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Add SD card support to the PIC32MX7 MMB board; Add regiser level debug instrumentatin for the PIC32 SPI driver

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4797 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2012-06-02 17:57:39 +00:00
parent 56dc80a2c9
commit 9fb5af00c7
7 changed files with 200 additions and 50 deletions
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4
ChangeLog
View File

@ -2870,5 +2870,9 @@
the search loop missed the PHY address needed by the Mikroelektronika
PIC32MX7 MMB board.
* configs/pic32mx7mmb/nsh: Configuration now supports a network by default.
* configs/pic32mx7mmb/src: Add support for the MMC/SD slot on board
the Mikroelektronika PIC32MX7 MMB board (not working on initial check-in).
* arch/mips/src/pic32/pic32mx-spi.c: Add support for very low-level,
register access debug output.

85
arch/mips/src/pic32mx/pic32mx-spi.c
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@ -72,6 +72,7 @@
#ifndef CONFIG_DEBUG
# undef CONFIG_DEBUG_SPI
# undef CONFIG_DEBUG_VERBOSE
# undef CONFIG_SPI_REGDEBUG
#endif
#ifdef CONFIG_DEBUG_SPI
@ -309,13 +310,75 @@ static struct pic32mx_dev_s g_spi4dev =
*
****************************************************************************/
#ifdef CONFIG_SPI_REGDEBUG
static uint32_t spi_getreg(FAR struct pic32mx_dev_s *priv, unsigned int offset)
{
/* Last address, value, and count */
static uint32_t prevaddr = 0;
static uint32_t prevalue = 0;
static uint32_t count = 0;
/* New address and value */
uint32_t addr;
uint32_t value;
/* Read the value from the register */
addr = priv->base + offset;
value = getreg32(addr);
/* Is this the same value that we read from the same register last time?
* Are we polling the register? If so, suppress some of the output.
*/
if (addr == prevaddr && value == prevalue)
{
if (count == 0xffffffff || ++count > 3)
{
if (count == 4)
{
lldbg("...\n");
}
return value;
}
}
/* No this is a new address or value */
else
{
/* Did we print "..." for the previous value? */
if (count > 3)
{
/* Yes.. then show how many times the value repeated */
lldbg("[repeats %d more times]\n", count-3);
}
/* Save the new address, value, and count */
prevaddr = addr;
prevalue = value;
count = 1;
}
/* Show the register value read */
lldbg("%08x->%08x\n", addr, value);
return value;
}
#else
static uint32_t spi_getreg(FAR struct pic32mx_dev_s *priv, unsigned int offset)
{
return getreg32(priv->base + offset);
}
#endif
/****************************************************************************
* Name: spi_getreg
* Name: spi_putreg
*
* Description:
* Write a value to one, 32-bit SPI register
@ -330,11 +393,31 @@ static uint32_t spi_getreg(FAR struct pic32mx_dev_s *priv, unsigned int offset)
*
****************************************************************************/
#ifdef CONFIG_SPI_REGDEBUG
static void spi_putreg(FAR struct pic32mx_dev_s *priv, unsigned int offset,
uint32_t value)
{
uint32_t addr;
/* Get the address to write to */
addr = priv->base + offset;
/* Show the register value being written */
lldbg("%08x<-%08x\n", addr, value);
/* Then do the write */
putreg32(value, addr);
}
#else
static void spi_putreg(FAR struct pic32mx_dev_s *priv, unsigned int offset,
uint32_t value)
{
putreg32(value, priv->base + offset);
}
#endif
/****************************************************************************
* Name: spi_lock

