRL1_XL, value);
if (ret < 0) {
LOGE("Could not power-down lsm6ds3 accelerometer!");
goto fail;
}
fail:
return ret;
}
bool LSM6DS3_Accel::get_event(MessageBuilder &msg, uint64_t ts) {
// INT1 shared with gyro, check STATUS_REG who triggered
uint8_t status_reg = 0;
read_register(LSM6DS3_ACCEL_I2C_REG_STAT_REG, &status_reg, sizeof(status_reg));
if ((status_reg & LSM6DS3_ACCEL_DRDY_XLDA) == 0) {
return false;
}
uint8_t buffer[6];
int len = read_register(LSM6DS3_ACCEL_I2C_REG_OUTX_L_XL, buffer, sizeof(buffer));
assert(len == sizeof(buffer));
float scale = 9.81 * 2.0f / (1 << 15);
float x = read_16_bit(buffer[0], buffer[1]) * scale;
float y = read_16_bit(buffer[2], buffer[3]) * scale;
float z = read_16_bit(buffer[4], buffer[5]) * scale;
auto event = msg.initEvent().initAccelerometer();
event.setSource(source);
event.setVersion(1);
event.setSensor(SENSOR_ACCELEROMETER);
event.setType(SENSOR_TYPE_ACCELEROMETER);
event.setTimestamp(ts);
float xyz[] = {y, -x, z};
auto svec = event.initAcceleration();
svec.setV(xyz);
svec.setStatus(true);
return true;
}

49
system/sensord/sensors/lsm6ds3_accel.h Normal file
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#pragma once
#include "system/sensord/sensors/i2c_sensor.h"
// Address of the chip on the bus
#define LSM6DS3_ACCEL_I2C_ADDR 0x6A
// Registers of the chip
#define LSM6DS3_ACCEL_I2C_REG_DRDY_CFG 0x0B
#define LSM6DS3_ACCEL_I2C_REG_ID 0x0F
#define LSM6DS3_ACCEL_I2C_REG_INT1_CTRL 0x0D
#define LSM6DS3_ACCEL_I2C_REG_CTRL1_XL 0x10
#define LSM6DS3_ACCEL_I2C_REG_CTRL3_C 0x12
#define LSM6DS3_ACCEL_I2C_REG_CTRL5_C 0x14
#define LSM6DS3_ACCEL_I2C_REG_CTR9_XL 0x18
#define LSM6DS3_ACCEL_I2C_REG_STAT_REG 0x1E
#define LSM6DS3_ACCEL_I2C_REG_OUTX_L_XL 0x28
// Constants
#define LSM6DS3_ACCEL_CHIP_ID 0x69
#define LSM6DS3TRC_ACCEL_CHIP_ID 0x6A
#define LSM6DS3_ACCEL_FS_4G (0b10 << 2)
#define LSM6DS3_ACCEL_ODR_52HZ (0b0011 << 4)
#define LSM6DS3_ACCEL_ODR_104HZ (0b0100 << 4)
#define LSM6DS3_ACCEL_INT1_DRDY_XL 0b1
#define LSM6DS3_ACCEL_DRDY_XLDA 0b1
#define LSM6DS3_ACCEL_DRDY_PULSE_MODE (1 << 7)
#define LSM6DS3_ACCEL_IF_INC 0b00000100
#define LSM6DS3_ACCEL_IF_INC_BDU 0b01000100
#define LSM6DS3_ACCEL_XYZ_DEN 0b11100000
#define LSM6DS3_ACCEL_POSITIVE_TEST 0b01
#define LSM6DS3_ACCEL_NEGATIVE_TEST 0b10
#define LSM6DS3_ACCEL_MIN_ST_LIMIT_mg 90.0f
#define LSM6DS3_ACCEL_MAX_ST_LIMIT_mg 1700.0f
class LSM6DS3_Accel : public I2CSensor {
uint8_t get_device_address() {return LSM6DS3_ACCEL_I2C_ADDR;}
cereal::SensorEventData::SensorSource source = cereal::SensorEventData::SensorSource::LSM6DS3;
// self test functions
int self_test(int test_type);
void wait_for_data_ready();
void read_and_avg_data(float* val_st_off);
public:
LSM6DS3_Accel(I2CBus *bus, int gpio_nr = 0, bool shared_gpio = false);
int init();
bool get_event(MessageBuilder &msg, uint64_t ts = 0);
int shutdown();
};

233
system/sensord/sensors/lsm6ds3_gyro.cc Normal file
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#include "system/sensord/sensors/lsm6ds3_gyro.h"
#include <cassert>
#include <cmath>
#include <cstring>
#include "common/swaglog.h"
#include "common/timing.h"
#include "common/util.h"
#define DEG2RAD(x) ((x) * M_PI / 180.0)
LSM6DS3_Gyro::LSM6DS3_Gyro(I2CBus *bus, int gpio_nr, bool shared_gpio) :
I2CSensor(bus, gpio_nr, shared_gpio) {}
void LSM6DS3_Gyro::wait_for_data_ready() {
uint8_t drdy = 0;
uint8_t buffer[6];
do {
read_register(LSM6DS3_GYRO_I2C_REG_STAT_REG, &drdy, sizeof(drdy));
drdy &= LSM6DS3_GYRO_DRDY_GDA;
} while (drdy == 0);
read_register(LSM6DS3_GYRO_I2C_REG_OUTX_L_G, buffer, sizeof(buffer));
}
void LSM6DS3_Gyro::read_and_avg_data(float* out_buf) {
uint8_t drdy = 0;
