arthurr/esp-air-monitor
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Started on DS18B20 and PMS5003

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Didn't realise DS18B20 was 1-Wire

Will probably just find a library for that one - can't be arsed
doing more bit banging
This commit is contained in:
Arthur Roberts
2023-11-01 21:12:39 +00:00
parent 8aeade9922
commit 2b117b4b33
8 changed files with 132 additions and 46 deletions
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60
main/main.c
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@@ -14,18 +14,20 @@
#include "portmacro.h"
#include "sdkconfig.h"
#include "wifi.h"
#include <inttypes.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <inttypes.h>
static const char *TAG = "YASPAM";
static volatile bool run_dht = true;
static volatile bool run_pms5003 = true;
static volatile bool run_ds18b20 = true;
static TaskHandle_t dht22_handle = NULL;
static TaskHandle_t pms5003_handle = NULL;
static TaskHandle_t ds18b20_handle = NULL;
typedef struct {
uint8_t myt_sec; // 0 -> 61
@@ -36,14 +38,25 @@ typedef struct {
uint8_t myt_year; // years since 1900
} my_time;
#ifdef CONFIG_DS18B20_ENABLED
#include "ds18b20.h"
void read_from_ds18b20() {
ESP_LOGI(TAG, "Starting DS18B20 Task");
while (run_pms5003) {
int ret = ds18b20_read();
vTaskDelay(pdMS_TO_TICKS(CONFIG_DS18B20_PERIOD_POLL * 1000));
}
}
#endif /* CONFIG_PMS5003_ENABLED */
#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
int ret = pms5003_read();
vTaskDelay(pdMS_TO_TICKS(CONFIG_PMS5003_PERIOD_POLL * 1000));
}
}
@@ -64,7 +77,7 @@ void read_from_dht22() {
// From datasheet:
// - Don't start within 1 second of powering on
vTaskDelay(pdMS_TO_TICKS(1000));
ESP_LOGI(TAG, "Starting DHT22 Task");
uint32_t num_samples_last_ten_mins = 0;
float relative_humidity_tmp;
float temperature_tmp;
@@ -77,6 +90,9 @@ void read_from_dht22() {
} else {
latest_datapoint.temp = dht22_temperature();
latest_datapoint.rh = dht22_relative_humidity();
ESP_LOGI(TAG,
"Sucesfully obtained DHT22 data (temp: %"PRIi16" rh: %"PRIu16")",
latest_datapoint.temp, latest_datapoint.rh);
// No point collecting rolling average if we don't know what the time is
if (has_ntp_time_obtained_once()) {
@@ -85,21 +101,22 @@ void read_from_dht22() {
temperature_tmp = latest_datapoint.temp;
} else {
relative_humidity_tmp +=
((float) latest_datapoint.rh - relative_humidity_tmp) /
((float) num_samples_last_ten_mins + 1.0);
temperature_tmp +=
((float) latest_datapoint.temp - temperature_tmp ) /
((float) num_samples_last_ten_mins + 1.0);
((float)latest_datapoint.rh - relative_humidity_tmp) /
((float)num_samples_last_ten_mins + 1.0);
temperature_tmp += ((float)latest_datapoint.temp - temperature_tmp) /
((float)num_samples_last_ten_mins + 1.0);
}
num_samples_last_ten_mins += 1;
ESP_LOGI(TAG, "latest_datapoint.temp: %"PRIi16, latest_datapoint.temp);
ESP_LOGI(TAG, "ten_minute_average.temp: %f, num_samples: %"PRIu32, temperature_tmp, num_samples_last_ten_mins);
ESP_LOGI(TAG, "latest_datapoint.temp: %" PRIi16, latest_datapoint.temp);
ESP_LOGI(TAG, "ten_minute_average.temp: %f, num_samples: %" PRIu32,
temperature_tmp, num_samples_last_ten_mins);
// This should be: if (10 minutes of sample taken)
// TODO: check max samples / second that can fit in 10 minutes
if (num_samples_last_ten_mins >=
((10 * 60) / (CONFIG_DHT22_PERIOD_POLL))) {
ESP_LOGW(TAG, "10 minutes of samples collected. Average temp: %f", temperature_tmp);
ESP_LOGW(TAG, "10 minutes of samples collected. Average temp: %f",
temperature_tmp);
num_samples_last_ten_mins = 0;
time_t epoch;
@@ -116,12 +133,14 @@ void read_from_dht22() {
ten_minute_average.time.myt_month = timeinfo->tm_mon;
ten_minute_average.time.myt_year = timeinfo->tm_year;
// TODO: Consider rounding this number - although, .1 of a degree C
// TODO: Consider rounding this number - although, .1 of a degree C...
// no one is going to miss that. Probably the calculation require to
// do the rounding would affect the temperature that much anyways haha
// do the rounding would affect the temperature that much anyways
// haha
ten_minute_average.temp = temperature_tmp;
ten_minute_average.rh = relative_humidity_tmp;
ESP_LOGW(TAG, "ten_min_avg.temp %" PRIi16 ", .rh %" PRIu16, ten_minute_average.temp, ten_minute_average.rh);
ESP_LOGW(TAG, "ten_min_avg.temp %" PRIi16 ", .rh %" PRIu16,
ten_minute_average.temp, ten_minute_average.rh);
// TODO: Write the data out somewhere - into RAM maybe
// TODO: maybe push the data somewhere - or put a flag up that data
@@ -163,6 +182,13 @@ void app_main(void) {
&pms5003_handle);
#endif /* CONFIG_PMS5003_ENABLED */
start_wifi();
#ifdef CONFIG_DS18B20_ENABLED
xTaskCreate(read_from_ds18b20, "DS18B20",
4 * 1024, // honestly I have _no_ idea
NULL,
5, // no idea either
&ds18b20_handle);
#endif /* CONFIG DS18B20_ENABLED */
// start_wifi();
}