zh_nrf24/esp-idf-mirf-master/mqtt/main/main.c

/*	Mirf Example

	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 <stdio.h>
#include <inttypes.h>
#include <stdlib.h>
#include <string.h>

#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/event_groups.h"
#include "freertos/message_buffer.h"
#include "esp_system.h"
#include "esp_wifi.h"
#include "esp_event.h"
#include "esp_log.h"
#include "nvs_flash.h"
#include "mdns.h"

#include "mirf.h"
#include "mqtt.h"

/* FreeRTOS event group to signal when we are connected*/
static EventGroupHandle_t s_wifi_event_group;

/* The event group allows multiple bits for each event, but we only care about two events:
 * - we are connected to the AP with an IP
 * - we failed to connect after the maximum amount of retries */
#define WIFI_CONNECTED_BIT BIT0
#define WIFI_FAIL_BIT BIT1

static const char *TAG = "MAIN";

static int s_retry_num = 0;

MessageBufferHandle_t xMessageBufferTrans;
MessageBufferHandle_t xMessageBufferRecv;

// The total number of bytes (not single messages) the message buffer will be able to hold at any one time.
size_t xBufferSizeBytes = 1024;
// The size, in bytes, required to hold each item in the message,
size_t xItemSize = 32;

static void event_handler(void* arg, esp_event_base_t event_base, int32_t event_id, void* event_data)
{
	if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START) {
		esp_wifi_connect();
	} else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_DISCONNECTED) {
		if (s_retry_num < CONFIG_ESP_MAXIMUM_RETRY) {
			esp_wifi_connect();
			s_retry_num++;
			ESP_LOGI(TAG, "retry to connect to the AP");
		} else {
			xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT);
		}
		ESP_LOGI(TAG,"connect to the AP fail");
	} else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
		ip_event_got_ip_t* event = (ip_event_got_ip_t*) event_data;
		ESP_LOGI(TAG, "got ip:" IPSTR, IP2STR(&event->ip_info.ip));
		s_retry_num = 0;
		xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
	}
}


bool wifi_init_sta(void)
{
	bool ret = false;
	s_wifi_event_group = xEventGroupCreate();

	ESP_ERROR_CHECK(esp_netif_init());

	ESP_ERROR_CHECK(esp_event_loop_create_default());
	esp_netif_create_default_wifi_sta();

	wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
	ESP_ERROR_CHECK(esp_wifi_init(&cfg));

	esp_event_handler_instance_t instance_any_id;
	esp_event_handler_instance_t instance_got_ip;
	ESP_ERROR_CHECK(esp_event_handler_instance_register(WIFI_EVENT,
		ESP_EVENT_ANY_ID,
		&event_handler,
		NULL,
		&instance_any_id));
	ESP_ERROR_CHECK(esp_event_handler_instance_register(IP_EVENT,
		IP_EVENT_STA_GOT_IP,
		&event_handler,
		NULL,
		&instance_got_ip));

	wifi_config_t wifi_config = {
		.sta = {
			.ssid = CONFIG_ESP_WIFI_SSID,
			.password = CONFIG_ESP_WIFI_PASSWORD,
			/* Setting a password implies station will connect to all security modes including WEP/WPA.
			 * However these modes are deprecated and not advisable to be used. Incase your Access point
			 * doesn't support WPA2, these mode can be enabled by commenting below line */
			.threshold.authmode = WIFI_AUTH_WPA2_PSK,

			.pmf_cfg = {
				.capable = true,
				.required = false
			},
		},
	};
	ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA) );
	ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config) );
	ESP_ERROR_CHECK(esp_wifi_start() );

	ESP_LOGI(TAG, "wifi_init_sta finished.");

	/* Waiting until either the connection is established (WIFI_CONNECTED_BIT) or connection failed for the maximum
	 * number of re-tries (WIFI_FAIL_BIT). The bits are set by event_handler() (see above) */
	EventBits_t bits = xEventGroupWaitBits(s_wifi_event_group,
		WIFI_CONNECTED_BIT | WIFI_FAIL_BIT,
		pdFALSE,
		pdFALSE,
		portMAX_DELAY);

