2016-08-29 17:48:24 +02:00
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###############################################################################
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import argparse
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import threading
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import time
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import serial
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import copy
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2016-08-30 18:48:15 +02:00
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import binascii
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2016-08-29 17:48:24 +02:00
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###############################################################################
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parser = argparse.ArgumentParser(description='USB2SerialMux control helper tool.')
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2016-08-30 18:48:15 +02:00
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parser.add_argument("-b", "--getBaudrate", default=False, help="Get the baudrate for the USART connection.", action='store_true')
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2016-08-30 16:48:55 +02:00
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parser.add_argument("-s", "--setBaudrate", type=int, help="Something like 9600 or 115200.")
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parser.add_argument("-m", "--getMuxLine", default=False, help="Get the current multiplexer control line state.", action='store_true')
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parser.add_argument("-l", "--setMuxLine", type=int, help="Something like 0 to 7.")
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parser.add_argument("-r", "--resetToBtldr", default=False, help="Reset the device to the LUFA bootloader.", action='store_true')
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2016-08-31 17:57:41 +02:00
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parser.add_argument("-d", "--device", type=str, help="The control device like /dev/ttyACM0 or COM3.")
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2016-08-29 17:48:24 +02:00
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###############################################################################
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MSG_SOD1 = 0x3c
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MSG_SOD2 = 0x3e
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MSG_EOD1 = 0x0d
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MSG_EOD2 = 0x0a
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MSG_TYPE_ANSWER_OK = 0x01
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MSG_TYPE_ANSWER_NOK = 0x02
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MSG_TYPE_BAUDRATE = 0x03
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MSG_TYPE_MUXLINE = 0x04
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2016-08-30 16:48:55 +02:00
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MSG_TYPE_ANSWER_OK_DATA_TO_RECV = 0
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MSG_TYPE_ANSWER_NOK_DATA_TO_RECV = 0
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MSG_TYPE_BAUDRATE_DATA_TO_RECV = 4
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MSG_TYPE_MUXLINE_DATA_TO_RECV = 1
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2016-08-29 17:48:24 +02:00
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CC_CMD_SET_BAUDRATE = 0x0A
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CC_CMD_GET_BAUDRATE = 0x14
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CC_CMD_SET_MUX_LINE = 0x1E
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CC_CMD_GET_MUX_LINE = 0x28
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CC_CMD_START_BTLDR = 0x32
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###############################################################################
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2016-08-30 16:48:55 +02:00
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TIMEOUT_CNT_MAX = 50
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2016-08-29 17:48:24 +02:00
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MAIN_LOOP_DELAY_S = 0.05
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THREAD_LOOP_DELAY_S = 0.01
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###############################################################################
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2016-08-30 16:48:55 +02:00
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MUX_MIN_VAL = 0
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MUX_MAX_VAL = 7
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###############################################################################
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2016-08-31 17:57:41 +02:00
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ser = None
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device = "/dev/ttyACM0"
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2016-08-29 22:02:26 +02:00
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###############################################################################
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2016-08-29 17:48:24 +02:00
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baudrate = 0xffffffff
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muxLine = 0xff
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###############################################################################
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CC_STATE_WAIT_SOD1 = 0x01
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CC_STATE_WAIT_SOD2 = 0x02
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CC_STATE_READ_DATA = 0x03
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CC_STATE_WAIT_EOD1 = 0x04
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CC_STATE_WAIT_EOD2 = 0x05
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2016-08-30 16:48:55 +02:00
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CC_STATE_GET_TYPE = 0x06
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2016-08-29 17:48:24 +02:00
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cc_state = CC_STATE_WAIT_SOD1
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2016-08-30 16:48:55 +02:00
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cc_state_list = [ CC_STATE_WAIT_SOD1,
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CC_STATE_WAIT_SOD2,
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CC_STATE_READ_DATA,
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CC_STATE_WAIT_EOD1,
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CC_STATE_WAIT_EOD2 ]
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cc_state_fn = {}
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msg_type_list = [ MSG_TYPE_ANSWER_OK,
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MSG_TYPE_ANSWER_NOK,
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MSG_TYPE_BAUDRATE,
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MSG_TYPE_MUXLINE, ]
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msg_type_data_to_read = { MSG_TYPE_ANSWER_OK : MSG_TYPE_ANSWER_OK_DATA_TO_RECV,
