Added simple HTTP Server
Rewrote print_data function Fixed multiple sensor usage on one I2C bus
This commit is contained in:
parent
15051a0aca
commit
f764f2fe2f
465
main/main.c
465
main/main.c
@ -4,16 +4,250 @@
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#include <u8g2.h>
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#include "u8g2_esp32_hal.h"
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#include <esp_log.h>
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#include <esp_wifi.h>
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#include "freertos/event_groups.h"
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#include "nvs_flash.h"
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#include <esp_http_server.h>
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#include <sys/param.h>
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#define WIFI_SSID "Netzknecht"
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#define WIFI_PASS "SpvtNVYsSRTsX36I"
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#define WIFI_RETRIES 10
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static EventGroupHandle_t s_wifi_event_group;
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#define WIFI_CONNECTED_BIT BIT0
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#define WIFI_FAIL_BIT BIT1
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static const char *TAG = "wifi station";
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static int s_retry_num = 0;
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char cur_value_str[255];
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/* An HTTP GET handler */
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static esp_err_t hello_get_handler(httpd_req_t *req)
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{
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char* buf;
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size_t buf_len;
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/* Get header value string length and allocate memory for length + 1,
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* extra byte for null termination */
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buf_len = httpd_req_get_hdr_value_len(req, "Host") + 1;
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if (buf_len > 1) {
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buf = malloc(buf_len);
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/* Copy null terminated value string into buffer */
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if (httpd_req_get_hdr_value_str(req, "Host", buf, buf_len) == ESP_OK) {
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ESP_LOGI(TAG, "Found header => Host: %s", buf);
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}
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free(buf);
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}
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buf_len = httpd_req_get_hdr_value_len(req, "Test-Header-2") + 1;
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if (buf_len > 1) {
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buf = malloc(buf_len);
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if (httpd_req_get_hdr_value_str(req, "Test-Header-2", buf, buf_len) == ESP_OK) {
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ESP_LOGI(TAG, "Found header => Test-Header-2: %s", buf);
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}
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free(buf);
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}
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buf_len = httpd_req_get_hdr_value_len(req, "Test-Header-1") + 1;
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if (buf_len > 1) {
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buf = malloc(buf_len);
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if (httpd_req_get_hdr_value_str(req, "Test-Header-1", buf, buf_len) == ESP_OK) {
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ESP_LOGI(TAG, "Found header => Test-Header-1: %s", buf);
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}
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free(buf);
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}
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/* Read URL query string length and allocate memory for length + 1,
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* extra byte for null termination */
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buf_len = httpd_req_get_url_query_len(req) + 1;
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if (buf_len > 1) {
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buf = malloc(buf_len);
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if (httpd_req_get_url_query_str(req, buf, buf_len) == ESP_OK) {
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ESP_LOGI(TAG, "Found URL query => %s", buf);
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char param[32];
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/* Get value of expected key from query string */
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if (httpd_query_key_value(buf, "query1", param, sizeof(param)) == ESP_OK) {
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ESP_LOGI(TAG, "Found URL query parameter => query1=%s", param);
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}
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if (httpd_query_key_value(buf, "query3", param, sizeof(param)) == ESP_OK) {
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ESP_LOGI(TAG, "Found URL query parameter => query3=%s", param);
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}
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if (httpd_query_key_value(buf, "query2", param, sizeof(param)) == ESP_OK) {
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ESP_LOGI(TAG, "Found URL query parameter => query2=%s", param);
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}
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}
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free(buf);
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}
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/* Set some custom headers */
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httpd_resp_set_hdr(req, "Custom-Header-1", "Custom-Value-1");
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httpd_resp_set_hdr(req, "Custom-Header-2", "Custom-Value-2");
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/* Send response with custom headers and body set as the
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* string passed in user context*/
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const char* resp_str = cur_value_str;
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httpd_resp_send(req, resp_str, strlen(resp_str));
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/* After sending the HTTP response the old HTTP request
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* headers are lost. Check if HTTP request headers can be read now. */
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if (httpd_req_get_hdr_value_len(req, "Host") == 0) {
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ESP_LOGI(TAG, "Request headers lost");
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}
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return ESP_OK;
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}
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static httpd_uri_t hello = {
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.uri = "/hello",
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.method = HTTP_GET,
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.handler = hello_get_handler,
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/* Let's pass response string in user
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* context to demonstrate it's usage */
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.user_ctx = "Hello World!"
