82 lines
1.9 KiB
Python
82 lines
1.9 KiB
Python
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import platform
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import os
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import sys
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import time
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import threading
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# XXX FTDI Communication POC
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sys.path.append("../")
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from ftdi import FTDIComDevice, FTDI_INTERFACE_B
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def uart_console(ftdi_com):
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def read():
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while True:
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print(chr(ftdi_com.uartread()), end="")
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readthread = threading.Thread(target=read, daemon=True)
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readthread.start()
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def write():
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while True:
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for e in input():
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c = ord(e)
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ftdi_com.uartwrite(c)
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ftdi_com.uartwrite(ord("\n"))
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writethread = threading.Thread(target=write, daemon=True)
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writethread.start()
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def uart_virtual(ftdi_com):
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import pty, serial
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master, slave = pty.openpty()
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s_name = os.ttyname(slave)
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ser = serial.Serial(s_name)
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def read():
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while True:
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s = ftdi_com.uartread()
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s = bytes(chr(s).encode('utf-8'))
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os.write(master, s)
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readthread = threading.Thread(target=read, daemon=True)
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readthread.start()
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def write():
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while True:
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for c in list(os.read(master, 100)):
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ftdi_com.uartwrite(c)
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writethread = threading.Thread(target=write, daemon=True)
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writethread.start()
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return s_name
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ftdi_map = {
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"uart": 0,
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"dma": 1
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}
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ftdi_com = FTDIComDevice(FTDI_INTERFACE_B,
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mode="asynchronous",
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uart_tag=ftdi_map["uart"],
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dma_tag=ftdi_map["dma"],
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verbose=False)
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ftdi_com.open()
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# test DMA
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for i in range(256):
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ftdi_com.dmawrite([i])
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print("%02x" %(ftdi_com.dmaread()[0]), end="")
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sys.stdout.flush()
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print("")
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# test UART
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if platform.system() == "Windows":
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uart_console(ftdi_com) # redirect uart to console since pty does not exist on Windows platforms
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else:
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s_name = uart_virtual(ftdi_com)
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print(s_name)
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while True:
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time.sleep(1)
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