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https://github.com/espressif/esp-rainmaker.git
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8854443e4e
esp_timer is generally recommended when high precision is required. However, since that is not the case for periodic reporting of temperature values, replaced it with freeRTOS Timer.
86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
/* Temperature Sensor demo implementation using RGB LED and timer
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This example code is in the Public Domain (or CC0 licensed, at your option.)
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Unless required by applicable law or agreed to in writing, this
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software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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CONDITIONS OF ANY KIND, either express or implied.
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*/
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#include <freertos/FreeRTOS.h>
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#include <freertos/timers.h>
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#include <sdkconfig.h>
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#include <esp_rmaker_core.h>
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#include <esp_rmaker_standard_types.h>
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#include <esp_rmaker_standard_params.h>
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#include <app_reset.h>
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#include <ws2812_led.h>
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#include "app_priv.h"
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/* This is the button that is used for toggling the power */
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#define BUTTON_GPIO CONFIG_EXAMPLE_BOARD_BUTTON_GPIO
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#define BUTTON_ACTIVE_LEVEL 0
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/* This is the GPIO on which the power will be set */
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#define OUTPUT_GPIO 19
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static TimerHandle_t sensor_timer;
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#define DEFAULT_SATURATION 100
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#define DEFAULT_BRIGHTNESS 50
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#define WIFI_RESET_BUTTON_TIMEOUT 3
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#define FACTORY_RESET_BUTTON_TIMEOUT 10
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static uint16_t g_hue;
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static uint16_t g_saturation = DEFAULT_SATURATION;
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static uint16_t g_value = DEFAULT_BRIGHTNESS;
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static float g_temperature;
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static void app_sensor_update(TimerHandle_t handle)
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{
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static float delta = 0.5;
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g_temperature += delta;
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if (g_temperature > 99) {
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delta = -0.5;
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} else if (g_temperature < 1) {
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delta = 0.5;
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}
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g_hue = (100 - g_temperature) * 2;
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ws2812_led_set_hsv(g_hue, g_saturation, g_value);
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esp_rmaker_param_update_and_report(
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esp_rmaker_device_get_param_by_type(temp_sensor_device, ESP_RMAKER_PARAM_TEMPERATURE),
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esp_rmaker_float(g_temperature));
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}
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float app_get_current_temperature()
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{
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return g_temperature;
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}
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esp_err_t app_sensor_init(void)
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{
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esp_err_t err = ws2812_led_init();
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if (err != ESP_OK) {
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return err;
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}
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g_temperature = DEFAULT_TEMPERATURE;
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sensor_timer = xTimerCreate("app_sensor_update_tm", (REPORTING_PERIOD * 1000) / portTICK_PERIOD_MS,
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pdTRUE, NULL, app_sensor_update);
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if (sensor_timer) {
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xTimerStart(sensor_timer, 0);
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g_hue = (100 - g_temperature) * 2;
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ws2812_led_set_hsv(g_hue, g_saturation, g_value);
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return ESP_OK;
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}
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return ESP_FAIL;
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}
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void app_driver_init()
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{
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app_sensor_init();
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app_reset_button_register(app_reset_button_create(BUTTON_GPIO, BUTTON_ACTIVE_LEVEL),
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WIFI_RESET_BUTTON_TIMEOUT, FACTORY_RESET_BUTTON_TIMEOUT);
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}
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