AD7927: 8Chael 200kSPS 12Bit SPI ADC

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u08 ad7927Init(void)

{

// initialize spi interface

spiInit();

// switch to f/4 bitrate

cbi(SPCR, SPR0);

cbi(SPCR, SPR1);

// setup chip select

sbi(AD7927_CS_PORT, AD7927_CS_PIN);

sbi(AD7927_CS_DDR, AD7927_CS_PIN);

// Set write bit, power mode normal, range 0-5V, coding straight binary

ad7927ctrlreg = (1<<AD7927_WRITE)|(1<<AD7927_PM1)|(1<<AD7927_PM0)|(1<<AD7927_CODING);

ad7927WriteCtrlReg(ad7927ctrlreg);

// return success

return 1;

}

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