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};
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static httpd_handle_t start_webserver(void)
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{
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httpd_handle_t server = NULL;
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httpd_config_t config = HTTPD_DEFAULT_CONFIG();
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// Start the httpd server
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ESP_LOGI(TAG, "Starting server on port: '%d'", config.server_port);
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if (httpd_start(&server, &config) == ESP_OK) {
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// Set URI handlers
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ESP_LOGI(TAG, "Registering URI handlers");
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httpd_register_uri_handler(server, &hello);
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return server;
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}
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ESP_LOGI(TAG, "Error starting server!");
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return NULL;
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}
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static void stop_webserver(httpd_handle_t server)
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{
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// Stop the httpd server
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httpd_stop(server);
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}
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static void disconnect_handler(void* arg, esp_event_base_t event_base,
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int32_t event_id, void* event_data)
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{
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httpd_handle_t* server = (httpd_handle_t*) arg;
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if (*server) {
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ESP_LOGI(TAG, "Stopping webserver");
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stop_webserver(*server);
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*server = NULL;
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}
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}
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static void connect_handler(void* arg, esp_event_base_t event_base,
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int32_t event_id, void* event_data)
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{
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httpd_handle_t* server = (httpd_handle_t*) arg;
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if (*server == NULL) {
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ESP_LOGI(TAG, "Starting webserver");
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*server = start_webserver();
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}
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}
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static void event_handler(void* arg, esp_event_base_t event_base,
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int32_t event_id, void* event_data)
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{
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if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START) {
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esp_wifi_connect();
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} else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_DISCONNECTED) {
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if (s_retry_num < WIFI_RETRIES) {
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esp_wifi_connect();
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s_retry_num++;
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ESP_LOGI(TAG, "retry to connect to the AP");
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} else {
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xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT);
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}
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ESP_LOGI(TAG,"connect to the AP fail");
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} else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
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ip_event_got_ip_t* event = (ip_event_got_ip_t*) event_data;
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ESP_LOGI(TAG, "got ip:%s",
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ip4addr_ntoa(&event->ip_info.ip));
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s_retry_num = 0;
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xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
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}
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}
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void wifi_init_sta()
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{
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s_wifi_event_group = xEventGroupCreate();
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tcpip_adapter_init();
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ESP_ERROR_CHECK(esp_event_loop_create_default());
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wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