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MSG_TYPE_ANSWER_NOK : MSG_TYPE_ANSWER_NOK_DATA_TO_RECV,
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MSG_TYPE_BAUDRATE : MSG_TYPE_BAUDRATE_DATA_TO_RECV,
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MSG_TYPE_MUXLINE : MSG_TYPE_MUXLINE_DATA_TO_RECV, }
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msg_type = 0
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2016-08-29 17:48:24 +02:00
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cc_data_read = 0
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cc_data_buffer = []
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# yes a separate counter to manage the order of the received messages
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cc_message_cnt = 0
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cc_received_messages = []
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###############################################################################
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2016-08-30 16:48:55 +02:00
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thread_obj = None
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thread_lock = None
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thread_started = False
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thread_stop = False
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2016-08-29 17:48:24 +02:00
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###############################################################################
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2016-08-30 16:48:55 +02:00
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def cc_init():
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global cc_state_fn
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global cc_state
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cc_state = CC_STATE_WAIT_SOD1
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cc_state_fn = { CC_STATE_WAIT_SOD1 : cc_state_fn_wait_for_sod1,
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CC_STATE_WAIT_SOD2 : cc_state_fn_wait_for_sod2,
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CC_STATE_WAIT_EOD1 : cc_state_fn_wait_for_eod1,
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CC_STATE_WAIT_EOD2 : cc_state_fn_wait_for_eod2,
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CC_STATE_GET_TYPE : cc_state_fn_get_type,
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CC_STATE_READ_DATA : cc_state_fn_read_data, }
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2016-08-29 17:48:24 +02:00
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########## function to call by the thread
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2016-08-30 16:48:55 +02:00
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def cc_dataReceiverThread():
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global ser
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global cc_state
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global cc_state_fn
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global thread_started
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global thread_stop
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2016-08-29 17:48:24 +02:00
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thread_started = True
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2016-08-30 16:48:55 +02:00
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while thread_stop == False:
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2016-08-29 17:48:24 +02:00
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# 1. read byte from serial port into incoming
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2016-08-30 16:48:55 +02:00
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incoming = []
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2016-08-30 18:48:15 +02:00
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bytesToRead = ser.inWaiting()
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if bytesToRead > 0:
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incoming = list(ser.read(64))
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2016-08-29 22:02:26 +02:00
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2016-08-30 18:48:15 +02:00
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# 2. process the received data
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for c in incoming:
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c = int(binascii.hexlify(c), 16)
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2016-08-30 16:48:55 +02:00
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2016-08-30 18:48:15 +02:00
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# call the cc_state specific function to process the currently received byte
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cc_state_fn[cc_state](c)
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2016-08-29 17:48:24 +02:00
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2016-08-30 18:48:15 +02:00
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if cc_state not in cc_state_list:
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cc_state = CC_STATE_WAIT_SOD1
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2016-08-30 16:48:55 +02:00
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2016-08-29 17:48:24 +02:00
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time.sleep(THREAD_LOOP_DELAY_S)
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thread_started = False
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##########
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2016-08-30 16:48:55 +02:00
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def cc_startReceiverThread():
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global thread_obj
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global thread_lock
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global thread_stop
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2016-08-29 17:48:24 +02:00
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if thread_started == False:
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thread_lock = threading.Lock()
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2016-08-30 16:48:55 +02:00
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thread_obj = threading.Thread(target=cc_dataReceiverThread)
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2016-08-29 17:48:24 +02:00
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thread_obj.start()
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thread_stop = False
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##########
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2016-08-30 16:48:55 +02:00
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def cc_stopReceiverThread():
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global thread_obj
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global thread_started
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global thread_stop
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if thread_started == True:
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thread_stop = True
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thread_obj.join() # wait for the thread to finish
