first commit

examples/spidev_test.py

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+import wiringpi
+import argparse
+
+parser = argparse.ArgumentParser(description='')
+parser.add_argument("--channel", type=int, default=1, help='specify the spi channel')
+parser.add_argument("--port", type=int, default=0, help='specify the spi port')
+parser.add_argument("--speed", type=int, default=500000, help='specify the spi speed')
+parser.add_argument("--mode", type=int, default=0, help='specify the spi mode')
+args = parser.parse_args()
+
+default_tx = [
+        0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+        0x40, 0x00, 0x00, 0x00, 0x00, 0x95,
+        0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+        0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+        0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+        0xF0, 0x0D,
+]
+
+def hexdump(src, line_size, prefix):
+    result = []
+    digits = 4 if isinstance(src, str) else 2
+
+    for i in range(0, len(src), line_size):
+        s = src[i:i + line_size]
+        hexa = ' '.join([hex(x)[2:].upper().zfill(digits) for x in s])
+        text = ''.join([chr(x) if 0x20 <= x < 0x7F else '.' for x in s])
+        result.append(prefix + ' | ' + hexa.ljust(line_size * (digits + 1)) + ' |' + "{0}".format(text) + '|')
+
+    return '\n'.join(result)
+
+print("spi mode: 0x%x" % args.mode);
+print("max speed: %d Hz (%d KHz)\n" %(args.speed, args.speed / 1000), end='');
+
+wiringpi.wiringPiSPISetupMode(args.channel, args.port, args.speed, args.mode)
+revlen, recvData = wiringpi.wiringPiSPIDataRW(args.channel, bytes(default_tx))
+
+print(hexdump(bytes(default_tx), 32, "TX"))
+print(hexdump(bytes(recvData), 32, "RX"))