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Refactor http server to separate component

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This commit is contained in:
Christian Loch 2020-04-21 02:58:18 +02:00
parent 286dac60ff
commit 9b6f3b832a
8 changed files with 318 additions and 259 deletions
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3
components/server/CMakeLists.txt Normal file
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@ -0,0 +1,3 @@
idf_component_register(SRCS "server.c"
INCLUDE_DIRS "."
REQUIRES esp_http_server freertos)

147
components/server/server.c Normal file
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@ -0,0 +1,147 @@
/*
* server.c
*
* Created on: 21 Apr 2020
* Author: Chris
*/
#include "server.h"
static const char *TAG = "server";
char cur_value_str[255] = "No measurements yet!";
void server_set_values(int32_t temp_raw, uint32_t pressure_raw, uint32_t humidity_raw,
int32_t temp2_raw, uint32_t pressure2_raw, uint32_t humidity2_raw)
{
sprintf(cur_value_str, "<html><body><p>%d %d %d</p><p>%d %d %d</p></body></html>", temp_raw, pressure_raw, humidity_raw, temp2_raw, pressure2_raw, humidity2_raw);
}
static esp_err_t get_handler(httpd_req_t *req)
{
char* buf;
size_t buf_len;
/* Get header value string length and allocate memory for length + 1,
* extra byte for null termination */
buf_len = httpd_req_get_hdr_value_len(req, "Host") + 1;
if (buf_len > 1) {
buf = malloc(buf_len);
/* Copy null terminated value string into buffer */
if (httpd_req_get_hdr_value_str(req, "Host", buf, buf_len) == ESP_OK) {
ESP_LOGI(TAG, "Found header => Host: %s", buf);
}
free(buf);
}
// buf_len = httpd_req_get_hdr_value_len(req, "Test-Header-2") + 1;
// if (buf_len > 1) {
// buf = malloc(buf_len);
// if (httpd_req_get_hdr_value_str(req, "Test-Header-2", buf, buf_len) == ESP_OK) {
// ESP_LOGI(TAG, "Found header => Test-Header-2: %s", buf);
// }
// free(buf);
// }
//
// buf_len = httpd_req_get_hdr_value_len(req, "Test-Header-1") + 1;
// if (buf_len > 1) {
// buf = malloc(buf_len);
// if (httpd_req_get_hdr_value_str(req, "Test-Header-1", buf, buf_len) == ESP_OK) {
// ESP_LOGI(TAG, "Found header => Test-Header-1: %s", buf);
// }
// free(buf);
// }
// /* Read URL query string length and allocate memory for length + 1,
// * extra byte for null termination */
// buf_len = httpd_req_get_url_query_len(req) + 1;
// if (buf_len > 1) {
// buf = malloc(buf_len);
// if (httpd_req_get_url_query_str(req, buf, buf_len) == ESP_OK) {
// ESP_LOGI(TAG, "Found URL query => %s", buf);
// char param[32];
// /* Get value of expected key from query string */
// if (httpd_query_key_value(buf, "query1", param, sizeof(param)) == ESP_OK) {
// ESP_LOGI(TAG, "Found URL query parameter => query1=%s", param);
// }
// if (httpd_query_key_value(buf, "query3", param, sizeof(param)) == ESP_OK) {
// ESP_LOGI(TAG, "Found URL query parameter => query3=%s", param);
// }
// if (httpd_query_key_value(buf, "query2", param, sizeof(param)) == ESP_OK) {
// ESP_LOGI(TAG, "Found URL query parameter => query2=%s", param);
