Files
esp-air-monitor/main/main.c

137 lines
3.5 KiB
C

/**
* Author: Arthur Roberts (c) 2023
*
* License: GPLv3+
*/
#include "dht22.h"
#include "wifi.h"
#include "esp_log.h"
#include "esp_sntp.h"
#include "freertos/FreeRTOS.h"
#include "freertos/projdefs.h"
#include "freertos/task.h"
#include "nvs_flash.h"
#include "portmacro.h"
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
static const char* TAG = "YASPAM";
static volatile bool run_dht = true;
static volatile bool run_pms5003 = true;
static TaskHandle_t dht22_handle = NULL;
static TaskHandle_t pms5003_handle = NULL;
typedef struct {
uint8_t myt_sec; // 0 -> 61
uint8_t myt_min; // 0 -> 69
uint8_t myt_hour; // 0 -> 23
uint8_t myt_day; // 1 -> 31
uint8_t myt_month; // 0 -> 11 !!
uint8_t myt_year; // years since 1900
} my_time;
#ifdef CONFIG_PMS5003_ENABLED
#include "pms5003.h"
void
read_from_pms5003()
{
while (run_pms5003) {
// TODO: actually collect some data
ESP_LOGI(TAG, "Got PMS5003 data!");
// TODO: Write the data out somewhere
vTaskDelay(pdMS_TO_TICKS(CONFIG_PMS5003_PERIOD_POLL));
}
}
#endif /* CONFIG_PMS5003_ENABLED */
#ifdef CONFIG_DHT22_ENABLED
#include "dht22.h"
typedef struct {
deci_percent rh;
deci_degrees_c temp;
my_time time;
} my_dht22_data;
my_dht22_data latest_datapoint;
my_dht22_data ten_minute_rolling_average;
uint16_t num_samples_last_ten_mins = 0;
void read_from_dht22() {
while (run_dht) {
// Data reading is based on time, so need to block interrups etc
// I _think_ these are freeRTOS task interrupts - I wonder if
// I need to also block ESP interrupts? Should I even do that?
portDISABLE_INTERRUPTS();
int ret = dht22_read();
portENABLE_INTERRUPTS();
if (ret != DHT22_OK) {
dht22_handle_error(ret);
} else {
latest_datapoint.temp = dht22_temperature();
latest_datapoint.rh = dht22_relative_humidity();
if (has_ntp_time_obtained_once()) {
time_t epoch;
time(&epoch);
struct tm *timeinfo = localtime(&epoch);
// There must be a better way - I couldn't figure out how to do it nicely all at once
latest_datapoint.time.myt_sec = timeinfo->tm_sec;
latest_datapoint.time.myt_min = timeinfo->tm_min;
latest_datapoint.time.myt_hour = timeinfo->tm_hour;
latest_datapoint.time.myt_day = timeinfo->tm_mday;
latest_datapoint.time.myt_month = timeinfo->tm_mon;
latest_datapoint.time.myt_year = timeinfo->tm_year;
// TODO: update ten minute rolling average
//
// TODO: Write the data out somewhere - into RAM maybe - I think only every 10 minutes
// though
}
}
vTaskDelay(pdMS_TO_TICKS(CONFIG_DHT22_PERIOD_POLL));
}
}
#endif /* CONFIG DHT22_ENABLED */
void
app_main(void)
{
esp_err_t ret = nvs_flash_init();
if (ret == ESP_ERR_NVS_NO_FREE_PAGES ||
ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
ESP_ERROR_CHECK(nvs_flash_erase());
ret = nvs_flash_init();
}
ESP_ERROR_CHECK(ret);
#ifdef CONFIG_DHT22_ENABLED
xTaskCreate(read_from_dht22,
"DHT22",
4 * 1024, // honestly I have _no_ idea
NULL,
5, // no idea either
&dht22_handle);
#endif /* CONFIG_DHT22_ENABLED */
#ifdef CONFIG_PMS5003_ENABLED
xTaskCreate(read_from_pms5003,
"PMS5003",
4 * 1024, // honestly I have _no_ idea
NULL,
5, // no idea either
&pms5003_handle);
#endif /* CONFIG_PMS5003_ENABLED */
start_wifi();
}