1 /* ----------------------------------------------------------------------------
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2 * SAM Software Package License
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3 * ----------------------------------------------------------------------------
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4 * Copyright (c) 2011, Atmel Corporation
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6 * All rights reserved.
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8 * Redistribution and use in source and binary forms, with or without
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9 * modification, are permitted provided that the following conditions are met:
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11 * - Redistributions of source code must retain the above copyright notice,
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12 * this list of conditions and the disclaimer below.
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14 * Atmel's name may not be used to endorse or promote products derived from
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15 * this software without specific prior written permission.
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17 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
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18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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20 * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
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21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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23 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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24 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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25 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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26 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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27 * ----------------------------------------------------------------------------
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35 * This module provides several definitions and methods for using an USART
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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 availability of data can be polled
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47 * with USART_IsDataAvailable.
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48 * -# Disable the transmitter and/or the receiver of the USART with
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49 * USART_SetTransmitterEnabled and USART_SetReceiverEnabled.
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55 /*------------------------------------------------------------------------------
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57 *------------------------------------------------------------------------------*/
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63 /*------------------------------------------------------------------------------
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65 *------------------------------------------------------------------------------*/
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67 /** \section USART_mode USART modes
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68 * This section lists several common operating modes for an USART peripheral.
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71 * - USART_MODE_ASYNCHRONOUS
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75 /** Basic asynchronous mode, i.e. 8 bits no parity.*/
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76 #define USART_MODE_ASYNCHRONOUS (US_MR_CHRL_8_BIT | US_MR_PAR_NO)
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79 #define USART_MODE_IRDA \
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80 (US_MR_USART_MODE_IRDA | US_MR_CHRL_8_BIT | US_MR_PAR_NO | US_MR_FILTER)
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83 #define AT91C_US_USMODE_SPIM 0xE
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84 #define US_SPI_CPOL_0 (0x0<<16)
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85 #define US_SPI_CPHA_0 (0x0<<8)
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86 #define US_SPI_CPOL_1 (0x1<<16)
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87 #define US_SPI_CPHA_1 (0x1<<8)
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88 #define US_SPI_BPMODE_0 (US_SPI_CPOL_0|US_SPI_CPHA_1)
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89 #define US_SPI_BPMODE_1 (US_SPI_CPOL_0|US_SPI_CPHA_0)
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90 #define US_SPI_BPMODE_2 (US_SPI_CPOL_1|US_SPI_CPHA_1)
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91 #define US_SPI_BPMODE_3 (US_SPI_CPOL_1|US_SPI_CPHA_0)
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97 /*------------------------------------------------------------------------------*/
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98 /* Exported functions */
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99 /*------------------------------------------------------------------------------*/
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101 extern void USART_Configure( Usart *pUsart, uint32_t mode, uint32_t baudrate, uint32_t masterClock ) ;
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102 extern uint32_t USART_GetStatus( Usart *usart ) ;
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103 extern void USART_EnableIt( Usart *usart,uint32_t mode ) ;
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104 extern void USART_DisableIt( Usart *usart,uint32_t mode ) ;
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105 extern uint32_t USART_GetItMask( Usart * usart ) ;
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106 extern void USART_SetTransmitterEnabled( Usart *usart, uint8_t enabled ) ;
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108 extern void USART_SetReceiverEnabled( Usart *usart, uint8_t enabled ) ;
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110 extern void USART_SetRTSEnabled(Usart *usart, uint8_t enabled);
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112 extern void USART_Write( Usart *usart, uint16_t data, volatile uint32_t timeOut ) ;
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114 extern uint16_t USART_Read( Usart *usart, volatile uint32_t timeOut ) ;
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116 extern uint8_t USART_IsDataAvailable( Usart *usart ) ;
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118 extern void USART_SetIrdaFilter(Usart *pUsart, uint8_t filter);
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120 extern void USART_PutChar( Usart *usart, uint8_t c ) ;
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122 extern uint32_t USART_IsRxReady( Usart *usart ) ;
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124 extern uint8_t USART_GetChar( Usart *usart ) ;
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130 #endif /* #ifndef _USART_ */
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