fb49de922c91,045

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(OCR text)

SMBusDread word

i2c_smbus_read_word_dat a()

SMBus Read Word:

This operat ion is very like Read Byte; again, dat a is read from a

device, from a designated register that is specif ied through the Comm

byt e. But this time, the data is a complete word (16 bits).

S Addr Wr A Comm A S Addr Rd A Dat aLow A Dat aHigh NA P

Funct ionality flag: 120 F UNC_SMBUS_READ_WORD_DATA

Note the convenience function i2c_smbus_read_word_swapped is

available for reads where the two dat a bytes are the ot her way

around (not SMBus compl iant, but very popular.)

先に読みたいレジスタのアドレスをWriteし、

そこから2バイトReadする。