26
configs/pic32mx7mmb/README.txt
View File

@ -32,8 +32,8 @@ PIN CONFIGURATIONS SIGNAL NAME ON-BOARD CONNE
7 RC2/AC2TX/T3CK EE_CS# M25P80 CS
8 RC3/AC2RX/T4CK ACL_CS# ADXL345 CS and VCC
9 RC4/SDI1/T5CK SDI1 SPI1 data IN
10 PMA5/CN8/ECOL/RG6/SCK2/U3RTS/U6TX RG6 ?
11 PMA4/CN9/ECRS/RG7/SDA4/SDI2/U3RX SD_CD# SD Connector
10 PMA5/CN8/ECOL/RG6/SCK2/U3RTS/U6TX SD_WP SD card, write protect
11 PMA4/CN9/ECRS/RG7/SDA4/SDI2/U3RX SD_CD# SD card, card detect (not)
12 PMA3/AECRSDV/AERXDV/CN10/ECRSDV/ AECRSDV LAN8720A SRS_DIV
ERXDV/RG8/SCL4/SDO2/U3TX
13 MCLR MCLR Debug connector
@ -636,14 +636,19 @@ Where <subdir> is one of the following:
before the networking finally gives up and decides that no network is
available.
2. This example can support an FTP client. In order to build in FTP client
2. To add SPI-based support for the SD card slot:
CONFIG_PIC32MX_SPI1=y
CONFIG_NSH_ARCHINIT=y
3. This example can support an FTP client. In order to build in FTP client
support simply uncomment the following lines in the appconfig file (before
configuring) or in the apps/.config file (after configuring):
#CONFIGURED_APPS += netutils/ftpc
#CONFIGURED_APPS += examples/ftpc
3. This example can support an FTP server. In order to build in FTP server
4. This example can support an FTP server. In order to build in FTP server
support simply uncomment the following lines in the appconfig file (before
configuring) or in the apps/.config file (after configuring):
@ -654,11 +659,10 @@ Where <subdir> is one of the following:
CONFIG_DISABLE_POLL=n
Using a RAM disk and the USB MSC device with nsh and nsh2
---------------------------------------------------------
Here is an experimental change to either examples/nsh or examples/nsh2
that will create a RAM disk and attempt to export that RAM disk as a
USB mass storage device.
Using a RAM disk and the USB MSC device to the nsh configuration
----------------------------------------------------------------
Here is an experimental change to examples/nsh that will create a RAM
disk and attempt to export that RAM disk as a USB mass storage device.
1. Changes to nuttx/.config
@ -737,8 +741,8 @@ Where <subdir> is one of the following:
Status: Open
Priority: High
Adding LCD and graphics support:
-------------------------------
Adding LCD and graphics support to the nsh configuration:
--------------------------------------------------------
appconfig (apps/.config): Enable the application configurations that you
want to use. Asexamples:

3
configs/pic32mx7mmb/nsh/defconfig
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@ -445,6 +445,9 @@ CONFIG_DEBUG_NET=n
CONFIG_DEBUG_LCD=n
CONFIG_DEBUG_GRAPHICS=n
CONFIG_DEBUG_INPUT=n
CONFIG_DEBUG_FS=n
CONFIG_DEBUG_SPI=n
CONFIG_SPI_REGDEBUG=n
CONFIG_HAVE_CXX=n
CONFIG_HAVE_CXXINITIALIZE=n

