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429 lines
12 KiB
C
429 lines
12 KiB
C
#include "esp_wifi.h"
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#include "esp_event.h"
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#include "esp_log.h"
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#include "esp_system.h"
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#include "esp_spiffs.h"
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#include <esp_http_server.h>
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#include <nvs_flash.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/event_groups.h"
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#include "freertos/queue.h"
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#include "driver/gpio.h"
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#include "driver/ledc.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/param.h>
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#include "esp_netif.h"
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#include "esp_eth.h"
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#define WIFI_SSID "AndroidAP"
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#define WIFI_PASS "uyts6533"
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#define ESP_INTR_FLAG_DEFAULT 0
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uint8_t led_state = 1;
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volatile uint16_t led_duty = 6075;
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void connect_to_wifi(char* new_ssid, char* new_psk);
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// Event group
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static EventGroupHandle_t wifi_event_group;
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const int CONNECTED_BIT = BIT0;
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static xQueueHandle gpio_evt_queue = NULL;
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ledc_timer_config_t ledc_timer = {
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.duty_resolution = LEDC_TIMER_13_BIT, // resolution of PWM duty
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.freq_hz = 5000, // frequency of PWM signal
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.speed_mode = LEDC_LOW_SPEED_MODE, // timer mode
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.timer_num = LEDC_TIMER_1, // timer index
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.clk_cfg = LEDC_AUTO_CLK, // Auto select the source clock
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};
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ledc_channel_config_t ledc_channel =
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{
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.channel = LEDC_CHANNEL_0,
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.duty = 0,
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.gpio_num = 5,
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.speed_mode = LEDC_LOW_SPEED_MODE,
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.hpoint = 0,
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.timer_sel = LEDC_TIMER_1
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};
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static char* website_lamp_str ="\
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<input type=\"submit\" name=\"lamp_state\" onclick=\"sendState(this.value)\" value=\"ON\"> \
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<input type=\"submit\" name=\"lamp_state\" onclick=\"sendState(this.value)\" value=\"OFF\"> \
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<input type=\"range\" min=\"0\" max=\"100\" value=\"0\" oninput=\"sendSlider(this.value)\" class=\"slider\" id=\"myRange\"> \
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<script> \
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function sendSlider(data) { \
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const XHR = new XMLHttpRequest(); \
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XHR.open('POST', '/lamp_ctrl'); \
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XHR.send(\"brightness=\"+data); \
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} \
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function sendState(data) { \
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const XHR = new XMLHttpRequest(); \
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XHR.open('POST', '/lamp_ctrl'); \
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XHR.send(\"lamp_state=\"+data); \
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} \
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</script> \
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";
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static char* website_wifi_str ="<form action=\"wifi\" method=\"post\">\n<table>\n<tr>\n<td>SSID:</td>\n<td><input type=\"text\" name=\"SSID\"></td>\n</tr>\n<tr>\n<td>PSK :</td>\n<td><input type=\"text\" name=\"PSK\"></td>\n</tr>\n</table>\n<input type=\"submit\" value=\"Submit\">\n</form>";
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static esp_err_t default_get_handler(httpd_req_t *req)
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{
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httpd_resp_send(req, website_lamp_str, strlen(website_lamp_str));
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return ESP_OK;
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}
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static esp_err_t web_wifi_get_handler(httpd_req_t *req)
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{
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httpd_resp_send(req, website_wifi_str, strlen(website_wifi_str));
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return ESP_OK;
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}
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static esp_err_t web_wifi_post_handler(httpd_req_t *req)
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{
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char buf[256];
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int ret, remaining = req->content_len;
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char ssid[32];
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char psk[64];
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while (remaining > 0) {
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/* Read the data for the request */
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if ((ret = httpd_req_recv(req, buf, MIN(remaining, sizeof(buf)))) <= 0) {
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if (ret == HTTPD_SOCK_ERR_TIMEOUT) {
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/* Retry receiving if timeout occurred */
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continue;
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}
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return ESP_FAIL;
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}
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remaining -= ret;
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/* NULL terminal string */
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buf[ret] = 0;
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char *string, *found;
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string = strdup(buf);
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while( (found = strsep(&string,"&")) != NULL ){
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if(strncmp(found, "SSID=", 5)==0){
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memcpy(ssid,&found[5],strlen(&found[5])+1);
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}
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if(strncmp(found, "PSK=", 4)==0){
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memcpy(psk,&found[4],strlen(&found[4])+1);
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}
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}
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}
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connect_to_wifi(ssid, psk);
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httpd_resp_send(req, website_wifi_str, strlen(website_wifi_str));
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return ESP_OK;
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}
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static esp_err_t lamp_ctrl_post_handler(httpd_req_t *req)
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{
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char buf[100];
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int ret, remaining = req->content_len;
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while (remaining > 0) {
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/* Read the data for the request */
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if ((ret = httpd_req_recv(req, buf, MIN(remaining, sizeof(buf)))) <= 0) {
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if (ret == HTTPD_SOCK_ERR_TIMEOUT) {
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/* Retry receiving if timeout occurred */
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continue;
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}
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return ESP_FAIL;
