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Ai-Thinker CAM board and OV2640 #5

Closed B0RJA closed 5 years ago

B0RJA commented 5 years ago

I am testing the code with the Ai-Thinker CAM board using an OV2640 sensor.

The initial camera probe fails with 0x20001 error (ESP_ERR_CAMERA_NOT_DETECTED).

I have used the same hardware and PIN configuration with the @igrr example with no problems.

Have you tested the code using the OV2640 sensor?

This is the PIN config:

//Ai-Thinker CAM board PIN Map
#define CAM_PIN_PWDN    -1 //power down is not used
#define CAM_PIN_RESET   -1 //software reset will be performed
#define CAM_PIN_XCLK     0
#define CAM_PIN_SIOD    26
#define CAM_PIN_SIOC    27

#define CAM_PIN_D7      35
#define CAM_PIN_D6      34
#define CAM_PIN_D5      39
#define CAM_PIN_D4      36
#define CAM_PIN_D3      21
#define CAM_PIN_D2      19
#define CAM_PIN_D1      18
#define CAM_PIN_D0       5
#define CAM_PIN_VSYNC   25
#define CAM_PIN_HREF    23
#define CAM_PIN_PCLK    22

And the error:

E (397) camera: Enabling XCLK output                                            
E (397) camera: Initializing SSCB                                               
E (397) camera: Software resetting camera                                       
SCCB_Write [ff]=01 failed                                                       
SCCB_Write [12]=80 failed                                                       
E (407) camera: Searching for camera address                                    
E (427) camera: Camera probe failed with error 0x20001                          
E (427) wifi station: Camera Init Failed                                        
I (427) wifi station: ESP_WIFI_MODE_ST
me-no-dev commented 5 years ago

Seems the soft I2C is not happy. I have hit a similar issue with the soft I2C here on another device. I will push an update, so if you can please give it a shot when I do (will do some more testing and post here).

me-no-dev commented 5 years ago

I looked around for schematic of that board... not found :) Can you please try changing the following lines https://github.com/espressif/esp32-camera/blob/master/driver/twi.c#L257-L258

to

    pinMode(twi_sda, OPEN_DRAIN | PULLUP | INPUT | OUTPUT);
    pinMode(twi_scl, OPEN_DRAIN | PULLUP | INPUT | OUTPUT);

I also need to adjust timing, though that should not be an issue. I think that AI-Thinker forgot to add pull-ups to the camera i2c

B0RJA commented 5 years ago

Thank you for your quick response.

I will test the changes this afternoon and report the result.

The board schematic can be found on the following link: https://github.com/SeeedDocument/forum_doc/raw/master/reg/ESP32_CAM_V1.6.pdf and more details on the product page: https://www.seeedstudio.com/esp32-cam-p-3153.html

The board is available in Aliexpress: https://es.aliexpress.com/w/wholesale-esp32-cam.html?SortType=total_tranpro_desc&g=y&SearchText=esp32+cam

me-no-dev commented 5 years ago

thanks for schematic :) what I see is that there are pull-ups on the I2C lines. But I also see that cam power is defined to pin 32. Can you add code to make sure that io32 is output and HIGH before you attempt to start the cam?

me-no-dev commented 5 years ago

to be frank, I have tested the code in this repo with a few different camera boards without a single fail. I do not have this AI-Thinker though... I hope that it's this power thing

B0RJA commented 5 years ago

the problem was solved setting CAM_PIN_RESET to 32. Thank you!

aguaviva commented 5 years ago

@Borja, I am having a similar issue (although I got the reset pin correctly) Did you do anything else to get it to work?

B0RJA commented 5 years ago

@aguaviva Try this demo. Clone the esp-who repo recursively and you will get the camera driver and other required components. In the first make of the demo just configure the esp32-cam board.

aguaviva commented 5 years ago

@B0RJA you made my day, it works like a charm!!!

lvturner commented 5 years ago

Not sure if I should open a new issue on this or just comment here... for now here will suffice.

I'm have a similar issue, but different error messages - my setup is the same as the parents, I've corrected the reset pin, but I still get an error message (noted below, slightly different from others)

I (359) AuntyCam: Booting...
D (369) camera: Enabling XCLK output
D (369) ledc: LEDC_PWM CHANNEL 0|GPIO 00|Duty 0002|Time 0
D (379) camera: Initializing SSCB
D (379) camera: Resetting camera
I (379) gpio: GPIO[32]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:0 
D (409) camera: Searching for camera address
E (419) camera: Camera probe failed with error 0x20001
E (419) AuntyCam: Camera Init Failed

I tried the methods suggested in this thread in varying combinations, to no avail.

I've also attempted cloning the esp-who demo as suggested by @B0RJA but it also fails.

The only thing that does seem to work, is the following repository: https://github.com/donny681/ESP32_CAMERA_QR which will detect and run the camera on this board without (much) issue.

I've noticed there seem to be at least two different variants of the AI-Thinker ESP32-CAM board, one with a reset switch on the back, and one without - for what it's worth mine has the reset switch on the back.

If anyone has any ideas or suggestions, I'd be really keen to hear them - right now I'm at a total loss and quite confused!

