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Diffstat (limited to 'peripherals/adc/adc12.h')
| -rw-r--r-- | peripherals/adc/adc12.h | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/peripherals/adc/adc12.h b/peripherals/adc/adc12.h new file mode 100644 index 0000000..5a854aa --- /dev/null +++ b/peripherals/adc/adc12.h @@ -0,0 +1,142 @@ +/* ----------------------------------------------------------------------------
+ * 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 ADC12_CHANNEL_0 0
+#define ADC12_CHANNEL_1 1
+#define ADC12_CHANNEL_2 2
+#define ADC12_CHANNEL_3 3
+#define ADC12_CHANNEL_4 4
+#define ADC12_CHANNEL_5 5
+#define ADC12_CHANNEL_6 6
+#define ADC12_CHANNEL_7 7
+
+//------------------------------------------------------------------------------
+// Macros function of register access
+//------------------------------------------------------------------------------
+#define ADC12_CfgModeReg(pAdc, mode) { \
+ ASSERT(((mode)&0xF00000C0)== 0, "ADC Bad configuration ADC MR");\
+ (pAdc)->ADC12B_MR = (mode);\
+ }
+
+#define ADC12_GetModeReg(pAdc) ((pAdc)->ADC12B_MR)
+
+#define ADC12_StartConversion(pAdc) ((pAdc)->ADC12B_CR = AT91C_ADC_START)
+
+#define ADC12_SoftReset(pAdc) ((pAdc)->ADC12B_CR = AT91C_ADC_SWRST)
+
+#define ADC12_EnableChannel(pAdc, channel) {\
+ ASSERT(channel < 8, "ADC Channel not exist");\
+ (pAdc)->ADC12B_CHER = (1 << (channel));\
+ }
+
+#define ADC12_DisableChannel (pAdc, channel) {\
+ ASSERT((channel) < 8, "ADC Channel not exist");\
+ (pAdc)->ADC12B_CHDR = (1 << (channel));\
+ }
+
+#define ADC12_EnableIt(pAdc, mode) {\
+ ASSERT(((mode)&0xFFF00000)== 0, "ADC bad interrupt IER");\
+ (pAdc)->ADC12B_IER = (mode);\
+ }
+
+#define ADC12_DisableIt(pAdc, mode) {\
+ ASSERT(((mode)&0xFFF00000)== 0, "ADC bad interrupt IDR");\
+ (pAdc)->ADC12B_IDR = (mode);\
+ }
+
+#define ADC12_EnableDataReadyIt(pAdc) ((pAdc)->ADC12B_IER = AT91C_ADC_DRDY)
+
+#define ADC12_GetStatus(pAdc) ((pAdc)->ADC12B_SR)
+
+#define ADC12_GetChannelStatus(pAdc) ((pAdc)->ADC12B_CHSR)
+
+#define ADC12_GetInterruptMaskStatus(pAdc) ((pAdc)->ADC12B_IMR)
+
+#define ADC12_GetLastConvertedData(pAdc) ((pAdc)->ADC12B_LCDR)
+
+#define ADC12_CfgAnalogCtrlReg(pAdc,mode) {\
+ ASSERT(((mode) & 0xFFFCFF3C)==0, "ADC bad analog control config");\
+ (pAdc)->ADC12B_ACR = (mode);\
+ }
+
+#define ADC12_CfgExtModeReg(pAdc, extmode) {\
+ ASSERT(((extmode) & 0xFF00FFFE)==0, "ADC bad extended mode config");\
+ (pAdc)->ADC12B_EMR = (extmode);\
+ }
+
+#define ADC12_GetAnalogCtrlReg(pAdc) ((pAdc)->ADC12B_ACR)
+
+//------------------------------------------------------------------------------
+// Exported functions
+//------------------------------------------------------------------------------
+extern void ADC12_Initialize (AT91S_ADC12B *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_ADC12B *pAdc, unsigned int channel);
+extern unsigned int ADC12_IsInterruptMasked(AT91S_ADC12B *pAdc, unsigned int flag);
+extern unsigned int ADC12_IsStatusSet(AT91S_ADC12B *pAdc, unsigned int flag);
+extern unsigned char ADC12_IsChannelInterruptStatusSet(unsigned int adc_sr,
+ unsigned int channel);
+
+#endif //#ifndef ADC12_H
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