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Add support for SPI NOR chip select

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2938 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2010-09-11 02:53:07 +00:00
parent ec64772e80
commit 37be652f6d
2 changed files with 19 additions and 2 deletions
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8
configs/ea3131/src/ea3131_internal.h
View File

@ -45,20 +45,24 @@
#include <nuttx/compiler.h>
#include <stdint.h>
#include "lpc313x_ioconfig.h"
/************************************************************************************
* Definitions
************************************************************************************/
/* EA3131L GPIOs ********************************************************************/
/* LEDs */
/* LEDs -- interface through an I2C GPIO expander */
/* BUTTONS -- NOTE that some have EXTI interrupts configured */
/* SPI Chip Selects */
/* SPI NOR flash is the only device on SPI. SPI_CS_OUT0 is its chip select */
/* USB Soft Connect Pullup*/
#define SPINOR_CS IOCONFIG_SPI_CSOUT0
/* USB Soft Connect Pullup -- NONE */
/************************************************************************************
* Public Types

13
configs/ea3131/src/up_spi.c
View File

@ -100,6 +100,7 @@ void weak_function lpc313x_spiinitialize(void)
* architecture.
*/
gpio_outputhigh(LPC313X_IOCONFIG_SPI, SPINOR_CS);
}
/****************************************************************************
@ -130,6 +131,18 @@ void weak_function lpc313x_spiinitialize(void)
void lpc313x_spiselect(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)
{
spidbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
if (devid == SPIDEV_FLASH)
{
if (selected)
{
gpio_outputlow(LPC313X_IOCONFIG_SPI, SPINOR_CS);
}
else
{
gpio_outputhigh(LPC313X_IOCONFIG_SPI, SPINOR_CS);
}
}
}
uint8_t lpc313x_spistatus(FAR struct spi_dev_s *dev, enum spi_dev_e devid)