uint8_t buffer[6];
for (int i = 0; i < 5; i++) {
do {
read_register(LSM6DS3_GYRO_I2C_REG_STAT_REG, &drdy, sizeof(drdy));
drdy &= LSM6DS3_GYRO_DRDY_GDA;
} while (drdy == 0);
int len = read_register(LSM6DS3_GYRO_I2C_REG_OUTX_L_G, buffer, sizeof(buffer));
assert(len == sizeof(buffer));
for (int j = 0; j < 3; j++) {
out_buf[j] += (float)read_16_bit(buffer[j*2], buffer[j*2+1]) * 70.0f;
}
}
// calculate the mg average values
for (int i = 0; i < 3; i++) {
out_buf[i] /= 5.0f;
}
}
int LSM6DS3_Gyro::self_test(int test_type) {
float val_st_off[3] = {0};
float val_st_on[3] = {0};
float test_val[3] = {0};
// prepare sensor for self-test
// full scale: 2000dps, ODR: 208Hz
int ret = set_register(LSM6DS3_GYRO_I2C_REG_CTRL2_G, LSM6DS3_GYRO_ODR_208HZ | LSM6DS3_GYRO_FS_2000dps);
if (ret < 0) {
return ret;
}
// wait for stable output, and discard first values
util::sleep_for(150);
wait_for_data_ready();
read_and_avg_data(val_st_off);
// enable Self Test positive (or negative)
ret = set_register(LSM6DS3_GYRO_I2C_REG_CTRL5_C, test_type);
if (ret < 0) {
return ret;
}
// wait for stable output, and discard first values
util::sleep_for(50);
wait_for_data_ready();
read_and_avg_data(val_st_on);
// disable sensor
ret = set_register(LSM6DS3_GYRO_I2C_REG_CTRL2_G, 0);
if (ret < 0) {
return ret;
}
// disable self test
ret = set_register(LSM6DS3_GYRO_I2C_REG_CTRL5_C, 0);
if (ret < 0) {
return ret;
}
// calculate the mg values for self test
for (int i = 0; i < 3; i++) {
test_val[i] = fabs(val_st_on[i] - val_st_off[i]);
}
// verify test result
for (int i = 0; i < 3; i++) {
if ((LSM6DS3_GYRO_MIN_ST_LIMIT_mdps > test_val[i]) ||
(test_val[i] > LSM6DS3_GYRO_MAX_ST_LIMIT_mdps)) {
return -1;
}
}
return ret;
}
int LSM6DS3_Gyro::init() {
uint8_t value = 0;
bool do_self_test = false;
const char* env_lsm_selftest =env_lsm_selftest = std::getenv("LSM_SELF_TEST");
if (env_lsm_selftest != nullptr && strncmp(env_lsm_selftest, "1", 1) == 0) {
do_self_test = true;
}
int ret = verify_chip_id(LSM6DS3_GYRO_I2C_REG_ID, {LSM6DS3_GYRO_CHIP_ID, LSM6DS3TRC_GYRO_CHIP_ID});
if (ret == -1) return -1;
if (ret == LSM6DS3TRC_GYRO_CHIP_ID) {
source = cereal::SensorEventData::SensorSource::LSM6DS3TRC;
}
ret = init_gpio();
if (ret < 0) {
goto fail;
}
ret = self_test(LSM6DS3_GYRO_POSITIVE_TEST);
if (ret < 0) {
LOGE("LSM6DS3 gyro positive self-test failed!");
if (do_self_test) goto fail;
}
ret = self_test(LSM6DS3_GYRO_NEGATIVE_TEST);
if (ret < 0) {
LOGE("LSM6DS3 gyro negative self-test failed!");
if (do_self_test) goto fail;
}
// TODO: set scale. Default is +- 250 deg/s
ret = set_register(LSM6DS3_GYRO_I2C_REG_CTRL2_G, LSM6DS3_GYRO_ODR_104HZ);
if (ret < 0) {
goto fail;
}
ret = set_register(LSM6DS3_GYRO_I2C_REG_DRDY_CFG, LSM6DS3_GYRO_DRDY_PULSE_MODE);
if (ret < 0) {
goto fail;
}
// enable data ready interrupt for gyro on INT1
// (without resetting existing interrupts)
ret = read_register(LSM6DS3_GYRO_I2C_REG_INT1_CTRL, &value, 1);
if (ret < 0) {
goto fail;
}
value |= LSM6DS3_GYRO_INT1_DRDY_G;
ret = set_register(LSM6DS3_GYRO_I2C_REG_INT1_CTRL, value);
fail:
return ret;
}
int LSM6DS3_Gyro::shutdown() {
int ret = 0;
// disable data ready interrupt for gyro on INT1
uint8_t value = 0;
ret = read_register(LSM6DS3_GYRO_I2C_REG_INT1_CTRL, &value, 1);
if (ret < 0) {
goto fail;
}
value &= ~(LSM6DS3_GYRO_INT1_DRDY_G);
ret = set_register(LSM6DS3_GYRO_I2C_REG_INT1_CTRL, value);
if (ret < 0) {
LOGE("Could not disable lsm6ds3 gyroscope interrupt!");
goto fail;
}
// enable power-down mode
value = 0;
ret = read_register(LSM6DS3_GYRO_I2C_REG_CTRL2_G, &value, 1);
if (ret < 0) {
goto fail;
}
value &= 0x0F;
ret = set_register(LSM6DS3_GYRO_I2C_REG_CTRL2_G, value);
