Camera probe failed with error 0x103(ESP_ERR_INVALID_STATE)

[davefes]

Several years of fighting with various bootup issues the latest camera does the following: takes a picture, deinit, init and then it won't take a 2nd picture. A machine reset after deinit fixes it some times.

A power-on reset is the most reliable.

Appreciate any suggestions.

Camera ready?:  True
E (139170) camera: Camera probe failed with error 0x103(ESP_ERR_INVALID_STATE)
E (139180) camera: Camera Init Failed
Camera ready?:  False
E (140300) cam_hal: cam_config(409): cam intr alloc failed
E (140300) camera: Camera config failed with error 0xffffffff
E (140300) camera: Camera Init Failed
Camera ready?:  False
E (141420) cam_hal: cam_config(409): cam intr alloc failed
E (141420) camera: Camera config failed with error 0xffffffff
E (141420) camera: Camera Init Failed

import machine
import time
import gc

gc.collect()


if machine.reset_cause() == machine.SOFT_RESET:
    print('doing a machine.reset()')
    time.sleep_ms(5)
    machine.reset()

print('wait 2 seconds to allow a CTRL-C')
time.sleep(2)

pix = const(17)
frame = const(18)

PIXFORMAT = {
    'RGB565':1,    # 2BPP/RGB565
    'YUV422':2,    # 2BPP/YUV422
    'YUV420':3,    # 1.5BPP/YUV420
    'GRAYSCALE':4, # 1BPP/GRAYSCALE
    'JPEG':5,      # JPEG/COMPRESSED
    'RGB888':6,    # 3BPP/RGB888
    'RAW':7,       # RAW
    'RGB444':8,    # 3BP2P/RGB444
    'RGB555':9,    # 3BP2P/RGB555
}

FRAMESIZE = {
     '96X96':1,   # 96x96
     'QQVGA':2,   # 160x120
     'QCIF':3,    # 176x144
     'HQVGA':4,   # 240x176
     '240X240':5, # 240x240
     'QVGA':6,    # 320x240
     'CIF':7,     # 400x296
     'HVGA':8,    # 480x320
     'VGA':9,     # 640x480
     'SVGA':10,   # 800x600
     'XGA':11,    # 1024x768
     'HD':12,     # 1280x720
     'SXGA':13,   # 1280x1024
     'UXGA':14,   # 1600x1200
     'FHD':15,    # 1920x1080
     'P_HD':16,   # 720x1280
     'P_3MP':17,  # 864x1536
     'QXGA':18,   # 2048x1536
}

n = PIXFORMAT.get('JPEG')
s = FRAMESIZE.get('SXGA')

import camera  # do this after the above machine.reset()

camera.conf(pix, n)    # set pixelformat
camera.conf(frame, s)  # set framesize


def main():
    while True:
        if 1 == 1:  # for testing

          # wait for camera ready
            for i in range(5):
                cam = camera.init()
                print("Camera ready?: ", cam)
                if cam:
                    break
                else:
                    time.sleep(1)
            else:
                print('Timeout, doing a machine.reset()')
                time.sleep_ms(5)

                machine.reset()

          # other settings after init
            camera.quality(5)
            camera.brightness(-2)

            print('taking a picture')
            time.sleep_ms(10)

            img = camera.capture()
            time.sleep_ms(100)

            print('picture taken')
            time.sleep_ms(10)

            camera.deinit()

# try leaving this out
            machine.reset()

          # wait for camera ready
            for i in range(5):
                cam = camera.init()
                print("Camera ready?: ", cam)
                if cam:
                    break
                else:
                    time.sleep(1)
            else:
                print('Timeout, doing a machine.reset()')
                time.sleep_ms(5)

                machine.reset()

          # other settings after camera.init()
            camera.quality(5)
            camera.brightness(-2)

        else:
            print('looping')
            time.sleep_ms(10)


if __name__ == '__main__':
    main()