ADS7809: 100kSPS 16Bit SPI ADC

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u08 ads7809Init(void)

{

// initialize spi interface

spiInit();

/* External DATACLK = 100kHz ~ 10MHz */

// switch to f/4 bitrate

cbi(SPCR, SPR0);

cbi(SPCR, SPR1); // SPI Clock Rate: 2MHz

// sbi(SPSR, SPI2X);

// setup clock

/*

If EXT/INT is HIGH, data will be output synchronized

to the clock input on DATACLK.

*/

sbi(ADS7809_CKS_DDR, ADS7809_CKS_PIN);

sbi(ADS7809_CKS_PORT, ADS7809_CKS_PIN); // External Clock

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