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Add LPCXpression SD card support

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3508 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2011-04-15 18:40:31 +00:00
parent c1c80a723b
commit 553cde8774
7 changed files with 98 additions and 18 deletions
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27
configs/lpcxpresso-lpc1768/README.txt
View File

@ -1,14 +1,14 @@
README
^^^^^^
README for NuttX port to the Embedded Artists' LPCXpresso base board with
README for NuttX port to the Embedded Artists' base board with the NXP
the LPCXpresso daughter board.
Contents
^^^^^^^^
LCPXpresso LPC1768 Board
Jumpers
Embedded Artist's Base Board
Development Environment
GNU Toolchain Options
NuttX buildroot Toolchain
@ -98,13 +98,34 @@ LCPXpresso LPC1768 Board
P4[28]/RX-MCLK/MAT2.0/TXD3 PAD15 N/A
P4[29]/TX-MCLK/MAT2.1/RXD3 PAD16 N/A
Embedded Artist's Base Board
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Jumpers
^^^^^^^
-------
There are many jumpers on the base board. A usable combination is the
default jumper settings WITH the two J54 jumpers both removed. Those
jumpers are for ISP support and will cause the board to reset.
To use the SD, J55 must be set to provide chip select PIO1_11 signal as
the SD slot chip select.
SD Slot
-------
Base-board J4/J6 LPC1768
SD Signal Pin Pin
--- ----------- ----- --------
CS PIO1_11* 55 P2.2
DIN PIO0_9-MOSI 5 P0.9 MOSI1
DOUT PIO0_8-MISO 6 P0.8 MISO1
CLK PIO2_11-SCK 7 P0.9 SCK1
CD PIO2_10 52 P2.11
*J55 must be set to provide chip select PIO1_11 signal as the SD slot
chip select.
Development Environment
^^^^^^^^^^^^^^^^^^^^^^^

5
configs/lpcxpresso-lpc1768/nsh/defconfig
View File

@ -117,7 +117,7 @@ CONFIG_LPC17_CAN1=n
CONFIG_LPC17_CAN2=n
CONFIG_LPC17_SPI=n
CONFIG_LPC17_SSP0=n
CONFIG_LPC17_SSP1=n
CONFIG_LPC17_SSP1=y
CONFIG_LPC17_I2C0=n
CONFIG_LPC17_I2C1=n
CONFIG_LPC17_I2S=n
@ -332,7 +332,6 @@ CONFIG_HAVE_LIBM=n
CONFIG_DEBUG=n
CONFIG_DEBUG_VERBOSE=n
CONFIG_DEBUG_SYMBOLS=n
CONFIG_DEBUG_USB=n
CONFIG_MM_REGIONS=2
CONFIG_ARCH_LOWPUTC=y
CONFIG_RR_INTERVAL=200
@ -836,7 +835,7 @@ CONFIG_NSH_FATMOUNTPT=/tmp
#
# Architecture-specific NSH options
#
CONFIG_NSH_MMCSDSPIPORTNO=0
CONFIG_NSH_MMCSDSPIPORTNO=1
CONFIG_NSH_MMCSDSLOTNO=0
CONFIG_NSH_MMCSDMINOR=0

2
configs/lpcxpresso-lpc1768/ostest/defconfig
View File

@ -780,7 +780,7 @@ CONFIG_NSH_FATMOUNTPT=/tmp
#
# Architecture-specific NSH options
#
CONFIG_NSH_MMCSDSPIPORTNO=0
CONFIG_NSH_MMCSDSPIPORTNO=1
CONFIG_NSH_MMCSDSLOTNO=0
CONFIG_NSH_MMCSDMINOR=0

2
configs/lpcxpresso-lpc1768/src/Makefile
View File

@ -39,9 +39,11 @@ CFLAGS += -I$(TOPDIR)/sched
ASRCS =
CSRCS = up_boot.c up_leds.c up_ssp.c
ifeq ($(CONFIG_NSH_ARCHINIT),y)
CSRCS += up_nsh.c
endif
ifeq ($(CONFIG_USBSTRG),y)
CSRCS += up_usbstrg.c
endif

19
configs/lpcxpresso-lpc1768/src/lpcxpresso_internal.h
View File

@ -134,6 +134,25 @@
* P4[28]/RX-MCLK/MAT2.0/TXD3 PAD15 N/A
* P4[29]/TX-MCLK/MAT2.1/RXD3 PAD16 N/A
*/
/* SD Slot
*
* Base-board J4/J6 LPC1768
* SD Signal Pin Pin
* --- ----------- ----- --------
* CS PIO1_11* 55 P2.2 (See GPIO_SD_CS)
* DIN PIO0_9-MOSI 5 P0.9 MOSI1 (See GPIO_SSP1_MOSI in lpc17_internal.h)
* DOUT PIO0_8-MISO 6 P0.8 MISO1 (See GPIO_SSP1_MISO in lpc17_internal.h)
* CLK PIO2_11-SCK 7 P0.9 SCK1 (See GPIO_SSP1_SCK in board.h)
* CD PIO2_10 52 P2.11 (See GPIO_SD_CD)
*/
#define GPIO_SD_CS (GPIO_OUTPUT | GPIO_VALUE_ONE | GPIO_PORT2 | GPIO_PIN2)
#ifdef CONFIG_GPIO_IRQ
# define GPIO_SD_CD (GPIO_INTBOTH | GPIO_PULLUP | GPIO_PORT2 | GPIO_PIN11)
#else
# define GPIO_SD_CD (GPIO_INPUT | GPIO_PULLUP | GPIO_PORT2 | GPIO_PIN11)
#endif
/************************************************************************************
* Public Types

