diff --git a/examples/single_chip/camera_web_server/main/app_camera.c b/examples/single_chip/camera_web_server/main/app_camera.c
index 6682487..ec851f2 100755
--- a/examples/single_chip/camera_web_server/main/app_camera.c
+++ b/examples/single_chip/camera_web_server/main/app_camera.c
@@ -20,6 +20,7 @@
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "esp_log.h"
+#include "driver/ledc.h"
#include "esp_camera.h"
#include "app_camera.h"
#include "sdkconfig.h"
@@ -44,6 +45,32 @@ void app_camera_main ()
gpio_config(&conf);
#endif
+#ifdef CONFIG_CAMERA_MODEL_AI_THINKER
+ gpio_set_direction(LED_GPIO_NUM,GPIO_MODE_OUTPUT);
+ ledc_timer_config_t ledc_timer = {
+ .duty_resolution = LEDC_TIMER_8_BIT, // resolution of PWM duty
+ .freq_hz = 1000, // frequency of PWM signal
+ .speed_mode = LEDC_LOW_SPEED_MODE, // timer mode
+ .timer_num = LEDC_TIMER_1 // timer index
+ };
+ switch (ledc_timer_config(&ledc_timer)) {
+ case ESP_ERR_INVALID_ARG: ESP_LOGE(TAG, "ledc_timer_config() parameter error"); break;
+ case ESP_FAIL: ESP_LOGE(TAG, "ledc_timer_config() Can not find a proper pre-divider number base on the given frequency and the current duty_resolution"); break;
+ default: break;
+ }
+ ledc_channel_config_t ledc_channel = {
+ .channel = LEDC_CHANNEL_1,
+ .duty = 0,
+ .gpio_num = LED_GPIO_NUM,
+ .speed_mode = LEDC_LOW_SPEED_MODE,
+ .hpoint = 0,
+ .timer_sel = LEDC_TIMER_1
+ };
+ if (ledc_channel_config(&ledc_channel) == ESP_ERR_INVALID_ARG) {
+ ESP_LOGE(TAG, "ledc_channel_config() parameter error");
+ }
+#endif
+
camera_config_t config;
config.ledc_channel = LEDC_CHANNEL_0;
config.ledc_timer = LEDC_TIMER_0;
diff --git a/examples/single_chip/camera_web_server/main/app_httpd.c b/examples/single_chip/camera_web_server/main/app_httpd.c
index fd5145f..71ea657 100644
--- a/examples/single_chip/camera_web_server/main/app_httpd.c
+++ b/examples/single_chip/camera_web_server/main/app_httpd.c
@@ -17,6 +17,7 @@
#include "esp_camera.h"
#include "img_converters.h"
#include "fb_gfx.h"
+#include "driver/ledc.h"
//#include "camera_index.h"
#include "sdkconfig.h"
@@ -47,6 +48,12 @@ static const char* TAG = "camera_httpd";
#define FACE_COLOR_PURPLE (FACE_COLOR_BLUE | FACE_COLOR_RED)
#endif
+#ifdef CONFIG_CAMERA_MODEL_AI_THINKER
+#define FLASH_LEDC_SPEED_MODE LEDC_LOW_SPEED_MODE
+#define FLASH_LEDC_CHANNEL LEDC_CHANNEL_1
+int flash_ledc_duty = 0;
+#endif
+
typedef struct {
size_t size; //number of values used for filtering
size_t index; //current value index
@@ -243,7 +250,21 @@ static esp_err_t capture_handler(httpd_req_t *req){
esp_err_t res = ESP_OK;
int64_t fr_start = esp_timer_get_time();
+ #ifdef CONFIG_CAMERA_MODEL_AI_THINKER
+ ledc_set_duty(FLASH_LEDC_SPEED_MODE, FLASH_LEDC_CHANNEL, flash_ledc_duty);
+ ledc_update_duty(FLASH_LEDC_SPEED_MODE, FLASH_LEDC_CHANNEL);
+ ESP_LOGI(TAG, "Activating LED duty cycle=%d", flash_ledc_duty);
+ vTaskDelay(150 / portTICK_PERIOD_MS);
+ #endif
+
fb = esp_camera_fb_get();