if (ret < 0) {
LOGE("Could not power-down lsm6ds3 gyroscope!");
goto fail;
}
fail:
return ret;
}
bool LSM6DS3_Gyro::get_event(MessageBuilder &msg, uint64_t ts) {
// INT1 shared with accel, check STATUS_REG who triggered
uint8_t status_reg = 0;
read_register(LSM6DS3_GYRO_I2C_REG_STAT_REG, &status_reg, sizeof(status_reg));
if ((status_reg & LSM6DS3_GYRO_DRDY_GDA) == 0) {
return false;
}
uint8_t buffer[6];
int len = read_register(LSM6DS3_GYRO_I2C_REG_OUTX_L_G, buffer, sizeof(buffer));
assert(len == sizeof(buffer));
float scale = 8.75 / 1000.0;
float x = DEG2RAD(read_16_bit(buffer[0], buffer[1]) * scale);
float y = DEG2RAD(read_16_bit(buffer[2], buffer[3]) * scale);
float z = DEG2RAD(read_16_bit(buffer[4], buffer[5]) * scale);
auto event = msg.initEvent().initGyroscope();
event.setSource(source);
event.setVersion(2);
event.setSensor(SENSOR_GYRO_UNCALIBRATED);
event.setType(SENSOR_TYPE_GYROSCOPE_UNCALIBRATED);
event.setTimestamp(ts);
float xyz[] = {y, -x, z};
auto svec = event.initGyroUncalibrated();
svec.setV(xyz);
svec.setStatus(true);
return true;
}

45
system/sensord/sensors/lsm6ds3_gyro.h Normal file
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@@ -0,0 +1,45 @@
#pragma once
#include "system/sensord/sensors/i2c_sensor.h"
// Address of the chip on the bus
#define LSM6DS3_GYRO_I2C_ADDR 0x6A
// Registers of the chip
#define LSM6DS3_GYRO_I2C_REG_DRDY_CFG 0x0B
#define LSM6DS3_GYRO_I2C_REG_ID 0x0F
#define LSM6DS3_GYRO_I2C_REG_INT1_CTRL 0x0D
#define LSM6DS3_GYRO_I2C_REG_CTRL2_G 0x11
#define LSM6DS3_GYRO_I2C_REG_CTRL5_C 0x14
#define LSM6DS3_GYRO_I2C_REG_STAT_REG 0x1E
#define LSM6DS3_GYRO_I2C_REG_OUTX_L_G 0x22
#define LSM6DS3_GYRO_POSITIVE_TEST (0b01 << 2)
#define LSM6DS3_GYRO_NEGATIVE_TEST (0b11 << 2)
// Constants
#define LSM6DS3_GYRO_CHIP_ID 0x69
#define LSM6DS3TRC_GYRO_CHIP_ID 0x6A
#define LSM6DS3_GYRO_FS_2000dps (0b11 << 2)
#define LSM6DS3_GYRO_ODR_104HZ (0b0100 << 4)
#define LSM6DS3_GYRO_ODR_208HZ (0b0101 << 4)
#define LSM6DS3_GYRO_INT1_DRDY_G 0b10
#define LSM6DS3_GYRO_DRDY_GDA 0b10
#define LSM6DS3_GYRO_DRDY_PULSE_MODE (1 << 7)
#define LSM6DS3_GYRO_MIN_ST_LIMIT_mdps 150000.0f
#define LSM6DS3_GYRO_MAX_ST_LIMIT_mdps 700000.0f
class LSM6DS3_Gyro : public I2CSensor {
uint8_t get_device_address() {return LSM6DS3_GYRO_I2C_ADDR;}
cereal::SensorEventData::SensorSource source = cereal::SensorEventData::SensorSource::LSM6DS3;
// self test functions
int self_test(int test_type);
void wait_for_data_ready();
void read_and_avg_data(float* val_st_off);
public:
LSM6DS3_Gyro(I2CBus *bus, int gpio_nr = 0, bool shared_gpio = false);
int init();
bool get_event(MessageBuilder &msg, uint64_t ts = 0);
int shutdown();
};

37
system/sensord/sensors/lsm6ds3_temp.cc Normal file
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#include "system/sensord/sensors/lsm6ds3_temp.h"
#include <cassert>
#include "common/swaglog.h"
#include "common/timing.h"
LSM6DS3_Temp::LSM6DS3_Temp(I2CBus *bus) : I2CSensor(bus) {}
int LSM6DS3_Temp::init() {
int ret = verify_chip_id(LSM6DS3_TEMP_I2C_REG_ID, {LSM6DS3_TEMP_CHIP_ID, LSM6DS3TRC_TEMP_CHIP_ID});
if (ret == -1) return -1;
if (ret == LSM6DS3TRC_TEMP_CHIP_ID) {
source = cereal::SensorEventData::SensorSource::LSM6DS3TRC;
}
return 0;
}
bool LSM6DS3_Temp::get_event(MessageBuilder &msg, uint64_t ts) {
uint64_t start_time = nanos_since_boot();
uint8_t buffer[2];
int len = read_register(LSM6DS3_TEMP_I2C_REG_OUT_TEMP_L, buffer, sizeof(buffer));
assert(len == sizeof(buffer));
float scale = (source == cereal::SensorEventData::SensorSource::LSM6DS3TRC) ? 256.0f : 16.0f;
float temp = 25.0f + read_16_bit(buffer[0], buffer[1]) / scale;
auto event = msg.initEvent().initTemperatureSensor();
