Cirrus Logic AN118 - Manual (Page 15)

AN118
AN118REV2 15
case 0x11: /* Offset Register Physical Channel 2 */
case 0x21: /* Offset Register Physical Channel 3 */
case 0x31: /* Offset Register Physical Channel 4 */
case 0x41: /* Offset Register Physical Channel 5 */
case 0x51: /* Offset Register Physical Channel 6 */
case 0x61: /* Offset Register Physical Channel 7 */
case 0x71: /* Offset Register Physical Channel 8 */
case 0x02: /* Gain Register Physical Channel 1 */
case 0x12: /* Gain Register Physical Channel 2 */
case 0x22: /* Gain Register Physical Channel 3 */
case 0x32: /* Gain Register Physical Channel 4 */
case 0x42: /* Gain Register Physical Channel 5 */
case 0x52: /* Gain Register Physical Channel 6 */
case 0x62: /* Gain Register Physical Channel 7 */
case 0x72: /* Gain Register Physical Channel 8 */
case 0x03: /* Configuration Register */
low_byte = RXSER(); /*Receive data low byte first*/
mid_byte = RXSER();
high_byte = RXSER();
COMM = 0x00; /* Turn on LED */
Delay();
COMM = 0x01;
/* Turn off LED */
write_to_register(command,low_byte,mid_byte,high_byte);
break;
/*****************************/
/* Write Channel-Setup Registers */
/*****************************/
case 0x05:
COMM = 0x00; /* Turn on LED*/
sample_size = RXSER(); /* How many Registers? */
if(mode == 1) P1 = 0xF4; /* Clear CSb */
transfer_byte(command); /* Send command to A/D */
for (j=0; j
low_byte = RXSER(); /* Receive Data */
mid_byte = RXSER();
high_byte = RXSER();
transfer_byte(high_byte);
/* Transfer Data to A/D */
transfer_byte(mid_byte);
transfer_byte(low_byte);
} /* END for loop */
if(mode == 1) P1 = 0xF5;
/* Set CSb */
COMM = 0x01; /* Turn off LED*/
break;