+
+ #ifdef CONFIG_CAMERA_MODEL_AI_THINKER
+ ledc_set_duty(FLASH_LEDC_SPEED_MODE, FLASH_LEDC_CHANNEL, 0);
+ ledc_update_duty(FLASH_LEDC_SPEED_MODE, FLASH_LEDC_CHANNEL);
+ ESP_LOGI(TAG, "LED Off");
+ #endif
+
if (!fb) {
ESP_LOGE(TAG, "Camera capture failed");
httpd_resp_send_500(req);
@@ -360,11 +381,18 @@ static esp_err_t stream_handler(httpd_req_t *req){
httpd_resp_set_hdr(req, "Access-Control-Allow-Origin", "*");
+#ifdef CONFIG_CAMERA_MODEL_AI_THINKER
+ ledc_set_duty(FLASH_LEDC_SPEED_MODE, FLASH_LEDC_CHANNEL, flash_ledc_duty);
+ ledc_update_duty(FLASH_LEDC_SPEED_MODE, FLASH_LEDC_CHANNEL);
+ ESP_LOGI(TAG, "Activating LED duty cycle=%d", flash_ledc_duty);
+#endif
+
while(true){
#if CONFIG_ESP_FACE_DETECT_ENABLED
detected = false;
face_id = 0;
#endif
+
fb = esp_camera_fb_get();
if (!fb) {
ESP_LOGE(TAG, "Camera capture failed");
@@ -490,6 +518,12 @@ static esp_err_t stream_handler(httpd_req_t *req){
);
}
+#ifdef CONFIG_CAMERA_MODEL_AI_THINKER
+ ledc_set_duty(FLASH_LEDC_SPEED_MODE, FLASH_LEDC_CHANNEL, 0);
+ ledc_update_duty(FLASH_LEDC_SPEED_MODE, FLASH_LEDC_CHANNEL);
+ ESP_LOGI(TAG, "LED Off");
+#endif
+
last_frame = 0;
return res;
}
@@ -557,6 +591,9 @@ static esp_err_t cmd_handler(httpd_req_t *req){
else if(!strcmp(variable, "special_effect")) res = s->set_special_effect(s, val);
else if(!strcmp(variable, "wb_mode")) res = s->set_wb_mode(s, val);
else if(!strcmp(variable, "ae_level")) res = s->set_ae_level(s, val);
+#if CONFIG_CAMERA_MODEL_AI_THINKER
+ else if(!strcmp(variable, "flash_level")) flash_ledc_duty = val;
+#endif
#if CONFIG_ESP_FACE_DETECT_ENABLED
else if(!strcmp(variable, "face_detect")) {
@@ -620,7 +657,9 @@ static esp_err_t status_handler(httpd_req_t *req){
p+=sprintf(p, "\"hmirror\":%u,", s->status.hmirror);
p+=sprintf(p, "\"dcw\":%u,", s->status.dcw);
p+=sprintf(p, "\"colorbar\":%u", s->status.colorbar);
-
+#ifdef CONFIG_CAMERA_MODEL_AI_THINKER
+ p+= sprintf(p, "\"flash_level\":%u", flash_ledc_duty);
+#endif
#if CONFIG_ESP_FACE_DETECT_ENABLED
p+=sprintf(p, ",\"face_detect\":%u", detection_enabled);
#if CONFIG_ESP_FACE_RECOGNITION_ENABLED
diff --git a/examples/single_chip/camera_web_server/main/include/app_camera.h b/examples/single_chip/camera_web_server/main/include/app_camera.h
index 8cccfd4..7ff3795 100755
--- a/examples/single_chip/camera_web_server/main/include/app_camera.h
+++ b/examples/single_chip/camera_web_server/main/include/app_camera.h
@@ -119,6 +119,7 @@
#define HREF_GPIO_NUM 23
#define PCLK_GPIO_NUM 22
+#define LED_GPIO_NUM 4
#elif CONFIG_CAMERA_MODEL_CUSTOM
#define PWDN_GPIO_NUM CONFIG_CAMERA_PIN_PWDN
diff --git a/examples/single_chip/camera_web_server/main/www/index_ov2640.html b/examples/single_chip/camera_web_server/main/www/index_ov2640.html
index 8460f32..3418a89 100644
--- a/examples/single_chip/camera_web_server/main/www/index_ov2640.html
+++ b/examples/single_chip/camera_web_server/main/www/index_ov2640.html
@@ -531,6 +531,12 @@
+
+