diff options
| -rw-r--r-- | Makefile | 4 | ||||
| -rw-r--r-- | include/driver/sen5x.h | 81 | ||||
| -rw-r--r-- | src/app/datalogger/main.cc | 39 | ||||
| -rw-r--r-- | src/driver/Kconfig | 4 | ||||
| -rw-r--r-- | src/driver/sen5x.cc | 51 |
5 files changed, 179 insertions, 0 deletions
@@ -114,6 +114,10 @@ ifdef CONFIG_driver_scd4x CXX_TARGETS += src/driver/scd4x.cc endif +ifdef CONFIG_driver_sen5x + CXX_TARGETS += src/driver/sen5x.cc +endif + ifdef CONFIG_driver_veml6075 CXX_TARGETS += src/driver/veml6075.cc endif diff --git a/include/driver/sen5x.h b/include/driver/sen5x.h new file mode 100644 index 0000000..64e116b --- /dev/null +++ b/include/driver/sen5x.h @@ -0,0 +1,81 @@ +/* + * Copyright 2021 Daniel Friesel + * + * SPDX-License-Identifier: BSD-2-Clause + */ +#ifndef SEN5x_H +#define SEN5x_H + +class SEN5x { + private: + SEN5x(const SEN5x ©); + unsigned char const address = 0x69; + unsigned char txbuf[2]; + unsigned char rxbuf[24]; + + public: + SEN5x() {} + + unsigned short const PM_INVALID = 0xffff; + signed short const TEMPERATURE_INVALID = 0x7fff; + signed short const HUMIDITY_INVALID = 0x7fff; + signed short const VOC_INVALID = 0x7fff; + signed short const NOX_INVALID = 0x7fff; + + /* + * PM1.0 value, scaled by 10. + * PM1.0 [µg/m³] = pm10 / 10 + */ + unsigned short pm1; + + /* + * PM2.5 value, scaled by 10. + * PM2.5 [µg/m3] = pm2_5 / 10 + */ + unsigned short pm2_5; + + /* + * PM4.0 value, scaled by 10. + * PM4.0 [µg/m3] = pm4 / 10 + */ + unsigned short pm4; + + /* + * PM10 value, scaled by 10. + * PM10 [µg/m3] = pm10 / 10 + */ + unsigned short pm10; + + /* + * Temperature, scaled by 200. + * Temperature [°c] = temperature / 200 + */ + signed short temperature; + + /* + * Relative Humidity, scaled by 100. + * Relative Humidity [%] = humidity / 100 + */ + signed short humidity; + + /* + * VOC Index, scaled by 10. + * VOC index = voc / 10 + */ + signed short voc; + + /* + * NOx Index, scaled by 10. + * NOx index = nox / 10 + */ + signed short nox; + + void start(); + void stop(); + + bool read(); +}; + +extern SEN5x sen5x; + +#endif diff --git a/src/app/datalogger/main.cc b/src/app/datalogger/main.cc index 5800b1b..fd016e7 100644 --- a/src/app/datalogger/main.cc +++ b/src/app/datalogger/main.cc @@ -54,6 +54,9 @@ #ifdef CONFIG_driver_scd4x #include "driver/scd4x.h" #endif +#ifdef CONFIG_driver_sen5x +#include "driver/sen5x.h" +#endif #ifdef CONFIG_driver_veml6075 #include "driver/veml6075.h" #endif @@ -202,6 +205,38 @@ void loop(void) } #endif +#ifdef CONFIG_driver_sen5x + if (sen5x.read()) { + kout << dec; + if (sen5x.pm1 != sen5x.PM_INVALID) { + kout << "PM1.0: " << (sen5x.pm1 / 10) << "." << (sen5x.pm1 % 10) << " µg/m³" << endl; + } + if (sen5x.pm2_5 != sen5x.PM_INVALID) { + kout << "PM2.5: " << (sen5x.pm2_5 / 10) << "." << (sen5x.pm2_5 % 