	/* xEventGroupWaitBits() returns the bits before the call returned, hence we can test which event actually
	 * happened. */
	if (bits & WIFI_CONNECTED_BIT) {
		ESP_LOGI(TAG, "connected to ap SSID:%s password:%s", CONFIG_ESP_WIFI_SSID, CONFIG_ESP_WIFI_PASSWORD);
		ret = true;
	} else if (bits & WIFI_FAIL_BIT) {
		ESP_LOGI(TAG, "Failed to connect to SSID:%s, password:%s", CONFIG_ESP_WIFI_SSID, CONFIG_ESP_WIFI_PASSWORD);
	} else {
		ESP_LOGE(TAG, "UNEXPECTED EVENT");
	}

	/* The event will not be processed after unregister */
	ESP_ERROR_CHECK(esp_event_handler_instance_unregister(IP_EVENT, IP_EVENT_STA_GOT_IP, instance_got_ip));
	ESP_ERROR_CHECK(esp_event_handler_instance_unregister(WIFI_EVENT, ESP_EVENT_ANY_ID, instance_any_id));
	vEventGroupDelete(s_wifi_event_group);
	return ret;
}

esp_err_t query_mdns_host(const char * host_name, char *ip)
{
	ESP_LOGD(__FUNCTION__, "Query A: %s", host_name);

	struct esp_ip4_addr addr;
	addr.addr = 0;

	esp_err_t err = mdns_query_a(host_name, 10000,	&addr);
	if(err){
		if(err == ESP_ERR_NOT_FOUND){
			ESP_LOGW(__FUNCTION__, "%s: Host was not found!", esp_err_to_name(err));
			return ESP_FAIL;
		}
		ESP_LOGE(__FUNCTION__, "Query Failed: %s", esp_err_to_name(err));
		return ESP_FAIL;
	}

	ESP_LOGD(__FUNCTION__, "Query A: %s.local resolved to: " IPSTR, host_name, IP2STR(&addr));
	sprintf(ip, IPSTR, IP2STR(&addr));
	return ESP_OK;
}

void convert_mdns_host(char * from, char * to)
{
	ESP_LOGI(__FUNCTION__, "from=[%s]",from);
	strcpy(to, from);
	char *sp;
	sp = strstr(from, ".local");
	if (sp == NULL) return;

	int _len = sp - from;
	ESP_LOGD(__FUNCTION__, "_len=%d", _len);
	char _from[128];
	strcpy(_from, from);
	_from[_len] = 0;
	ESP_LOGI(__FUNCTION__, "_from=[%s]", _from);

	char _ip[128];
	esp_err_t ret = query_mdns_host(_from, _ip);
	ESP_LOGI(__FUNCTION__, "query_mdns_host=%d _ip=[%s]", ret, _ip);
	if (ret != ESP_OK) return;

	strcpy(to, _ip);
	ESP_LOGI(__FUNCTION__, "to=[%s]", to);
}

#if CONFIG_ADVANCED
void AdvancedSettings(NRF24_t * dev)
{
#if CONFIG_RF_RATIO_2M
	ESP_LOGW(pcTaskGetName(0), "Set RF Data Ratio to 2MBps");
	Nrf24_SetSpeedDataRates(dev, 1);
#endif // CONFIG_RF_RATIO_2M

#if CONFIG_RF_RATIO_1M
	ESP_LOGW(pcTaskGetName(0), "Set RF Data Ratio to 1MBps");
	Nrf24_SetSpeedDataRates(dev, 0);
#endif // CONFIG_RF_RATIO_2M

#if CONFIG_RF_RATIO_250K
	ESP_LOGW(pcTaskGetName(0), "Set RF Data Ratio to 250KBps");
	Nrf24_SetSpeedDataRates(dev, 2);
#endif // CONFIG_RF_RATIO_2M

	ESP_LOGW(pcTaskGetName(0), "CONFIG_RETRANSMIT_DELAY=%d", CONFIG_RETRANSMIT_DELAY);
	Nrf24_setRetransmitDelay(dev, CONFIG_RETRANSMIT_DELAY);
}
#endif // CONFIG_ADVANCED

#if CONFIG_RECEIVER
void receiver(void *pvParameters)
{
	ESP_LOGI(pcTaskGetName(0), "Start");
	NRF24_t dev;
	Nrf24_init(&dev);
	uint8_t payload = 32;
	uint8_t channel = CONFIG_RADIO_CHANNEL;
	Nrf24_config(&dev, channel, payload);

	// Set my own address using 5 characters
	esp_err_t ret = Nrf24_setRADDR(&dev, (uint8_t *)"FGHIJ");
	if (ret != ESP_OK) {
		ESP_LOGE(pcTaskGetName(0), "nrf24l01 not installed");
		while(1) { vTaskDelay(1); }
	}