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ESP_ERROR_CHECK(esp_wifi_init(&cfg));
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//tcpip_adapter_dhcpc_stop(TCPIP_ADAPTER_IF_STA);
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//tcpip_adapter_ip_info_t info;
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//ip4_addr_t gw;
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//gw.addr = ipaddr_addr("192.168.0.1");
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//info.gw = gw;
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//ip4_addr_t ip;
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//ip.addr = ipaddr_addr("192.168.0.110");
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//info.ip = ip;
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//ip4_addr_t netmask;
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//netmask.addr = ipaddr_addr("255.255.255.0");
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//info.netmask = netmask;
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//tcpip_adapter_sta_start(0, &info);
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ESP_ERROR_CHECK(esp_event_handler_register(WIFI_EVENT, ESP_EVENT_ANY_ID, &event_handler, NULL));
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ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler, NULL));
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wifi_config_t wifi_config = {
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.sta = {
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.ssid = WIFI_SSID,
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.password = WIFI_PASS
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},
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};
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ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA) );
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ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config) );
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ESP_ERROR_CHECK(esp_wifi_start() );
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ESP_LOGI(TAG, "wifi_init_sta finished.");
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/* Waiting until either the connection is established (WIFI_CONNECTED_BIT) or connection failed for the maximum
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* number of re-tries (WIFI_FAIL_BIT). The bits are set by event_handler() (see above) */
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EventBits_t bits = xEventGroupWaitBits(s_wifi_event_group,
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WIFI_CONNECTED_BIT | WIFI_FAIL_BIT,
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pdFALSE,
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pdFALSE,
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portMAX_DELAY);
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//tcpip_adapter_set_ip_info(TCPIP_ADAPTER_IF_STA, &info);
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/* xEventGroupWaitBits() returns the bits before the call returned, hence we can test which event actually
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* happened. */
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if (bits & WIFI_CONNECTED_BIT) {
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ESP_LOGI(TAG, "connected to ap SSID:%s password:%s",
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WIFI_SSID, WIFI_PASS);
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} else if (bits & WIFI_FAIL_BIT) {
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ESP_LOGI(TAG, "Failed to connect to SSID:%s, password:%s",
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WIFI_SSID, WIFI_PASS);
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} else {
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ESP_LOGE(TAG, "UNEXPECTED EVENT");
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}
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ESP_ERROR_CHECK(esp_event_handler_unregister(IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler));
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ESP_ERROR_CHECK(esp_event_handler_unregister(WIFI_EVENT, ESP_EVENT_ANY_ID, &event_handler));
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vEventGroupDelete(s_wifi_event_group);
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}
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void i2c_setup()
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{
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printf("Setting up I²C driver... ");
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//i2c_driver_install(0, I2C_MODE_MASTER, 0, 0, 0);
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printf("Setting up I²C driver on port 1... ");
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i2c_config_t config;
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config.mode = I2C_MODE_MASTER;
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config.sda_io_num = 18;
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config.sda_io_num = 33;
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config.sda_pullup_en = GPIO_PULLUP_ENABLE;
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config.scl_io_num = 19;
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config.scl_io_num = 32;
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config.scl_pullup_en = GPIO_PULLUP_ENABLE;
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config.master.clk_speed = 100000;
