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Diffstat (limited to 'peripherals/adc/adc.h')
| -rw-r--r-- | peripherals/adc/adc.h | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/peripherals/adc/adc.h b/peripherals/adc/adc.h new file mode 100644 index 0000000..331ceae --- /dev/null +++ b/peripherals/adc/adc.h @@ -0,0 +1,145 @@ +/* ----------------------------------------------------------------------------
+ * 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 ADC_H
+#define ADC_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 ADC_CfgModeReg(pAdc, mode) { \
+ ASSERT(((mode)&0xF00000C0)== 0, "ADC Bad configuration ADC MR");\
+ (pAdc)->ADC_MR = (mode);\
+ }
+
+#define ADC_GetModeReg(pAdc) ((pAdc)->ADC_MR)
+
+#define ADC_StartConversion(pAdc) ((pAdc)->ADC_CR = AT91C_ADC_START)
+
+#define ADC_SoftReset(pAdc) ((pAdc)->ADC_CR = AT91C_ADC_SWRST)
+
+#define ADC_EnableChannel(pAdc, channel) {\
+ ASSERT(channel < 8, "ADC Channel not exist");\
+ (pAdc)->ADC_CHER = (1 << (channel));\
+ }
+
+#define ADC_DisableChannel (pAdc, channel) {\
+ ASSERT((channel) < 8, "ADC Channel not exist");\
+ (pAdc)->ADC_CHDR = (1 << (channel));\
+ }
+
+
+#define ADC_EnableIt(pAdc, mode) {\
+ ASSERT(((mode)&0xFFF00000)== 0, "ADC bad interrupt IER");\
+ (pAdc)->ADC_IER = (mode);\
+ }
+
+#define ADC_DisableIt(pAdc, mode) {\
+ ASSERT(((mode)&0xFFF00000)== 0, "ADC bad interrupt IDR");\
+ (pAdc)->ADC_IDR = (mode);\
+ }
+
+#define ADC_EnableDataReadyIt(pAdc) ((pAdc)->ADC_IER = AT91C_ADC_DRDY)
+
+#define ADC_GetStatus(pAdc) ((pAdc)->ADC_SR)
+
+#define ADC_GetChannelStatus(pAdc) ((pAdc)->ADC_CHSR)
+
+#define ADC_GetInterruptMaskStatus(pAdc) ((pAdc)->ADC_IMR)
+
+#define ADC_GetLastConvertedData(pAdc) ((pAdc)->ADC_LCDR)
+
+
+//------------------------------------------------------------------------------
+// Exported functions
+//------------------------------------------------------------------------------
+extern void ADC_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 void ADC_CfgModeReg(AT91S_ADC *pAdc, unsigned int mode);
+//extern unsigned int ADC_GetModeReg(AT91S_ADC *pAdc);
+//extern void ADC_EnableChannel(AT91S_ADC *pAdc, unsigned int channel);
+//extern void ADC_DisableChannel (AT91S_ADC *pAdc, unsigned int channel);
+//extern unsigned int ADC_GetChannelStatus(AT91S_ADC *pAdc);
+//extern void ADC_StartConversion(AT91S_ADC *pAdc);
+//extern void ADC_SoftReset(AT91S_ADC *pAdc);
+//extern unsigned int ADC_GetLastConvertedData(AT91S_ADC *pAdc);
+extern unsigned int ADC_GetConvertedData(AT91S_ADC *pAdc, unsigned int channel);
+//extern void ADC_EnableIt(AT91S_ADC *pAdc, unsigned int flag);
+//extern void ADC_EnableDataReadyIt(AT91S_ADC *pAdc);
+//extern void ADC_DisableIt(AT91S_ADC *pAdc, unsigned int flag);
+//extern unsigned int ADC_GetStatus(AT91S_ADC *pAdc);
+//extern unsigned int ADC_GetInterruptMaskStatus(AT91S_ADC *pAdc);
+extern unsigned int ADC_IsInterruptMasked(AT91S_ADC *pAdc, unsigned int flag);
+extern unsigned int ADC_IsStatusSet(AT91S_ADC *pAdc, unsigned int flag);
+extern unsigned char ADC_IsChannelInterruptStatusSet(unsigned int adc_sr,
+ unsigned int channel);
+
+#endif //#ifndef ADC_H
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