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Merge pull request #158 from rzeldent:133-esp32-cam-led-flash-not-wor…
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133-esp32-cam-led-flash-not-working
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@rzeldent
rzeldent authored Jan 5, 2025
2 parents 8be1484 + e93511d commit 32cbc24
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Showing 2 changed files with 56 additions and 30 deletions.
1 change: 1 addition & 0 deletions boards/esp32cam_ai_thinker.json
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,7 @@
"'-D ESP32CAM_AI_THINKER'",
"'-D BOARD_HAS_PSRAM'",
"'-mfix-esp32-psram-cache-issue'",
"'-D FLASH_LED_GPIO=4'",
"'-D USER_LED_GPIO=33'",
"'-D USER_LED_ON_LEVEL=LOW'",
"'-D CAMERA_CONFIG_PIN_PWDN=32'",
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85 changes: 55 additions & 30 deletions src/main.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -150,6 +150,20 @@ void handle_root()
web_server.send(200, "text/html", html);
}

#ifdef FLASH_LED_GPIO
void handle_flash()
{
log_v("handle_flash");
// If no value present, use off, otherwise convert v to integer. Depends on analog resolution for max value
auto v = web_server.hasArg("v") ? web_server.arg("v").toInt() : 0;
// If conversion fails, v = 0
analogWrite(FLASH_LED_GPIO, v);

web_server.sendHeader("Cache-Control", "no-cache, no-store, must-revalidate");
web_server.send(200);
}
#endif

