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LPC13xx SPI driver. 

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@2300 35acf78f-673a-0410-8e92-d51de3d6d3f4
master
gdisirio 2010-10-28 18:39:40 +00:00
parent 29a259ba43
commit 3ea8370651
5 changed files with 45 additions and 12 deletions
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2
demos/ARMCM3-LPC1343-GCC/halconf.h
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@ -130,7 +130,7 @@
* @brief Enables the SPI subsystem. * @brief Enables the SPI subsystem.
*/ */
#if !defined(CH_HAL_USE_SPI) || defined(__DOXYGEN__) #if !defined(CH_HAL_USE_SPI) || defined(__DOXYGEN__)
#define CH_HAL_USE_SPI FALSE #define CH_HAL_USE_SPI TRUE
#endif #endif
/* /*

37
demos/ARMCM3-LPC1343-GCC/main.c
View File

@ -21,18 +21,50 @@
#include "hal.h" #include "hal.h"
#include "test.h" #include "test.h"
/*
* Conversion table from hex digit to 7 segments encoding, bit 5 controls the
* dot.
* 8 = LU, 4 = RL, 2 = D, 1 = RU, 8 = U, 4 = M, 2 = LL, 1 = L.
*/
static uint8_t digits[32] = {
0x24, 0xAF, 0xE0, 0xA2, 0x2B, 0x32, 0x30, 0xA7,
0x20, 0x22, 0x21, 0x38, 0x74, 0xA8, 0x70, 0x71,
0x04, 0x8F, 0xC0, 0x82, 0x0B, 0x12, 0x10, 0x87,
0x00, 0x02, 0x01, 0x18, 0x54, 0x88, 0x50, 0x51
};
static void endsend(SPIDriver *spip) {
spiUnselect(spip);
}
/* Maximum speed SPI configuration (1MHz, CPHA=0, CPOL=0).*/
static SPIConfig spicfg = {
endsend,
GPIO1,
GPIO1_SPI0SEL,
CR0_DSS8BIT | CR0_FRFSPI | CR0_CLOCKRATE(0),
72
};
/* /*
* Red LED blinker thread, times are in milliseconds. * Red LED blinker thread, times are in milliseconds.
*/ */
static WORKING_AREA(waThread1, 128); static WORKING_AREA(waThread1, 128);
static msg_t Thread1(void *arg) { static msg_t Thread1(void *arg) {
uint8_t i = 0;
(void)arg; (void)arg;
while (TRUE) { while (TRUE) {
spiSelect(&SPID1);
spiStartSend(&SPID1, 1, &digits[i]);
palClearPad(GPIO0, GPIO0_LED2); palClearPad(GPIO0, GPIO0_LED2);
chThdSleepMilliseconds(500); chThdSleepMilliseconds(500);
spiSelect(&SPID1);
spiStartSend(&SPID1, 1, &digits[i | 0x10]);
palSetPad(GPIO0, GPIO0_LED2); palSetPad(GPIO0, GPIO0_LED2);
chThdSleepMilliseconds(500); chThdSleepMilliseconds(500);
i = (i + 1) & 15;
} }
return 0; return 0;
} }
@ -78,9 +110,10 @@ int main(int argc, char **argv) {
(void)argv; (void)argv;
/* /*
* Activates the serial driver 1 using the driver default configuration. * Activates the SD1 and SPI1 drivers.
*/ */
sdStart(&SD1, NULL); sdStart(&SD1, NULL); /* Default: 38400,8,N,1. */
spiStart(&SPID1, &spicfg);
/* /*
* Creates the blinker threads. * Creates the blinker threads.

2
os/hal/platforms/LPC13xx/platform.mk
View File

@ -1,7 +1,7 @@
# List of all the LPC13xx platform files. # List of all the LPC13xx platform files.
PLATFORMSRC = ${CHIBIOS}/os/hal/platforms/LPC13xx/hal_lld.c \ PLATFORMSRC = ${CHIBIOS}/os/hal/platforms/LPC13xx/hal_lld.c \
${CHIBIOS}/os/hal/platforms/LPC13xx/pal_lld.c \ ${CHIBIOS}/os/hal/platforms/LPC13xx/pal_lld.c \
${CHIBIOS}/os/hal/platforms/LPC13xx/serial_lld.c ${CHIBIOS}/os/hal/platforms/LPC13xx/serial_lld.c \
${CHIBIOS}/os/hal/platforms/LPC13xx/spi_lld.c ${CHIBIOS}/os/hal/platforms/LPC13xx/spi_lld.c
# Required include directories # Required include directories