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i2c_param_config(I2C_NUM_0, &config);
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@ -27,34 +261,6 @@ void i2c_setup()
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printf("Driver install failed!\n");
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}
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void i2c_detect()
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{
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printf("Scanning I²C bus:\n");
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uint8_t address;
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printf(" 0 1 2 3 4 5 6 7 8 9 a b c d e f\r\n");
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for (int i = 0; i < 128; i += 16) {
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printf("%02x: ", i);
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for (int j = 0; j < 16; j++) {
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fflush(stdout);
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address = i + j;
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i2c_cmd_handle_t cmd = i2c_cmd_link_create();
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i2c_master_start(cmd);
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i2c_master_write_byte(cmd, (address << 1) | I2C_MASTER_WRITE, 0x1);
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i2c_master_stop(cmd);
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esp_err_t ret = i2c_master_cmd_begin(I2C_NUM_0, cmd, 50 / portTICK_RATE_MS);
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i2c_cmd_link_delete(cmd);
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if (ret == ESP_OK) {
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printf("%02x ", address);
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} else if (ret == ESP_ERR_TIMEOUT) {
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printf("UU ");
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} else {
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printf("-- ");
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}
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}
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printf("\r\n");
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}
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}
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int8_t i2c_read(uint8_t dev_id, uint8_t reg_addr, uint8_t *data, uint16_t len) {
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i2c_cmd_handle_t cmd = i2c_cmd_link_create();
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i2c_master_start(cmd);
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@ -105,18 +311,15 @@ void read_sensor(struct bme280_dev* dev, int32_t* temp, uint32_t* pressure, uint
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uint32_t req_delay;
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struct bme280_data comp_data;
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/* Recommended mode of operation: Indoor navigation */
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dev->settings.osr_h = BME280_OVERSAMPLING_1X;
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dev->settings.osr_h = BME280_OVERSAMPLING_16X;
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dev->settings.osr_p = BME280_OVERSAMPLING_16X;
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dev->settings.osr_t = BME280_OVERSAMPLING_16X;
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dev->settings.filter = BME280_FILTER_COEFF_16;
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settings_sel = BME280_OSR_PRESS_SEL | BME280_OSR_TEMP_SEL | BME280_OSR_HUM_SEL | BME280_FILTER_SEL;
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bme280_set_sensor_settings(settings_sel, dev);
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/*Calculate the minimum delay required between consecutive measurement based upon the sensor enabled
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* and the oversampling configuration. */
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req_delay = 12*bme280_cal_meas_delay(&(dev->settings));
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printf("req_delay=%i\r\n", req_delay);
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/* Continuously stream sensor data */
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bme280_set_sensor_mode(BME280_FORCED_MODE, dev);
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@ -128,59 +331,117 @@ void read_sensor(struct bme280_dev* dev, int32_t* temp, uint32_t* pressure, uint
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*humidity = comp_data.humidity;
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}
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void print_data(u8g2_t* u8g2, int32_t temp, uint32_t pressure, uint32_t humidity) {
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int32_t temp1 = temp / 100;
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int32_t temp2 = (abs(temp) % 100) / 10;
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uint32_t press1 = pressure / 100;
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uint32_t humid1 = humidity / 1024;
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uint32_t humid2 = (humidity - humid1*1024) * 10 / 1024;
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//temp1 = 12;
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//temp2 = 3;
