def test_interactive(): print("Starting interactive test...") buf = b"Hello World!" serial = periphery.Serial(serial_device, 4800) print("Starting interactive test. Get out your logic analyzer, buddy!") raw_input("Press enter to continue...") # Check tostring print("Serial description: {}".format(str(serial))) assert raw_input("Serial description looks ok? y/n ") == "y" serial.baudrate = 4800 raw_input("Press enter to start transfer...") assert serial.write(buf) == len(buf) assert raw_input( "Serial transfer baudrate 4800, 8n1 occurred? y/n ") == "y" serial.baudrate = 9600 raw_input("Press enter to start transfer...") assert serial.write(buf) == len(buf) assert raw_input( "Serial transfer baudrate 9600, 8n1 occurred? y/n ") == "y" serial.baudrate = 115200 raw_input("Press enter to start transfer...") assert serial.write(buf) == len(buf) assert raw_input( "Serial transfer baudrate 115200, 8n1 occurred? y/n ") == "y" serial.close() print("Interactive test passed.")
def test_open_close(): print("Starting open/close test...") serial = periphery.Serial(serial_device, 115200) # Confirm default settings assert serial.fd > 0 assert serial.baudrate == 115200 assert serial.databits == 8 assert serial.parity == "none" assert serial.stopbits == 1 assert serial.xonxoff == False assert serial.rtscts == False # Change some stuff and check that it changed serial.baudrate = 4800 assert serial.baudrate == 4800 serial.baudrate = 9600 assert serial.baudrate == 9600 serial.databits = 7 assert serial.databits == 7 serial.parity = "odd" assert serial.parity == "odd" serial.stopbits = 2 assert serial.stopbits == 2 serial.xonxoff = True assert serial.xonxoff == True # Test serial port may not support rtscts serial.close() print("Open/close test passed.")
def test_arguments(): ptest() # Invalid data bits with AssertRaises("invalid databits", ValueError): periphery.Serial("/dev/ttyS0", 115200, databits=4) with AssertRaises("invalid databits", ValueError): periphery.Serial("/dev/ttyS0", 115200, databits=9) # Invalid parity with AssertRaises("invalid parity", ValueError): periphery.Serial("/dev/ttyS0", 115200, parity="blah") # Invalid stop bits with AssertRaises("invalid stop bits", ValueError): periphery.Serial("/dev/ttyS0", 115200, stopbits=0) with AssertRaises("invalid stop bits", ValueError): periphery.Serial("/dev/ttyS0", 115200, stopbits=3)
def test_arguments(): print("Starting arguments test...") # Invalid data bits with AssertRaises(ValueError): periphery.Serial("/dev/ttyS0", 115200, databits=4) with AssertRaises(ValueError): periphery.Serial("/dev/ttyS0", 115200, databits=9) # Invalid parity with AssertRaises(ValueError): periphery.Serial("/dev/ttyS0", 115200, parity="blah") # Invalid stop bits with AssertRaises(ValueError): periphery.Serial("/dev/ttyS0", 115200, stopbits=0) with AssertRaises(ValueError): periphery.Serial("/dev/ttyS0", 115200, stopbits=3) # Everything else is fair game, although termios might not like it. print("Arguments test passed.")
def test_open_close(): ptest() serial = periphery.Serial(serial_device, 115200) # Confirm default settings passert("fd > 0", serial.fd > 0) passert("baudrate is 115200", serial.baudrate == 115200) passert("databits is 8", serial.databits == 8) passert("parity is none", serial.parity == "none") passert("stopbits is 1", serial.stopbits == 1) passert("xonxoff is False", serial.xonxoff == False) passert("rtscts is False", serial.rtscts == False) passert("vmin is 0", serial.vmin == 0) passert("vtime is 0", serial.vtime == 0) # Change some stuff and check that it changed serial.baudrate = 4800 passert("baudrate is 4800", serial.baudrate == 4800) serial.baudrate = 9600 passert("baudrate is 9600", serial.baudrate == 9600) serial.databits = 7 passert("databits is 7", serial.databits == 7) serial.parity = "odd" passert("parity is odd", serial.parity == "odd") serial.stopbits = 2 passert("stopbits is 2", serial.stopbits == 2) serial.xonxoff = True passert("xonxoff is True", serial.xonxoff == True) # Test serial port may not support rtscts serial.vmin = 50 passert("vmin is 50", serial.vmin == 50) serial.vtime = 15.3 passert("vtime is 15.3", abs(serial.vtime - 15.3) < 0.1) serial.close()
def test_loopback(): print("Starting loopback test...") lorem_ipsum = b"Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum." serial = periphery.Serial(serial_device, 115200) # Test write/flush/read with bytes write print("Write, flush, read lorem ipsum with bytes type") assert serial.write(lorem_ipsum) == len(lorem_ipsum) serial.flush() buf = serial.read(len(lorem_ipsum), timeout=3) assert buf == lorem_ipsum # Test write/flush/read with bytearray write print("Write, flush, read lorem ipsum with bytearray type") assert serial.write(bytearray(lorem_ipsum)) == len(lorem_ipsum) serial.flush() buf = serial.read(len(lorem_ipsum), timeout=3) assert buf == lorem_ipsum # Test write/flush/read with list write print("Write, flush, read lorem ipsum with list type") assert serial.write(list(bytearray(lorem_ipsum))) == len(lorem_ipsum) serial.flush() buf = serial.read(len(lorem_ipsum), timeout=3) assert buf == lorem_ipsum # Test poll/write/flush/poll/input waiting/read print("Write, flush, poll, input waiting, read lorem ipsum") assert serial.poll(0.5) == False assert serial.write(lorem_ipsum) == len(lorem_ipsum) serial.flush() assert serial.poll(0.5) == True periphery.sleep_ms(500) assert serial.input_waiting() == len(lorem_ipsum) buf = serial.read(len(lorem_ipsum)) assert buf == lorem_ipsum # Test non-blocking poll print("Check non-blocking poll") assert serial.poll(0) == False # Test a very large read-write (likely to exceed internal buffer size (~4096)) print("Write, flush, read large buffer") lorem_hugesum = b"\xaa" * (4096 * 3) assert serial.write(lorem_hugesum) == len(lorem_hugesum) serial.flush() buf = serial.read(len(lorem_hugesum), timeout=3) assert buf == lorem_hugesum # Test read timeout print("Check read timeout") tic = time.time() assert serial.read(4096 * 3, timeout=2) == b"" toc = time.time() assert (toc - tic) > 1 # Test non-blocking read print("Check non-blocking read") tic = time.time() assert serial.read(4096 * 3, timeout=0) == b"" toc = time.time() # Assuming we weren't context switched out for a second assert int(toc - tic) == 0 serial.close() print("Loopback test passed.")
