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git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@1098 35acf78f-673a-0410-8e92-d51de3d6d3f4

master
gdisirio 2009-08-21 11:08:53 +00:00
parent c3fa78f3d1
commit e742f3abaa
6 changed files with 196 additions and 14 deletions
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10
demos/ARM7-AT91SAM7X-GCC/Makefile
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@ -53,8 +53,9 @@ CSRC = ${PORTSRC} \
${KERNSRC} \
${TESTSRC} \
../../os/io/pal.c \
../../os/ports/GCC/ARM7/AT91SAM7X/pal_lld.c \
../../os/ports/GCC/ARM7/AT91SAM7X/sam7x_serial.c \
../../os/io/serial.c \
../../os/io/platforms/AT91SAM7X/pal_lld.c \
../../os/io/platforms/AT91SAM7X/serial_lld.c \
at91lib/aic.c \
board.c main.c
@ -88,8 +89,9 @@ ASMSRC = $(PORTASM) \
INCDIR = $(PORTINC) $(KERNINC) $(TESTINC) \
../../os/io \
../../os/ports/GCC/ARM7/AT91SAM7X \
../../os/various
../../os/io/platforms/AT91SAM7X \
../../os/various \
../../os/ports/GCC/ARM7/AT91SAM7X
#
# Project, sources and paths

5
demos/ARM7-AT91SAM7X-GCC/board.c
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@ -19,12 +19,11 @@
#include <ch.h>
#include <pal.h>
#include <serial.h>
#include "board.h"
#include "at91lib/aic.h"
#include <sam7x_serial.h>
/*
* FIQ Handler weak symbol defined in vectors.s.
*/
@ -169,7 +168,7 @@ void hwinit1(void) {
/*
* Serial driver initialization, RTS/CTS pins enabled for USART0 only.
*/
serial_init(AT91C_AIC_PRIOR_HIGHEST - 2, AT91C_AIC_PRIOR_HIGHEST - 2);
sdInit();
AT91C_BASE_PIOA->PIO_PDR = AT91C_PA3_RTS0 | AT91C_PA4_CTS0;
AT91C_BASE_PIOA->PIO_ASR = AT91C_PIO_PA3 | AT91C_PIO_PA4;
AT91C_BASE_PIOA->PIO_PPUDR = AT91C_PIO_PA3 | AT91C_PIO_PA4;

9
demos/ARM7-AT91SAM7X-GCC/main.c
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@ -19,10 +19,10 @@
#include <ch.h>
#include <pal.h>
#include <serial.h>
#include <test.h>
#include "board.h"
#include <sam7x_serial.h>
static WORKING_AREA(waThread1, 64);
static msg_t Thread1(void *arg) {
@ -42,6 +42,11 @@ static msg_t Thread1(void *arg) {
*/
int main(int argc, char **argv) {
/*
* Activates the communication port 1 using the driver default configuration.
*/
sdStart(&COM1, NULL);
/*
* Creates the blinker thread.
*/
@ -53,7 +58,7 @@ int main(int argc, char **argv) {
while (TRUE) {
chThdSleepMilliseconds(500);
if (!palReadPad(IOPORT_B, PIOB_SW1))
chFDDWrite(&COM1, (uint8_t *)"Hello World!\r\n", 14);
sdWrite(&COM1, (uint8_t *)"Hello World!\r\n", 14);
if (!palReadPad(IOPORT_B, PIOB_SW2))
TestThread(&COM1);
}

