i2cAccel.py 文件源码

def initAccel(address):
    global i2cBus
    i2cBus = smbus.SMBus(BUS_NUMBER)
    # init
    i2cBus.write_i2c_block_data(address, 0x2d, [0x00,])
    # range = +-2g, Left Justify, 10-bit mode(but will ignore tha right 2-bit)
    i2cBus.write_i2c_block_data(address, 0x31, [0x04,])
    # setings for tap (values are from data sheet)
    i2cBus.write_i2c_block_data(address, 0x1d, [0x60,])
    i2cBus.write_i2c_block_data(address, 0x21, [0x20,])
    i2cBus.write_i2c_block_data(address, 0x22, [0x20,])
    i2cBus.write_i2c_block_data(address, 0x23, [0x80,])
    # enable tap detection
    i2cBus.write_i2c_block_data(address, 0x2a, [0x07,])
    i2cBus.write_i2c_block_data(address, 0x2e, [0x60,])
    # start measurement
    i2cBus.write_i2c_block_data(address, 0x2d, [0x08,])