12
configs/lpcxpresso-lpc1768/src/up_nsh.c
View File

@ -57,8 +57,8 @@
#ifdef CONFIG_ARCH_BOARD_LPCXPRESSO
# define CONFIG_NSH_HAVEUSBDEV 1
# ifdef CONFIG_LPC17_SSP0
# define CONFIG_NSH_HAVEMMCSD 1
# ifdef CONFIG_LPC17_SSP1
# define CONFIG_NSH_HAVEMMCSD 1
# else
# undef CONFIG_NSH_HAVEMMCSD
# endif
@ -71,13 +71,13 @@
/* Do we have SPI support for MMC/SD? */
#ifdef CONFIG_NSH_HAVEMMCSD
# if !defined(CONFIG_NSH_MMCSDSPIPORTNO) || CONFIG_NSH_MMCSDSPIPORTNO != 0
# error "The LPCXpresso MMC/SD is on SSP0"
# if !defined(CONFIG_NSH_MMCSDSPIPORTNO) || CONFIG_NSH_MMCSDSPIPORTNO != 1
# error "The LPCXpresso MMC/SD is on SSP1"
# undef CONFIG_NSH_MMCSDSPIPORTNO
# define CONFIG_NSH_MMCSDSPIPORTNO 0
# define CONFIG_NSH_MMCSDSPIPORTNO 1
# endif
# if !defined(CONFIG_NSH_MMCSDSLOTNO) || CONFIG_NSH_MMCSDSLOTNO != 0
# error "The LPCXpresso MMC/SD is only one slot (0)"
# error "The LPCXpresso MMC/SD has only one slot (0)"
# undef CONFIG_NSH_MMCSDSLOTNO
# define CONFIG_NSH_MMCSDSLOTNO 0
# endif

49
configs/lpcxpresso-lpc1768/src/up_ssp.c
View File

@ -2,7 +2,7 @@
* configs/lpcxpresso-lpc1768/src/up_ssp.c
* arch/arm/src/board/up_ssp.c
*
* Copyright (C) 2010 Gregory Nutt. All rights reserved.
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
@ -107,7 +107,16 @@ void weak_function lpc17_sspinitialize(void)
/* Configure the SPI-based microSD CS GPIO */
ssp_dumpgpio("lpc17_sspinitialize() Entry)");
#warning "Configure chip selects here"
/* Configure card detect and chip select for the SD slot. NOTE: Jumper J55 must
* be set correctly for the SD slot chip select.
*/
#ifdef CONFIG_LPC17_SSP1
(void)lpc17_configgpio(GPIO_SD_CS);
(void)lpc17_configgpio(GPIO_SD_CD);
#endif
ssp_dumpgpio("lpc17_sspinitialize() Exit");
}
@ -140,11 +149,11 @@ void weak_function lpc17_sspinitialize(void)
void lpc17_ssp0select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)
{
sspdbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
ssp_dumpgpio("lpc17_spiselect() Entry");
ssp_dumpgpio("lpc17_spi0select() Entry");
#warning "Assert CS here (false)"
ssp_dumpgpio("lpc17_spiselect() Exit");
ssp_dumpgpio("lpc17_spi0select() Exit");
}
uint8_t lpc17_ssp0status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
@ -155,7 +164,37 @@ uint8_t lpc17_ssp0status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
#endif
#ifdef CONFIG_LPC17_SSP1
# warning "SSP1 chip selects not known"
void lpc17_ssp1select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)
{
sspdbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
ssp_dumpgpio("lpc17_spi1select() Entry");
if (devid == SPIDEV_MMCSD)
{
/* Assert/de-assert the CS pin to the card */
(void)lpc17_gpiowrite(GPIO_SD_CS, !selected);
}
ssp_dumpgpio("lpc17_spi1select() Exit");
}
uint8_t lpc17_ssp1status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
{
if (devid == SPIDEV_MMCSD)
{
/* Read the state of the card-detect bit */
if (lpc17_gpioread(GPIO_SD_CD) == 0)
{
sspdbg("Returning SPI_STATUS_PRESENT\n");
return SPI_STATUS_PRESENT;
}
}
sspdbg("Returning zero\n");
return 0;
}
#endif
#endif /* CONFIG_LPC17_SSP0 || CONFIG_LPC17_SSP1 */