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2016-08-29 17:48:24 +02:00
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##### CC_STATE_WAIT_SOD1
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def cc_state_fn_wait_for_sod1(c):
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2016-08-30 16:48:55 +02:00
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global cc_data_read
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global msg_type
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global cc_data_buffer
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global cc_state
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2016-08-29 17:48:24 +02:00
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cc_data_read = 0
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2016-08-30 16:48:55 +02:00
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msg_type = 0
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2016-08-29 17:48:24 +02:00
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cc_data_buffer = []
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if c == MSG_SOD1:
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cc_state = CC_STATE_WAIT_SOD2
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2016-08-30 16:48:55 +02:00
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else:
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2016-08-29 17:48:24 +02:00
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cc_state = CC_STATE_WAIT_SOD1
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##### CC_STATE_WAIT_SOD2
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def cc_state_fn_wait_for_sod2(c):
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2016-08-30 16:48:55 +02:00
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global cc_state
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2016-08-29 17:48:24 +02:00
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if c == MSG_SOD2:
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cc_state = CC_STATE_GET_TYPE
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2016-08-30 16:48:55 +02:00
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else:
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2016-08-29 17:48:24 +02:00
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cc_state = CC_STATE_WAIT_SOD1
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##### CC_STATE_GET_TYPE
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def cc_state_fn_get_type(c):
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2016-08-30 16:48:55 +02:00
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global msg_type
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global cc_state
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if c in msg_type_list:
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msg_type = c
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2016-08-30 18:48:15 +02:00
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2016-08-30 16:48:55 +02:00
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if msg_type_data_to_read[msg_type] > 0:
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2016-08-29 17:48:24 +02:00
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cc_state = CC_STATE_READ_DATA
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else:
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cc_state = CC_STATE_WAIT_EOD1
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2016-08-30 16:48:55 +02:00
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else:
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2016-08-29 17:48:24 +02:00
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cc_state = CC_STATE_WAIT_SOD1
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##### CC_STATE_READ_DATA
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def cc_state_fn_read_data(c):
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2016-08-30 16:48:55 +02:00
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global cc_data_buffer
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global cc_data_read
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global cc_state
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if cc_data_read <= msg_type_data_to_read[msg_type] - 1:
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cc_data_buffer.append(c)
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2016-08-29 17:48:24 +02:00
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cc_data_read = cc_data_read + 1
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2016-08-30 16:48:55 +02:00
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if cc_data_read == msg_type_data_to_read[msg_type]:
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2016-08-29 17:48:24 +02:00
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cc_state = CC_STATE_WAIT_EOD1
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##### CC_STATE_WAIT_EOD1
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def cc_state_fn_wait_for_eod1(c):
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2016-08-30 16:48:55 +02:00
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global cc_state
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2016-08-29 17:48:24 +02:00
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if c == MSG_EOD1:
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cc_state = CC_STATE_WAIT_EOD2
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2016-08-30 16:48:55 +02:00
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else:
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2016-08-29 17:48:24 +02:00
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cc_state = CC_STATE_WAIT_SOD1
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##### CC_STATE_WAIT_EOD2
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def cc_state_fn_wait_for_eod2(c):
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2016-08-30 16:48:55 +02:00
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global thread_lock
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global cc_message_cnt
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global cc_state
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2016-08-29 17:48:24 +02:00
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if c == MSG_EOD2:
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# TODO process or save the data
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is_message_read = False
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thread_lock.acquire()
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2016-08-30 16:48:55 +02:00
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cc_received_messages.append([ cc_message_cnt,
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msg_type,
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is_message_read,
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copy.deepcopy(cc_data_buffer) ])
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2016-08-29 17:48:24 +02:00
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thread_lock.release()
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cc_message_cnt = cc_message_cnt + 1
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cc_state = CC_STATE_WAIT_SOD1
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###############################################################################
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2016-08-30 16:48:55 +02:00
