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Paul D.Smith
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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| /* | ||
| * Copyright (c) 2023 Paul D.Smith ([email protected]). | ||
| * License: Free to copy providing the author is acknowledged. | ||
| * | ||
| * Configuration store using ESP-IDF no-volatile storage. | ||
| * https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/storage/nvs_flash.html?highlight=non%20volatile | ||
| * | ||
| * Note that this API operates on the default NVRAM partition. | ||
| */ | ||
| #include <stdio.h> | ||
| #include "sdkconfig.h" | ||
| #include "freertos/FreeRTOS.h" | ||
| #include "freertos/task.h" | ||
| #include "freertos/queue.h" | ||
| /** | ||
| * Allow logging in this file; disabled unless explcitly set. | ||
| */ | ||
| #define LOG_LOCAL_LEVEL ESP_LOG_VERBOSE | ||
| #include "esp_log.h" | ||
| #include "esp_wifi.h" | ||
| #include "esp_event.h" | ||
| #include "esp_timer.h" | ||
| #include "driver/gpio.h" | ||
| #include "mqtt_client.h" | ||
|
|
||
| #include "cs_cfg.h" | ||
| #include "cs_flash.h" | ||
| #include "cs_zigbee.h" | ||
|
|
||
| #define TAG cs_flash_task_name | ||
|
|
||
| ESP_EVENT_DEFINE_BASE(CS_FLASH_EVENT); | ||
|
|
||
| /* This is a little naughty, but we know it does exist! */ | ||
| ESP_EVENT_DECLARE_BASE(MQTT_EVENTS); | ||
|
|
||
| esp_event_loop_handle_t flash_event_loop_handle; | ||
|
|
||
| #define STATUS_WIFI_SOFTAP_CONNECTED 0x01 | ||
| #define STATUS_WIFI_AP_CONNECTED 0x02 | ||
| #define STATUS_MQTT_CONNECTED 0x04 | ||
| #define STATUS_ZIGBEE_CONNECTED 0x08 | ||
|
|
||
| #define ALL_ZIGBEE_ACTIVE 0x0F | ||
| #define ALL_MQTT_ACTIVE 0x07 | ||
| #define ALL_WIFI_AP_ACTIVE 0x03 | ||
| #define ALL_WIFI_SOFTAP_ACTIVE 0x01 | ||
|
|
||
| #define BLUE_LED GPIO_NUM_3 | ||
|
|
||
| esp_timer_handle_t flash_timer_handle = NULL; | ||
|
|
||
| static int flashes_per_cycle = 0; | ||
|
|
||
| static void led_on() | ||
| { | ||
| esp_timer_stop(flash_timer_handle); | ||
| ESP_ERROR_CHECK(gpio_set_level(BLUE_LED, 1)); | ||
| } | ||
|
|
||
| static void led_off() | ||
| { | ||
| esp_timer_stop(flash_timer_handle); | ||
| ESP_ERROR_CHECK(gpio_set_level(BLUE_LED, 0)); | ||
| } | ||
|
|
||
| #define FLASH_TIME_PERIOD (uint64_t)1000 * 500 | ||
| static void led_flash(int flashes) | ||
| { | ||
| // TODO: Much nicer if we get rid of globals. | ||
| flashes_per_cycle = flashes; | ||
| if (!esp_timer_is_active(flash_timer_handle)) | ||
| { | ||
| esp_timer_start_periodic(flash_timer_handle, FLASH_TIME_PERIOD); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * The timer is intended to flash as follows: | ||
| * on, off, off, off | ||
| * on, off, on, off, off, off | ||
| * on, off, on, off, on, off, off, off | ||
| * So a sequence of X (on, off) followed by (off, off). | ||
| */ | ||
| void flash_timer_cb(void *arg) | ||
| { | ||
| static int count = 0; | ||
| static bool lit = false; | ||
|
|
||
| if (lit) | ||
| { | ||
| /* From lit, always off. */ | ||
| led_off(); | ||
| } | ||
| else | ||
| { | ||
| if (count <= 0) | ||
| { | ||
| /* Time for next cycle but LED stays off for this cycle. */ | ||
| count = flashes_per_cycle; | ||
| } | ||
| else | ||
| { | ||
| /* Turn the LED on. */ | ||
| led_on(); | ||
| } | ||
| count--; | ||
| } | ||
| lit = !lit; | ||
| } | ||
|
|
||
| void update_flash_status(uint8_t status) | ||
| { | ||
| if ((status & ALL_ZIGBEE_ACTIVE) == ALL_ZIGBEE_ACTIVE) | ||
| { | ||
| led_on(); | ||
| } | ||
| else if ((status & ALL_MQTT_ACTIVE) == ALL_MQTT_ACTIVE) | ||
