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#include "freertos/FreeRTOS.h"
#include "network.h"
#include "freertos/task.h"
#include "esp_log.h"
#include "hal/gpio_types.h"
#include <driver/gpio.h>
#include <stdio.h>
#include "hal/adc_types.h"
#include "esp_adc/adc_oneshot.h"
#include "config.h"
#define TAG "sprayduck"
/**
* @brief Read the value from the soil sensor and return the average over 5
* consectuive readings
*
* @param[in] handler The adc_oneshot_unit_handle_t handler responsible for
* reading the value from the sensor
* @return Average of 5 oneshot readings, attuned by ADC_UNIT_1
*/
int read_sensor(adc_oneshot_unit_handle_t handler) {
int sum = 0;
int i = 0;
for (i = 0; i < 5; i++) {
int value = 0;
ESP_ERROR_CHECK(adc_oneshot_read(handler, SENSOR_CHANNEL, &value));
ESP_LOGI(TAG, "ADC%d Channel[%d] Raw Data: %d", ADC_UNIT_1 + 1, SENSOR_CHANNEL, value);
sum += value;
}
return sum / 5;
}
void app_main(void)
{
setup_network();
gpio_reset_pin(FLIP_GPIO_PIN);
gpio_set_direction(FLIP_GPIO_PIN, GPIO_MODE_OUTPUT);
gpio_reset_pin(SENSOR_GPIO_PIN);
gpio_set_direction(SENSOR_GPIO_PIN, GPIO_MODE_OUTPUT);
adc_oneshot_unit_handle_t handler;
adc_oneshot_unit_init_cfg_t adc_config = {
.unit_id = ADC_UNIT_1,
.ulp_mode = ADC_ULP_MODE_DISABLE,
};
ESP_ERROR_CHECK(adc_oneshot_new_unit(&adc_config, &handler));
adc_oneshot_chan_cfg_t channel_config = {
.bitwidth = ADC_BITWIDTH_DEFAULT,
.atten = ADC_ATTEN_DB_12,
};
ESP_ERROR_CHECK(adc_oneshot_config_channel(handler, SENSOR_CHANNEL, &channel_config));
gpio_set_level((gpio_num_t) FLIP_GPIO_PIN, 1);
while (1) {
//Turn on sensor
gpio_set_level((gpio_num_t) SENSOR_GPIO_PIN, 1);
int value = read_sensor(handler);
ESP_LOGI("sprayduck", "Checking sensor value average %d", value);
if (value > THRESHOLD) {
ESP_LOGI("sprayduck", "Pouring water");
gpio_set_level((gpio_num_t) FLIP_GPIO_PIN, 0);
} else {
ESP_LOGI("sprayduck", "Stopping the water");
gpio_set_level((gpio_num_t) FLIP_GPIO_PIN, 1);
}
// Turn off Sensor
gpio_set_level((gpio_num_t) SENSOR_GPIO_PIN, 0);
char data[4];
sprintf(data, "%d", value);
send_packet(data);
vTaskDelay(1000 / portTICK_PERIOD_MS);
}
}
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