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def send_getBaudrate():
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print "send: get baudrate (0x%02x)" % (CC_CMD_GET_BAUDRATE)
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2016-08-29 17:48:24 +02:00
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sendSerialData([CC_CMD_GET_BAUDRATE])
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2016-08-30 16:48:55 +02:00
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def send_setBaudrate(b):
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2016-08-29 17:48:24 +02:00
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2016-08-30 16:48:55 +02:00
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print "send: set baudrate (0x%02x)" % (CC_CMD_SET_BAUDRATE)
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sendSerialData([ CC_CMD_SET_BAUDRATE,
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(b & 0xff000000) >> 24,
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(b & 0xff0000) >> 16,
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(b & 0xff00) >> 8,
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(b & 0xff) ])
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2016-08-29 17:48:24 +02:00
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2016-08-30 16:48:55 +02:00
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###############################################################################
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2016-08-29 17:48:24 +02:00
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2016-08-30 16:48:55 +02:00
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def send_getMuxLine():
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2016-08-29 17:48:24 +02:00
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2016-08-30 16:48:55 +02:00
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print "send: get mux line (0x%02x)" % (CC_CMD_GET_MUX_LINE)
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sendSerialData([CC_CMD_GET_MUX_LINE])
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2016-08-29 17:48:24 +02:00
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2016-08-30 16:48:55 +02:00
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def send_setMuxLine(l):
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2016-08-29 17:48:24 +02:00
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2016-08-30 16:48:55 +02:00
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print "send: set mux line (0x%02x)" % (CC_CMD_SET_MUX_LINE)
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sendSerialData([CC_CMD_SET_MUX_LINE, l])
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2016-08-29 17:48:24 +02:00
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###############################################################################
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2016-08-30 16:48:55 +02:00
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def send_resetToBtldr():
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print "send: reset to bootloader message (0x%02x)" % (CC_CMD_START_BTLDR)
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2016-08-29 17:48:24 +02:00
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sendSerialData([CC_CMD_START_BTLDR])
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###############################################################################
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#####
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def openSerialDevice(d):
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2016-08-30 16:48:55 +02:00
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global ser
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# Why 115200? Because the host defines the baudrate for the USB serial connection.
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2016-08-31 17:57:41 +02:00
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try:
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ser = serial.Serial(d, 115200, timeout=0)
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except:
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print "ERROR: Can't open the serial device " + device
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exit(1)
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2016-08-29 17:48:24 +02:00
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#####
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def closeSerialDevice():
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2016-08-30 16:48:55 +02:00
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global ser
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2016-08-29 22:02:26 +02:00
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ser.close()
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2016-08-29 17:48:24 +02:00
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#####
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def sendSerialData(data):
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2016-08-30 16:48:55 +02:00
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global ser
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2016-08-30 18:48:15 +02:00
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ser.write(bytearray([ MSG_SOD1, MSG_SOD2 ]))
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2016-08-30 16:48:55 +02:00
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ser.write(bytearray(data))
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2016-08-30 18:48:15 +02:00
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ser.write(bytearray([ MSG_EOD1, MSG_EOD2 ]))
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2016-08-29 17:48:24 +02:00
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###############################################################################
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if __name__ == "__main__":
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2016-08-30 16:48:55 +02:00
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cc_init()
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2016-08-29 17:48:24 +02:00
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# parse the commandline arguments
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args = parser.parse_args()
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dataSend = 0
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timeout = 0
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# 1. open serial device or abort
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2016-08-31 17:57:41 +02:00
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if args.device != None:
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device = args.device
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2016-08-31 18:23:38 +02:00
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openSerialDevice(device)
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2016-08-29 17:48:24 +02:00
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2016-08-30 16:48:55 +02:00
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# 2. start thread to poll cc_dataReceiverThread()
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cc_startReceiverThread()
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2016-08-29 17:48:24 +02:00
