33 lines
657 B
Python
33 lines
657 B
Python
import pyb
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from pyb import I2C
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# test we can correctly create by id or name
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for bus in (-1, 0, 1, 2, 3, "X", "Y", "Z"):
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try:
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I2C(bus)
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print("I2C", bus)
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except ValueError:
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print("ValueError", bus)
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i2c = I2C(1)
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i2c.init(I2C.MASTER, baudrate=400000)
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print(i2c.scan())
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i2c.deinit()
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# use accelerometer to test i2c bus
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accel_addr = 76
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pyb.Accel() # this will init the MMA for us
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i2c.init(I2C.MASTER, baudrate=400000)
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print(i2c.scan())
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print(i2c.is_ready(accel_addr))
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print(i2c.mem_read(1, accel_addr, 7, timeout=500))
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i2c.mem_write(0, accel_addr, 0, timeout=500)
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i2c.send(7, addr=accel_addr)
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i2c.recv(1, addr=accel_addr)
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