event.setSource(source);
event.setVersion(1);
event.setType(SENSOR_TYPE_AMBIENT_TEMPERATURE);
event.setTimestamp(start_time);
event.setTemperature(temp);
return true;
}

26
system/sensord/sensors/lsm6ds3_temp.h Normal file
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@@ -0,0 +1,26 @@
#pragma once
#include "system/sensord/sensors/i2c_sensor.h"
// Address of the chip on the bus
#define LSM6DS3_TEMP_I2C_ADDR 0x6A
// Registers of the chip
#define LSM6DS3_TEMP_I2C_REG_ID 0x0F
#define LSM6DS3_TEMP_I2C_REG_OUT_TEMP_L 0x20
// Constants
#define LSM6DS3_TEMP_CHIP_ID 0x69
#define LSM6DS3TRC_TEMP_CHIP_ID 0x6A
class LSM6DS3_Temp : public I2CSensor {
uint8_t get_device_address() {return LSM6DS3_TEMP_I2C_ADDR;}
cereal::SensorEventData::SensorSource source = cereal::SensorEventData::SensorSource::LSM6DS3;
public:
LSM6DS3_Temp(I2CBus *bus);
int init();
bool get_event(MessageBuilder &msg, uint64_t ts = 0);
int shutdown() { return 0; }
};

108
system/sensord/sensors/mmc5603nj_magn.cc Normal file
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@@ -0,0 +1,108 @@
#include "system/sensord/sensors/mmc5603nj_magn.h"
#include <algorithm>
#include <cassert>
#include <vector>
#include "common/swaglog.h"
#include "common/timing.h"
#include "common/util.h"
MMC5603NJ_Magn::MMC5603NJ_Magn(I2CBus *bus) : I2CSensor(bus) {}
int MMC5603NJ_Magn::init() {
int ret = verify_chip_id(MMC5603NJ_I2C_REG_ID, {MMC5603NJ_CHIP_ID});
if (ret == -1) return -1;
// Set ODR to 0
ret = set_register(MMC5603NJ_I2C_REG_ODR, 0);
if (ret < 0) {
goto fail;
}
// Set BW to 0b01 for 1-150 Hz operation
ret = set_register(MMC5603NJ_I2C_REG_INTERNAL_1, 0b01);
if (ret < 0) {
goto fail;
}
fail:
return ret;
}
int MMC5603NJ_Magn::shutdown() {
int ret = 0;
// disable auto reset of measurements
uint8_t value = 0;
ret = read_register(MMC5603NJ_I2C_REG_INTERNAL_0, &value, 1);
if (ret < 0) {
goto fail;
}
value &= ~(MMC5603NJ_CMM_FREQ_EN | MMC5603NJ_AUTO_SR_EN);
ret = set_register(MMC5603NJ_I2C_REG_INTERNAL_0, value);
if (ret < 0) {
goto fail;
}
// set ODR to 0 to leave continuous mode
ret = set_register(MMC5603NJ_I2C_REG_ODR, 0);
if (ret < 0) {
goto fail;
}
return ret;
fail:
LOGE("Could not disable mmc5603nj auto set reset");
return ret;
}
void MMC5603NJ_Magn::start_measurement() {
set_register(MMC5603NJ_I2C_REG_INTERNAL_0, 0b01);
util::sleep_for(5);
}
std::vector<float> MMC5603NJ_Magn::read_measurement() {
int len;
uint8_t buffer[9];
len = read_register(MMC5603NJ_I2C_REG_XOUT0, buffer, sizeof(buffer));
assert(len == sizeof(buffer));
float scale = 1.0 / 16384.0;
float x = (read_20_bit(buffer[6], buffer[1], buffer[0]) * scale) - 32.0;
float y = (read_20_bit(buffer[7], buffer[3], buffer[2]) * scale) - 32.0;
float z = (read_20_bit(buffer[8], buffer[5], buffer[4]) * scale) - 32.0;
std::vector<float> xyz = {x, y, z};
return xyz;
}
bool MMC5603NJ_Magn::get_event(MessageBuilder &msg, uint64_t ts) {
uint64_t start_time = nanos_since_boot();
// SET - RESET cycle
set_register(MMC5603NJ_I2C_REG_INTERNAL_0, MMC5603NJ_SET);
util::sleep_for(5);
MMC5603NJ_Magn::start_measurement();
std::vector<float> xyz = MMC5603NJ_Magn::read_measurement();
set_register(MMC5603NJ_I2C_REG_INTERNAL_0, MMC5603NJ_RESET);
util::sleep_for(5);
MMC5603NJ_Magn::start_measurement();
std::vector<float> reset_xyz = MMC5603NJ_Magn::read_measurement();
auto event = msg.initEvent().initMagnetometer();
event.setSource(cereal::SensorEventData::SensorSource::MMC5603NJ);
event.setVersion(1);
event.setSensor(SENSOR_MAGNETOMETER_UNCALIBRATED);
event.setType(SENSOR_TYPE_MAGNETIC_FIELD_UNCALIBRATED);
event.setTimestamp(start_time);
