git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@197 35acf78f-673a-0410-8e92-d51de3d6d3f4
This commit is contained in:
parent
fd1fdffd2a
commit
f87e32d85c
|
@ -62,7 +62,7 @@ UDEFS =
|
|||
UADEFS =
|
||||
|
||||
# List ARM-mode C source files here
|
||||
ASRC = ../../ports/ARM7-AT91SAM7X/GCC/chcore.c \
|
||||
ASRC = ../../ports/ARM7-AT91SAM7X/GCC/chcore.c ../../ports\ARM7-AT91SAM7X\GCC\sam7x_serial.c \
|
||||
../../src/chinit.c ../../src/chdebug.c ../../src/chlists.c ../../src/chdelta.c \
|
||||
../../src/chschd.c ../../src/chthreads.c ../../src/chsem.c ../../src/chmtx.c \
|
||||
../../src/chevents.c ../../src/chmsg.c ../../src/chsleep.c ../../src/chqueues.c \
|
||||
|
|
|
@ -20,6 +20,7 @@
|
|||
#include <ch.h>
|
||||
|
||||
#include "board.h"
|
||||
#include "sam7x_serial.h"
|
||||
#include "at91lib/aic.h"
|
||||
|
||||
extern void FiqHandler(void);
|
||||
|
@ -39,7 +40,6 @@ static void SYSIrqHandler(void) {
|
|||
chSysIRQEnterI();
|
||||
|
||||
if (AT91C_BASE_PITC->PITC_PISR & AT91C_PITC_PITS) {
|
||||
// AT91C_BASE_PIOB->PIO_SODR = PIOB_LCD_BL; // LCD on.
|
||||
chSysTimerHandlerI();
|
||||
(void) AT91C_BASE_PITC->PITC_PIVR;
|
||||
}
|
||||
|
@ -90,9 +90,9 @@ void hwinit(void) {
|
|||
/*
|
||||
* I/O setup, enable clocks, initially all pins are inputs with pullups.
|
||||
*/
|
||||
AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_PIOA) | (1 << AT91C_ID_PIOB);
|
||||
AT91C_BASE_PIOA->PIO_PER = 0xFFFFFFFF;
|
||||
AT91C_BASE_PIOB->PIO_PER = 0xFFFFFFFF;
|
||||
AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_PIOA) | (1 << AT91C_ID_PIOB);
|
||||
AT91C_BASE_PIOA->PIO_PER = 0xFFFFFFFF;
|
||||
AT91C_BASE_PIOB->PIO_PER = 0xFFFFFFFF;
|
||||
|
||||
/*
|
||||
* Default AIC setup, the device drivers will modify it as needed.
|
||||
|
@ -110,30 +110,38 @@ void hwinit(void) {
|
|||
*/
|
||||
AT91C_BASE_PIOB->PIO_CODR = PIOB_LCD_BL; // Set to low.
|
||||
AT91C_BASE_PIOB->PIO_OER = PIOB_LCD_BL; // Configure as output.
|
||||
AT91C_BASE_SYS->PIOA_PPUDR = PIOB_LCD_BL; // Disable internal pullup resistor.
|
||||
AT91C_BASE_PIOA->PIO_PPUDR = PIOB_LCD_BL; // Disable internal pullup resistor.
|
||||
|
||||
AT91C_BASE_PIOA->PIO_SODR = PIOA_LCD_RESET; // Set to high.
|
||||
AT91C_BASE_PIOA->PIO_OER = PIOA_LCD_RESET; // Configure as output.
|
||||
AT91C_BASE_SYS->PIOB_PPUDR = PIOA_LCD_RESET; // Disable internal pullup resistor.
|
||||
AT91C_BASE_PIOA->PIO_PPUDR = PIOA_LCD_RESET; // Disable internal pullup resistor.
|
||||
|
||||
/*
|
||||
* Joystick and buttons, disable pullups, already inputs.
|
||||
*/
|
||||
AT91C_BASE_SYS->PIOA_PPUDR = PIOA_B1 | PIOA_B2 | PIOA_B3 | PIOA_B4 | PIOA_B5;
|
||||
AT91C_BASE_SYS->PIOB_PPUDR = PIOB_SW1 | PIOB_SW2;
|
||||
AT91C_BASE_PIOA->PIO_PPUDR = PIOA_B1 | PIOA_B2 | PIOA_B3 | PIOA_B4 | PIOA_B5;
|
||||
AT91C_BASE_PIOB->PIO_PPUDR = PIOB_SW1 | PIOB_SW2;
|
||||
|
||||
/*
|
||||
* MMC/SD slot, disable pullups, already inputs.
