Zkit-arm-1769 board uses SSP0 to LCD and SPI to SD-Card
This commit is contained in:
Gregory Nutt
parent
f01b7e15c8
commit
c05875e93a
@ -4536,3 +4536,6 @@
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Fix handling of the RCC SYSDIV2 field whent the PLL output is
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400MHz. Don't forget to set the USERCC2 bit in the register or
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all is for naught (2013-4-09).
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* configs/zkit-arm-1769/src/up_lcd.c, up_ssp.c, and up_spi.c:
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Use SSP0 to LCD and SPI to SD-Card on the Zkit-arm-1769 board.
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From Manikandan. S (2013-4-10)
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@ -63,6 +63,10 @@ ifeq ($(CONFIG_CAN),y)
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CSRCS += up_can.c
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endif
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ifeq ($(CONFIG_LPC17_SPI),y)
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CSRCS += up_spi.c
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endif
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AOBJS = $(ASRCS:.S=$(OBJEXT))
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COBJS = $(CSRCS:.c=$(OBJEXT))
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@ -108,12 +108,11 @@ FAR struct lcd_dev_s *dev;
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int up_lcdinitialize(void)
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{
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lpc17_configgpio(ZKITARM_OLED_RST);
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lpc17_configgpio(ZKITARM_OLED_CS);
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lpc17_configgpio(ZKITARM_OLED_RS);
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lpc17_gpiowrite(ZKITARM_OLED_RST, 1);
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lpc17_gpiowrite(ZKITARM_OLED_CS, 1);
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lpc17_gpiowrite(ZKITARM_OLED_RS, 1);
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zkit_sspinitialize();
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spi = lpc17_sspinitialize(0);
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if (!spi)
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{
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190
configs/zkit-arm-1769/src/up_spi.c
Normal file
190
configs/zkit-arm-1769/src/up_spi.c
Normal file
@ -0,0 +1,190 @@
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/************************************************************************************
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* configs/zkit-arm-1769/src/up_spi.c
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* arch/arm/src/board/up_spi.c
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*
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* Copyright (C) 2013 Zilogic Systems. All rights reserved.
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* Author: Kannan <code@zilogic.com>
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*
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* Based on configs/lpcxpresso-lpc1768/src/up_ssp.c
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*
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* Copyright (C) 2011 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 <stdbool.h>
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#include <debug.h>
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#include <nuttx/spi.h>
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#include <arch/board/board.h>
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#include "up_arch.h"
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#include "chip.h"
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#include "lpc17_spi.h"
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#include "lpc17_gpio.h"
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#include "zkitarm_internal.h"
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#if defined(CONFIG_LPC17_SPI)
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/************************************************************************************
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* Definitions
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************************************************************************************/
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/* CONFIG_DEBUG_SPI enables debug output from this file (needs CONFIG_DEBUG too) */
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#ifdef CONFIG_DEBUG_SPI
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# define spidbg lldbg
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# ifdef CONFIG_DEBUG_VERBOSE
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# define spivdbg lldbg
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# else
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# define spivdbg(x...)
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# endif
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#else
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# define spidbg(x...)
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# define spivdbg(x...)
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#endif
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/* Dump GPIO registers */
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#if defined(CONFIG_DEBUG_SPI) && defined(CONFIG_DEBUG_VERBOSE)
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# define spi_dumpgpio(m) lpc17_dumpgpio(SDCCS_GPIO, m)
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#else
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# define spi_dumpgpio(m)
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#endif
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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: zkit_spiinitialize
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*
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* Description:
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* Called to configure SPI chip select and card detect GPIO pins for the
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* ZKIT-ARM-1769 Kit.
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*
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************************************************************************************/
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void weak_function zkit_spiinitialize(void)
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{
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/* Configure the SPI-based microSD CS and Card Detect (CD) GPIO */
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spi_dumpgpio("zkit_spiinitialize() Entry)");
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/* Configure card detect and chip select for the SD slot. */
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(void)lpc17_configgpio(ZKITARM_SD_CS);
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(void)lpc17_configgpio(ZKITARM_SD_CD);
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spi_dumpgpio("zkit_spiinitialize() Exit");
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}
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/************************************************************************************
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* Name: lpc17_spiselect and lpc17_spistatus
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*
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* Description:
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* The external functions, lpc17_spiselect and lpc17_spistatus
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* must be provided by board-specific logic. They are implementations of the select
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* and status methods of the SPI interface defined by struct spi_ops_s (see
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* include/nuttx/spi.h). All other methods (including up_spiinitialize())
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* are provided by common LPC17xx logic. To use this common SPI logic on your
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* board:
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*
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* 1. Provide logic in lpc17_boardinitialize() to configure SPI/SSP chip select
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* pins.