// }
// }
// free(buf);
// }
/* Set some custom headers */
// httpd_resp_set_hdr(req, "Custom-Header-1", "Custom-Value-1");
// httpd_resp_set_hdr(req, "Custom-Header-2", "Custom-Value-2");
/* Send response with custom headers and body set as the
* string passed in user context*/
const char* resp_str = cur_value_str;
httpd_resp_send(req, resp_str, strlen(resp_str));
/* After sending the HTTP response the old HTTP request
* headers are lost. Check if HTTP request headers can be read now. */
// if (httpd_req_get_hdr_value_len(req, "Host") == 0) {
// ESP_LOGI(TAG, "Request headers lost");
// }
return ESP_OK;
}
static httpd_uri_t uri = {
.uri = "/",
.method = HTTP_GET,
.handler = get_handler,
};
static httpd_handle_t start_webserver(void)
{
httpd_handle_t server = NULL;
httpd_config_t config = HTTPD_DEFAULT_CONFIG();
// Start the httpd server
ESP_LOGI(TAG, "Starting server on port: '%d'", config.server_port);
if (httpd_start(&server, &config) == ESP_OK) {
// Set URI handlers
ESP_LOGI(TAG, "Registering URI handlers");
httpd_register_uri_handler(server, &uri);
return server;
}
ESP_LOGI(TAG, "Error starting server!");
return NULL;
}
static void stop_webserver(httpd_handle_t server)
{
// Stop the httpd server
httpd_stop(server);
}
static void connect_handler(void* arg, esp_event_base_t event_base,
int32_t event_id, void* event_data)
{
httpd_handle_t* server = (httpd_handle_t*) arg;
if (*server == NULL) {
ESP_LOGI(TAG, "Starting webserver");
*server = start_webserver();
}
}
static void disconnect_handler(void* arg, esp_event_base_t event_base,
int32_t event_id, void* event_data)
{
httpd_handle_t* server = (httpd_handle_t*) arg;
if (*server) {
ESP_LOGI(TAG, "Stopping webserver");
stop_webserver(*server);
*server = NULL;
}
}
void init_server()
{
start_webserver();
}

23
components/server/server.h Normal file
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@ -0,0 +1,23 @@
/*
* server.h
*
* Created on: 21 Apr 2020
* Author: Chris
*/
#ifndef COMPONENTS_SERVER_SERVER_H_
#define COMPONENTS_SERVER_SERVER_H_
#include <freertos/FreeRTOS.h>
#include <freertos/event_groups.h>
#include <freertos/task.h>
#include <esp_event.h>
#include <esp_log.h>
#include <esp_http_server.h>
#include <sys/param.h>
void init_server();
void server_set_values(int32_t temp_raw, uint32_t pressure_raw, uint32_t humidity_raw,
int32_t temp2_raw, uint32_t pressure2_raw, uint32_t humidity2_raw);
#endif /* COMPONENTS_SERVER_SERVER_H_ */

3
components/wifi/CMakeLists.txt Normal file
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@ -0,0 +1,3 @@
idf_component_register(SRCS "wifi.c"
INCLUDE_DIRS "."
REQUIRES nvs_flash)

6
main/Kconfig.projbuild → components/wifi/Kconfig
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@ -1,5 +1,5 @@
# put here your custom config value
menu "Example Configuration"
menu "WIFI AP Configuration"
config ESP_WIFI_SSID
string "WiFi SSID"
default "myssid"
@ -11,4 +11,8 @@ config ESP_WIFI_PASSWORD
default "mypassword"
help
WiFi password (WPA or WPA2) for the example to use.