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2016-08-30 16:48:55 +02:00
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# 3. get and process the commandline arguments/parameter
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if args.resetToBtldr == True:
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send_resetToBtldr()
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2016-08-29 17:48:24 +02:00
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else:
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2016-08-30 16:48:55 +02:00
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if args.setBaudrate != None:
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baudrate = args.setBaudrate
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send_setBaudrate(baudrate)
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2016-08-29 17:48:24 +02:00
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dataSend = dataSend + 1
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2016-08-30 16:48:55 +02:00
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if args.setMuxLine != None:
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muxLine = args.setMuxLine
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# keep the mux line in range
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if muxLine < MUX_MIN_VAL:
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muxLine = MUX_MIN_VAL
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if muxLine > MUX_MAX_VAL:
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muxLine = MUX_MAX_VAL
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send_setMuxLine(muxLine)
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2016-08-29 17:48:24 +02:00
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dataSend = dataSend + 1
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2016-08-30 16:48:55 +02:00
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if args.getBaudrate == True:
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send_getBaudrate()
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2016-08-29 17:48:24 +02:00
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dataSend = dataSend + 1
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2016-08-30 16:48:55 +02:00
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if args.getMuxLine == True:
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send_getMuxLine()
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2016-08-29 17:48:24 +02:00
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dataSend = dataSend + 1
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2016-08-30 16:48:55 +02:00
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# 4. start main loop
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while dataSend > 0 and timeout < TIMEOUT_CNT_MAX:
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2016-08-29 17:48:24 +02:00
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thread_lock.acquire()
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tmp_messages = copy.deepcopy(cc_received_messages)
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thread_lock.release()
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2016-08-30 16:48:55 +02:00
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# 4.1 test for the response(s)
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2016-08-29 17:48:24 +02:00
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for e in tmp_messages:
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if e[2] == False: # test for unread message
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# process it and set the data to read
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if e[1] == MSG_TYPE_ANSWER_OK:
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print "recv: OK"
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2016-08-30 16:48:55 +02:00
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2016-08-29 17:48:24 +02:00
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elif e[1] == MSG_TYPE_ANSWER_NOK:
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print "recv: NOT OK"
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2016-08-30 16:48:55 +02:00
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2016-08-29 17:48:24 +02:00
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elif e[1] == MSG_TYPE_BAUDRATE:
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2016-08-30 16:48:55 +02:00
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baudrate = e[3][0] << 24
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baudrate += e[3][1] << 16
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baudrate += e[3][2] << 8
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baudrate += e[3][3]
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print "recv: baudrate = %d" % (baudrate)
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2016-08-29 17:48:24 +02:00
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elif e[1] == MSG_TYPE_MUXLINE:
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muxLine = e[3][0]
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2016-08-30 16:48:55 +02:00
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print "recv: muxLine = %d" % (muxLine)
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2016-08-29 17:48:24 +02:00
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else:
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2016-08-30 16:48:55 +02:00
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print "err: unknown type 0x%02x" % (e[1])
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2016-08-29 17:48:24 +02:00
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break
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thread_lock.acquire()
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cc_received_messages[e[0]][2] = True
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thread_lock.release()
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timeout = 0 # reset the timeout
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# reduce the number of messages to receive
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dataSend = dataSend - 1
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# manage the timeout behaviour
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time.sleep(MAIN_LOOP_DELAY_S)
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timeout = timeout + 1
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2016-08-30 16:48:55 +02:00
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if timeout >= TIMEOUT_CNT_MAX:
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print "Timeout happened"
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# 5. stop data processing thread
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cc_stopReceiverThread()
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2016-08-29 17:48:24 +02:00
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2016-08-30 16:48:55 +02:00
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# 6. close serial device
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2016-08-29 17:48:24 +02:00
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closeSerialDevice()
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exit(0)
|
2016-08-31 18:23:38 +02:00
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