20
configs/pic32mx7mmb/src/pic32mx7mmb_internal.h
View File

@ -83,6 +83,20 @@
* RD2 LCD-BLED Backlight Light Low value turns off
*/
/* SPI1 and SD Card
*
* ------ -------- ------------------------- --------------------------------
* GPIO SIGNAL BOARD CONNECTION NOTES
* ------ -------- ------------------------- --------------------------------
* RC4 SPI1 SD card slot SPI1 data IN
* RD0 SPO1 SD card slot SPI1 data OUT
* RD10 SCK1 SD card slot SD card, SPI clock
*
* RA9 SD_CS# SD card slot SD card, SPI chip select (active low)
* RG6 SD_WP SD card slot SD card, write protect
* RG7 SD_CD# SD card slot SD card, card detect (not)
*/
/****************************************************************************
* Public Types
****************************************************************************/
@ -108,11 +122,13 @@ extern "C" {
* Name: pic32mx_spiinitialize
*
* Description:
* Called to configure SPI chip select GPIO pins for the PCB Logic board.
* Called to configure SPI chip select GPIO pins for the Mikroelektronika PIC32MX7
* MMB board.
*
************************************************************************************/
#if defined(CONFIG_PIC32MX_SPI2)
#if defined(CONFIG_PIC32MX_SPI1) || defined(CONFIG_PIC32MX_SPI2) || \
defined(CONFIG_PIC32MX_SPI3) || defined(CONFIG_PIC32MX_SPI4)
EXTERN void weak_function pic32mx_spiinitialize(void);
#endif

11
configs/pic32mx7mmb/src/up_nsh.c
View File

@ -61,13 +61,10 @@
#define CONFIG_NSH_HAVEMMCSD 1
#define CONFIG_NSH_HAVEUSBHOST 1
/* TheMikroelektronika PIC32MX7 MMB does not have an SD slot on board. If one
* is added, then it must be specified by defining which SPI bus that it
* is connected on.
*/
/* The Mikroelektronika PIC32MX7 MMB has one SD slot on board, connected to SPI 1. */
#ifndef CONFIG_PIC32MX_MMCSDSPIPORTNO
# undef CONFIG_NSH_HAVEMMCSD
# define CONFIG_PIC32MX_MMCSDSPIPORTNO 1
#endif
/* Make sure that the configuration will support the SD card */
@ -84,7 +81,9 @@
# define CONFIG_NSH_MMCSDSPIPORTNO CONFIG_PIC32MX_MMCSDSPIPORTNO
# endif
/* Make sure that the NSH configuration uses the slot */
/* Make sure that the NSH configuration uses slot 0 (there is only one
* SD slot on the Mikroelektronica PIC32MX7 MMB).
*/
# if !defined(CONFIG_NSH_MMCSDSLOTNO) || CONFIG_NSH_MMCSDSLOTNO != 0
# warning "The Mikroelektronika PIC32MX7 MMB has only one slot (0)"