config ESP_WIFI_RETRIES
int "WiFi connection retries"
default 5
endmenu

111
components/wifi/wifi.c Normal file
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@ -0,0 +1,111 @@
/*
* wifi.c
*
* Created on: 21 Apr 2020
* Author: Chris
*/
#include "wifi.h"
#define WIFI_CONNECTED_BIT BIT0
#define WIFI_FAIL_BIT BIT1
static EventGroupHandle_t s_wifi_event_group;
static const char *TAG = "wifi station";
static int s_retry_num = 0;
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_WIFI_RETRIES) {
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:%s",
ip4addr_ntoa(&event->ip_info.ip));
s_retry_num = 0;
xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
}
}
void wifi_init_sta()
{
//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);
s_wifi_event_group = xEventGroupCreate();
tcpip_adapter_init();
ESP_ERROR_CHECK(esp_event_loop_create_default());
wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
ESP_ERROR_CHECK(esp_wifi_init(&cfg));
//tcpip_adapter_dhcpc_stop(TCPIP_ADAPTER_IF_STA);
//tcpip_adapter_ip_info_t info;
//ip4_addr_t gw;
//gw.addr = ipaddr_addr("192.168.0.1");
//info.gw = gw;
//ip4_addr_t ip;
//ip.addr = ipaddr_addr("192.168.0.110");
//info.ip = ip;
//ip4_addr_t netmask;
//netmask.addr = ipaddr_addr("255.255.255.0");
//info.netmask = netmask;
//tcpip_adapter_sta_start(0, &info);
ESP_ERROR_CHECK(esp_event_handler_register(WIFI_EVENT, ESP_EVENT_ANY_ID, &event_handler, NULL));
ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler, NULL));
wifi_config_t wifi_config = {
.sta = {
.ssid = CONFIG_ESP_WIFI_SSID,
.password = CONFIG_ESP_WIFI_PASSWORD
},
};
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);
//tcpip_adapter_set_ip_info(TCPIP_ADAPTER_IF_STA, &info);
/* 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",
CONFIG_ESP_WIFI_SSID);
} else if (bits & WIFI_FAIL_BIT) {
ESP_LOGI(TAG, "Failed to connect to SSID:%s",
CONFIG_ESP_WIFI_SSID);
} else {
ESP_LOGE(TAG, "UNEXPECTED EVENT");
}
//ESP_ERROR_CHECK(esp_event_handler_unregister(IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler));
//ESP_ERROR_CHECK(esp_event_handler_unregister(WIFI_EVENT, ESP_EVENT_ANY_ID, &event_handler));
//vEventGroupDelete(s_wifi_event_group);
}

20
components/wifi/wifi.h Normal file
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@ -0,0 +1,20 @@
/*
* wifi.h
*
* Created on: 21 Apr 2020
* Author: Chris
*/
#ifndef COMPONENTS_WIFI_WIFI_H_
#define COMPONENTS_WIFI_WIFI_H_
#include <esp_wifi.h>
#include <esp_log.h>
#include <freertos/FreeRTOS.h>
#include "freertos/event_groups.h"
#include <freertos/task.h>
#include "nvs_flash.h"
void wifi_init_sta();
#endif /* COMPONENTS_WIFI_WIFI_H_ */

264
main/main.c
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@ -1,245 +1,9 @@
#include "display.h"
#include "sensors.h"
#include "wifi.h"
#include "server.h"
#include <esp_log.h>
#include <freertos/FreeRTOS.h>
#include <freertos/task.h>
//#include <esp_wifi.h>
//#include "freertos/event_groups.h"
//#include "nvs_flash.h"
//#include <esp_http_server.h>
//#include <sys/param.h>
//#define WIFI_SSID "Netzknecht"
//#define WIFI_PASS "***REMOVED***"