#if CONFIG_ADVANCED
	AdvancedSettings(&dev);
#endif // CONFIG_ADVANCED

	// Print settings
	Nrf24_printDetails(&dev);

	uint8_t buf[xItemSize];

	// Clear RX FiFo
	while(1) {
		if (Nrf24_dataReady(&dev) == false) break;
		Nrf24_getData(&dev, buf);
	}

	while(1) {
		// Wait for received data
		if (Nrf24_dataReady(&dev)) {
			Nrf24_getData(&dev, buf);
			ESP_LOGI(pcTaskGetName(NULL), "Nrf24_getData buf=[%.*s]",payload, buf);
			size_t spacesAvailable = xMessageBufferSpacesAvailable( xMessageBufferTrans );
			ESP_LOGI(pcTaskGetName(NULL), "spacesAvailable=%d", spacesAvailable);
			if (spacesAvailable < xItemSize*2) {
				ESP_LOGW(pcTaskGetName(NULL), "xMessageBuffer available less than %d", xItemSize*2);
			} else {
				size_t sended = xMessageBufferSend(xMessageBufferTrans, buf, payload, portMAX_DELAY);
				if (sended != payload) {
					ESP_LOGE(pcTaskGetName(NULL), "xMessageBufferSend fail");
				}
			}
		}
		vTaskDelay(1); // Avoid WatchDog alerts
	} // end while
}
#endif // CONFIG_RECEIVER


#if CONFIG_SENDER
void sender(void *pvParameters)
{
	ESP_LOGI(pcTaskGetName(0), "Start");
	NRF24_t dev;
	Nrf24_init(&dev);
	uint8_t payload = 32;
	uint8_t channel = CONFIG_RADIO_CHANNEL;
	Nrf24_config(&dev, channel, payload);

	// Set destination address using 5 characters
	esp_err_t ret = Nrf24_setTADDR(&dev, (uint8_t *)"FGHIJ");
	if (ret != ESP_OK) {
		ESP_LOGE(pcTaskGetName(0), "nrf24l01 not installed");
		while(1) { vTaskDelay(1); }
	}

#if CONFIG_ADVANCED
	AdvancedSettings(&dev);
#endif // CONFIG_ADVANCED

	// Print settings
	Nrf24_printDetails(&dev);

	ESP_LOGI(pcTaskGetName(0), "Wait for mqtt...");
	uint8_t buf[xItemSize];
	while(1) {
		size_t received = xMessageBufferReceive(xMessageBufferRecv, buf, sizeof(buf), portMAX_DELAY);
		ESP_LOGI(pcTaskGetName(NULL), "xMessageBufferReceive received=%d", received);
		Nrf24_send(&dev, buf);
		vTaskDelay(1);
		ESP_LOGI(pcTaskGetName(0), "Wait for sending.....");
		if (Nrf24_isSend(&dev, 1000)) {
			ESP_LOGI(pcTaskGetName(0),"Send success");
		} else {
			ESP_LOGW(pcTaskGetName(0),"Send fail");
		}
	}
}
#endif // CONFIG_SENDER

void mqtt_pub(void *pvParameters);
void mqtt_sub(void *pvParameters);
	
void app_main(void)
{
	// Initialize NVS
	esp_err_t ret = nvs_flash_init();
	if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
		ESP_ERROR_CHECK(nvs_flash_erase());
		ret = nvs_flash_init();
	}
	ESP_ERROR_CHECK(ret);

	// Initialize WiFi
	if (wifi_init_sta() == false) {
		while(1) vTaskDelay(10);
	}

	// Create MessageBuffer
	xMessageBufferTrans = xMessageBufferCreate(xBufferSizeBytes);
	configASSERT( xMessageBufferTrans );
	xMessageBufferRecv = xMessageBufferCreate(xBufferSizeBytes);
	configASSERT( xMessageBufferRecv );

	// Initialize mDNS
	ESP_ERROR_CHECK( mdns_init() );

#if CONFIG_SENDER
	xTaskCreate(&sender, "TX", 1024*3, NULL, 2, NULL);
	xTaskCreate(&mqtt_sub, "SUB", 1024*4, NULL, 2, NULL);
#endif
#if CONFIG_RECEIVER
	xTaskCreate(&receiver, "RX", 1024*3, NULL, 2, NULL);
	xTaskCreate(&mqtt_pub, "PUB", 1024*4, NULL, 2, NULL);
#endif


}