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tsc2007.c里的问题

Other Parts Discussed in Thread: TSC2007, AM3354

tsc2007.c里的

static inline int tsc2007_xfer(struct tsc2007 *tsc, u8 cmd)

函数中

data = i2c_smbus_read_word_data(tsc->client, cmd);

这里的cmd是0, 发出去的波形是这样的为什么后面的数据和始终怎么没了??????