float vals[] = {xyz[0], xyz[1], xyz[2], reset_xyz[0], reset_xyz[1], reset_xyz[2]};
bool valid = true;
if (std::any_of(std::begin(vals), std::end(vals), [](float val) { return val == -32.0; })) {
valid = false;
}
auto svec = event.initMagneticUncalibrated();
svec.setV(vals);
svec.setStatus(valid);
return true;
}

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system/sensord/sensors/mmc5603nj_magn.h Normal file
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#pragma once
#include <vector>
#include "system/sensord/sensors/i2c_sensor.h"
// Address of the chip on the bus
#define MMC5603NJ_I2C_ADDR 0x30
// Registers of the chip
#define MMC5603NJ_I2C_REG_XOUT0 0x00
#define MMC5603NJ_I2C_REG_ODR 0x1A
#define MMC5603NJ_I2C_REG_INTERNAL_0 0x1B
#define MMC5603NJ_I2C_REG_INTERNAL_1 0x1C
#define MMC5603NJ_I2C_REG_INTERNAL_2 0x1D
#define MMC5603NJ_I2C_REG_ID 0x39
// Constants
#define MMC5603NJ_CHIP_ID 0x10
#define MMC5603NJ_CMM_FREQ_EN (1 << 7)
#define MMC5603NJ_AUTO_SR_EN (1 << 5)
#define MMC5603NJ_CMM_EN (1 << 4)
#define MMC5603NJ_EN_PRD_SET (1 << 3)
#define MMC5603NJ_SET (1 << 3)
#define MMC5603NJ_RESET (1 << 4)
class MMC5603NJ_Magn : public I2CSensor {
private:
uint8_t get_device_address() {return MMC5603NJ_I2C_ADDR;}
void start_measurement();
std::vector<float> read_measurement();
public:
MMC5603NJ_Magn(I2CBus *bus);
int init();
bool get_event(MessageBuilder &msg, uint64_t ts = 0);
int shutdown();
};

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system/sensord/sensors/sensor.h Normal file
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#pragma once
#include "cereal/messaging/messaging.h"
class Sensor {
public:
int gpio_fd = -1;
uint64_t start_ts = 0;
uint64_t init_delay = 500e6; // default dealy 500ms
virtual ~Sensor() {}
virtual int init() = 0;
virtual bool get_event(MessageBuilder &msg, uint64_t ts = 0) = 0;
virtual bool has_interrupt_enabled() = 0;
virtual int shutdown() = 0;
virtual bool is_data_valid(uint64_t current_ts) {
if (start_ts == 0) {
start_ts = current_ts;
}
return (current_ts - start_ts) > init_delay;
}
};

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#include <sys/resource.h>
#include <chrono>
#include <thread>
#include <vector>
#include <map>
#include <poll.h>
#include <linux/gpio.h>
#include "cereal/services.h"
#include "cereal/messaging/messaging.h"
#include "common/i2c.h"
#include "common/ratekeeper.h"
#include "common/swaglog.h"
#include "common/timing.h"
#include "common/util.h"
#include "system/sensord/sensors/bmx055_accel.h"
#include "system/sensord/sensors/bmx055_gyro.h"
#include "system/sensord/sensors/bmx055_magn.h"
#include "system/sensord/sensors/bmx055_temp.h"
#include "system/sensord/sensors/constants.h"
#include "system/sensord/sensors/lsm6ds3_accel.h"
#include "system/sensord/sensors/lsm6ds3_gyro.h"
#include "system/sensord/sensors/lsm6ds3_temp.h"
#include "system/sensord/sensors/mmc5603nj_magn.h"
#define I2C_BUS_IMU 1
ExitHandler do_exit;
void interrupt_loop(std::vector<std::tuple<Sensor *, std::string>> sensors) {
PubMaster pm({"gyroscope", "accelerometer"});
int fd = -1;
for (auto &[sensor, msg_name] : sensors) {
if (sensor->has_interrupt_enabled()) {
fd = sensor->gpio_fd;
break;
}
}
struct pollfd fd_list[1] = {0};
fd_list[0].fd = fd;
fd_list[0].events = POLLIN | POLLPRI;
while (!do_exit) {
int err = poll(fd_list, 1, 100);
if (err == -1) {
if (errno == EINTR) {
continue;
}
return;
} else if (err == 0) {
LOGE("poll timed out");
continue;
}
if ((fd_list[0].revents & (POLLIN | POLLPRI)) == 0) {
LOGE("no poll events set");
continue;
}
// Read all events
struct gpioevent_data evdata[16];
err = read(fd, evdata, sizeof(evdata));
