diff options
author | Daniel Friesel <derf@finalrewind.org> | 2022-01-02 18:07:49 +0100 |
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committer | Daniel Friesel <derf@finalrewind.org> | 2022-01-02 18:07:49 +0100 |
commit | b78f595070a41037a7df04e103a959b6ad68a7bd (patch) | |
tree | 5c13c4952e39e9680f61747080018b5b54707a0b /src/app/bme680-max44009-logger/generic.cc | |
parent | 0319d8f5321cc0f712c7d3dc82362235490995b7 (diff) |
bme680-max44009-logger: add POSIX variant with BSEC support
Diffstat (limited to 'src/app/bme680-max44009-logger/generic.cc')
-rw-r--r-- | src/app/bme680-max44009-logger/generic.cc | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/src/app/bme680-max44009-logger/generic.cc b/src/app/bme680-max44009-logger/generic.cc new file mode 100644 index 0000000..34f785d --- /dev/null +++ b/src/app/bme680-max44009-logger/generic.cc @@ -0,0 +1,161 @@ +/* + * Copyright 2022 Daniel Friesel + * + * SPDX-License-Identifier: BSD-2-Clause + */ +#include "arch.h" +#include "driver/gpio.h" +#include "driver/stdout.h" +#if defined(CONFIG_meta_driver_hardware_i2c) +#include "driver/i2c.h" +#else +#include "driver/soft_i2c.h" +#endif +#include "driver/bme680.h" +#include "driver/bme680_util.h" +#include "driver/max44009.h" + +#ifdef MULTIPASS_ARCH_arduino_nano +#define POWER_PIN GPIO::pc3 +#endif + +struct bme680_field_data data; +float lux; +int8_t bme680_status; + +static void bme680_init(void) +{ + bme680_status = bme680.init(); + kout << "# BME680 init returned " << bme680_status << endl; + + bme680.power_mode = BME680_FORCED_MODE; + bme680.tph_sett.os_hum = BME680_OS_2X; + bme680.tph_sett.os_pres = BME680_OS_16X; + bme680.tph_sett.os_temp = BME680_OS_2X; + + bme680.gas_sett.run_gas = BME680_ENABLE_GAS_MEAS; + bme680.gas_sett.heatr_dur = 100; + bme680.gas_sett.heatr_temp = 300; + bme680.setSensorSettings(BME680_OST_SEL | BME680_OSP_SEL | BME680_OSH_SEL | BME680_GAS_SENSOR_SEL); +} + +void loop(void) +{ + static unsigned char i = 0; + + if (lux >= 0 && bme680_status == 0) { + gpio.led_off(0); + } else { + gpio.led_on(0); + } + +#ifdef POWER_PIN + if (lux < 0 || bme680_status != 0) { + if (i == 17) { + kout << "# Cycling power to I2C clients" << endl; + gpio.write(POWER_PIN, 0); + } else if (i == 18) { + gpio.write(POWER_PIN, 1); + } else if (i == 19) { + bme680_init(); + } + } +#endif + +#ifdef MULTIPASS_ARCH_arduino_nano + if ((i == 1) && (ADCSRA & _BV(ADIF))) { + uint8_t adcr_l = ADCL; + uint8_t adcr_h = ADCH; + uint16_t adcr = adcr_l + (adcr_h << 8); + uint16_t vcc = 1100L * 1023 / adcr; + + TIFR1 |= _BV(TOV1); + ADCSRA |= _BV(ADIF); + + kout << "VCC: " << vcc << endl; + } +#endif + + if (i == 0) { + lux = max44009.getLux(); + if (lux >= 0) { + kout << "MAX44009: "; + kout.printf_float(max44009.getLux()); + kout << " lx" << endl; + } else { + kout << "# MAX44009 error" << endl; + } + } + + if (i == 1 && bme680_status == 0) { + bme680_status = bme680.setSensorMode(); + } + else if (i == 2) { + if (bme680_status == 0) { + bme680_status = bme680.getSensorData(&data); + } + if (bme680_status == 0) { + bme680.amb_temp = data.temperature; + kout << "BME680 temperature: " << data.temperature << " degC" << endl; + kout << "BME680 humidity: " << data.humidity << " %" << endl; + kout << "BME680 pressure: " << data.pressure / 100 << " hPa" << endl; + kout << "BME680 gas resistance: " << data.gas_resistance << endl; + } else { + kout << "# BME680 error " << bme680_status << endl; + } + } + + i = (i + 1) % 20; +} + +int main(void) +{ + arch.setup(); + gpio.setup(); + kout.setup(); + +#ifdef POWER_PIN + gpio.output(POWER_PIN); + gpio.write(POWER_PIN, 1); +#endif + +#ifdef MULTIPASS_ARCH_arduino_nano + + kout << "# Reset reason: " << MCUSR << endl; + MCUSR = 0; + + /* watchdog reset after ~4 seconds */ + asm("wdr"); + WDTCSR = _BV(WDCE) | _BV(WDE); + WDTCSR = _BV(WDE) | _BV(WDP3); + + // One ADC conversion per four seconds + TCCR0A = 0; + TCCR0B = _BV(CS12) | _BV(CS10); + + // Measure internal 1.1V bandgap using VCC as reference on each Timer 0 overflow + ADMUX = _BV(REFS0) | 0x0e; + ADCSRB = _BV(ADTS2); + ADCSRA = _BV(ADEN) | _BV(ADATE) | _BV(ADPS2) | _BV(ADPS1); +#endif + + while (i2c.setup() != 0) { + kout << "# I2C setup failed" << endl; + arch.delay_ms(100); + } + + kout << "# I2C setup OK" << endl; + + bme680.intf = BME680_I2C_INTF; + bme680.read = bme680_i2c_read; + bme680.write = bme680_i2c_write; + bme680.delay_ms = bme680_delay_ms; + + bme680.amb_temp = 25; + + bme680_init(); + + arch.idle_loop(); + + return 0; +} |