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int32_t temp3 = -1*temp1;
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int32_t temp4 = temp2;
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//press1 = 9999;
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//humid1 = 13;
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//humid2 = 4;
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char temp1str[31];
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char temp1str2[32];
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sprintf(temp1str, "%d,%d", temp1, temp2);
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if (temp1 < 10) {
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sprintf(temp1str2, " %s", temp1str);
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} else {
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sprintf(temp1str2, "%s", temp1str);
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}
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char temp2str[31];
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char temp2str2[33];
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sprintf(temp2str, "%d,%d", temp3, temp4);
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uint8_t spaces = 0;
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if (temp3 > 0)
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spaces++;
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if (abs(temp3) < 10)
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spaces++;
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if (spaces == 2)
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sprintf(temp2str2, " %s", temp2str);
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else if (spaces == 1)
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sprintf(temp2str2, " %s", temp2str);
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else {
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sprintf(temp2str2, "%s", temp2str);
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}
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char tempstr[70];
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sprintf(tempstr, "%s %s °C", temp1str2, temp2str2);
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void read_sensor2(struct bme280_dev* dev, int32_t* temp, uint32_t* pressure, uint32_t* humidity) {
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uint8_t settings_sel;
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uint32_t req_delay;
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struct bme280_data comp_data;
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dev->settings.osr_h = BME280_OVERSAMPLING_16X;
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dev->settings.osr_p = BME280_OVERSAMPLING_16X;
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dev->settings.osr_t = BME280_OVERSAMPLING_16X;
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dev->settings.filter = BME280_FILTER_COEFF_16;
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settings_sel = BME280_OSR_PRESS_SEL | BME280_OSR_TEMP_SEL | BME280_OSR_HUM_SEL | BME280_FILTER_SEL;
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bme280_set_sensor_settings(settings_sel, dev);
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/*Calculate the minimum delay required between consecutive measurement based upon the sensor enabled
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* and the oversampling configuration. */
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req_delay = 12*bme280_cal_meas_delay(&(dev->settings));
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bme280_set_sensor_mode(BME280_FORCED_MODE, dev);
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/* Wait for the measurement to complete and print data @25Hz */
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dev->delay_ms(req_delay / portTICK_PERIOD_MS);
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bme280_get_sensor_data(BME280_ALL, &comp_data, dev);
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*temp = comp_data.temperature;
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*pressure = comp_data.pressure;
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*humidity = comp_data.humidity;
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}
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void print_data(u8g2_t* u8g2, int32_t temp_raw, uint32_t pressure_raw, uint32_t humidity_raw,
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int32_t temp2_raw, uint32_t pressure2_raw, uint32_t humidity2_raw) {
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// Calc temperature pre and post comma values
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int32_t temp_pre = temp_raw / 100;
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int32_t temp_post = (abs(temp_raw) % 100) / 10;
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int32_t temp2_pre = temp2_raw / 100;
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int32_t temp2_post = (abs(temp2_raw) % 100) / 10;
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// Calc pressure values
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uint32_t press = pressure_raw / 100;
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uint32_t press2 = pressure2_raw / 100;
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// Calc humidity pre and post comma values
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uint32_t humid_pre = humidity_raw / 1024;