//#define WIFI_RETRIES 10
//
//static EventGroupHandle_t s_wifi_event_group;
//#define WIFI_CONNECTED_BIT BIT0
//#define WIFI_FAIL_BIT BIT1
//
//static const char *TAG = "wifi station";
//static int s_retry_num = 0;
//
//char cur_value_str[255];
//
///* An HTTP GET handler */
//static esp_err_t hello_get_handler(httpd_req_t *req)
//{
// char* buf;
// size_t buf_len;
//
// /* Get header value string length and allocate memory for length + 1,
// * extra byte for null termination */
// buf_len = httpd_req_get_hdr_value_len(req, "Host") + 1;
// if (buf_len > 1) {
// buf = malloc(buf_len);
// /* Copy null terminated value string into buffer */
// if (httpd_req_get_hdr_value_str(req, "Host", buf, buf_len) == ESP_OK) {
// ESP_LOGI(TAG, "Found header => Host: %s", buf);
// }
// free(buf);
// }
//
// buf_len = httpd_req_get_hdr_value_len(req, "Test-Header-2") + 1;
// if (buf_len > 1) {
// buf = malloc(buf_len);
// if (httpd_req_get_hdr_value_str(req, "Test-Header-2", buf, buf_len) == ESP_OK) {
// ESP_LOGI(TAG, "Found header => Test-Header-2: %s", buf);
// }
// free(buf);
// }
//
// buf_len = httpd_req_get_hdr_value_len(req, "Test-Header-1") + 1;
// if (buf_len > 1) {
// buf = malloc(buf_len);
// if (httpd_req_get_hdr_value_str(req, "Test-Header-1", buf, buf_len) == ESP_OK) {
// ESP_LOGI(TAG, "Found header => Test-Header-1: %s", buf);
// }
// free(buf);
// }
//
// /* Read URL query string length and allocate memory for length + 1,
// * extra byte for null termination */
// buf_len = httpd_req_get_url_query_len(req) + 1;
// if (buf_len > 1) {
// buf = malloc(buf_len);
// if (httpd_req_get_url_query_str(req, buf, buf_len) == ESP_OK) {
// ESP_LOGI(TAG, "Found URL query => %s", buf);
// char param[32];
// /* Get value of expected key from query string */
// if (httpd_query_key_value(buf, "query1", param, sizeof(param)) == ESP_OK) {
// ESP_LOGI(TAG, "Found URL query parameter => query1=%s", param);
// }
// if (httpd_query_key_value(buf, "query3", param, sizeof(param)) == ESP_OK) {
// ESP_LOGI(TAG, "Found URL query parameter => query3=%s", param);
// }
// if (httpd_query_key_value(buf, "query2", param, sizeof(param)) == ESP_OK) {
// ESP_LOGI(TAG, "Found URL query parameter => query2=%s", param);
// }
// }
// free(buf);
// }
//
// /* Set some custom headers */
// httpd_resp_set_hdr(req, "Custom-Header-1", "Custom-Value-1");
// httpd_resp_set_hdr(req, "Custom-Header-2", "Custom-Value-2");
//
// /* Send response with custom headers and body set as the
// * string passed in user context*/
// const char* resp_str = cur_value_str;
// httpd_resp_send(req, resp_str, strlen(resp_str));
//
// /* After sending the HTTP response the old HTTP request
// * headers are lost. Check if HTTP request headers can be read now. */
// if (httpd_req_get_hdr_value_len(req, "Host") == 0) {
// ESP_LOGI(TAG, "Request headers lost");
// }
// return ESP_OK;
//}
//
//static httpd_uri_t hello = {
// .uri = "/hello",
// .method = HTTP_GET,
// .handler = hello_get_handler,
// /* Let's pass response string in user
// * context to demonstrate it's usage */
// .user_ctx = "Hello World!"
