Sat, 23 Sep 2017 10:27:49 +0200
Added more default options
Code cleanup
# Serial wrapper around pyserial that adds support for custom baudrates (250000) # on linux, when pyserial is < 2.7 # This code was copied from the pyserial 2.7 base code. # Therefore, it follows the license used by pyserial which is the '3-clause BSD license' from serial import * import sys if sys.platform.startswith('linux'): import serial.serialposix try: import pkg_resources old_version = float(pkg_resources.get_distribution("pyserial").version) < 2.7 except: old_version = True if old_version and not hasattr(serial.serialposix, "TCGETS2") and \ hasattr(serial.serialposix, "set_special_baudrate"): # Detected pyserial < 2.7 which doesn't support custom baudrates # Replacing set_special_baudrate with updated function from pyserial 2.7 TCGETS2 = 0x802C542A TCSETS2 = 0x402C542B BOTHER = 0o010000 def set_special_baudrate(port, baudrate): # right size is 44 on x86_64, allow for some growth import array buf = array.array('i', [0] * 64) try: # get serial_struct FCNTL.ioctl(port.fd, TCGETS2, buf) # set custom speed buf[2] &= ~TERMIOS.CBAUD buf[2] |= BOTHER buf[9] = buf[10] = baudrate # set serial_struct res = FCNTL.ioctl(port.fd, TCSETS2, buf) except IOError, e: raise ValueError('Failed to set custom baud rate (%s): %s' % (baudrate, e)) # We need to change the function inside the serialposix module otherwise, it won't # be called by the code within that module serial.serialposix.set_special_baudrate = set_special_baudrate