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examples/serialTest.py

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+import wiringpi
+import sys
+import argparse
+
+parser = argparse.ArgumentParser(description='')
+parser.add_argument("--device", type=str, default="/dev/ttyS4", help='specify the serial node')
+args = parser.parse_args()
+
+wiringpi.wiringPiSetup()
+serial = wiringpi.serialOpen(args.device, 115200)
+if serial < 0:
+    print("Unable to open serial device: %s"% args.device)
+    sys.exit(-1)
+
+for count in range(0, 256):
+    try:
+        print("\nOut: %3d:" % count, end="")
+        wiringpi.serialFlush(serial)
+        wiringpi.serialPutchar(serial, count)
+        wiringpi.delayMicroseconds(300000)
+
+        while wiringpi.serialDataAvail(serial):
+            print(" -> %3d" % wiringpi.serialGetchar(serial), end="")
+            wiringpi.serialFlush(serial)
+    except KeyboardInterrupt:
+        print("\nexit")
+        sys.exit(0)
+
+wiringpi.serialClose(serial)  # Pass in ID