##!/usr/bin/env python3 ## -*- coding: utf-8 -*- import periphery import time import sys com1 = periphery.Serial('/dev/ttyS0', 115200) com1.write(b'Hello World!') print('s0 waitting...') time.sleep(0.1) buf = com1.read(128, 0.5) print('read %d bytes: %s' % (len(buf), buf)) com1.close() com1 = periphery.Serial('/dev/ttyS2', 115200) com1.write(b'Hello World!') print('s2 waitting...') time.sleep(0.1) buf = com1.read(128, 0.5) print('read %d bytes: %s' % (len(buf), buf)) com1.close() com1 = periphery.Serial('/dev/ttyS3', 115200) com1.write(b'Hello World!') print('s3 waitting...') time.sleep(0.1) buf = com1.read(128, 0.5) print('read %d bytes: %s' % (len(buf), buf)) com1.close()
def test_loopback(): ptest() lorem_ipsum = b"Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum." serial = periphery.Serial(serial_device, 115200) # Test write/flush/read with bytes write print("Write, flush, read lorem ipsum with bytes type") passert("wrote lorem ipsum bytes", serial.write(lorem_ipsum) == len(lorem_ipsum)) serial.flush() buf = serial.read(len(lorem_ipsum), timeout=3) passert("compare readback lorem ipsum", buf == lorem_ipsum) # Test write/flush/read with bytearray write print("Write, flush, read lorem ipsum with bytearray type") passert("wrote lorem ipsum bytearray", serial.write(bytearray(lorem_ipsum)) == len(lorem_ipsum)) serial.flush() buf = serial.read(len(lorem_ipsum), timeout=3) passert("compare readback lorem ipsum", buf == lorem_ipsum) # Test write/flush/read with list write print("Write, flush, read lorem ipsum with list type") passert("write lorem ipsum list", serial.write(list(bytearray(lorem_ipsum))) == len(lorem_ipsum)) serial.flush() buf = serial.read(len(lorem_ipsum), timeout=3) passert("compare readback lorem ipsum", buf == lorem_ipsum) # Test poll/write/flush/poll/input waiting/read print("Write, flush, poll, input waiting, read lorem ipsum") passert("poll timed out", serial.poll(0.5) == False) passert("write lorem ipsum", serial.write(lorem_ipsum) == len(lorem_ipsum)) serial.flush() passert("poll succeeded", serial.poll(0.5) == True) periphery.sleep_ms(500) passert("input waiting is lorem ipsum size", serial.input_waiting() == len(lorem_ipsum)) buf = serial.read(len(lorem_ipsum)) passert("compare readback lorem ipsum", buf == lorem_ipsum) # Test non-blocking poll print("Check non-blocking poll") passert("non-blocking poll is False", serial.poll(0) == False) # Test a very large read-write (likely to exceed internal buffer size (~4096)) print("Write, flush, read large buffer") lorem_hugesum = b"\xaa" * (4096 * 3) passert("wrote lorem hugesum", serial.write(lorem_hugesum) == len(lorem_hugesum)) serial.flush() buf = serial.read(len(lorem_hugesum), timeout=3) passert("compare readback lorem hugesum", buf == lorem_hugesum) # Test read timeout print("Check read timeout") tic = time.time() passert("read timed out", serial.read(4096 * 3, timeout=2) == b"") toc = time.time() passert("time elapsed", (toc - tic) > 1) # Test non-blocking read print("Check non-blocking read") tic = time.time() passert("read non-blocking is empty", serial.read(4096 * 3, timeout=0) == b"") toc = time.time() # Assuming we weren't context switched out for a second passert("almost no time elapsed", int(toc - tic) == 0) # Test blocking read with vmin=5 termios timeout print("Check blocking read with vmin termios timeout") serial.vmin = 5 passert("write 5 bytes of lorem ipsum", serial.write(lorem_ipsum[0:5]) == 5) serial.flush() buf = serial.read(len(lorem_ipsum)) passert("compare readback partial lorem ipsum", buf == lorem_ipsum[0:5]) # Test blocking read with vmin=5, vtime=2 termios timeout print("Check blocking read with vmin + vtime termios timeout") serial.vtime = 2 passert("write 3 bytes of lorem ipsum", serial.write(lorem_ipsum[0:3]) == 3) serial.flush() tic = time.time() buf = serial.read(len(lorem_ipsum)) toc = time.time() passert("compare readback partial lorem ipsum", buf == lorem_ipsum[0:3]) passert("time elapsed", (toc - tic) > 1) serial.close()