openmv/scripts/examples/Arduino/Portenta-H7/99-Tests/selftest.py
2021-01-31 16:34:01 +02:00

78 lines
2.5 KiB
Python

# Self Test Example
#
# This example shows how your OpenMV Cam tests itself before being allowed out
# of the factory. Every OpenMV Cam should pass this test.
import sensor, time, pyb
def test_int_adc():
adc = pyb.ADCAll(12)
# Test VBAT
vbat = adc.read_core_vbat()
vbat_diff = abs(vbat-3.3)
if (vbat_diff > 0.1):
raise Exception('INTERNAL ADC TEST FAILED VBAT=%fv'%vbat)
# Test VREF
vref = adc.read_core_vref()
vref_diff = abs(vref-1.2)
if (vref_diff > 0.1):
raise Exception('INTERNAL ADC TEST FAILED VREF=%fv'%vref)
adc = None
print('INTERNAL ADC TEST PASSED...')
def test_color_bars():
sensor.reset()
# Set sensor settings
sensor.set_brightness(0)
sensor.set_saturation(3)
sensor.set_gainceiling(8)
sensor.set_contrast(2)
# Set sensor pixel format
sensor.set_framesize(sensor.QVGA)
sensor.set_pixformat(sensor.RGB565)
# Enable colorbar test mode
sensor.set_colorbar(True)
# Skip a few frames to allow the sensor settle down
for i in range(0, 100):
image = sensor.snapshot()
#color bars thresholds
t = [lambda r, g, b: r < 70 and g < 70 and b < 70, # Black
lambda r, g, b: r < 70 and g < 70 and b > 200, # Blue
lambda r, g, b: r > 200 and g < 70 and b < 70, # Red
lambda r, g, b: r > 200 and g < 70 and b > 200, # Purple
lambda r, g, b: r < 70 and g > 200 and b < 70, # Green
lambda r, g, b: r < 70 and g > 200 and b > 200, # Aqua
lambda r, g, b: r > 200 and g > 200 and b < 70, # Yellow
lambda r, g, b: r > 200 and g > 200 and b > 200] # White
# color bars are inverted for OV7725
if (sensor.get_id() == sensor.OV7725):
t = t[::-1]
#320x240 image with 8 color bars each one is approx 40 pixels.
#we start from the center of the frame buffer, and average the
#values of 10 sample pixels from the center of each color bar.
for i in range(0, 8):
avg = (0, 0, 0)
idx = 40*i+20 #center of colorbars
for off in range(0, 10): #avg 10 pixels
rgb = image.get_pixel(idx+off, 120)
avg = tuple(map(sum, zip(avg, rgb)))
if not t[i](avg[0]/10, avg[1]/10, avg[2]/10):
raise Exception('COLOR BARS TEST FAILED.'
'BAR#(%d): RGB(%d,%d,%d)'%(i+1, avg[0]/10, avg[1]/10, avg[2]/10))
print('COLOR BARS TEST PASSED...')
if __name__ == '__main__':
print('')
test_int_adc()
test_color_bars()