if (err < 0 || err % sizeof(*evdata) != 0) {
LOGE("error reading event data %d", err);
continue;
}
int num_events = err / sizeof(*evdata);
uint64_t offset = nanos_since_epoch() - nanos_since_boot();
uint64_t ts = evdata[num_events - 1].timestamp - offset;
for (auto &[sensor, msg_name] : sensors) {
if (!sensor->has_interrupt_enabled()) {
continue;
}
MessageBuilder msg;
if (!sensor->get_event(msg, ts)) {
continue;
}
if (!sensor->is_data_valid(ts)) {
continue;
}
pm.send(msg_name.c_str(), msg);
}
}
}
void polling_loop(Sensor *sensor, std::string msg_name) {
PubMaster pm({msg_name.c_str()});
RateKeeper rk(msg_name, services.at(msg_name).frequency);
while (!do_exit) {
MessageBuilder msg;
if (sensor->get_event(msg) && sensor->is_data_valid(nanos_since_boot())) {
pm.send(msg_name.c_str(), msg);
}
rk.keepTime();
}
}
int sensor_loop(I2CBus *i2c_bus_imu) {
// Sensor init
std::vector<std::tuple<Sensor *, std::string>> sensors_init = {
{new BMX055_Accel(i2c_bus_imu), "accelerometer2"},
{new BMX055_Gyro(i2c_bus_imu), "gyroscope2"},
{new BMX055_Magn(i2c_bus_imu), "magnetometer"},
{new BMX055_Temp(i2c_bus_imu), "temperatureSensor2"},
{new LSM6DS3_Accel(i2c_bus_imu, GPIO_LSM_INT), "accelerometer"},
{new LSM6DS3_Gyro(i2c_bus_imu, GPIO_LSM_INT, true), "gyroscope"},
{new LSM6DS3_Temp(i2c_bus_imu), "temperatureSensor"},
{new MMC5603NJ_Magn(i2c_bus_imu), "magnetometer"},
};
// Initialize sensors
std::vector<std::thread> threads;
for (auto &[sensor, msg_name] : sensors_init) {
int err = sensor->init();
if (err < 0) {
continue;
}
if (!sensor->has_interrupt_enabled()) {
threads.emplace_back(polling_loop, sensor, msg_name);
}
}
// increase interrupt quality by pinning interrupt and process to core 1
setpriority(PRIO_PROCESS, 0, -18);
util::set_core_affinity({1});
// TODO: get the IRQ number from gpiochip
std::string irq_path = "/proc/irq/336/smp_affinity_list";
if (!util::file_exists(irq_path)) {
irq_path = "/proc/irq/335/smp_affinity_list";
}
std::system(util::string_format("sudo su -c 'echo 1 > %s'", irq_path.c_str()).c_str());
// thread for reading events via interrupts
threads.emplace_back(&interrupt_loop, std::ref(sensors_init));
// wait for all threads to finish
for (auto &t : threads) {
t.join();
}
for (auto &[sensor, msg_name] : sensors_init) {
sensor->shutdown();
delete sensor;
}
return 0;
}
int main(int argc, char *argv[]) {
try {
auto i2c_bus_imu = std::make_unique<I2CBus>(I2C_BUS_IMU);
return sensor_loop(i2c_bus_imu.get());
} catch (std::exception &e) {
LOGE("I2CBus init failed");
return -1;
}
}

0
system/sensord/tests/__init__.py Normal file
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system/sensord/tests/test_sensord.py Normal file
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#!/usr/bin/env python3
import os
import pytest
import time
import unittest
import numpy as np
from collections import namedtuple, defaultdict
import cereal.messaging as messaging
from cereal import log
from cereal.services import SERVICE_LIST
from openpilot.common.gpio import get_irqs_for_action
from openpilot.common.timeout import Timeout
from openpilot.selfdrive.manager.process_config import managed_processes
BMX = {
('bmx055', 'acceleration'),
('bmx055', 'gyroUncalibrated'),
('bmx055', 'magneticUncalibrated'),
('bmx055', 'temperature'),
}
LSM = {
('lsm6ds3', 'acceleration'),
('lsm6ds3', 'gyroUncalibrated'),
('lsm6ds3', 'temperature'),
}
LSM_C = {(x[0]+'trc', x[1]) for x in LSM}
MMC = {
('mmc5603nj', 'magneticUncalibrated'),
}
SENSOR_CONFIGURATIONS = (
(BMX | LSM),
(MMC | LSM),
(BMX | LSM_C),
(MMC| LSM_C),
)
Sensor = log.SensorEventData.SensorSource
SensorConfig = namedtuple('SensorConfig', ['type', 'sanity_min', 'sanity_max'])