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* 2. Provide lpc17_spiselect and lpc17_spistatus functions
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* in your board-specific logic. These functions will perform chip selection
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* and status operations using GPIOs in the way your board is configured.
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* 3. Add a calls to up_spiinitialize() in your low level application
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* initialization logic
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* 4. The handle returned by up_spiinitialize() may then be used to bind the
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* SPI driver to higher level logic (e.g., calling
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* mmcsd_spislotinitialize(), for example, will bind the SPI driver to
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* the SPI MMC/SD driver).
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*
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************************************************************************************/
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void lpc17_spiselect(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)
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{
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spidbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
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spi_dumpgpio("lpc17_spiselect() Entry");
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if (devid == SPIDEV_MMCSD)
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{
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/* Assert/de-assert the CS pin to the card */
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(void)lpc17_gpiowrite(ZKITARM_SD_CS, !selected);
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}
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spi_dumpgpio("lpc17_spiselect() Exit");
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}
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uint8_t lpc17_spistatus(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
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{
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if (devid == SPIDEV_MMCSD)
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{
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/* Read the state of the card-detect bit */
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if (lpc17_gpioread(ZKITARM_SD_CD) == 0)
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{
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spidbg("Returning SPI_STATUS_PRESENT\n");
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return SPI_STATUS_PRESENT;
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}
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}
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spidbg("Returning zero\n");
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return 0;
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}
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#ifdef CONFIG_SPI_CMDDATA
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/******************************************************************************
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* Name: lpc17_spicmddata
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*
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* Description: Dummy Function
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*
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******************************************************************************/
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int lpc17_spicmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
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{
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return OK;
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}
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#endif /* CONFIG_SPI_CMDDATA */
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@ -98,28 +98,19 @@
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* Name: zkit_sspinitialize
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*
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* Description:
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* Called to configure SPI chip select GPIO pins for the LM3S6965 Eval Kit.
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* Called to configure SPI chip select GPIO pins for the ZKIT-ARM-1769 Kit.
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*
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************************************************************************************/
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void weak_function zkit_sspinitialize(void)
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{
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/* Configure the SPI-based microSD CS GPIO */
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/* Configure the SPI-based LCD CS GPIO */
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ssp_dumpgpio("zkit_sspinitialize() Entry)");
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/* Configure card detect and chip select for the SD slot. NOTE: Jumper J55 must
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* be set correctly for the SD slot chip select.
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*/
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/* Configure chip select for the LCD. */
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#ifdef CONFIG_LPC17_SSP0
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(void)lpc17_configgpio(ZKITARM_SD_CS);
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(void)lpc17_configgpio(ZKITARM_SD_CD);
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/* Configure chip select for the OLED. For the SPI interface, insert jumpers in
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* J42, J43, J45 pin1-2 and J46 pin 1-2.
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*/
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#ifdef CONFIG_NX_LCDDRIVER
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(void)lpc17_configgpio(ZKITARM_OLED_CS);
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#endif
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@ -177,34 +168,24 @@ void lpc17_ssp0select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool sel
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sspdbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
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ssp_dumpgpio("lpc17_spi0select() Entry");
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if (devid == SPIDEV_MMCSD)
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{
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/* Assert/de-assert the CS pin to the card */
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(void)lpc17_gpiowrite(ZKITARM_SD_CS, !selected);
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}
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#ifdef CONFIG_NX_LCDDRIVER
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else if (devid == SPIDEV_DISPLAY)
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if (devid == SPIDEV_DISPLAY)
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{
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/* Assert the CS pin to the OLED display */
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(void)lpc17_gpiowrite(ZKITARM_OLED_CS, !selected);
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}
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#endif
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ssp_dumpgpio("lpc17_spi0select() Exit");
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}
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uint8_t lpc17_ssp0status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
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{
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if (devid == SPIDEV_MMCSD)
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if (devid == SPIDEV_DISPLAY)
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{
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/* Read the state of the card-detect bit */
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if (lpc17_gpioread(ZKITARM_SD_CD) == 0)
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{
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sspdbg("Returning SPI_STATUS_PRESENT\n");
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return SPI_STATUS_PRESENT;
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}
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sspdbg("Returning SPI_STATUS_PRESENT\n");
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return SPI_STATUS_PRESENT;
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}
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sspdbg("Returning zero\n");
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