software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied.
*/
-#include "coap_server.h"
#include <string.h>
+#include <sys/socket.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_event_loop.h"
#include "nvs_flash.h"
-#include <sys/socket.h>
-#include "coap_config.h"
-#include "resource.h"
#include "coap.h"
+/* The examples use simple WiFi configuration that you can set via
+ 'make menuconfig'.
+
+ If you'd rather not, just change the below entries to strings with
+ the config you want - ie #define EXAMPLE_WIFI_SSID "mywifissid"
+*/
+#define EXAMPLE_WIFI_SSID CONFIG_WIFI_SSID
+#define EXAMPLE_WIFI_PASS CONFIG_WIFI_PASSWORD
+
+#define COAP_DEFAULT_TIME_SEC 5
+#define COAP_DEFAULT_TIME_USEC 0
static EventGroupHandle_t wifi_event_group;
to the AP with an IP? */
const static int CONNECTED_BIT = BIT0;
-const static char *TAG = "CoAP_demo";
+const static char *TAG = "CoAP_server";
static coap_async_state_t *async = NULL;
static void
send_async_response(coap_context_t *ctx, const coap_endpoint_t *local_if)
{
- coap_pdu_t *response;
- unsigned char buf[3];
- const char* response_data = "Hello World!";
- size_t size = sizeof(coap_hdr_t) + 20;
- response = coap_pdu_init(async->flags & COAP_MESSAGE_CON, COAP_RESPONSE_CODE(205), 0, size);
- response->hdr->id = coap_new_message_id(ctx);
- if (async->tokenlen)
- coap_add_token(response, async->tokenlen, async->token);
- coap_add_option(response, COAP_OPTION_CONTENT_TYPE, coap_encode_var_bytes(buf, COAP_MEDIATYPE_TEXT_PLAIN), buf);
- coap_add_data (response, strlen(response_data), (unsigned char *)response_data);
-
- if (coap_send(ctx, local_if, &async->peer, response) == COAP_INVALID_TID) {
-
- }
- coap_delete_pdu(response);
- coap_async_state_t *tmp;
- coap_remove_async(ctx, async->id, &tmp);
- coap_free_async(async);
- async = NULL;
+ coap_pdu_t *response;
+ unsigned char buf[3];
+ const char* response_data = "Hello World!";
+ size_t size = sizeof(coap_hdr_t) + 20;
+ response = coap_pdu_init(async->flags & COAP_MESSAGE_CON, COAP_RESPONSE_CODE(205), 0, size);
+ response->hdr->id = coap_new_message_id(ctx);
+ if (async->tokenlen)
+ coap_add_token(response, async->tokenlen, async->token);
+ coap_add_option(response, COAP_OPTION_CONTENT_TYPE, coap_encode_var_bytes(buf, COAP_MEDIATYPE_TEXT_PLAIN), buf);
+ coap_add_data (response, strlen(response_data), (unsigned char *)response_data);
+
+ if (coap_send(ctx, local_if, &async->peer, response) == COAP_INVALID_TID) {
+
+ }
+ coap_delete_pdu(response);
+ coap_async_state_t *tmp;
+ coap_remove_async(ctx, async->id, &tmp);
+ coap_free_async(async);
+ async = NULL;
}
/*
const coap_endpoint_t *local_interface, coap_address_t *peer,
coap_pdu_t *request, str *token, coap_pdu_t *response)
{
- async = coap_register_async(ctx, peer, request, COAP_ASYNC_SEPARATE | COAP_ASYNC_CONFIRM, (void*)"no data");
+ async = coap_register_async(ctx, peer, request, COAP_ASYNC_SEPARATE | COAP_ASYNC_CONFIRM, (void*)"no data");
}
static void coap_demo_thread(void *p)
{
- coap_context_t* ctx = NULL;
- coap_address_t serv_addr;
- coap_resource_t* resource = NULL;
- fd_set readfds;
- struct timeval tv;
- int flags = 0;
- /* Prepare the CoAP server socket */
- coap_address_init(&serv_addr);
- serv_addr.addr.sin.sin_family = AF_INET;
- serv_addr.addr.sin.sin_addr.s_addr = INADDR_ANY;
- serv_addr.addr.sin.sin_port = htons(COAP_DEFAULT_PORT);
