1 | /* ---------------------------------------------------------------------------- */ |
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2 | /* Atmel Microcontroller Software Support */ |
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3 | /* SAM Software Package License */ |
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4 | /* ---------------------------------------------------------------------------- */ |
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5 | /* Copyright (c) 2015, Atmel Corporation */ |
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6 | /* */ |
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7 | /* All rights reserved. */ |
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8 | /* */ |
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9 | /* Redistribution and use in source and binary forms, with or without */ |
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10 | /* modification, are permitted provided that the following condition is met: */ |
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11 | /* */ |
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12 | /* - Redistributions of source code must retain the above copyright notice, */ |
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13 | /* this list of conditions and the disclaimer below. */ |
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14 | /* */ |
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15 | /* Atmel's name may not be used to endorse or promote products derived from */ |
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16 | /* this software without specific prior written permission. */ |
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17 | /* */ |
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18 | /* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR */ |
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19 | /* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */ |
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20 | /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE */ |
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21 | /* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, */ |
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22 | /* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT */ |
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23 | /* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, */ |
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24 | /* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF */ |
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25 | /* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING */ |
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26 | /* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, */ |
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27 | /* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ |
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28 | /* ---------------------------------------------------------------------------- */ |
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29 | |
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30 | /** |
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31 | * \file |
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32 | * |
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33 | * \section Purpose |
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34 | * |
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35 | * Interface for configuration the Analog-to-Digital Converter (ACC) peripheral. |
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36 | * |
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37 | * \section Usage |
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38 | * |
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39 | * -# Configurate the pins for ACC |
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40 | * -# Initialize the ACC with ACC_Initialize(). |
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41 | * -# Select the active channel using ACC_EnableChannel() |
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42 | * -# Start the conversion with ACC_StartConversion() |
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43 | * -# Wait the end of the conversion by polling status with ACC_GetStatus() |
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44 | * -# Finally, get the converted data using ACC_GetConvertedData() |
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45 | * |
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46 | */ |
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47 | #ifndef _ACC_ |
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48 | #define _ACC_ |
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49 | |
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50 | /*---------------------------------------------------------------------------- |
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51 | * Headers |
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52 | *----------------------------------------------------------------------------*/ |
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53 | #include "chip.h" |
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54 | |
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55 | #include <stdint.h> |
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56 | #include <assert.h> |
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57 | |
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58 | /*------------------------------------------------------------------------------ |
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59 | * Definitions |
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60 | *------------------------------------------------------------------------------*/ |
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61 | #define ACC_SELPLUS_AD12B0 0 |
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62 | #define ACC_SELPLUS_AD12B1 1 |
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63 | #define ACC_SELPLUS_AD12B2 2 |
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64 | #define ACC_SELPLUS_AD12B3 3 |
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65 | #define ACC_SELPLUS_AD12B4 4 |
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66 | #define ACC_SELPLUS_AD12B5 5 |
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67 | #define ACC_SELPLUS_AD12B6 6 |
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68 | #define ACC_SELPLUS_AD12B7 7 |
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69 | #define ACC_SELMINUS_TS 0 |
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70 | #define ACC_SELMINUS_ADVREF 1 |
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71 | #define ACC_SELMINUS_DAC0 2 |
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72 | #define ACC_SELMINUS_DAC1 3 |
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73 | #define ACC_SELMINUS_AD12B0 4 |
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74 | #define ACC_SELMINUS_AD12B1 5 |
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75 | #define ACC_SELMINUS_AD12B2 6 |
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76 | #define ACC_SELMINUS_AD12B3 7 |
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77 | |
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78 | #ifdef __cplusplus |
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79 | extern "C" { |
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80 | #endif |
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81 | |
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82 | /*------------------------------------------------------------------------------ |
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83 | * Macros function of register access |
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84 | *------------------------------------------------------------------------------*/ |
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85 | #define ACC_CfgModeReg(pAcc, mode) { \ |
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86 | (pAcc)->ACC_MR = (mode);\ |
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87 | } |
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88 | |
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89 | #define ACC_GetModeReg(pAcc) ((pAcc)->ACC_MR) |
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90 | |
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91 | #define ACC_StartConversion(pAcc) ((pAcc)->ACC_CR = ACC_CR_START) |
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92 | |
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93 | #define ACC_SoftReset(pAcc) ((pAcc)->ACC_CR = ACC_CR_SWRST) |
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94 | |
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95 | #define ACC_EnableChannel(pAcc, dwChannel) {\ |
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96 | assert(dwChannel < 16);\ |
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97 | (pAcc)->ACC_CHER = (1 << (dwChannel));\ |
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98 | } |
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99 | |
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100 | #define ACC_DisableChannel(pAcc, dwChannel) {\ |
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101 | assert(dwChannel < 16);\ |
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102 | (pAcc)->ACC_CHDR = (1 << (dwChannel));\ |
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103 | } |
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104 | |
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105 | #define ACC_EnableIt(pAcc, dwMode) {\ |
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106 | assert(((dwMode)&0xFFF00000)== 0);\ |
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107 | (pAcc)->ACC_IER = (dwMode);\ |
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108 | } |
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109 | |
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110 | #define ACC_DisableIt(pAcc, dwMode) {\ |
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111 | assert(((dwMode)&0xFFF00000)== 0);\ |
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112 | (pAcc)->ACC_IDR = (dwMode);\ |
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113 | } |
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114 | |
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115 | #define ACC_EnableDataReadyIt(pAcc) ((pAcc)->ACC_IER = AT91C_ACC_DRDY) |
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116 | |
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117 | #define ACC_GetStatus(pAcc) ((pAcc)->ACC_ISR) |
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118 | |
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119 | #define ACC_GetChannelStatus(pAcc) ((pAcc)->ACC_CHSR) |
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120 | |
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121 | #define ACC_GetInterruptMaskStatus(pAcc) ((pAcc)->ACC_IMR) |
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122 | |
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123 | #define ACC_GetLastConvertedData(pAcc) ((pAcc)->ACC_LCDR) |
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124 | |
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125 | #define ACC_CfgAnalogCtrlReg(pAcc, dwMode) {\ |
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126 | assert(((dwMode) & 0xFFFCFF3C) == 0);\ |
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127 | (pAcc)->ACC_ACR = (dwMode);\ |
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128 | } |
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129 | |
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130 | #define ACC_CfgExtModeReg(pAcc, extmode) {\ |
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131 | assert(((extmode) & 0xFF00FFFE) == 0);\ |
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132 | (pAcc)->ACC_EMR = (extmode);\ |
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133 | } |
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134 | |
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135 | #define ACC_GetAnalogCtrlReg(pAcc) ((pAcc)->ACC_ACR) |
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136 | |
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137 | /*------------------------------------------------------------------------------ |
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138 | * Exported functions |
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139 | *------------------------------------------------------------------------------*/ |
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140 | extern void ACC_Configure(Acc *pAcc, uint8_t idAcc, uint8_t ucSelplus, |
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141 | uint8_t ucSelminus, uint16_t wAc_en, uint16_t wEdge, uint16_t wInvert); |
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142 | |
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143 | extern void ACC_SetComparisonPair(Acc *pAcc, uint8_t ucSelplus, |
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144 | uint8_t ucSelminus); |
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145 | |
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146 | extern uint32_t ACC_GetComparisonResult(Acc *pAcc, uint32_t dwStatus); |
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147 | |
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148 | #ifdef __cplusplus |
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149 | } |
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150 | #endif |
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151 | |
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152 | #endif /* #ifndef _ACC_ */ |
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