163
os/io/platforms/AT91SAM7X/serial_lld.c
View File

@ -29,8 +29,21 @@
#include "at91lib/aic.h"
#if USE_SAM7X_USART0 || defined(__DOXYGEN__)
/** @brief USART0 serial driver identifier.*/
SerialDriver COM1;
#endif
#if USE_SAM7X_USART1 || defined(__DOXYGEN__)
/** @brief USART1 serial driver identifier.*/
SerialDriver COM2;
#endif
/** @brief Driver default configuration.*/
static const SerialDriverConfig default_config = {
38400,
AT91C_US_USMODE_NORMAL | AT91C_US_CLKS_CLOCK |
AT91C_US_CHRL_8_BITS | AT91C_US_PAR_NONE | AT91C_US_NBSTOP_1_BIT
};
/*===========================================================================*/
@ -69,13 +82,106 @@ void usart_init(AT91PS_USART u, const SerialDriverConfig *config) {
*/
void usart_deinit(AT91PS_USART u) {
/* Disables IRQ sources and stop operations.*/
u->US_IDR = 0xFFFFFFFF;
u->US_CR = AT91C_US_RSTRX | AT91C_US_RSTTX | AT91C_US_RSTSTA;
u->US_MR = 0;
u->US_RTOR = 0;
u->US_TTGR = 0;
}
/**
* @brief Error handling routine.
* @param[in] err USART CSR register value
* @param[in] sdp communication channel associated to the USART
*/
static void set_error(AT91_REG csr, SerialDriver *sdp) {
sdflags_t sts = 0;
if (csr & AT91C_US_OVRE)
sts |= SD_OVERRUN_ERROR;
if (csr & AT91C_US_PARE)
sts |= SD_PARITY_ERROR;
if (csr & AT91C_US_FRAME)
sts |= SD_FRAMING_ERROR;
if (csr & AT91C_US_RXBRK)
sts |= SD_BREAK_DETECTED;
chSysLockFromIsr();
sdAddFlagsI(sdp, sts);
chSysUnlockFromIsr();
}
#if defined(__GNU__)
__attribute__((noinline))
#endif
/**
* @brief Common IRQ handler.
* @param[in] u pointer to an USART I/O block
* @param[in] com communication channel associated to the USART
*/
static void serve_interrupt(AT91PS_USART u, SerialDriver *sdp) {
if (u->US_CSR & AT91C_US_RXRDY) {
chSysLockFromIsr();
sdIncomingDataI(sdp, u->US_RHR);
chSysUnlockFromIsr();
}
if (u->US_CSR & AT91C_US_TXRDY) {
chSysLockFromIsr();
msg_t b = sdRequestDataI(sdp);
chSysUnlockFromIsr();
if (b < Q_OK)
u->US_IDR = AT91C_US_TXRDY;
else
u->US_THR = b;
}
if (u->US_CSR & (AT91C_US_OVRE | AT91C_US_FRAME | AT91C_US_PARE | AT91C_US_RXBRK)) {
set_error(u->US_CSR, sdp);
u->US_CR = AT91C_US_RSTSTA;
}
AT91C_BASE_AIC->AIC_EOICR = 0;
}
#if USE_SAM7X_USART0 || defined(__DOXYGEN__)
static void notify1(void) {
AT91C_BASE_US0->US_IER = AT91C_US_TXRDY;
}
#endif
#if USE_SAM7X_USART1 || defined(__DOXYGEN__)
static void notify2(void) {
AT91C_BASE_US1->US_IER = AT91C_US_TXRDY;
}
#endif
/*===========================================================================*/
/* Low Level Driver interrupt handlers. */
/*===========================================================================*/
#if USE_SAM7X_USART0 || defined(__DOXYGEN__)
CH_IRQ_HANDLER(USART0IrqHandler) {
CH_IRQ_PROLOGUE();
serve_interrupt(AT91C_BASE_US0, &COM1);
CH_IRQ_EPILOGUE();
}
#endif
#if USE_SAM7X_USART1 || defined(__DOXYGEN__)
CH_IRQ_HANDLER(USART1IrqHandler) {
CH_IRQ_PROLOGUE();
serve_interrupt(AT91C_BASE_US1, &COM2);
CH_IRQ_EPILOGUE();
}
#endif
/*===========================================================================*/
/* Low Level Driver exported functions. */
/*===========================================================================*/
@ -85,6 +191,25 @@ void usart_deinit(AT91PS_USART u) {
*/
void sd_lld_init(void) {
#if USE_SAM7X_USART0
sdObjectInit(&COM1, NULL, notify1);
AT91C_BASE_PIOA->PIO_PDR = AT91C_PA0_RXD0 | AT91C_PA1_TXD0;
AT91C_BASE_PIOA->PIO_ASR = AT91C_PIO_PA0 | AT91C_PIO_PA1;
AT91C_BASE_PIOA->PIO_PPUDR = AT91C_PIO_PA0 | AT91C_PIO_PA1;
AIC_ConfigureIT(AT91C_ID_US0,
AT91C_AIC_SRCTYPE_HIGH_LEVEL | SAM7X_USART0_PRIORITY,
USART0IrqHandler);
#endif
#if USE_SAM7X_USART1
sdObjectInit(&COM2, NULL, notify2);
AT91C_BASE_PIOA->PIO_PDR = AT91C_PA5_RXD1 | AT91C_PA6_TXD1;
AT91C_BASE_PIOA->PIO_ASR = AT91C_PIO_PA5 | AT91C_PIO_PA6;
AT91C_BASE_PIOA->PIO_PPUDR = AT91C_PIO_PA5 | AT91C_PIO_PA6;
AIC_ConfigureIT(AT91C_ID_US1,
AT91C_AIC_SRCTYPE_HIGH_LEVEL | SAM7X_USART1_PRIORITY,
USART1IrqHandler);
#endif
}
/**
@ -100,6 +225,28 @@ void sd_lld_start(SerialDriver *sdp, const SerialDriverConfig *config) {
if (config == NULL)
config = &default_config;
#if USE_SAM7X_USART0
if (&COM1 == sdp) {
/* Starts the clock and clears possible sources of immediate interrupts.*/
AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_US0);
/* USART initialization.*/
usart_init(AT91C_BASE_US0, config);
/* Enables associated interrupt vector.*/
AIC_EnableIT(AT91C_ID_US0);
return;
}
#endif
#if USE_SAM7X_USART1
if (&COM2 == sdp) {
/* Starts the clock and clears possible sources of immediate interrupts.*/
AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_US1);
/* USART initialization.*/
usart_init(AT91C_BASE_US1, config);
/* Enables associated interrupt vector.*/
AIC_EnableIT(AT91C_ID_US1);
return;
}
#endif
}
/**
@ -111,6 +258,22 @@ void sd_lld_start(SerialDriver *sdp, const SerialDriverConfig *config) {
*/
void sd_lld_stop(SerialDriver *sdp) {
#if USE_LPC214x_UART1
if (&COM1 == sdp) {
usart_deinit(AT91C_BASE_US0);
AT91C_BASE_PMC->PMC_PCDR = (1 << AT91C_ID_US0);
AIC_DisableIT(AT91C_ID_US0);
return;
}
#endif
#if USE_LPC214x_UART2
if (&COM2 == sdp) {
usart_deinit(AT91C_BASE_US1);
AT91C_BASE_PMC->PMC_PCDR = (1 << AT91C_ID_US1);
AIC_DisableIT(AT91C_ID_US1);
return;
}
#endif
}
/** @} */