- ctx = coap_new_context(&serv_addr);
- if (ctx) {
- flags = fcntl(ctx->sockfd, F_GETFL, 0);
- fcntl(ctx->sockfd, F_SETFL, flags|O_NONBLOCK);
-
- tv.tv_usec = COAP_DEFAULT_TIME_USEC;
- tv.tv_sec = COAP_DEFAULT_TIME_SEC;
- /* Initialize the resource */
- resource = coap_resource_init((unsigned char *)"Espressif", 9, 0);
- if (resource){
- coap_register_handler(resource, COAP_REQUEST_GET, async_handler);
- coap_add_resource(ctx, resource);
- /*For incoming connections*/
- for (;;) {
- FD_ZERO(&readfds);
- FD_CLR( ctx->sockfd, &readfds);
- FD_SET( ctx->sockfd, &readfds);
-
- int result = select( FD_SETSIZE, &readfds, 0, 0, &tv );
- if (result > 0){
- if (FD_ISSET( ctx->sockfd, &readfds ))
- coap_read(ctx);
- } else if (result < 0){
- break;
- } else {
- printf("select timeout\n");
- }
-
- if (async)
- send_async_response(ctx, ctx->endpoint);
- }
- }
-
- coap_free_context(ctx);
- }
-
- vTaskDelete(NULL);
-}
-
-static void coap_server_init(void)
-{
- int ret = pdPASS;
- xTaskHandle coap_handle = NULL;
-
- ret = xTaskCreate(coap_demo_thread,
- COAP_DEMO_THREAD_NAME,
- COAP_DEMO_THREAD_STACK_WORDS,
- NULL,
- COAP_DEMO_THREAD_PRORIOTY,
- &coap_handle);
-
- if (ret != pdPASS) {
- ESP_LOGI(TAG, "create thread %s failed", COAP_DEMO_THREAD_NAME);
+ coap_context_t* ctx = NULL;
+ coap_address_t serv_addr;
+ coap_resource_t* resource = NULL;
+ fd_set readfds;
+ struct timeval tv;
+ int flags = 0;
+
+ while (1) {
+ /* Wait for the callback to set the CONNECTED_BIT in the
+ event group.
+ */
+ xEventGroupWaitBits(wifi_event_group, CONNECTED_BIT,
+ false, true, portMAX_DELAY);
+ ESP_LOGI(TAG, "Connected to AP");
+
+ /* Prepare the CoAP server socket */
+ coap_address_init(&serv_addr);
+ serv_addr.addr.sin.sin_family = AF_INET;
+ serv_addr.addr.sin.sin_addr.s_addr = INADDR_ANY;
+ serv_addr.addr.sin.sin_port = htons(COAP_DEFAULT_PORT);
+ ctx = coap_new_context(&serv_addr);
+ if (ctx) {
+ flags = fcntl(ctx->sockfd, F_GETFL, 0);
+ fcntl(ctx->sockfd, F_SETFL, flags|O_NONBLOCK);
+
+ tv.tv_usec = COAP_DEFAULT_TIME_USEC;
+ tv.tv_sec = COAP_DEFAULT_TIME_SEC;
+ /* Initialize the resource */
+ resource = coap_resource_init((unsigned char *)"Espressif", 9, 0);
+ if (resource){
+ coap_register_handler(resource, COAP_REQUEST_GET, async_handler);
+ coap_add_resource(ctx, resource);
+ /*For incoming connections*/
+ for (;;) {
+ FD_ZERO(&readfds);
+ FD_CLR( ctx->sockfd, &readfds);
+ FD_SET( ctx->sockfd, &readfds);
+
+ int result = select( FD_SETSIZE, &readfds, 0, 0, &tv );
+ if (result > 0){
+ if (FD_ISSET( ctx->sockfd, &readfds ))
+ coap_read(ctx);
+ } else if (result < 0){
+ break;
+ } else {
+ ESP_LOGE(TAG, "select timeout");
+ }
+
+ if (async) {
+ send_async_response(ctx, ctx->endpoint);
+ }
+ }
+ }
+
+ coap_free_context(ctx);
+ }
}
+
+ vTaskDelete(NULL);
}
static esp_err_t wifi_event_handler(void *ctx, system_event_t *event)
break;
case SYSTEM_EVENT_STA_GOT_IP:
xEventGroupSetBits(wifi_event_group, CONNECTED_BIT);
- coap_server_init();
break;
case SYSTEM_EVENT_STA_DISCONNECTED:
/* This is a workaround as ESP32 WiFi libs don't currently
};
ESP_ERROR_CHECK( esp_wifi_set_mode(WIFI_MODE_STA) );
ESP_ERROR_CHECK( esp_wifi_set_config(WIFI_IF_STA, &wifi_config) );
-
ESP_ERROR_CHECK( esp_wifi_start() );
}
{
nvs_flash_init();
wifi_conn_init();
+
+ xTaskCreate(coap_demo_thread, "coap", 2048, NULL, 5, NULL);
}
projects / esp-idf / commitdiff