void handle_snapshot()
{
log_v("handle_snapshot");
Expand Down Expand Up @@ -219,35 +233,35 @@ esp_err_t initialize_camera()
auto jpeg_quality = param_jpg_quality.value();
log_i("Frame duration: %d ms", param_frame_duration.value());
const camera_config_t camera_config = {
.pin_pwdn = CAMERA_CONFIG_PIN_PWDN, // GPIO pin for camera power down line
.pin_reset = CAMERA_CONFIG_PIN_RESET, // GPIO pin for camera reset line
.pin_xclk = CAMERA_CONFIG_PIN_XCLK, // GPIO pin for camera XCLK line
.pin_sccb_sda = CAMERA_CONFIG_PIN_SCCB_SDA, // GPIO pin for camera SDA line
.pin_sccb_scl = CAMERA_CONFIG_PIN_SCCB_SCL, // GPIO pin for camera SCL line
.pin_d7 = CAMERA_CONFIG_PIN_Y9, // GPIO pin for camera D7 line
.pin_d6 = CAMERA_CONFIG_PIN_Y8, // GPIO pin for camera D6 line
.pin_d5 = CAMERA_CONFIG_PIN_Y7, // GPIO pin for camera D5 line
.pin_d4 = CAMERA_CONFIG_PIN_Y6, // GPIO pin for camera D4 line
.pin_d3 = CAMERA_CONFIG_PIN_Y5, // GPIO pin for camera D3 line
.pin_d2 = CAMERA_CONFIG_PIN_Y4, // GPIO pin for camera D2 line
.pin_d1 = CAMERA_CONFIG_PIN_Y3, // GPIO pin for camera D1 line
.pin_d0 = CAMERA_CONFIG_PIN_Y2, // GPIO pin for camera D0 line
.pin_vsync = CAMERA_CONFIG_PIN_VSYNC, // GPIO pin for camera VSYNC line
.pin_href = CAMERA_CONFIG_PIN_HREF, // GPIO pin for camera HREF line
.pin_pclk = CAMERA_CONFIG_PIN_PCLK, // GPIO pin for camera PCLK line
.xclk_freq_hz = CAMERA_CONFIG_CLK_FREQ_HZ, // Frequency of XCLK signal, in Hz. EXPERIMENTAL: Set to 16MHz on ESP32-S2 or ESP32-S3 to enable EDMA mode
.ledc_timer = CAMERA_CONFIG_LEDC_TIMER, // LEDC timer to be used for generating XCLK
.ledc_channel = CAMERA_CONFIG_LEDC_CHANNEL, // LEDC channel to be used for generating XCLK
.pixel_format = PIXFORMAT_JPEG, // Format of the pixel data: PIXFORMAT_ + YUV422|GRAYSCALE|RGB565|JPEG
.frame_size = frame_size, // Size of the output image: FRAMESIZE_ + QVGA|CIF|VGA|SVGA|XGA|SXGA|UXGA
.jpeg_quality = jpeg_quality, // Quality of JPEG output. 0-63 lower means higher quality
.fb_count = CAMERA_CONFIG_FB_COUNT, // Number of frame buffers to be allocated. If more than one, then each frame will be acquired (double speed)
.fb_location = CAMERA_CONFIG_FB_LOCATION, // The location where the frame buffer will be allocated
.grab_mode = CAMERA_GRAB_LATEST, // When buffers should be filled
.pin_pwdn = CAMERA_CONFIG_PIN_PWDN, // GPIO pin for camera power down line
.pin_reset = CAMERA_CONFIG_PIN_RESET, // GPIO pin for camera reset line
.pin_xclk = CAMERA_CONFIG_PIN_XCLK, // GPIO pin for camera XCLK line
.pin_sccb_sda = CAMERA_CONFIG_PIN_SCCB_SDA, // GPIO pin for camera SDA line
.pin_sccb_scl = CAMERA_CONFIG_PIN_SCCB_SCL, // GPIO pin for camera SCL line
.pin_d7 = CAMERA_CONFIG_PIN_Y9, // GPIO pin for camera D7 line
.pin_d6 = CAMERA_CONFIG_PIN_Y8, // GPIO pin for camera D6 line
.pin_d5 = CAMERA_CONFIG_PIN_Y7, // GPIO pin for camera D5 line
.pin_d4 = CAMERA_CONFIG_PIN_Y6, // GPIO pin for camera D4 line
.pin_d3 = CAMERA_CONFIG_PIN_Y5, // GPIO pin for camera D3 line
.pin_d2 = CAMERA_CONFIG_PIN_Y4, // GPIO pin for camera D2 line
.pin_d1 = CAMERA_CONFIG_PIN_Y3, // GPIO pin for camera D1 line
.pin_d0 = CAMERA_CONFIG_PIN_Y2, // GPIO pin for camera D0 line
.pin_vsync = CAMERA_CONFIG_PIN_VSYNC, // GPIO pin for camera VSYNC line
.pin_href = CAMERA_CONFIG_PIN_HREF, // GPIO pin for camera HREF line
.pin_pclk = CAMERA_CONFIG_PIN_PCLK, // GPIO pin for camera PCLK line
.xclk_freq_hz = CAMERA_CONFIG_CLK_FREQ_HZ, // Frequency of XCLK signal, in Hz. EXPERIMENTAL: Set to 16MHz on ESP32-S2 or ESP32-S3 to enable EDMA mode
.ledc_timer = CAMERA_CONFIG_LEDC_TIMER, // LEDC timer to be used for generating XCLK
.ledc_channel = CAMERA_CONFIG_LEDC_CHANNEL, // LEDC channel to be used for generating XCLK
.pixel_format = PIXFORMAT_JPEG, // Format of the pixel data: PIXFORMAT_ + YUV422|GRAYSCALE|RGB565|JPEG
.frame_size = frame_size, // Size of the output image: FRAMESIZE_ + QVGA|CIF|VGA|SVGA|XGA|SXGA|UXGA
.jpeg_quality = jpeg_quality, // Quality of JPEG output. 0-63 lower means higher quality
.fb_count = CAMERA_CONFIG_FB_COUNT, // Number of frame buffers to be allocated. If more than one, then each frame will be acquired (double speed)
.fb_location = CAMERA_CONFIG_FB_LOCATION, // The location where the frame buffer will be allocated
.grab_mode = CAMERA_GRAB_LATEST, // When buffers should be filled
#if CONFIG_CAMERA_CONVERTER_ENABLED
conv_mode = CONV_DISABLE, // RGB<->YUV Conversion mode
conv_mode = CONV_DISABLE, // RGB<->YUV Conversion mode
#endif
.sccb_i2c_port = SCCB_I2C_PORT // If pin_sccb_sda is -1, use the already configured I2C bus by number
.sccb_i2c_port = SCCB_I2C_PORT // If pin_sccb_sda is -1, use the already configured I2C bus by number
};

return cam.init(camera_config);
Expand Down Expand Up @@ -316,13 +330,21 @@ void setup()
// Disable brownout
WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0);

Serial.begin(115200);
Serial.setDebugOutput(true);

#ifdef USER_LED_GPIO
pinMode(USER_LED_GPIO, OUTPUT);
digitalWrite(USER_LED_GPIO, !USER_LED_ON_LEVEL);
#endif

Serial.begin(115200);
Serial.setDebugOutput(true);
#ifdef FLASH_LED_GPIO
pinMode(FLASH_LED_GPIO, OUTPUT);
// Set resolution to 8 bits
analogWriteResolution(8);
// Turn flash led off
analogWrite(FLASH_LED_GPIO, 0);
#endif

#ifdef ARDUINO_USB_CDC_ON_BOOT
// Delay for USB to connect/settle
Expand Down Expand Up @@ -397,7 +419,10 @@ void setup()
web_server.on("/snapshot", HTTP_GET, handle_snapshot);
// Camera stream
web_server.on("/stream", HTTP_GET, handle_stream);

#ifdef FLASH_LED_GPIO
// Flash led
web_server.on("/flash", HTTP_GET, handle_flash);
#endif
web_server.onNotFound([]()
{ iotWebConf.handleNotFound(); });
}
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