ALL_SENSORS = {
Sensor.lsm6ds3: {
SensorConfig("acceleration", 5, 15),
SensorConfig("gyroUncalibrated", 0, .2),
SensorConfig("temperature", 0, 60),
},
Sensor.lsm6ds3trc: {
SensorConfig("acceleration", 5, 15),
SensorConfig("gyroUncalibrated", 0, .2),
SensorConfig("temperature", 0, 60),
},
Sensor.bmx055: {
SensorConfig("acceleration", 5, 15),
SensorConfig("gyroUncalibrated", 0, .2),
SensorConfig("magneticUncalibrated", 0, 300),
SensorConfig("temperature", 0, 60),
},
Sensor.mmc5603nj: {
SensorConfig("magneticUncalibrated", 0, 300),
}
}
def get_irq_count(irq: int):
with open(f"/sys/kernel/irq/{irq}/per_cpu_count") as f:
per_cpu = map(int, f.read().split(","))
return sum(per_cpu)
def read_sensor_events(duration_sec):
sensor_types = ['accelerometer', 'gyroscope', 'magnetometer', 'accelerometer2',
'gyroscope2', 'temperatureSensor', 'temperatureSensor2']
socks = {}
poller = messaging.Poller()
events = defaultdict(list)
for stype in sensor_types:
socks[stype] = messaging.sub_sock(stype, poller=poller, timeout=100)
# wait for sensors to come up
with Timeout(int(os.environ.get("SENSOR_WAIT", "5")), "sensors didn't come up"):
while len(poller.poll(250)) == 0:
pass
time.sleep(1)
for s in socks.values():
messaging.drain_sock_raw(s)
st = time.monotonic()
while time.monotonic() - st < duration_sec:
for s in socks:
events[s] += messaging.drain_sock(socks[s])
time.sleep(0.1)
assert sum(map(len, events.values())) != 0, "No sensor events collected!"
return {k: v for k, v in events.items() if len(v) > 0}
@pytest.mark.tici
class TestSensord(unittest.TestCase):
@classmethod
def setUpClass(cls):
# enable LSM self test
os.environ["LSM_SELF_TEST"] = "1"
# read initial sensor values every test case can use
os.system("pkill -f \\\\./sensord")
try:
managed_processes["sensord"].start()
cls.sample_secs = int(os.getenv("SAMPLE_SECS", "10"))
cls.events = read_sensor_events(cls.sample_secs)
# determine sensord's irq
cls.sensord_irq = get_irqs_for_action("sensord")[0]
finally:
# teardown won't run if this doesn't succeed
managed_processes["sensord"].stop()
@classmethod
def tearDownClass(cls):
managed_processes["sensord"].stop()
def tearDown(self):
managed_processes["sensord"].stop()
def test_sensors_present(self):
# verify correct sensors configuration
seen = set()
for etype in self.events:
for measurement in self.events[etype]:
m = getattr(measurement, measurement.which())
seen.add((str(m.source), m.which()))
self.assertIn(seen, SENSOR_CONFIGURATIONS)
def test_lsm6ds3_timing(self):
# verify measurements are sampled and published at 104Hz
sensor_t = {
1: [], # accel
5: [], # gyro
}
for measurement in self.events['accelerometer']:
m = getattr(measurement, measurement.which())
sensor_t[m.sensor].append(m.timestamp)
for measurement in self.events['gyroscope']:
m = getattr(measurement, measurement.which())
sensor_t[m.sensor].append(m.timestamp)
for s, vals in sensor_t.items():
with self.subTest(sensor=s):
assert len(vals) > 0
tdiffs = np.diff(vals) / 1e6 # millis
high_delay_diffs = list(filter(lambda d: d >= 20., tdiffs))
assert len(high_delay_diffs) < 15, f"Too many large diffs: {high_delay_diffs}"
avg_diff = sum(tdiffs)/len(tdiffs)
avg_freq = 1. / (avg_diff * 1e-3)
assert 92. < avg_freq < 114., f"avg freq {avg_freq}Hz wrong, expected 104Hz"
stddev = np.std(tdiffs)
assert stddev < 2.0, f"Standard-dev to big {stddev}"
def test_sensor_frequency(self):
for s, msgs in self.events.items():
with self.subTest(sensor=s):
freq = len(msgs) / self.sample_secs
ef = SERVICE_LIST[s].frequency
assert ef*0.85 <= freq <= ef*1.15
def test_logmonottime_timestamp_diff(self):