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uint32_t humid_post = (humidity_raw - humid_pre*1024) * 10 / 1024;
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uint32_t humid2_pre = humidity2_raw / 1024;
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uint32_t humid2_post = (humidity2_raw - humid2_pre*1024) * 10 / 1024;
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// Format temperatures
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char temp_str[2*(sizeof(int)*8+1)+5] = ""; // ""
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char temp_pre_str[sizeof(int)*8+1];
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itoa(temp_pre, temp_pre_str, 10);
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char temp_post_str[sizeof(int)*8+1];
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itoa(temp_post, temp_post_str, 10);
|
||||
char temp2_pre_str[sizeof(int)*8+1];
|
||||
itoa(temp2_pre, temp2_pre_str, 10);
|
||||
char temp2_post_str[sizeof(int)*8+1];
|
||||
itoa(temp2_post, temp2_post_str, 10);
|
||||
if (temp_pre < 10)
|
||||
strcat(temp_str, " "); // Add space if first temperatur is just one digit long " "
|
||||
strcat(temp_str, temp_pre_str); // " 1"
|
||||
strcat(temp_str, ","); // " 1,"
|
||||
strcat(temp_str, temp_post_str); // " 1,3"
|
||||
strcat(temp_str, " "); // " 1,3 "
|
||||
if (temp2_pre >= 0)
|
||||
strcat(temp_str, " "); // Add space if there is no minus sign " 1,3 "
|
||||
if (temp2_pre < 10)
|
||||
strcat(temp_str, " "); // Add space if second temperatur is just one digit long " 1,3 "
|
||||
strcat(temp_str, temp2_pre_str); // " 1,3 7"
|
||||
strcat(temp_str, ","); // " 1,3 7,"
|
||||
strcat(temp_str, temp2_post_str); // " 1,3 7,2"
|
||||
strcat(temp_str, " °C"); // " 1,3 7,2 °C"
|
||||
|
||||
// Format temperatures
|
||||
char humid_str[2*(sizeof(int)*8+1)+5] = ""; // ""
|
||||
char humid_pre_str[sizeof(int)*8+1];
|
||||
itoa(humid_pre, humid_pre_str, 10);
|
||||
char humid_post_str[sizeof(int)*8+1];
|
||||
itoa(humid_post, humid_post_str, 10);
|
||||
char humid2_pre_str[sizeof(int)*8+1];
|
||||
itoa(humid2_pre, humid2_pre_str, 10);
|
||||
char humid2_post_str[sizeof(int)*8+1];
|
||||
itoa(humid2_post, humid2_post_str, 10);
|
||||
strcat(humid_str, humid_pre_str); // "12"
|
||||
strcat(humid_str, ","); // "12,"
|
||||
strcat(humid_str, humid_post_str); // "12,5"
|
||||
strcat(humid_str, " "); // "12,5 "
|
||||
strcat(humid_str, humid2_pre_str); // "12,5 45"
|
||||
strcat(humid_str, ","); // "12,5 45,"
|
||||
strcat(humid_str, humid2_post_str); // "12,5 45,23"
|
||||
strcat(humid_str, " %"); // "12,5 45,23 %"
|
||||
|
||||
// Format pressure
|
||||
char pressure_str[2*(sizeof(int)*8+1)+5] = ""; // ""
|
||||
char press1_str[sizeof(int)*8+1];
|
||||
itoa(press, press1_str, 10);
|
||||
char press2_str[sizeof(int)*8+1];
|
||||
itoa(press2, press2_str, 10);
|
||||
if (press < 1000)
|
||||
strcat(pressure_str, " ");
|
||||
strcat(pressure_str, press1_str);
|
||||
strcat(pressure_str, " ");
|
||||
if (press2 < 1000)
|
||||
strcat(pressure_str, " ");
|
||||
strcat(pressure_str, press2_str);
|
||||
strcat(pressure_str, " hPa");
|
||||
|
||||
u8g2_ClearBuffer(u8g2);
|
||||
|
||||
char pressstr[27];
|
||||
char humidstr[27];
|
||||
|
||||
sprintf(pressstr, "%d %d hPa", press1, press1);
|
||||
sprintf(humidstr, "%d,%d %d,%d %%", humid1, humid2, humid1, humid2);
|
||||
|
||||
u8g2_SetFont(u8g2, u8g2_font_profont17_mf);
|
||||
int8_t fontheight = u8g2_GetAscent(u8g2);
|
||||
int8_t fontmargin = abs(u8g2_GetDescent(u8g2))+2;
|
||||
u8g2_DrawStr(u8g2, 0, fontheight, " IN OUT ");
|
||||
u8g2_DrawStr(u8g2, 0, 2*fontheight + fontmargin, tempstr);
|
||||
u8g2_DrawStr(u8g2, 0, 3*fontheight + 2*fontmargin, humidstr);
|
||||
u8g2_DrawStr(u8g2, 0, 4*fontheight + 3*fontmargin, pressstr);
|
||||
u8g2_DrawStr(u8g2, 0, 2*fontheight + fontmargin, temp_str);
|
||||
u8g2_DrawStr(u8g2, 0, 3*fontheight + 2*fontmargin, humid_str);
|
||||
u8g2_DrawStr(u8g2, 0, 4*fontheight + 3*fontmargin, pressure_str);
|
||||
u8g2_SendBuffer(u8g2);
|
||||
}
|
||||
|
||||
@ -189,6 +450,9 @@ void app_main(void)
|
||||
int32_t temp = 0;
|
||||
uint32_t pressure = 0;
|
||||
uint32_t humidity = 0;
|
||||
int32_t temp2 = 0;
|
||||
uint32_t pressure2 = 0;
|
||||
uint32_t humidity2 = 0;
|
||||
|
||||
// INIT SENSOR
|
||||
i2c_setup();
|
||||
@ -200,6 +464,15 @@ void app_main(void)
|
||||
dev.delay_ms = i2c_delay;
|
||||
bme280_init(&dev);
|
||||
|
||||
// INIT SENSOR2
|
||||
struct bme280_dev dev2;
|
||||
dev2.dev_id = 0x77;
|
||||
dev2.intf = BME280_I2C_INTF;
|
||||
dev2.read = i2c_read;
|
||||
dev2.write = i2c_write;
|
||||
dev2.delay_ms = i2c_delay;
|
||||
bme280_init(&dev2);
|
||||
|
||||
// INIT DISPLAY
|
||||
u8g2_esp32_hal_t u8g2_esp32_hal = U8G2_ESP32_HAL_DEFAULT;
|
||||
u8g2_esp32_hal.sda = 18;
|
||||
@ -213,10 +486,30 @@ void app_main(void)
|
||||
u8g2_InitDisplay(&u8g2); // send init sequence to the display, display is in sleep mode after this,
|
||||
u8g2_SetPowerSave(&u8g2, 0); // wake up display
|
||||
|
||||
// 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();
|
||||
|
||||
while (1) {
|
||||
read_sensor(&dev, &temp, &pressure, &humidity);
|
||||
read_sensor(&dev2, &temp2, &pressure2, &humidity2);
|
||||
printf("%i °c, %i hPa, %i %%\r\n", temp, pressure, humidity);
|
||||
print_data(&u8g2, temp, pressure, humidity);
|
||||
printf("%i °c, %i hPa, %i %%\r\n", temp2, pressure2, humidity2);
|
||||
print_data(&u8g2, temp, pressure, humidity, temp2, pressure2, humidity2);
|
||||
vTaskDelay(250 / portTICK_PERIOD_MS);
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user