B0RJA commented 5 years ago

@lvturner Can you post the pinout of your board, or the page where you bought it, to check if is the same as mine?

lvturner commented 5 years ago

@B0RJA Lightning fast with your response! Here's an update:

I've just modified camera.c line 870 to remove the else statement found there to force a reset on the camera, I now get the following in the logs

I (145) camera: Resetting OV2640
SCCB_Write [ff]=01 failed
SCCB_Write [12]=80 failed
E (165) camera: Camera probe failed with error 0x20001
E (165) AuntyCam: Camera Init Failed

Which is at least consistent with your original error!

Purchased from here: https://item.taobao.com/item.htm?spm=a1z09.2.0.0.fc652e8dP485Zp&id=577628508892&_u=43nqq4so7e01

I've also attached a couple of photos of the exact board I have, in case it helps any

img_6176 img_4222

Editing to avoid spamming this thread with loads of replies...

Getting closer

From line 858, I changed it to the following (the gpio_set_level lines were originally the inverse of this) - I also ensure that the reset code is called by removing the else statement found on line 870

if(config->pin_reset >= 0) {
        ESP_LOGD(TAG, "Resetting camera");
        gpio_config_t conf = { 0 };
        conf.pin_bit_mask = 1LL << config->pin_reset;
        conf.mode = GPIO_MODE_OUTPUT;
        gpio_config(&conf);

        gpio_set_level(config->pin_reset, 1);
        vTaskDelay(10 / portTICK_PERIOD_MS);
        gpio_set_level(config->pin_reset, 0);
        vTaskDelay(10 / portTICK_PERIOD_MS);
#if CONFIG_OV2640_SUPPORT
    } else {
        //reset OV2640
        ESP_LOGI(TAG, "Resetting OV2640");
        SCCB_Write(0x30, 0xFF, 0x01);//bank sensor
        SCCB_Write(0x30, 0x12, 0x80);//reset
        vTaskDelay(10 / portTICK_PERIOD_MS);
#endif
    }

I now get the following output on the console, which looks far more promising

I (110) AuntyCam: Booting...
I (120) gpio: GPIO[32]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:0 
I (130) gpio: GPIO[32]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:0 
I (200) gpio: GPIO[35]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0 
I (200) gpio: GPIO[34]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0 
I (210) gpio: GPIO[39]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0 
I (220) gpio: GPIO[36]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0 
I (230) gpio: GPIO[21]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0 
I (240) gpio: GPIO[19]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0 
I (250) gpio: GPIO[18]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0 
I (260) gpio: GPIO[5]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0 
I (270) gpio: GPIO[25]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0 
I (270) gpio: GPIO[23]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0 
I (280) gpio: GPIO[22]| InputEn: 1| OutputEn: 0| OpenDrain: 0| Pullup: 1| Pulldown: 0| Intr:0 
I (290) camera: Allocating 1 frame buffers (234 KB total)
I (330) camera: Allocating 234 KB frame buffer in OnBoard RAM
E (550) sccb: SCCB_Read [c3] failed rc=3

Unfortunately, not quite far enough to obtain an image yet ;)

Further update - increasing the vTaskDelay call in the reset routines from 10 to 100 has gotten rid of the SCCB_Read/Write warnings, however, I'm still not able to produce a valid JPG from the camera

lvturner commented 5 years ago

Replaced the camera on the board with another, working properly now - suspect the original camera is just very temperamental :|

videobuff commented 5 years ago

Is it possible to switch of the FLASH LED ?

B0RJA commented 5 years ago

In my board (Ai-Thinker CAM) the flash led is connected to GPIO 4 with is also serves as Data 1 to the microSD card. If you do not use the microSD, it is possible to configure the pin as output with the gpio_set_direction and to low level with the gpio_set_level function. This turns off the light but unfortunately the pin is configured during boot as input and the light is visible for a moment after power on. I ended up removing physically the led from the board.

buitre-buitaker commented 5 years ago

Is it possible to switch of the FLASH LED ?

Yes, just set it to LOW.

int lampledPin = 4;

setup()

pinMode(lampledPin, OUTPUT);

loop()

digitalWrite(lampledPin, LOW);

macste7 commented 5 years ago

Hi @B0RJA. What I must do when I see this error? https://pastebin.com/nyJXVChg

xenpac commented 4 years ago

resolder pins https://community.home-assistant.io/t/for-those-struggling-to-get-esp32-cam-clone-ai-thinker-module-working/127517

chandana9123 commented 4 years ago

how to take photo using esp32 cam and send it to server when interrupt is called, without storing photo in sd card

rtarta commented 4 years ago

@chandana9123 My friend fallwo this url https://www.instagram.com/arduinonet/ there is a sample and show case will be in 4 days.

KeenStratium commented 4 years ago

@chandana9123 My friend fallwo this url https://www.instagram.com/arduinonet/ there is a sample and show case will be in 4 days.

Got any public repo code for that demo? thanks

rtarta commented 4 years ago

@KeenStratium You can check this tutorial. https://rahmitugrulaltin.blogspot.com/2020/04/esp32-camera-taking-picture-and-send-to.html

KeenStratium commented 4 years ago

@KeenStratium You can check this tutorial. https://rahmitugrulaltin.blogspot.com/2020/04/esp32-camera-taking-picture-and-send-to.html

Thanks got it working! I've been struggling to have both WiFi and BLE enabled while sending a photo to a web server, this code helped.

pylover commented 2 years ago

This repo is not working with OV2640 at all.

But I can confirm the repo mentioned by @lvturner is working well: https://github.com/donny681/ESP32_CAMERA_QR.