def __init__(self):
if ft4222.createDeviceInfoList() < 2:
raise Exception("No connected zookeeper found!")
self.dev_a = ft4222.openByDescription("FT4222 A")
self.dev_b = ft4222.openByDescription("FT4222 B")
if DEBUG:
for i in range(ft4222.createDeviceInfoList()):
print(f"Device {i}: {ft4222.getDeviceInfoDetail(i, False)}")
# Setup GPIO
self.dev_b.gpio_Init(gpio2=ft4222.Dir.OUTPUT, gpio3=ft4222.Dir.OUTPUT)
self.dev_b.setSuspendOut(False)
self.dev_b.setWakeUpInterrut(False)
# Setup I2C
self.dev_a.i2cMaster_Init(kbps=400)
self._initialize_ina()
# _____ _____ _____
# |_ | __| __ |
# |_| | |__ | -|
# |_|_|_|_____|__|__|
# MSR Electronics GmbH
#
import sys
import ft4222
nbDev = ft4222.createDeviceInfoList()
print("nb of fdti devices: {}".format(nbDev))
ftDetails = []
if nbDev <= 0:
print("no devices found...")
sys.exit(0)
print("devices:")
for i in range(nbDev):
detail = ft4222.getDeviceInfoDetail(i, False)
print(" - {}".format(detail))
ftDetails.append(detail)
dev = ft4222.openByDescription('FT4222 A')
print(dev)
dev.i2cMaster_Init(100)
def main():
""" main function """
parser = argparse.ArgumentParser(
description="Test PNG images with cifar-10 based example.",
formatter_class=argparse.RawTextHelpFormatter)
parser.add_argument(
"-p",
"--path",
required=True,
help="Relative or absolute path to the directory of test images.")
parser.add_argument("-d",
"--device",
required=True,
help="Serial device connected to MAX78000.\n"
"Linux: /dev/ttyUSB0\n"
"Windows: COM1")
args = parser.parse_args()
abs_path = os.path.realpath(args.path)
if not os.path.exists(abs_path):
print("ERROR Directory does not exists: {0}".format(abs_path))
sys.exit()
print("\nTesting images from: {0}\n".format(abs_path))
# Open device with default description
spim = ft4222.openByDescription('FT4222 A')
spim.spiMaster_Init(SPIM.Mode.SINGLE, SPIM.Clock.DIV_8, SPI.Cpol.IDLE_LOW,
SPI.Cpha.CLK_LEADING, SPIM.SlaveSelect.SS0)
# Serial port must be open before end of SPI transaction to avoid missing characters
sport = serial.Serial(args.device, SERIAL_BAUD, timeout=SERIAL_TOUT)
for filename in sorted(os.listdir(abs_path)):
# Ignore all other files
if not filename.endswith('.png'):
continue
with Image.open(os.path.join(abs_path, filename)) as img:
if not img.mode == IMG_MODE:
print_result(
filename,
"Skipped, image mode must be {0}\n".format(IMG_MODE))
continue
if not img.size == (IMG_WIDTH, IMG_HEIGHT):
print_result(
filename, "Skipped, image size must be {0}x{1}\n".format(
IMG_WIDTH, IMG_HEIGHT))
continue
image_data = img.getdata()
# Convert list of tuples to flat list
image_data = [
color_value for pixel in image_data for color_value in pixel
]
# Send image to MAX78000 SPI slave
_ = spim.spiMaster_SingleWrite(bytes(image_data), True)
# Wait for the test result
# read() blocks until SERIAL_TOUT
result = []
while 1:
char = sport.read(1)
if char == b'':
result = "Timeout"
break
result.append(char.decode('utf-8'))
if char == b'\n':
result = "".join(result)
break
print_result(filename, result)
sport.close()
spim.close()