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29 * Copyright 2008 Develer S.r.l. (http://www.develer.com/)
35 * \brief ADC hardware-specific definition
38 * \author Daniele Basile <asterix@develer.com>
41 #ifndef DRV_ADC_AT91_H
42 #define DRV_ADC_AT91_H
44 #include <cfg/compiler.h>
47 #include "appconfig.h"
52 #define ADC_MUX_MAXCH 8 //Max number of channel for ADC.
53 #define ADC_BITS 10 //Bit resolution for ADC converter.
56 * Macro for computing correct value to write into ADC
59 #define ADC_COMPUTED_PRESCALER ((CLOCK_FREQ/(2 * CONFIG_ADC_CLOCK)) - 1)
60 #define ADC_COMPUTED_STARTUPTIME (((CONFIG_ADC_STARTUP_TIME * CONFIG_ADC_CLOCK)/ 8000000UL) - 1)
61 #define ADC_COMPUTED_SHTIME (((CONFIG_ADC_SHTIME * CONFIG_ADC_CLOCK)/1000000000UL) - 1)
64 * Init pins macro for adc.
68 * Define PIO controller for enable ADC function.
71 #if CPU_ARM_AT91SAM7X256
72 #define ADC_PIO_DISABLE PIOB_PDR
73 #define ADC_PIO_EN_FUNC PIOB_ASR
75 #elif CPU_ARM_AT91SAM7S256
76 #define ADC_PIO_DISABLE PIOA_PDR
77 #define ADC_PIO_EN_FUNC PIOA_BSR
80 #error No ADC pins name definitions for selected ARM CPU
86 * Implement it if necessary.
88 #define ADC_INIT_PINS() \
93 #endif /* DRV_ADC_AT91_H */