# ensure diff between the message logMonotime and sample timestamp is small
tdiffs = list()
for etype in self.events:
for measurement in self.events[etype]:
m = getattr(measurement, measurement.which())
# check if gyro and accel timestamps are before logMonoTime
if str(m.source).startswith("lsm6ds3") and m.which() != 'temperature':
err_msg = f"Timestamp after logMonoTime: {m.timestamp} > {measurement.logMonoTime}"
assert m.timestamp < measurement.logMonoTime, err_msg
# negative values might occur, as non interrupt packages created
# before the sensor is read
tdiffs.append(abs(measurement.logMonoTime - m.timestamp) / 1e6)
# some sensors have a read procedure that will introduce an expected diff on the order of 20ms
high_delay_diffs = set(filter(lambda d: d >= 25., tdiffs))
assert len(high_delay_diffs) < 20, f"Too many measurements published: {high_delay_diffs}"
avg_diff = round(sum(tdiffs)/len(tdiffs), 4)
assert avg_diff < 4, f"Avg packet diff: {avg_diff:.1f}ms"
def test_sensor_values(self):
sensor_values = dict()
for etype in self.events:
for measurement in self.events[etype]:
m = getattr(measurement, measurement.which())
key = (m.source.raw, m.which())
values = getattr(m, m.which())
if hasattr(values, 'v'):
values = values.v
values = np.atleast_1d(values)
if key in sensor_values:
sensor_values[key].append(values)
else:
sensor_values[key] = [values]
# Sanity check sensor values
for sensor, stype in sensor_values:
for s in ALL_SENSORS[sensor]:
if s.type != stype:
continue
key = (sensor, s.type)
mean_norm = np.mean(np.linalg.norm(sensor_values[key], axis=1))
err_msg = f"Sensor '{sensor} {s.type}' failed sanity checks {mean_norm} is not between {s.sanity_min} and {s.sanity_max}"
assert s.sanity_min <= mean_norm <= s.sanity_max, err_msg
def test_sensor_verify_no_interrupts_after_stop(self):
managed_processes["sensord"].start()
time.sleep(3)
# read /proc/interrupts to verify interrupts are received
state_one = get_irq_count(self.sensord_irq)
time.sleep(1)
state_two = get_irq_count(self.sensord_irq)
error_msg = f"no interrupts received after sensord start!\n{state_one} {state_two}"
assert state_one != state_two, error_msg
managed_processes["sensord"].stop()
time.sleep(1)
# read /proc/interrupts to verify no more interrupts are received
state_one = get_irq_count(self.sensord_irq)
time.sleep(1)
state_two = get_irq_count(self.sensord_irq)
assert state_one == state_two, "Interrupts received after sensord stop!"
if __name__ == "__main__":
unittest.main()

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#!/usr/bin/env python3
import time
import atexit
from cereal import messaging
from openpilot.selfdrive.manager.process_config import managed_processes
TIMEOUT = 10*60
def kill():
for proc in ['ubloxd', 'pigeond']:
managed_processes[proc].stop(retry=True, block=True)
if __name__ == "__main__":
# start ubloxd
managed_processes['ubloxd'].start()
atexit.register(kill)
sm = messaging.SubMaster(['ubloxGnss'])
times = []
for i in range(20):
# start pigeond
st = time.monotonic()
managed_processes['pigeond'].start()
# wait for a >4 satellite fix
while True:
sm.update(0)
msg = sm['ubloxGnss']
if msg.which() == 'measurementReport' and sm.updated["ubloxGnss"]:
report = msg.measurementReport
if report.numMeas > 4:
times.append(time.monotonic() - st)
print(f"\033[94m{i}: Got a fix in {round(times[-1], 2)} seconds\033[0m")
break
if time.monotonic() - st > TIMEOUT:
raise TimeoutError("\033[91mFailed to get a fix in {TIMEOUT} seconds!\033[0m")
time.sleep(0.1)
# stop pigeond
managed_processes['pigeond'].stop(retry=True, block=True)
time.sleep(20)
print(f"\033[92mAverage TTFF: {round(sum(times) / len(times), 2)}s\033[0m")