//};
//
//static httpd_handle_t start_webserver(void)
//{
// httpd_handle_t server = NULL;
// httpd_config_t config = HTTPD_DEFAULT_CONFIG();
//
// // Start the httpd server
// ESP_LOGI(TAG, "Starting server on port: '%d'", config.server_port);
// if (httpd_start(&server, &config) == ESP_OK) {
// // Set URI handlers
// ESP_LOGI(TAG, "Registering URI handlers");
// httpd_register_uri_handler(server, &hello);
// return server;
// }
//
// ESP_LOGI(TAG, "Error starting server!");
// return NULL;
//}
//
//static void stop_webserver(httpd_handle_t server)
//{
// // Stop the httpd server
// httpd_stop(server);
//}
//
//static void disconnect_handler(void* arg, esp_event_base_t event_base,
// int32_t event_id, void* event_data)
//{
// httpd_handle_t* server = (httpd_handle_t*) arg;
// if (*server) {
// ESP_LOGI(TAG, "Stopping webserver");
// stop_webserver(*server);
// *server = NULL;
// }
//}
//
//static void connect_handler(void* arg, esp_event_base_t event_base,
// int32_t event_id, void* event_data)
//{
// httpd_handle_t* server = (httpd_handle_t*) arg;
// if (*server == NULL) {
// ESP_LOGI(TAG, "Starting webserver");
// *server = start_webserver();
// }
//}
//
//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 < WIFI_RETRIES) {
// 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:%s",
// ip4addr_ntoa(&event->ip_info.ip));
// s_retry_num = 0;
// xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
// }
//}
//void wifi_init_sta()
//{
// s_wifi_event_group = xEventGroupCreate();
//
// tcpip_adapter_init();
//
// ESP_ERROR_CHECK(esp_event_loop_create_default());
//
// wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
// ESP_ERROR_CHECK(esp_wifi_init(&cfg));
//
// //tcpip_adapter_dhcpc_stop(TCPIP_ADAPTER_IF_STA);
// //tcpip_adapter_ip_info_t info;
// //ip4_addr_t gw;
// //gw.addr = ipaddr_addr("192.168.0.1");
// //info.gw = gw;
// //ip4_addr_t ip;
// //ip.addr = ipaddr_addr("192.168.0.110");
// //info.ip = ip;
// //ip4_addr_t netmask;
// //netmask.addr = ipaddr_addr("255.255.255.0");
// //info.netmask = netmask;
// //tcpip_adapter_sta_start(0, &info);
//
// ESP_ERROR_CHECK(esp_event_handler_register(WIFI_EVENT, ESP_EVENT_ANY_ID, &event_handler, NULL));
// ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler, NULL));
//
// wifi_config_t wifi_config = {
// .sta = {
// .ssid = WIFI_SSID,
// .password = WIFI_PASS
// },
// };
// 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);
//
// //tcpip_adapter_set_ip_info(TCPIP_ADAPTER_IF_STA, &info);
// /* 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",
// WIFI_SSID, WIFI_PASS);
// } else if (bits & WIFI_FAIL_BIT) {
// ESP_LOGI(TAG, "Failed to connect to SSID:%s, password:%s",
// WIFI_SSID, WIFI_PASS);
// } else {
// ESP_LOGE(TAG, "UNEXPECTED EVENT");
// }
//
// ESP_ERROR_CHECK(esp_event_handler_unregister(IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler));
// ESP_ERROR_CHECK(esp_event_handler_unregister(WIFI_EVENT, ESP_EVENT_ANY_ID, &event_handler));
// vEventGroupDelete(s_wifi_event_group);
//}
void app_main(void)
{
@ -250,31 +14,15 @@ void app_main(void)
uint32_t pressure2 = 0;
uint32_t humidity2 = 0;
// INIT WIFI
//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);
//
// ESP_LOGI(TAG, "ESP_WIFI_MODE_STA");
// wifi_init_sta();
// INIT WEBSERVER
// static httpd_handle_t server = NULL;
// ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_STA_GOT_IP, &connect_handler, &server));
// ESP_ERROR_CHECK(esp_event_handler_register(WIFI_EVENT, WIFI_EVENT_STA_DISCONNECTED, &disconnect_handler, &server));
// server = start_webserver();
init_sensors();
init_display();
read_sensor(&temp, &pressure, &humidity);
read_sensor2(&temp2, &pressure2, &humidity2);
display_data(temp, pressure, humidity, temp2, pressure2, humidity2);
wifi_init_sta();
init_server();
while (1) {
read_sensor(&temp, &pressure, &humidity);
read_sensor2(&temp2, &pressure2, &humidity2);
server_set_values(temp, pressure, humidity, temp2, pressure2, humidity2);
display_data(temp, pressure, humidity, temp2, pressure2, humidity2);
vTaskDelay(1000 / portTICK_PERIOD_MS);
}