2
os/hal/platforms/LPC13xx/serial_lld.c
View File

@ -214,7 +214,7 @@ static void notify1(void) {
* @isr * @isr
*/ */
#if LPC13xx_SERIAL_USE_UART0 || defined(__DOXYGEN__) #if LPC13xx_SERIAL_USE_UART0 || defined(__DOXYGEN__)
CH_IRQ_HANDLER(Vector94) { CH_IRQ_HANDLER(VectorF8) {
CH_IRQ_PROLOGUE(); CH_IRQ_PROLOGUE();

14
os/hal/platforms/LPC13xx/spi_lld.c
View File

@ -120,7 +120,7 @@ static void spi_serve_interrupt(SPIDriver *spip) {
* *
* @isr * @isr
*/ */
CH_IRQ_HANDLER(Vector90) { CH_IRQ_HANDLER(VectorF4) {
CH_IRQ_PROLOGUE(); CH_IRQ_PROLOGUE();
@ -143,8 +143,8 @@ void spi_lld_init(void) {
#if LPC13xx_SPI_USE_SSP0 #if LPC13xx_SPI_USE_SSP0
spiObjectInit(&SPID1); spiObjectInit(&SPID1);
SPID1.spd_ssp = LPC_SSP0; SPID1.spd_ssp = LPC_SSP;
LPC_IOCON->SCK_LOC = LPC13xx_SPI_SCK0_SELECTOR; LPC_IOCON->SCKLOC = LPC13xx_SPI_SCK0_SELECTOR;
#if LPC13xx_SPI_SCK0_SELECTOR == SCK0_IS_PIO0_10 #if LPC13xx_SPI_SCK0_SELECTOR == SCK0_IS_PIO0_10
LPC_IOCON->JTAG_TCK_PIO0_10 = 0xC2; /* SCK0 without resistors. */ LPC_IOCON->JTAG_TCK_PIO0_10 = 0xC2; /* SCK0 without resistors. */
#elif LPC13xx_SPI_SCK0_SELECTOR == SCK0_IS_PIO2_11 #elif LPC13xx_SPI_SCK0_SELECTOR == SCK0_IS_PIO2_11
@ -170,10 +170,10 @@ void spi_lld_start(SPIDriver *spip) {
/* Clock activation.*/ /* Clock activation.*/
#if LPC13xx_SPI_USE_SSP0 #if LPC13xx_SPI_USE_SSP0
if (&SPID1 == spip) { if (&SPID1 == spip) {
LPC_SYSCON->SSP0CLKDIV = LPC13xx_SPI_SSP0CLKDIV; LPC_SYSCON->SSPCLKDIV = LPC13xx_SPI_SSP0CLKDIV;
LPC_SYSCON->SYSAHBCLKCTRL |= (1 << 11); LPC_SYSCON->SYSAHBCLKCTRL |= (1 << 11);
LPC_SYSCON->PRESETCTRL |= 1; LPC_SYSCON->PRESETCTRL |= 1;
NVICEnableVector(SSP0_IRQn, NVICEnableVector(SSP_IRQn,
CORTEX_PRIORITY_MASK(LPC13xx_SPI_SSP0_IRQ_PRIORITY)); CORTEX_PRIORITY_MASK(LPC13xx_SPI_SSP0_IRQ_PRIORITY));
} }
#endif #endif
@ -200,8 +200,8 @@ void spi_lld_stop(SPIDriver *spip) {
if (&SPID1 == spip) { if (&SPID1 == spip) {
LPC_SYSCON->PRESETCTRL &= ~1; LPC_SYSCON->PRESETCTRL &= ~1;
LPC_SYSCON->SYSAHBCLKCTRL &= ~(1 << 11); LPC_SYSCON->SYSAHBCLKCTRL &= ~(1 << 11);
LPC_SYSCON->SSP0CLKDIV = 0; LPC_SYSCON->SSPCLKDIV = 0;
NVICDisableVector(SSP0_IRQn); NVICDisableVector(SSP_IRQn);
return; return;
} }
#endif #endif