osd-contiki/cpu/pic32/lib/pic32_uart.h
2012-12-21 12:36:29 +01:00

126 lines
4.3 KiB
C

/*
* Contiki PIC32 Port project
*
* Copyright (c) 2012,
* Scuola Superiore Sant'Anna (http://www.sssup.it) and
* Consorzio Nazionale Interuniversitario per le Telecomunicazioni
* (http://www.cnit.it).
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS 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.
*
*/
/**
* \addtogroup pic32 PIC32 Contiki Port
*
* @{
*/
/**
* \file pic32_uart.h
* \brief UART Interface for PIC32MX (pic32mx795f512l)
* \author Giovanni Pellerano <giovanni.pellerano@evilaliv3.org>
* \date 2012-03-21
*/
/*
* PIC32MX795F512L - Specific Functions
*
* All the functions in this part of the file are specific for the
* pic32mx795f512l that is characterized by registers' name that differ from
* the 3xx and 4xx families of the pic32mx.
*/
#ifndef __INCLUDE_PIC32_UART_H__
#define __INCLUDE_PIC32_UART_H__
#ifdef __USE_UART__
#include <pic32_irq.h>
#include <p32xxxx.h>
#include <stdint.h>
#define BAUD2UBR(x) x
/* Returned Messages */
#define UART_NO_ERROR 0
#define UART_ERR_NO_DATA 1
#define UART_ERR_OVERFLOW 2
#define UART_PORT_DEF(XX) \
int8_t pic32_uart##XX##_init(uint32_t baudrate, uint16_t byte_format); \
int8_t pic32_uart##XX##_write(uint8_t data);
#define UART_INTERRUPT(XX, Y, CALLBACK) \
ISR(_UART_##XX##_VECTOR) \
{ \
volatile uint8_t byte; \
if(IFS##Y##bits.U##XX##RXIF) { \
if((U##XX##STAbits.PERR == 0) && (U##XX##STAbits.FERR == 0)) { \
CALLBACK(U##XX##RXREG); \
} else { \
byte = U##XX##RXREG; /* NULL READ */ \
} \
IFS##Y##CLR = _IFS##Y##_U##XX##RXIF_MASK; \
} \
if(U##XX##STAbits.OERR) { \
U##XX##STACLR = _U##XX##STA_OERR_MASK; \
} \
}
#ifdef __USE_UART_PORT1A__
UART_PORT_DEF(1A)
#endif /* __USE_UART_PORT1A__ */
#ifdef __USE_UART_PORT1B__
UART_PORT_DEF(1B)
#endif /* __USE_UART_PORT1B__ */
#ifdef __USE_UART_PORT2A__
UART_PORT_DEF(2A)
#endif /* __USE_UART_PORT2A__ */
#ifdef __USE_UART_PORT2B__
UART_PORT_DEF(2B)
#endif /* __USE_UART_PORT2B__ */
#ifdef __USE_UART_PORT3A__
UART_PORT_DEF(3A)
#endif /* __USE_UART_PORT3A__ */
#ifdef __USE_UART_PORT3B__
UART_PORT_DEF(3B)
#endif /* __USE_UART_PORT3B__ */
#endif /* __USE_UART__ */
#endif /* __INCLUDE_PIC32_UART_H__ */
/** @} */