209 lines
7.6 KiB
C
209 lines
7.6 KiB
C
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/**************************************************************************
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* arch/arm/src/sam3u/sam3u_lowputc.c
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*
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* Copyright (C) 2010 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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**************************************************************************/
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/**************************************************************************
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* Included Files
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**************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <arch/irq.h>
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#include <arch/board/board.h>
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#include "up_internal.h"
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#include "up_arch.h"
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#include "sam3u_internal.h"
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#include "sam3u_pmc.h"
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/**************************************************************************
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* Private Definitions
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**************************************************************************/
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/* Configuration **********************************************************/
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#ifndef CONFIG_USART0_ISUART
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# undef CONFIG_SAM3U_USART0
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#endif
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#ifndef CONFIG_USART1_ISUART
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# undef CONFIG_SAM3U_USART1
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#endif
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#ifndef CONFIG_USART2_ISUART
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# undef CONFIG_SAM3U_USART2
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#endif
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#ifndef CONFIG_USART3_ISUART
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# undef CONFIG_SAM3U_USART3
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#endif
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/* Is there a serial console? It could be on the UART, or USARTn */
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#if defined(CONFIG_UART_SERIAL_CONSOLE) && defined(CONFIG_SAM3U_UART)
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# undef CONFIG_USART0_SERIAL_CONSOLE
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# undef CONFIG_USART1_SERIAL_CONSOLE
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# undef CONFIG_USART2_SERIAL_CONSOLE
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# undef CONFIG_USART3_SERIAL_CONSOLE
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# define HAVE_CONSOLE 1
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#elif defined(CONFIG_USART0_SERIAL_CONSOLE) && defined(CONFIG_SAM3U_USART0)
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# undef CONFIG_USART_SERIAL_CONSOLE
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# undef CONFIG_USART1_SERIAL_CONSOLE
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# undef CONFIG_USART2_SERIAL_CONSOLE
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# undef CONFIG_USART3_SERIAL_CONSOLE
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# define HAVE_CONSOLE 1
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#elif defined(CONFIG_USART1_SERIAL_CONSOLE) && defined(CONFIG_SAM3U_USART1)
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# undef CONFIG_USART_SERIAL_CONSOLE
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# undef CONFIG_USART0_SERIAL_CONSOLE
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# undef CONFIG_USART2_SERIAL_CONSOLE
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# undef CONFIG_USART3_SERIAL_CONSOLE
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# define HAVE_CONSOLE 1
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#elif defined(CONFIG_USART2_SERIAL_CONSOLE) && defined(CONFIG_SAM3U_USART2)
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# undef CONFIG_USART_SERIAL_CONSOLE
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# undef CONFIG_USART0_SERIAL_CONSOLE
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# undef CONFIG_USART1_SERIAL_CONSOLE
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# undef CONFIG_USART3_SERIAL_CONSOLE
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# define HAVE_CONSOLE 1
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#elif defined(CONFIG_USART3_SERIAL_CONSOLE) && defined(CONFIG_SAM3U_USART3)
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# undef CONFIG_USART_SERIAL_CONSOLE
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# undef CONFIG_USART0_SERIAL_CONSOLE
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# undef CONFIG_USART1_SERIAL_CONSOLE
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# undef CONFIG_USART2_SERIAL_CONSOLE
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# define HAVE_CONSOLE 1
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#else
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# undef CONFIG_USART_SERIAL_CONSOLE
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# undef CONFIG_USART0_SERIAL_CONSOLE
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# undef CONFIG_USART1_SERIAL_CONSOLE
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# undef CONFIG_USART2_SERIAL_CONSOLE
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# undef CONFIG_USART3_SERIAL_CONSOLE
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# undef HAVE_CONSOLE
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#endif
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/* Select USART parameters for the selected console */
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#if defined(CONFIG_UART_SERIAL_CONSOLE)
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# define SAM3U_CONSOLE_BASE SAM3U_UART_BASE
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# define SAM3U_CONSOLE_BAUD CONFIG_USART_BAUD
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# define SAM3U_CONSOLE_BITS CONFIG_USART_BITS
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# define SAM3U_CONSOLE_PARITY CONFIG_USART_PARITY
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# define SAM3U_CONSOLE_2STOP CONFIG_USART_2STOP
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#elif defined(CONFIG_USART0_SERIAL_CONSOLE)
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# define SAM3U_CONSOLE_BASE SAM3U_USART0_BASE
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# define SAM3U_CONSOLE_BAUD CONFIG_USART0_BAUD
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# define SAM3U_CONSOLE_BITS CONFIG_USART0_BITS
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# define SAM3U_CONSOLE_PARITY CONFIG_USART0_PARITY
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# define SAM3U_CONSOLE_2STOP CONFIG_USART0_2STOP
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#elif defined(CONFIG_USART1_SERIAL_CONSOLE)
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# define SAM3U_CONSOLE_BASE SAM3U_USART1_BASE
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# define SAM3U_CONSOLE_BAUD CONFIG_USART1_BAUD
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# define SAM3U_CONSOLE_BITS CONFIG_USART1_BITS
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# define SAM3U_CONSOLE_PARITY CONFIG_USART1_PARITY
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# define SAM3U_CONSOLE_2STOP CONFIG_USART1_2STOP
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#elif defined(CONFIG_USART2_SERIAL_CONSOLE)
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# define SAM3U_CONSOLE_BASE SAM3U_USART2_BASE
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# define SAM3U_CONSOLE_BAUD CONFIG_USART2_BAUD
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# define SAM3U_CONSOLE_BITS CONFIG_USART2_BITS
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# define SAM3U_CONSOLE_PARITY CONFIG_USART2_PARITY
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# define SAM3U_CONSOLE_2STOP CONFIG_USART2_2STOP
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#elif defined(CONFIG_USART3_SERIAL_CONSOLE)
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# define SAM3U_CONSOLE_BASE SAM3U_USART3_BASE
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# define SAM3U_CONSOLE_BAUD CONFIG_USART3_BAUD
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# define SAM3U_CONSOLE_BITS CONFIG_USART3_BITS
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# define SAM3U_CONSOLE_PARITY CONFIG_USART3_PARITY
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# define SAM3U_CONSOLE_2STOP CONFIG_USART3_2STOP
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#else
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# error "No CONFIG_U[S]ARTn_SERIAL_CONSOLE Setting"
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#endif
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/**************************************************************************
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* Private Types
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**************************************************************************/
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/**************************************************************************
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* Private Function Prototypes
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**************************************************************************/
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/**************************************************************************
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* Global Variables
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**************************************************************************/
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/**************************************************************************
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* Private Variables
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**************************************************************************/
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/**************************************************************************
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* Private Functions
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**************************************************************************/
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/**************************************************************************
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* Public Functions
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**************************************************************************/
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/**************************************************************************
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* Name: up_lowputc
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*
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* Description:
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* Output one byte on the serial console
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*
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**************************************************************************/
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void up_lowputc(char ch)
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{
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#warning "To be provided"
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}
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/**************************************************************************
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* Name: sam3u_lowsetup
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*
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* Description:
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* This performs basic initialization of the USART used for the serial
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* console. Its purpose is to get the console output availabe as soon
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* as possible.
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*
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**************************************************************************/
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void sam3u_lowsetup(void)
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{
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uint32_t regval;
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#warning "To be provided"
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/* Enable clocking for the UART */
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regval = getreg32(SAM3U_PMC_PCER);
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regval |= (1 << SAM3U_PID_UART);
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putreg32(regval, SAM3U_PMC_PCER);
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}
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