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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [CORTEX_AT91SAM3U256_IAR/] [AT91Lib/] [peripherals/] [adc/] [adc12.h] - Rev 605
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/* ---------------------------------------------------------------------------- * ATMEL Microcontroller Software Support * ---------------------------------------------------------------------------- * Copyright (c) 2008, Atmel Corporation * * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the disclaimer below. * * Atmel's name may not be used to endorse or promote products derived from * this software without specific prior written permission. * * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ---------------------------------------------------------------------------- */ //------------------------------------------------------------------------------ /// \unit /// /// !Purpose /// /// Interface for configuration the Analog-to-Digital Converter (ADC) peripheral. /// /// !Usage /// /// -# Configurate the pins for ADC /// -# Initialize the ADC with ADC_Initialize(). /// -# Select the active channel using ADC_EnableChannel() /// -# Start the conversion with ADC_StartConversion() // -# Wait the end of the conversion by polling status with ADC_GetStatus() // -# Finally, get the converted data using ADC_GetConvertedData() /// //------------------------------------------------------------------------------ #ifndef ADC12_H #define ADC12_H //------------------------------------------------------------------------------ // Headers //------------------------------------------------------------------------------ #include <utility/assert.h> //------------------------------------------------------------------------------ // Definitions //------------------------------------------------------------------------------ #define ADC_CHANNEL_0 0 #define ADC_CHANNEL_1 1 #define ADC_CHANNEL_2 2 #define ADC_CHANNEL_3 3 #define ADC_CHANNEL_4 4 #define ADC_CHANNEL_5 5 #define ADC_CHANNEL_6 6 #define ADC_CHANNEL_7 7 //------------------------------------------------------------------------------ // Macros function of register access //------------------------------------------------------------------------------ #define ADC12_CfgModeReg(pAdc, mode) { \ ASSERT(((mode)&0xF00000C0)== 0, "ADC Bad configuration ADC MR");\ (pAdc)->ADC_MR = (mode);\ } #define ADC12_GetModeReg(pAdc) ((pAdc)->ADC_MR) #define ADC12_StartConversion(pAdc) ((pAdc)->ADC_CR = AT91C_ADC_START) #define ADC12_SoftReset(pAdc) ((pAdc)->ADC_CR = AT91C_ADC_SWRST) #define ADC12_EnableChannel(pAdc, channel) {\ ASSERT(channel < 8, "ADC Channel not exist");\ (pAdc)->ADC_CHER = (1 << (channel));\ } #define ADC12_DisableChannel (pAdc, channel) {\ ASSERT((channel) < 8, "ADC Channel not exist");\ (pAdc)->ADC_CHDR = (1 << (channel));\ } #define ADC12_EnableIt(pAdc, mode) {\ ASSERT(((mode)&0xFFF00000)== 0, "ADC bad interrupt IER");\ (pAdc)->ADC_IER = (mode);\ } #define ADC12_DisableIt(pAdc, mode) {\ ASSERT(((mode)&0xFFF00000)== 0, "ADC bad interrupt IDR");\ (pAdc)->ADC_IDR = (mode);\ } #define ADC12_EnableDataReadyIt(pAdc) ((pAdc)->ADC_IER = AT91C_ADC_DRDY) #define ADC12_GetStatus(pAdc) ((pAdc)->ADC_SR) #define ADC12_GetChannelStatus(pAdc) ((pAdc)->ADC_CHSR) #define ADC12_GetInterruptMaskStatus(pAdc) ((pAdc)->ADC_IMR) #define ADC12_GetLastConvertedData(pAdc) ((pAdc)->ADC_LCDR) #define ADC12_CfgAnalogCtrlReg(pAdc,mode) {\ ASSERT(((mode) & 0xFFFCFF3C)==0, "ADC bad analog control config");\ (pAdc)->ADC_ACR = (mode);\ } #define ADC12_CfgExtModeReg(pAdc, extmode) {\ ASSERT(((extmode) & 0xFF00FFFE)==0, "ADC bad extended mode config");\ (pAdc)->ADC_EMR = (extmode);\ } #define ADC12_GetAnalogCtrlReg(pAdc) ((pAdc)->ADC_ACR) //------------------------------------------------------------------------------ // Exported functions //------------------------------------------------------------------------------ extern void ADC12_Initialize (AT91S_ADC *pAdc, unsigned char idAdc, unsigned char trgEn, unsigned char trgSel, unsigned char sleepMode, unsigned char resolution, unsigned int mckClock, unsigned int adcClock, unsigned int startupTime, unsigned int sampleAndHoldTime); extern unsigned int ADC12_GetConvertedData(AT91S_ADC *pAdc, unsigned int channel); extern unsigned int ADC12_IsInterruptMasked(AT91S_ADC *pAdc, unsigned int flag); extern unsigned int ADC12_IsStatusSet(AT91S_ADC *pAdc, unsigned int flag); extern unsigned char ADC12_IsChannelInterruptStatusSet(unsigned int adc_sr, unsigned int channel); #endif //#ifndef ADC12_H
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