LPC11xx: Add support for up_getc() which is needed for NSH if there is no file system. From Alan Carvalho de Assis.
This commit is contained in:
Gregory Nutt
parent
6bf2257d41
commit
0607441b95
@ -69,8 +69,8 @@ endif
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CHIP_ASRCS =
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CHIP_CSRCS = lpc11_clockconfig.c lpc11_gpio.c lpc11_i2c.c lpc11_idle.c
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CHIP_CSRCS += lpc11_irq.c lpc11_lowputc.c lpc11_serial.c lpc11_spi.c
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CHIP_CSRCS += lpc11_ssp.c lpc11_start.c
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CHIP_CSRCS += lpc11_irq.c lpc11_lowputc.c lpc11_lowgetc.c lpc11_serial.c
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CHIP_CSRCS += lpc11_spi.c lpc11_ssp.c lpc11_start.c
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# Configuration-dependent LPC11xx files
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131
arch/arm/src/lpc11xx/lpc11_lowgetc.c
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131
arch/arm/src/lpc11xx/lpc11_lowgetc.c
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@ -0,0 +1,131 @@
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/**************************************************************************
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* arch/arm/src/lpc11/lpc11_lowgetc.c
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*
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* Copyright (C) 2013 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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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 "chip/lpc11_syscon.h"
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#include "chip/lpc11_uart.h"
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#include "lpc11_gpio.h"
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#include "lpc11_lowgetc.h"
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#include "lpc11_serial.h"
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/**************************************************************************
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* Pre-processor Definitions
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**************************************************************************/
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/* Select UART parameters for the selected console */
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#if defined(CONFIG_UART0_SERIAL_CONSOLE)
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# define CONSOLE_BASE LPC11_UART0_BASE
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# define CONSOLE_FREQ BOARD_CORECLK_FREQ
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# define CONSOLE_BAUD CONFIG_UART0_BAUD
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# define CONSOLE_BITS CONFIG_UART0_BITS
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# define CONSOLE_PARITY CONFIG_UART0_PARITY
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#elif defined(CONFIG_UART1_SERIAL_CONSOLE)
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# define CONSOLE_BASE LPC11_UART1_BASE
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# define CONSOLE_FREQ BOARD_BUSCLK_FREQ
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# define CONSOLE_BAUD CONFIG_UART1_BAUD
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# define CONSOLE_BITS CONFIG_UART1_BITS
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# define CONSOLE_PARITY CONFIG_UART1_PARITY
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#elif defined(CONFIG_UART2_SERIAL_CONSOLE)
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# define CONSOLE_BASE LPC11_UART2_BASE
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# define CONSOLE_FREQ BOARD_BUSCLK_FREQ
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# define CONSOLE_BAUD CONFIG_UART2_BAUD
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# define CONSOLE_BITS CONFIG_UART2_BITS
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# define CONSOLE_PARITY CONFIG_UART2_PARITY
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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_lowgetc
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*
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* Description:
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* Input one byte from the serial console
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*
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**************************************************************************/
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int lpc11_lowgetc(void)
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{
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uint8_t ch = 0;
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#if defined HAVE_UART && defined HAVE_CONSOLE
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/* Wait while the Receiver Data Ready (RDR) is indicating a "empty" FIFO to
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* assure that we have data in the buffer to read.
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*/
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while ((getreg32(CONSOLE_BASE+LPC11_UART_LSR_OFFSET) & UART_LSR_RDR) == 0);
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/* Then read a character from the UART data register */
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ch = getreg8(CONSOLE_BASE+LPC11_UART_RBR_OFFSET);
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#endif
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return (int)ch;
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}
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81
arch/arm/src/lpc11xx/lpc11_lowgetc.h
Normal file
81
arch/arm/src/lpc11xx/lpc11_lowgetc.h
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@ -0,0 +1,81 @@
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/************************************************************************************
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* arch/arm/src/lpc11/lpc11_lowgetc.h
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*
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* Copyright (C) 2015 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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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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#ifndef __ARCH_ARM_SRC_LPC11XX_LPC11_LOWGETC_H
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#define __ARCH_ARM_SRC_LPC11XX_LPC11_LOWGETC_H
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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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/************************************************************************************
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* Pre-processor Definitions
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************************************************************************************/
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/************************************************************************************
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* Public Types
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************************************************************************************/
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/************************************************************************************
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* Public Data
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************************************************************************************/
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#ifndef __ASSEMBLY__
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/************************************************************************************
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* Public Functions
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************************************************************************************/
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#ifdef HAVE_SERIAL_CONSOLE
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int lpc11_lowgetc(void);
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#endif
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __ARCH_ARM_SRC_LPC11XX_LPC11_LOWGETC_H */
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@ -1039,4 +1039,19 @@ int up_putc(int ch)
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return ch;
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}
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/****************************************************************************
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* Name: up_getc
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*
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* Description:
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* Provide priority, low-level access to support OS debug writes
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*
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****************************************************************************/
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int up_getc(void)
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{
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/* Check for LF */
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return lpc11_lowgetc();
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}
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#endif /* USE_SERIALDRIVER */
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