adc.h

00001 #ifndef ADC_H
00002 #define ADC_H
00003 
00004 #define SPI_NO_BITS_PER_FRAME 8
00005 
00006 #define SPI_CLOCK_POLARITY    0
00007 #define SPI_PHASE_MODE        0
00008 #define SPI_CLOCK_PHASE   (SPI_CLOCK_POLARITY << 1 | SPI_PHASE_MODE)
00009 
00010 #define SPI_FREQUENCY    400000
00011 
00012 #define SPI_MAX_SYNC_TRYS    19
00013 
00014 #define SPI_CONF_DELAY      0.2
00015 
00016 /* Math coefficients. */
00017 #define ADC_R             8.31451
00018 #define ADC_F             96487.0
00019 #define ADC_dEdT -0.0011012283386
00020 
00021 #define MAX_CONF_PIN_CHECKS 21
00022 #define MAX_PIN_CHECKS 201
00023 
00024 /*
00025  * Init analog to digital communication and config ADC(analog to digital converter)
00026 */
00027 void adcInit();
00028 
00029 /*
00030  * Get data from analog to digital converter.
00031  * For calculation are used the following extern variables:
00032  * A, B, C, D, PHTEMPF, EOSINGLEPT.
00033  * All received data will be written to the extern variables:
00034  * PHTEMP, pH, pHNoGain, pHCorrected, pHT.
00035 */
00036 void adcGetData();
00037 
00038 #endif