| { | ||
| led_flash(3); | ||
| } | ||
| else if ((status & ALL_WIFI_AP_ACTIVE) == ALL_WIFI_AP_ACTIVE) | ||
| { | ||
| led_flash(2); | ||
| } | ||
| else if ((status & ALL_WIFI_SOFTAP_ACTIVE) == ALL_WIFI_SOFTAP_ACTIVE) | ||
| { | ||
| led_flash(1); | ||
| } | ||
| else | ||
| { | ||
| led_off(); | ||
| } | ||
| } | ||
|
|
||
| /*** | ||
| * Status of the device will be identified as follows: | ||
| * - No light, not even SoftAP is ready. | ||
| * - Single flash, SoftAP web server is available | ||
| * - Double flash, also connected to AP (router) | ||
| * - Triple flash, also connected to Azure IotHub | ||
| * - Solid blue, also receiving and relaying ZigBee messages. | ||
| */ | ||
|
|
||
| static void event_handler(void *arg, esp_event_base_t event_base, | ||
| int32_t event_id, void *event_data) | ||
| { | ||
| uint8_t status = 0; | ||
|
|
||
| if (event_base == WIFI_EVENT) | ||
| { | ||
| switch (event_id) | ||
| { | ||
| case WIFI_EVENT_AP_STACONNECTED: | ||
| status |= STATUS_WIFI_SOFTAP_CONNECTED; | ||
| break; | ||
|
|
||
| case WIFI_EVENT_AP_STADISCONNECTED: | ||
| status &= ~STATUS_WIFI_SOFTAP_CONNECTED; | ||
| break; | ||
|
|
||
| case WIFI_EVENT_STA_CONNECTED: | ||
| status |= STATUS_WIFI_AP_CONNECTED; | ||
| break; | ||
|
|
||
| case WIFI_EVENT_STA_DISCONNECTED: | ||
| status &= ~STATUS_WIFI_AP_CONNECTED; | ||
| break; | ||
|
|
||
| default: | ||
| ESP_LOGE(TAG, "Unexpected flash event: %d", event_id); | ||
| break; | ||
| } | ||
| } | ||
| else if (event_base == MQTT_EVENTS) | ||
| { | ||
| switch (event_id) | ||
| { | ||
| case MQTT_EVENT_CONNECTED: | ||
| status |= STATUS_MQTT_CONNECTED; | ||
| break; | ||
|
|
||
| case MQTT_EVENT_DISCONNECTED: | ||
| status &= ~STATUS_MQTT_CONNECTED; | ||
| break; | ||
|
|
||
| default: | ||
| ESP_LOGE(TAG, "Unexpected flash event: %d", event_id); | ||
| break; | ||
| } | ||
| } | ||
| else if (event_base == CS_ZIGBEE_EVENT) | ||
| { | ||
| switch (event_id) | ||
| { | ||
| case CS_ZIGBEE_EVENT_CONNECTED: | ||
| status |= STATUS_ZIGBEE_CONNECTED; | ||
| break; | ||
|
|
||
| case CS_ZIGBEE_EVENT_DISCONNECTED: | ||
| status &= ~STATUS_ZIGBEE_CONNECTED; | ||
| break; | ||
|
|
||
| default: | ||
| ESP_LOGE(TAG, "Unexpected flash event: %d", event_id); | ||
| break; | ||
| } | ||
| } | ||
| else | ||
| { | ||
| ESP_LOGE(TAG, "Unexpected event: %s, %d", event_base, event_id); | ||
| } | ||
| update_flash_status(status); | ||
| } | ||
|
|
||
| void cs_flash_task(cs_flash_create_parms_t *create_parms) | ||
| { | ||
| static int flashes = 0; | ||
|
|
||
| flash_event_loop_handle = create_parms->flash_event_loop_handle; | ||
|
|
||
| /** | ||
| * We can listen for WiFi events but only on the default event loop and | ||
| * we cannot register for MQTT events because they are obfuscated. So we | ||
| * rely on the various components sending events to our handler. | ||
| */ | ||
| ESP_ERROR_CHECK(esp_event_handler_instance_register_with( | ||
| flash_event_loop_handle, | ||
| WIFI_EVENT, | ||
| ESP_EVENT_ANY_ID, | ||
| event_handler, | ||
| (void *)&flashes, | ||
| NULL)); | ||
| ESP_ERROR_CHECK(esp_event_handler_instance_register_with( | ||
| flash_event_loop_handle, | ||
| MQTT_EVENTS, | ||
| ESP_EVENT_ANY_ID, | ||
| event_handler, | ||
| (void *)&flashes, | ||
| NULL)); | ||
| ESP_ERROR_CHECK(esp_event_handler_instance_register_with( | ||
| flash_event_loop_handle, | ||
| CS_ZIGBEE_EVENT, | ||
| ESP_EVENT_ANY_ID, | ||
| event_handler, | ||
| (void *)&flashes, | ||
| NULL)); | ||
| } |
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