openmv/scripts/examples/09-OpenMV-Boards/99-Tests/selftest.py
2023-07-05 19:03:37 +02:00

86 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
import 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()