10) << " µg/m³" << endl; + } + if (sen5x.pm4 != sen5x.PM_INVALID) { + kout << "PM4.0: " << (sen5x.pm4 / 10) << "." << (sen5x.pm4 % 10) << " µg/m³" << endl; + } + if (sen5x.pm10 != sen5x.PM_INVALID) { + kout << "PM10 : " << (sen5x.pm10 / 10) << "." << (sen5x.pm10 % 10) << " µg/m³" << endl; + } + if (sen5x.humidity != sen5x.HUMIDITY_INVALID) { + kout << "Humidity: " << (sen5x.humidity / 100) << "." << ((sen5x.humidity % 100) / 10) << " %" << endl; + } + if (sen5x.temperature != sen5x.TEMPERATURE_INVALID) { + kout << "Temperature: " << (sen5x.temperature / 200) << "." << ((sen5x.temperature % 200) / 20) << " °c" << endl; + } + if (sen5x.voc != sen5x.VOC_INVALID) { + kout << "VOC index: " << (sen5x.voc / 10) << "." << (sen5x.voc % 10) << endl; + } + if (sen5x.nox != sen5x.NOX_INVALID) { + kout << "NOx index: " << (sen5x.nox / 10) << "." << (sen5x.nox % 10) << endl; + } + } else { + kout << "SEN5x error" << endl; + } +#endif + #ifdef CONFIG_driver_veml6075 float uva, uvb; if (veml6075.readUV(&uva, &uvb)) { @@ -318,6 +353,10 @@ int main(void) scd4x.start(); #endif +#ifdef CONFIG_driver_sen5x + sen5x.start(); +#endif + #ifdef CONFIG_driver_veml6075 veml6075.init(); #endif diff --git a/src/driver/Kconfig b/src/driver/Kconfig index 5f544ac..581ef10 100644 --- a/src/driver/Kconfig +++ b/src/driver/Kconfig @@ -119,6 +119,10 @@ config driver_scd4x bool "Sensirion SCD4x CO2 Sensor" depends on meta_driver_i2c +config driver_sen5x +bool "Sensirion SEN5x PM Sensor" +depends on meta_driver_i2c + config driver_veml6075 bool "VEML6075 UV Sensor" depends on meta_driver_i2c diff --git a/src/driver/sen5x.cc b/src/driver/sen5x.cc new file mode 100644 index 0000000..2a5d6b8 --- /dev/null +++ b/src/driver/sen5x.cc @@ -0,0 +1,51 @@ +/* + * Copyright 2021 Daniel Friesel + * + * SPDX-License-Identifier: BSD-2-Clause + */ +#include "arch.h" +#include "driver/sen5x.h" +#if defined(CONFIG_meta_driver_hardware_i2c) +#include "driver/i2c.h" +#elif defined(CONFIG_driver_softi2c) +#include "driver/soft_i2c.h" +#endif + +void SEN5x::start() +{ + txbuf[0] = 0x00; + txbuf[1] = 0x21; + i2c.xmit(address, 2, txbuf, 0, rxbuf); +} + +void SEN5x::stop() +{ + txbuf[0] = 0x01; + txbuf[1] = 0x04; + i2c.xmit(address, 2, txbuf, 0, rxbuf); +} + +bool SEN5x::read() +{ + txbuf[0] = 0x03; + txbuf[1] = 0xc4; + + if (i2c.xmit(address, 2, txbuf, 0, rxbuf)) { + return false; + } + arch.delay_ms(20); + if (i2c.xmit(address, 0, txbuf, 24, rxbuf)) { + return false; + } + pm1 = (rxbuf[0] << 8) + rxbuf[1]; + pm2_5 = (rxbuf[3] << 8) + rxbuf[4]; + pm4 = (rxbuf[6] << 8) + rxbuf[7]; + pm10 = (rxbuf[9] << 8) + rxbuf[10]; + humidity = (rxbuf[12] << 8) + rxbuf[13]; + temperature = (rxbuf[15] << 8) + rxbuf[16]; + voc = (rxbuf[18] << 8) + rxbuf[19]; + nox = (rxbuf[21] << 8) + rxbuf[22]; + return true; +} + +SEN5x sen5x; |