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()