Hi,
I’m attempting to trigger a snapshot every time the camera receives a TTL pulse. I keep getting the same error which I believe is related to pin allocation:
ValueError: ExtInt vector 14 is already in use
. Below is my code.
import sensor, image, time
from pyb import Pin, ExtInt
sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QVGA)
sensor.skip_frames(time = 2000)
clock = time.clock()
syncFlag = 0
def callback (line):
syncFlag = 1
while(True):
ext = ExtInt(Pin('P0'), ExtInt.IRQ_RISING, Pin.PULL_UP, callback)
if (syncFlag == 1):
img=image.snapshot()
syncFlag = 0