/* ---------------------------------------------------------------------------- | |
* ATMEL Microcontroller Software Support | |
* ---------------------------------------------------------------------------- | |
* Copyright (c) 2009, 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 | |
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE | |
* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, | |
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, | |
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* ---------------------------------------------------------------------------- | |
*/ | |
/** | |
* \file | |
* | |
* \par Purpose | |
* | |
* This module provides several definitions and methods for using an USART | |
* peripheral. | |
* | |
* \par Usage | |
* | |
* -# Enable the USART peripheral clock in the PMC. | |
* -# Enable the required USART PIOs (see pio.h). | |
* -# Configure the UART by calling USART_Configure. | |
* -# Enable the transmitter and/or the receiver of the USART using | |
* USART_SetTransmitterEnabled and USART_SetReceiverEnabled. | |
* -# Send data through the USART using the USART_Write and | |
* USART_WriteBuffer methods. | |
* -# Receive data from the USART using the USART_Read and | |
* USART_ReadBuffer functions; the availability of data can be polled | |
* with USART_IsDataAvailable. | |
* -# Disable the transmitter and/or the receiver of the USART with | |
* USART_SetTransmitterEnabled and USART_SetReceiverEnabled. | |
*/ | |
#ifndef _USART_ | |
#define _USART_ | |
/*------------------------------------------------------------------------------ | |
* Headers | |
*------------------------------------------------------------------------------*/ | |
#include "chip.h" | |
#include <stdint.h> | |
/*------------------------------------------------------------------------------ | |
* Definitions | |
*------------------------------------------------------------------------------*/ | |
/** \section USART_mode USART modes | |
* This section lists several common operating modes for an USART peripheral. | |
* | |
* \b Modes | |
* - USART_MODE_ASYNCHRONOUS | |
* - USART_MODE_IRDA | |
*/ | |
/** Basic asynchronous mode, i.e. 8 bits no parity.*/ | |
#define USART_MODE_ASYNCHRONOUS (US_MR_CHRL_8_BIT | US_MR_PAR_NO) | |
/** IRDA mode*/ | |
#define USART_MODE_IRDA (AT91C_US_USMODE_IRDA | AT91C_US_CHRL_8_BITS | AT91C_US_PAR_NONE | AT91C_US_FILTER) | |
/** SPI mode*/ | |
#define AT91C_US_USMODE_SPIM 0xE | |
#define US_SPI_CPOL_0 (0x0<<16) | |
#define US_SPI_CPHA_0 (0x0<<8) | |
#define US_SPI_CPOL_1 (0x1<<16) | |
#define US_SPI_CPHA_1 (0x1<<8) | |
#define US_SPI_BPMODE_0 (US_SPI_CPOL_0|US_SPI_CPHA_1) | |
#define US_SPI_BPMODE_1 (US_SPI_CPOL_0|US_SPI_CPHA_0) | |
#define US_SPI_BPMODE_2 (US_SPI_CPOL_1|US_SPI_CPHA_1) | |
#define US_SPI_BPMODE_3 (US_SPI_CPOL_1|US_SPI_CPHA_0) | |
#ifdef __cplusplus | |
extern "C" { | |
#endif | |
/*------------------------------------------------------------------------------*/ | |
/* Exported functions */ | |
/*------------------------------------------------------------------------------*/ | |
extern void USART_Configure( Usart *usart, uint32_t mode, uint32_t baudrate, uint32_t masterClock ) ; | |
extern uint32_t USART_GetStatus( Usart *usart ) ; | |
extern void USART_EnableIt( Usart *usart,uint32_t mode ) ; | |
extern void USART_DisableIt( Usart *usart,uint32_t mode ) ; | |
extern void USART_SetTransmitterEnabled( Usart *usart, uint8_t enabled ) ; | |
extern void USART_SetReceiverEnabled( Usart *usart, uint8_t enabled ) ; | |
extern void USART_Write( Usart *usart, uint16_t data, volatile uint32_t timeOut ) ; | |
extern uint8_t USART_WriteBuffer( Usart *usart, void *buffer, uint32_t size ) ; | |
extern uint16_t USART_Read( Usart *usart, volatile uint32_t timeOut ) ; | |
extern uint8_t USART_ReadBuffer( Usart *usart, void *buffer, uint32_t size ) ; | |
extern uint8_t USART_IsDataAvailable( Usart *usart ) ; | |
extern void USART_SetIrdaFilter(Usart *pUsart, uint8_t filter); | |
extern void USART_PutChar( Usart *usart, uint8_t c ) ; | |
extern uint32_t USART_IsRxReady( Usart *usart ) ; | |
extern uint8_t USART_GetChar( Usart *usart ) ; | |
#ifdef __cplusplus | |
} | |
#endif | |
#endif /* #ifndef _USART_ */ | |