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 | * \par Purpose |
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34 | * |
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35 | * This module provides several definitions and methods for using an USART |
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36 | * peripheral. |
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37 | * |
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38 | * \par Usage |
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39 | * |
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40 | * -# Enable the USART peripheral clock in the PMC. |
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41 | * -# Enable the required USART PIOs (see pio.h). |
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42 | * -# Configure the UART by calling USART_Configure. |
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43 | * -# Enable the transmitter and/or the receiver of the USART using |
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44 | * USART_SetTransmitterEnabled and USART_SetReceiverEnabled. |
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45 | * -# Send data through the USART using the USART_Write methods. |
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46 | * -# Receive data from the USART using the USART_Read functions; the |
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47 | * availability of data can be polled |
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48 | * with USART_IsDataAvailable. |
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49 | * -# Disable the transmitter and/or the receiver of the USART with |
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50 | * USART_SetTransmitterEnabled and USART_SetReceiverEnabled. |
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51 | */ |
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52 | |
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53 | #ifndef _USART_ |
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54 | #define _USART_ |
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55 | |
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56 | /*------------------------------------------------------------------------------ |
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57 | * Headers |
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58 | *----------------------------------------------------------------------------*/ |
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59 | |
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60 | #include "chip.h" |
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61 | |
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62 | #include <stdint.h> |
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63 | |
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64 | /*------------------------------------------------------------------------------ |
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65 | * Definitions |
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66 | *----------------------------------------------------------------------------*/ |
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67 | |
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68 | /** \section USART_mode USART modes |
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69 | * This section lists several common operating modes for an USART peripheral. |
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70 | * |
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71 | * \b Modes |
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72 | * - USART_MODE_ASYNCHRONOUS |
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73 | * - USART_MODE_IRDA |
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74 | */ |
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75 | |
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76 | /** Basic asynchronous mode, i.e. 8 bits no parity.*/ |
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77 | #define USART_MODE_ASYNCHRONOUS (US_MR_CHRL_8_BIT | US_MR_PAR_NO) |
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78 | |
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79 | #define MAX_RX_TIMEOUT 131071 |
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80 | |
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81 | /** IRDA mode*/ |
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82 | #define USART_MODE_IRDA \ |
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83 | (US_MR_USART_MODE_IRDA | US_MR_CHRL_8_BIT | US_MR_PAR_NO | US_MR_FILTER) |
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84 | |
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85 | /** SPI mode*/ |
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86 | #define AT91C_US_USMODE_SPIM 0xE |
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87 | #define US_SPI_CPOL_0 (0x0<<16) |
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88 | #define US_SPI_CPHA_0 (0x0<<8) |
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89 | #define US_SPI_CPOL_1 (0x1<<16) |
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90 | #define US_SPI_CPHA_1 (0x1<<8) |
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91 | #define US_SPI_BPMODE_0 (US_SPI_CPOL_0|US_SPI_CPHA_1) |
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92 | #define US_SPI_BPMODE_1 (US_SPI_CPOL_0|US_SPI_CPHA_0) |
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93 | #define US_SPI_BPMODE_2 (US_SPI_CPOL_1|US_SPI_CPHA_1) |
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94 | #define US_SPI_BPMODE_3 (US_SPI_CPOL_1|US_SPI_CPHA_0) |
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95 | |
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96 | #ifdef __cplusplus |
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97 | extern "C" { |
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98 | #endif |
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99 | |
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100 | /*------------------------------------------------------------------------------*/ |
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101 | /* Exported functions */ |
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102 | /*------------------------------------------------------------------------------*/ |
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103 | |
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104 | |
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105 | void USART_Configure(Usart *pUsart, uint32_t mode, uint32_t baudrate, |
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106 | uint32_t masterClock); |
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107 | |
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108 | void USART_SetBaudrate(Usart *pUsart, uint8_t OverSamp, uint32_t baudrate, |
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109 | uint32_t masterClock); |
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110 | |
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111 | uint32_t USART_GetStatus(Usart *usart); |
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112 | |
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113 | |
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114 | void USART_ResetRx(Usart *pUsart); |
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115 | |
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116 | void USART_ResetTx(Usart *pUsart); |
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117 | |
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118 | void USART_EnableTx(Usart *pUsart); |
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119 | |
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120 | void USART_EnableRx(Usart *pUsart); |
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121 | |
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122 | void USART_DisableRx(Usart *pUsart); |
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123 | |
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124 | void USART_DisableTx(Usart *pUsart); |
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125 | |
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126 | void USART_EnableIt(Usart *usart, uint32_t mode); |
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127 | |
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128 | void USART_DisableIt(Usart *usart, uint32_t mode); |
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129 | |
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130 | uint32_t USART_GetItMask(Usart *usart); |
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131 | |
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132 | void USART_SetTransmitterEnabled(Usart *usart, uint8_t enabled); |
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133 | |
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134 | void USART_SetReceiverEnabled(Usart *usart, uint8_t enabled); |
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135 | |
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136 | void USART_SetRTSEnabled(Usart *usart, uint8_t enabled); |
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137 | |
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138 | void USART_Write(Usart *usart, uint16_t data, volatile uint32_t timeOut); |
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139 | |
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140 | uint16_t USART_Read(Usart *usart, volatile uint32_t timeOut); |
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141 | |
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142 | uint8_t USART_IsDataAvailable(Usart *usart); |
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143 | |
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144 | void USART_SetIrdaFilter(Usart *pUsart, uint8_t filter); |
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145 | |
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146 | void USART_PutChar(Usart *usart, uint8_t c); |
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147 | |
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148 | uint32_t USART_IsRxReady(Usart *usart); |
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149 | |
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150 | uint8_t USART_GetChar(Usart *usart); |
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151 | |
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152 | void USART_EnableRecvTimeOut(Usart *usart, uint32_t timeout); |
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153 | |
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154 | void USART_EnableTxTimeGaurd(Usart *pUsart, uint32_t TimeGaurd); |
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155 | |
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156 | void USART_AcknowledgeRxTimeOut(Usart *usart, uint8_t Periodic); |
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157 | |
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158 | |
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159 | #ifdef __cplusplus |
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160 | } |
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161 | #endif |
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162 | |
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163 | #endif /* #ifndef _USART_ */ |
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164 | |
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