add arduino-nano bme680-max44009-datalogger

1 files changed, 104 insertions, 0 deletions

diff --git a/src/app/bme680-max44009-logger/main.cc b/src/app/bme680-max44009-logger/main.cc
new file mode 100644
index 0000000..a8d4c2e
--- /dev/null
+++ b/src/app/bme680-max44009-logger/main.cc
@@ -0,0 +1,104 @@
+/*
+ * Copyright 2021 Daniel Friesel
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+#include "arch.h"
+#include "driver/gpio.h"
+#include "driver/stdout.h"
+#if defined(MULTIPASS_ARCH_HAS_I2C) && !defined(DRIVER_SOFTI2C)
+#include "driver/i2c.h"
+#else
+#include "driver/soft_i2c.h"
+#endif
+#include "driver/bme680.h"
+#include "driver/bme680_util.h"
+#include "driver/max44009.h"
+
+struct bme680_field_data data;
+
+void loop(void)
+{
+	static unsigned char i = 0;
+
+	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;
+	}
+
+	if (i == 0) {
+		bme680.setSensorMode();
+	}
+	else if (i == 1) {
+		if (bme680.getSensorData(&data) == 0) {
+			kout << "BME680 temperature: " << (float)data.temperature / 100 << " degC" << endl;
+			kout << "BME680 humidity: " << (float)data.humidity / 1000  << " %" << endl;
+			kout << "BME680 pressure: " << (float)data.pressure / 100 << " hPa" << endl;
+			kout << "BME680 gas resistance: " << data.gas_resistance << endl;
+		}
+		kout << "MAX44009: ";
+		kout.printf_float(max44009.getLux());
+		kout << " lx" << endl;
+	}
+
+	i = (i + 1) % 20;
+}
+
+int main(void)
+{
+	unsigned short i = 0;
+
+	arch.setup();
+	gpio.setup();
+	kout.setup();
+
+	// 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);
+
+	if (i2c.setup() != 0) {
+		kout << "I2C setup failed" << endl;
+		return 1;
+	}
+
+	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;
+
+	int8_t rslt = BME680_OK;
+	rslt = bme680.init();
+	kout << "BME680 init " << rslt << 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);
+
+	arch.delay_ms(200);
+
+	arch.idle_loop();
+
+	return 0;
+}