/* This example code is in the Public Domain (or CC0 licensed, at your option.) Unless required by applicable law or agreed to in writing, this software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */ #include #include #include #include #include "freertos/FreeRTOS.h" #include "freertos/task.h" #include "freertos/timers.h" #include "esp_system.h" #include "esp_log.h" #include "driver/gpio.h" #include "led.h" #define MAX_LED 8 #define BLOCKTIME 10 // up to portMAX_DELAY static struct led_s { gpio_num_t gpio; bool on; int onstate; int ontime, offtime; int pushedon, pushedoff; bool pushed; TimerHandle_t timer; } leds[MAX_LED]; static void vCallbackFunction( TimerHandle_t xTimer ) { struct led_s *led = (struct led_s*) pvTimerGetTimerID (xTimer); if (!led->timer) return; led->on = !led->on; gpio_set_level(led->gpio, led->on ? led->onstate : !led->onstate); // was just on for a while if (!led->on && led->offtime == -1) return; // regular blinking xTimerChangePeriod(xTimer, (led->on ? led->ontime : led->offtime) / portTICK_RATE_MS, BLOCKTIME); } bool led_blink_core(int idx, int ontime, int offtime, bool pushed) { if (!leds[idx].gpio) return false; if (leds[idx].timer) { // normal requests waits if a pop is pending if (!pushed && leds[idx].pushed) { leds[idx].pushedon = ontime; leds[idx].pushedoff = offtime; return true; } xTimerStop(leds[idx].timer, BLOCKTIME); } // save current state if not already pushed if (!leds[idx].pushed) { leds[idx].pushedon = leds[idx].ontime; leds[idx].pushedoff = leds[idx].offtime; leds[idx].pushed = pushed; } // then set new one leds[idx].ontime = ontime; leds[idx].offtime = offtime; if (ontime == 0) { gpio_set_level(leds[idx].gpio, !leds[idx].onstate); } else if (offtime == 0) { gpio_set_level(leds[idx].gpio, leds[idx].onstate); } else { if (!leds[idx].timer) leds[idx].timer = xTimerCreate("ledTimer", ontime / portTICK_RATE_MS, pdFALSE, (void *)&leds[idx], vCallbackFunction); leds[idx].on = true; gpio_set_level(leds[idx].gpio, leds[idx].onstate); if (xTimerStart(leds[idx].timer, BLOCKTIME) == pdFAIL) return false; } return true; } bool led_unpush(int idx) { if (!leds[idx].gpio) return false; led_blink_core(idx, leds[idx].pushedon, leds[idx].pushedoff, true); leds[idx].pushed = false; return true; } bool led_config(int idx, gpio_num_t gpio, int onstate) { if (idx >= MAX_LED) return false; leds[idx].gpio = gpio; leds[idx].onstate = onstate; gpio_pad_select_gpio(gpio); gpio_set_direction(gpio, GPIO_MODE_OUTPUT); gpio_set_level(gpio, !onstate); return true; } bool led_unconfig(int idx) { if (idx >= MAX_LED) return false; if (leds[idx].timer) xTimerDelete(leds[idx].timer, BLOCKTIME); return true; }