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}
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remaining -= ret;
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if(strncmp(buf, "lamp_state=ON", 13)==0){
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led_state=1;
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}
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if(strncmp(buf, "lamp_state=OFF", 14)==0){
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led_state=0;
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}
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if(strncmp(buf, "brightness=", 11)==0){
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int bright = atoi(&buf[11]);
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printf("bright=%d\n", bright);
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int duty = ((1<<13)-1)/100*bright;
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printf("duty=%d\n\n", duty);
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led_duty = duty;
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}
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}
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httpd_resp_send(req, NULL, 0);
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return ESP_OK;
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}
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static const httpd_uri_t default_uri = {
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.uri = "/",
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.method = HTTP_GET,
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.handler = &default_get_handler
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};
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static const httpd_uri_t web_wifi_uri = {
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.uri = "/wifi",
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.method = HTTP_GET,
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.handler = &web_wifi_get_handler
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};
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static const httpd_uri_t web_wifi_post_uri = {
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.uri = "/wifi",
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.method = HTTP_POST,
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.handler = &web_wifi_post_handler
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};
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static const httpd_uri_t lamp_ctrl_post_uri = {
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.uri = "/lamp_ctrl",
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.method = HTTP_POST,
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.handler = &lamp_ctrl_post_handler
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};
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static void IRAM_ATTR gpio_isr_handler(void* arg)
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{
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uint32_t gpio_num = (uint32_t) arg;
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xQueueSendFromISR(gpio_evt_queue, &gpio_num, NULL);
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}
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static void button_debounce_task(void* arg){
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static uint8_t debounce_active;
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if(!debounce_active){
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debounce_active = 1;
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printf("debounce active\n");
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vTaskDelay(50 / portTICK_RATE_MS);
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if(gpio_get_level(17)==0){
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led_state^=1;
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printf("setting state = %d\n",led_state);
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}
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debounce_active = 0;
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}
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vTaskDelete( NULL );
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}
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static void led_task(void* arg)
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{
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printf("started led task!");
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for(;;){
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if(led_state){
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ledc_set_duty(ledc_channel.speed_mode, ledc_channel.channel, led_duty);
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ledc_update_duty(ledc_channel.speed_mode, ledc_channel.channel);
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}
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else{
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ledc_set_duty(ledc_channel.speed_mode, ledc_channel.channel, 0);
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ledc_update_duty(ledc_channel.speed_mode, ledc_channel.channel);
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}
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vTaskDelay(10 / portTICK_RATE_MS);
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}
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}
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static void gpio_task(void* arg)
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{
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printf("GPIO task started\n");
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uint32_t io_num;
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for(;;) {
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if(xQueueReceive(gpio_evt_queue, &io_num, portMAX_DELAY)) {
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xTaskCreate(&button_debounce_task, "button_debounce_task", 2048, NULL, 10, NULL);
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}
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}
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}
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void connect_to_wifi(char* new_ssid, char* new_psk){
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printf("ssid: \'%s\'\n", new_ssid);
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printf("psk:\'%s\'\n", new_psk);
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ESP_ERROR_CHECK(esp_wifi_stop());
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wifi_init_config_t wifi_init_config = WIFI_INIT_CONFIG_DEFAULT();
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ESP_ERROR_CHECK(esp_wifi_init(&wifi_init_config));
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ESP_ERROR_CHECK(esp_wifi_set_storage(WIFI_STORAGE_RAM));
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ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
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// configure the wifi connection and start the interface
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wifi_config_t wifi_config = {
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.sta = {
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.ssid = {*new_ssid},
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.password = {*new_psk}
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}
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};
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strcpy(&(wifi_config.sta.ssid), new_ssid);
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strcpy(&(wifi_config.sta.password), new_psk);
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printf("ssid: \'%s\'\n", wifi_config.sta.ssid);
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printf("psk: \'%s\'\n", wifi_config.sta.password);
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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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}
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// Wifi event handler
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static esp_err_t event_handler(void *ctx, system_event_t *event)
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{
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switch(event->event_id) {
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case SYSTEM_EVENT_STA_START:
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esp_wifi_connect();
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break;
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case SYSTEM_EVENT_STA_GOT_IP:
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xEventGroupSetBits(wifi_event_group, CONNECTED_BIT);
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break;
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case SYSTEM_EVENT_STA_DISCONNECTED:
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xEventGroupClearBits(wifi_event_group, CONNECTED_BIT);
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printf("disconnected!\n");
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break;
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default:
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break;