22
os/io/platforms/AT91SAM7X/serial_lld.h
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@ -59,6 +59,20 @@
#define USE_SAM7X_USART1 TRUE
#endif
/**
* @brief UART1 interrupt priority level setting.
*/
#if !defined(SAM7X_USART0_PRIORITY) || defined(__DOXYGEN__)
#define SAM7X_USART0_PRIORITY (AT91C_AIC_PRIOR_HIGHEST - 2)
#endif
/**
* @brief UART2 interrupt priority level setting.
*/
#if !defined(SAM7X_USART1_PRIORITY) || defined(__DOXYGEN__)
#define SAM7X_USART1_PRIORITY (AT91C_AIC_PRIOR_HIGHEST - 2)
#endif
/*===========================================================================*/
/* Unsupported event flags and custom events. */
/*===========================================================================*/
@ -124,11 +138,11 @@ typedef struct {
/*===========================================================================*/
/** @cond never*/
#if !defined(USE_SAM7X_USART0)
extern FullDuplexDriver COM1;
#if defined(USE_SAM7X_USART0)
extern SerialDriver COM1;
#endif
#if !defined(USE_SAM7X_USART1)
extern FullDuplexDriver COM2;
#if defined(USE_SAM7X_USART1)
extern SerialDriver COM2;
#endif
#ifdef __cplusplus

1
os/io/platforms/LPC214x/serial_lld.h
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@ -89,7 +89,6 @@
#define LPC214x_UART2_PRIORITY 2
#endif
/*===========================================================================*/
/* Unsupported event flags and custom events. */
/*===========================================================================*/