kopia lustrzana https://github.com/micropython/micropython
148 wiersze
3.7 KiB
Python
148 wiersze
3.7 KiB
Python
"""
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SPI test for the CC3200 based boards.
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"""
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from machine import SPI
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import os
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mch = os.uname().machine
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if "LaunchPad" in mch:
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spi_pins = ("GP14", "GP16", "GP30")
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elif "WiPy" in mch:
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spi_pins = ("GP14", "GP16", "GP30")
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else:
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raise Exception("Board not supported!")
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spi = SPI(0, SPI.MASTER, baudrate=2000000, polarity=0, phase=0, firstbit=SPI.MSB, pins=spi_pins)
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print(spi)
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spi = SPI(baudrate=5000000)
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print(spi)
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spi = SPI(0, SPI.MASTER, baudrate=200000, bits=16, polarity=0, phase=0)
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print(spi)
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spi = SPI(0, SPI.MASTER, baudrate=10000000, polarity=0, phase=1)
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print(spi)
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spi = SPI(0, SPI.MASTER, baudrate=5000000, bits=32, polarity=1, phase=0)
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print(spi)
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spi = SPI(0, SPI.MASTER, baudrate=10000000, polarity=1, phase=1)
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print(spi)
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spi.init(baudrate=20000000, polarity=0, phase=0)
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print(spi)
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spi = SPI()
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print(spi)
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SPI(mode=SPI.MASTER)
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SPI(mode=SPI.MASTER, pins=spi_pins)
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SPI(id=0, mode=SPI.MASTER, polarity=0, phase=0, pins=("GP14", "GP16", "GP15"))
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SPI(0, SPI.MASTER, polarity=0, phase=0, pins=("GP31", "GP16", "GP15"))
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spi = SPI(0, SPI.MASTER, baudrate=10000000, polarity=0, phase=0, pins=spi_pins)
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print(spi.write("123456") == 6)
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buffer_r = bytearray(10)
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print(spi.readinto(buffer_r) == 10)
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print(spi.readinto(buffer_r, write=0x55) == 10)
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read = spi.read(10)
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print(len(read) == 10)
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read = spi.read(10, write=0xFF)
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print(len(read) == 10)
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buffer_w = bytearray([1, 2, 3, 4, 5, 6, 7, 8, 9, 0])
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print(spi.write_readinto(buffer_w, buffer_r) == 10)
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print(buffer_w == buffer_r)
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# test all polaritiy and phase combinations
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spi.init(polarity=1, phase=0, pins=None)
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buffer_r = bytearray(10)
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spi.write_readinto(buffer_w, buffer_r)
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print(buffer_w == buffer_r)
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spi.init(polarity=1, phase=1, pins=None)
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buffer_r = bytearray(10)
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spi.write_readinto(buffer_w, buffer_r)
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print(buffer_w == buffer_r)
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spi.init(polarity=0, phase=1, pins=None)
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buffer_r = bytearray(10)
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spi.write_readinto(buffer_w, buffer_r)
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print(buffer_w == buffer_r)
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# test 16 and 32 bit transfers
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buffer_w = bytearray([1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2])
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buffer_r = bytearray(12)
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spi.init(SPI.MASTER, baudrate=10000000, bits=16, polarity=0, phase=0, pins=None)
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print(spi.write_readinto(buffer_w, buffer_r) == 12)
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print(buffer_w == buffer_r)
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buffer_r = bytearray(12)
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spi.init(SPI.MASTER, baudrate=10000000, bits=32, polarity=0, phase=0, pins=None)
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print(spi.write_readinto(buffer_w, buffer_r) == 12)
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print(buffer_w == buffer_r)
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# check for memory leaks...
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for i in range(0, 1000):
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spi = SPI(0, SPI.MASTER, baudrate=1000000)
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# test deinit
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spi = SPI(0, SPI.MASTER, baudrate=1000000)
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spi.deinit()
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print(spi)
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spi = SPI(0, SPI.MASTER, baudrate=1000000)
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# next ones must fail
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try:
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spi = SPI(0, 10, baudrate=10000000, polarity=0, phase=0)
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except:
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print("Exception")
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try:
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spi = SPI(0, mode=SPI.MASTER, baudrate=10000000, polarity=1, phase=2)
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except:
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print("Exception")
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try:
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spi = SPI(1, mode=SPI.MASTER, baudrate=10000000, polarity=1, phase=1)
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except:
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print("Exception")
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try:
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spi = SPI(0, mode=SPI.MASTER, baudrate=2000000, polarity=2, phase=0)
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except:
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print("Exception")
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try:
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spi = SPI(0, mode=SPI.MASTER, baudrate=2000000, polarity=2, phase=0, firstbit=2)
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except:
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print("Exception")
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try:
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spi = SPI(0, mode=SPI.MASTER, baudrate=2000000, polarity=2, phase=0, pins=("GP1", "GP2"))
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except:
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print("Exception")
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try:
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spi = SPI(0, mode=SPI.MASTER, baudrate=2000000, polarity=0, phase=0, bits=9)
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except:
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print("Exception")
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spi.deinit()
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try:
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spi.read(15)
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except Exception:
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print("Exception")
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try:
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spi.spi.readinto(buffer_r)
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except Exception:
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print("Exception")
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try:
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spi.spi.write("abc")
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except Exception:
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print("Exception")
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try:
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spi.write_readinto(buffer_w, buffer_r)
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except Exception:
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print("Exception")
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# reinitialization must work
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spi.init(baudrate=500000)
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print(spi)
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