101
configs/pic32mx7mmb/src/up_spi.c
View File

@ -58,24 +58,35 @@
/************************************************************************************
* Definitions
************************************************************************************/
/* SPI1 and SD Card
*
* ------ -------- ------------------------- --------------------------------
* GPIO SIGNAL BOARD CONNECTION NOTES
* ------ -------- ------------------------- --------------------------------
* RC4 SPI1 SD card slot SPI1 data IN
* RD0 SPO1 SD card slot SPI1 data OUT
* RD10 SCK1 SD card slot SD card, SPI clock
*
* RA9 SD_CS# SD card slot SD card, SPI chip select (active low)
* RG6 SD_WP SD card slot SD card, write protect
* RG7 SD_CD# SD card slot SD card, card detect (not)
*/
#define GPIO_SD_CS (GPIO_OUTPUT|GPIO_VALUE_ONE|GPIO_PORTA|GPIO_PIN9)
#define GPIO_SD_WP (GPIO_INPUT|GPIO_PORTG|GPIO_PIN6)
#define GPIO_SD_CD (GPIO_INPUT|GPIO_INT|GPIO_PORTG|GPIO_PIN7)
/* The following enable debug output from this file (needs CONFIG_DEBUG too).
*
* CONFIG_SPI_DEBUG - Define to enable basic SPI debug
* CONFIG_SPI_VERBOSE - Define to enable verbose SPI debug
* CONFIG_DEBUG_SPI - Define to enable basic SPI debug
*/
#ifdef CONFIG_SPI_DEBUG
# define sspdbg lldbg
# ifdef CONFIG_SPI_VERBOSE
# define sspvdbg lldbg
# else
# define sspvdbg(x...)
# endif
#ifdef CONFIG_DEBUG_SPI
# define spidbg lldbg
# define spivdbg llvdbg
#else
# undef CONFIG_SPI_VERBOSE
# define sspdbg(x...)
# define sspvdbg(x...)
# define spidbg(x...)
# define spivdbg(x...)
#endif
/************************************************************************************
@ -90,15 +101,20 @@
* Name: pic32mx_sspinitialize
*
* Description:
* Called to configure SPI chip select GPIO pins for the Sure PIC32MX board.
* Called to configure SPI chip select GPIO pins for the Mikroelektronka PIC32MX7
* MMB board.
*
************************************************************************************/
void weak_function pic32mx_sspinitialize(void)
{
/* Configure the SPI chip select GPIOs */
/* Configure the SPI chip select, write protect, and card detect GPIOs */
#warning "Missing logic"
#ifdef CONFIG_PIC32MX_SPI1
pic32mx_configgpio(GPIO_SD_CS);
pic32mx_configgpio(GPIO_SD_WP);
pic32mx_configgpio(GPIO_SD_CD);
#endif
}
/************************************************************************************
@ -135,15 +151,37 @@ enum spi_dev_e;
#ifdef CONFIG_PIC32MX_SPI1
void pic32mx_spi1select(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");
#warning "Missing logic"
spidbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
if (devid == SPIDEV_MMCSD)
{
pic32mx_gpiowrite(GPIO_SD_CS, !selected);
}
}
uint8_t pic32mx_spi1status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
{
sspdbg("Returning nothing\n");
#warning "Missing logic"
return 0;
uint8_t ret = 0;
/* Card detect active low. */
if (devid == SPIDEV_MMCSD)
{
if (!pic32mx_gpioread(GPIO_SD_CD))
{
ret = SPI_STATUS_PRESENT;
/* A high value indicates the the card is write protected. */
if (pic32mx_gpioread(GPIO_SD_WP))
{
ret |= SPI_STATUS_WRPROTECTED;
}
}
}
spidbg("Returning %02x\n", ret);
return ret;
}
#ifdef CONFIG_SPI_CMDDATA
int pic32mx_spi1cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
@ -154,21 +192,22 @@ int pic32mx_spi1cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cm
#endif
#endif
#ifdef CONFIG_PIC31MX_SPI1
void pic31mx_spi1select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected)
#ifdef CONFIG_PIC31MX_SPI2
void pic31mx_spi2select(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");
spidbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
#warning "Missing logic"
}
uint8_t pic31mx_spi1status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
uint8_t pic31mx_spi2status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
{
sspdbg("Returning nothing\n");
spidbg("Returning nothing\n");
#warning "Missing logic"
return 0;
}
#ifdef CONFIG_SPI_CMDDATA
int pic31mx_spi1cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
int pic31mx_spi2cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
{
#warning "Missing logic"
return 0;
@ -179,16 +218,17 @@ int pic31mx_spi1cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cm
#ifdef CONFIG_PIC31MX_SPI3
void pic32mx_spi3select(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");
spidbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
#warning "Missing logic"
}
uint8_t pic32mx_spi3status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
{
sspdbg("Returning nothing\n");
spidbg("Returning nothing\n");
#warning "Missing logic"
return 0;
}
#ifdef CONFIG_SPI_CMDDATA
int pic32mx_spi3cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
{
@ -201,16 +241,17 @@ int pic32mx_spi3cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cm
#ifdef CONFIG_PIC32MX_SPI4
void pic32mx_spi4select(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");
spidbg("devid: %d CS: %s\n", (int)devid, selected ? "assert" : "de-assert");
#warning "Missing logic"
}
uint8_t pic32mx_spi4status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
{
sspdbg("Returning nothing\n");
spidbg("Returning nothing\n");
#warning "Missing logic"
return 0;
}
#ifdef CONFIG_SPI_CMDDATA
int pic32mx_spi4cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
{