138 lines
3.6 KiB
C
138 lines
3.6 KiB
C
#include "bme280.h"
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#include "pico/stdlib.h"
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#include "pms5003.h"
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#include <hardware/gpio.h>
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#include <hardware/i2c.h>
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#include <hardware/uart.h>
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#include <pico/time.h>
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#include <pico/types.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdio.h>
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#define LOOP_INTERVAL_MS 5000
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// #define LOOP_INTERVAL_MS 30000
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/**
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* Balcony Weather Station Node 1
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* record sensor data and send it to home assistant every 5 minutes
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*/
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void comms_led_init() {
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gpio_init(16);
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gpio_set_dir(16, GPIO_OUT);
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}
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absolute_time_t comms_led_off_time;
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int16_t comms_led_blink_count = 0;
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bool comms_led_state = false;
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void comms_led_blink() {
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printf("COMMS LED BLINK COUNT: %d\n", comms_led_blink_count);
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comms_led_blink_count++;
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if(!comms_led_state) {
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gpio_put(16, true);
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comms_led_state = true;
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}
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comms_led_off_time = make_timeout_time_ms(1000);
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}
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void comms_led_update() {
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if (comms_led_state && time_reached(comms_led_off_time)) {
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gpio_put(16, false);
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comms_led_state = false;
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}
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}
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static pms5003_config pms_config;
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static pms5003_reading current_pms5003_reading;
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static bme280_config bem_config;
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static bme280_reading current_bem280_reading;
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static bme280_reading bem280_readings[10];
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static int8_t readings_index = 0;
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static bme280_reading calculate_average_bme280_reading() {
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float tempSum = 0;
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float pressureSum = 0;
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float humiditySum = 0;
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for (int i = 0; i < 10; i++) {
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tempSum += bem280_readings[i].temperature;
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pressureSum += bem280_readings[i].pressure;
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humiditySum += bem280_readings[i].humidity;
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}
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bme280_reading average_reading = {.temperature = tempSum / 10,
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.pressure = pressureSum / 10,
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.humidity = humiditySum / 10};
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return average_reading;
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}
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/**
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* Callback function called every 30 seconds
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*/
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static bool cb_30(__unused struct repeating_timer *t) {
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comms_led_blink();
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printf("cb_30: %d\n", readings_index);
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if (readings_index >= 10) {
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printf("Preparing data to send\n");
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readings_index = 0;
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// Calculate average BME280 reading
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current_bem280_reading = calculate_average_bme280_reading();
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printf("Tempature: %.2f\n", current_bem280_reading.temperature);
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printf("Pressure: %.2f\n", current_bem280_reading.pressure);
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printf("Humidity: %.2f\n", current_bem280_reading.humidity);
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printf("PM1: %.2f\n", current_pms5003_reading.pm1);
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printf("PM2.5: %.2f\n", current_pms5003_reading.pm2_5);
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printf("PM10: %.2f\n", current_pms5003_reading.pm10);
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printf("Sending data to home assistant...\n");
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// TODO: Send data to home assistant
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return true;
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}
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// Read BME280
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printf("Making BME280 Reading\n");
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current_bem280_reading = bme280_read(&bem_config);
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bem280_readings[readings_index] = current_bem280_reading;
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if (readings_index == 2) {
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printf("Warming up PMSS5003\n");
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pms5003_warmup(&pms_config);
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}
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if (readings_index == 4) {
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printf("Starting reads on PMSS5003\n");
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pms5003_start_reading(&pms_config);
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}
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if (readings_index == 6) {
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printf("Finished reading PMSS5003\n");
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current_pms5003_reading = pms5003_finish_reading(&pms_config);
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}
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readings_index++;
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return true;
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};
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int main() {
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stdio_init_all();
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// Initialize communication LED
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comms_led_init();
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// Setup BME280
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bme280_init(&bem_config, i2c1, 14, 15);
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// Setup PMS5003
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pms5003_init(&pms_config, uart1, 20, 21, 18, 19);
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struct repeating_timer timer_30;
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add_repeating_timer_ms(LOOP_INTERVAL_MS, cb_30, NULL, &timer_30);
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while (true) {
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comms_led_update();
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sleep_us(100);
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tight_loop_contents();
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}
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}
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