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}
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return ESP_OK;
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}
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// Main application
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void app_main()
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{
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ledc_timer_config(&ledc_timer);
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ledc_channel_config(&ledc_channel);
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xTaskCreate(&led_task, "led_task", 2048, NULL, 5, NULL);
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gpio_config_t io_conf;
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io_conf.intr_type = GPIO_PIN_INTR_NEGEDGE;
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io_conf.pin_bit_mask = (1ULL<<17);
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io_conf.mode = GPIO_MODE_INPUT;
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io_conf.pull_down_en = 0;
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io_conf.pull_up_en = 1;
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gpio_config(&io_conf);
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gpio_evt_queue = xQueueCreate(10, sizeof(uint32_t));
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xTaskCreate(&gpio_task, "gpio_task", 2048, NULL, 10, NULL);
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gpio_install_isr_service(ESP_INTR_FLAG_DEFAULT);
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gpio_isr_handler_add(17, gpio_isr_handler, (void*) 17);
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//esp_vfs_spiffs_conf_t spiffs_conf = {
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// .base_path = "/spiffs",
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// .partition_label = NULL,
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// .max_files = 5,
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// .format_if_mount_failed = true
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//};
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//esp_err_t ret = esp_vfs_spiffs_register(&spiffs_conf);
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//static const char *TAG = "example";
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//if (ret != ESP_OK) {
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// if (ret == ESP_FAIL) {
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// ESP_LOGE(TAG, "Failed to mount or format filesystem");
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// } else if (ret == ESP_ERR_NOT_FOUND) {
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// ESP_LOGE(TAG, "Failed to find SPIFFS partition");
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// } else {
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// ESP_LOGE(TAG, "Failed to initialize SPIFFS (%d)", ret);
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// }
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// return;
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//}
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//size_t total = 0, used = 0;
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//ret = esp_spiffs_info(NULL, &total, &used);
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//if (ret != ESP_OK) {
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// ESP_LOGE(TAG, "Failed to get SPIFFS partition information");
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//
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//}
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//ESP_LOGI(TAG, "Reading file");
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//FILE* f = fopen("/spiffs/index.html", "r");
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//if (f == NULL) {
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// ESP_LOGE(TAG, "Failed to open file for reading");
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// return;
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//}
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//char line[64];
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//fgets(line, sizeof(line), f);
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//fclose(f);
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//// strip newline
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//char* pos = strchr(line, '\n');
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//if (pos) {
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// *pos = '\0';
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//}
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//ESP_LOGI(TAG, "Read from file: '%s'", line);
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//// All done, unmount partition and disable SPIFFS
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//esp_vfs_spiffs_unregister(NULL);
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//ESP_LOGI(TAG, "SPIFFS unmounted");
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// disable the default wifi logging
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esp_log_level_set("wifi", ESP_LOG_NONE);
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// initialize NVS
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ESP_ERROR_CHECK(nvs_flash_init());
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// create the event group to handle wifi events
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wifi_event_group = xEventGroupCreate();
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// initialize the tcp stack
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tcpip_adapter_init();
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// initialize the wifi event handler
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ESP_ERROR_CHECK(esp_event_loop_init(event_handler, NULL));
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// initialize the wifi stack in STAtion mode with config in RAM
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wifi_init_config_t wifi_init_config = WIFI_INIT_CONFIG_DEFAULT();
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ESP_ERROR_CHECK(esp_wifi_init(&wifi_init_config));
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ESP_ERROR_CHECK(esp_wifi_set_storage(WIFI_STORAGE_RAM));
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ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
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// configure the wifi connection and start the interface
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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_config(ESP_IF_WIFI_STA, &wifi_config));
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ESP_ERROR_CHECK(esp_wifi_start());
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printf("Connecting to %s\n", WIFI_SSID);
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EventBits_t uxBits;
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uxBits = xEventGroupWaitBits(wifi_event_group, CONNECTED_BIT, false, true, 5000 / portTICK_PERIOD_MS);
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if( ( uxBits & CONNECTED_BIT ) != 0 )
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{
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printf("Connected!\n");
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}
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else{
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printf("Not connected!\n");
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ESP_ERROR_CHECK(esp_wifi_stop());
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esp_wifi_set_mode(WIFI_MODE_AP);
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wifi_config_t ap_config = {
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.ap = {
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.ssid = "lamp",
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.channel = 0,
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.authmode = WIFI_AUTH_OPEN,
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.ssid_hidden = 0,
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.max_connection = 1,
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.beacon_interval = 100
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}
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};
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esp_wifi_set_config(WIFI_IF_AP, &ap_config);
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ESP_ERROR_CHECK(esp_wifi_start());
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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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printf("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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httpd_register_uri_handler(server, &default_uri);
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httpd_register_uri_handler(server, &web_wifi_uri);
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httpd_register_uri_handler(server, &web_wifi_post_uri);
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httpd_register_uri_handler(server, &lamp_ctrl_post_uri);
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}
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}
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