AD7715 Просмотр технического описания (PDF) - Analog Devices

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AD7715

3 V/5 V, 450 µA 16-Bit, Sigma-Delta ADC

Analog Devices 

PORTC &= 0xfb; /* /CS is low */

SPDR = byteword; /* put the byte into data register */

while(!(SPSR & 0x80)); /* wait for /DRDY to go low */

PORTC |= 0x4; /* /CS high */

}

Read(int amount, int reglength)

{

int q;

SPCR = 0x3f;

SPCR = 0x7f; /* clear the interrupt */

DDRD = 0x10; /* MOSI output, MISO input, SCK output */

while(PORTC & 0x10); /* wait for /DRDY to go low */

PORTC & 0xfb ; /* /CS is low */

for(b=0;b<reglength;b++)

{

SPDR = 0;

while(!(SPSR & 0x80)); /* wait until port ready before reading */

*datapointer++=SPDR; /* read SPDR into store array via datapointer */

}

PORTC|=4; /* /CS is high */

}

AD7715

Rev. D | Page 35 of 40

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