about camera init error

[shenzhenjinma]

Hi，i unable to use camera feature，how do i use this feature？can tell me ？thanks

camera.init()
I (437234) sccb: pin_sda 26 pin_scl 27

E (437234) i2c: i2c driver install error
I (437234) gpio: GPIO[32]| InputEn: 0| OutputEn: 1| OpenDrain: 0| Pullup: 0| Pulldown: 0| Intr:0
E (437304) camera: Detected camera not supported.
E (437304) camera: Camera probe failed with error 0x20004
E (437304) camera: Camera Init Failed
False

I want to know how to fix it. I used the esp32-cam by Taobao which is usually used. Could you please put a firmware of this kind? I think most users in China would use this one.

Originally posted by @ywz978020607 in #5 (comment)

[sylvesternumski]

This code depends on esp32-camera component from esp-idf. There have been many updates recently but if you replace the line:
gpio_install_isr_service(ESP_INTR_FLAG_LEVEL1 | ESP_INTR_FLAG_IRAM);

in esp32-camera/target/esp32/ll_cam.c with:
esp_err_t err = gpio_install_isr_service(ESP_INTR_FLAG_LEVEL1 | ESP_INTR_FLAG_IRAM);
if (err != ESP_OK) {
if (err != ESP_ERR_INVALID_STATE) {
ESP_LOGE(TAG, "gpio_install_isr_service failed (%x)", err);
}
else {
ESP_LOGW(TAG, "gpio_install_isr_service already installed");
}
}

The gpio service install will still fail but will allow the driver to continue and be successful.

This was suggested here: #5 (comment)
But because of all the updates, that patch doesn't line up correctly, and the location of where to update with this logic is different in the more recent esp32-camera source. (update ll_cam.c as opposed to camera.c - which is no longer there). I'm surprised that this logic has not been put into the main esp32-camera component but I'm sure there's a specific reason (it might be "board" specific and should be done only with a specific configuration and I don't want to hunt around to see about enabling it - maybe I will later if I get further)