|
||||
*/
|
||||
AT91C_BASE_SYS->PIOB_PPUDR = PIOB_MMC_WP | PIOB_MMC_CP;
|
||||
AT91C_BASE_SYS->PIOB_PPUDR = PIOB_MMC_WP | PIOB_MMC_CP;
|
||||
|
||||
/*
|
||||
* PIT Initialization.
|
||||
*/
|
||||
AIC_ConfigureIT(AT91C_ID_SYS,
|
||||
AT91C_AIC_SRCTYPE_POSITIVE_EDGE | (AT91C_AIC_PRIOR_HIGHEST -1),
|
||||
AT91C_AIC_SRCTYPE_HIGH_LEVEL | (AT91C_AIC_PRIOR_HIGHEST - 1),
|
||||
SYSIrqHandler);
|
||||
AIC_EnableIT(AT91C_ID_SYS);
|
||||
AT91C_BASE_PITC->PITC_PIMR = (MCK / 16 / CH_FREQUENCY) - 1;
|
||||
AT91C_BASE_PITC->PITC_PIMR |= AT91C_PITC_PITEN | AT91C_PITC_PITIEN;
|
||||
|
||||
/*
|
||||
* Serial driver initialization, RTS/CTS pins enabled for USART0 only.
|
||||
*/
|
||||
InitSerial(AT91C_AIC_PRIOR_HIGHEST - 2, AT91C_AIC_PRIOR_HIGHEST - 2);
|
||||
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;
|
||||
}
|
||||
|
|
|
@ -20,6 +20,7 @@
|
|||
#include <ch.h>
|
||||
|
||||
#include "board.h"
|
||||
#include "sam7x_serial.h"
|
||||
|
||||
static WorkingArea(waThread1, 64);
|
||||
static t_msg Thread1(void *arg) {
|
||||
|
@ -37,6 +38,7 @@ static t_msg Thread1(void *arg) {
|
|||
* Entry point, the interrupts are disabled on entry.
|
||||
*/
|
||||
int main(int argc, char **argv) {
|
||||
t_msg TestThread(void *p);
|
||||
|
||||
/*
|
||||
* The main() function becomes a thread here then the interrupts are
|
||||
|
@ -47,7 +49,11 @@ int main(int argc, char **argv) {
|
|||
chThdCreate(NORMALPRIO, 0, waThread1, sizeof(waThread1), Thread1, NULL);
|
||||
|
||||
while (TRUE) {
|
||||
chThdSleep(1000);
|
||||
chThdSleep(500);
|
||||
if (!(AT91C_BASE_PIOB->PIO_PDSR & PIOB_SW1))
|
||||
chFDDWrite(&COM1, (BYTE8 *)"Hello World!\r\n", 14);
|
||||
if (!(AT91C_BASE_PIOB->PIO_PDSR & PIOB_SW2))
|
||||
TestThread(&COM1);
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
|
|
@ -0,0 +1,180 @@
|
|||
/*
|
||||
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
|
||||
|
||||
This file is part of ChibiOS/RT.
|
||||
|
||||
ChibiOS/RT is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 3 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
ChibiOS/RT is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#include <ch.h>
|
||||
|
||||
#include "board.h"
|
||||
#include "sam7x_serial.h"
|
||||
#include "at91lib/aic.h"
|
||||
|
||||
FullDuplexDriver COM1;
|
||||
BYTE8 ib1[SERIAL_BUFFERS_SIZE];
|
||||
BYTE8 ob1[SERIAL_BUFFERS_SIZE];
|
||||
|
||||
FullDuplexDriver COM2;
|
||||
BYTE8 ib2[SERIAL_BUFFERS_SIZE];
|
||||
BYTE8 ob2[SERIAL_BUFFERS_SIZE];
|
||||
|
||||
static void SetError(AT91_REG csr, FullDuplexDriver *com) {
|
||||
UWORD16 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;
|
||||
chFDDAddFlagsI(com, sts);
|
||||
}
|
||||
|
||||
/*
|
||||
* Tries hard to clear all the pending interrupt sources, we dont want to
|
||||
* go through the whole ISR and have another interrupt soon after.
|
||||
*/
|
||||
static void ServeInterrupt(AT91PS_USART u, FullDuplexDriver *com) {
|
||||
|
||||
while (u->US_CSR & u->US_IMR) {
|
||||
|
||||
if (u->US_CSR & AT91C_US_RXRDY) {
|
||||
chFDDIncomingDataI(com, u->US_RHR);
|
||||
}
|
||||
else if (u->US_CSR & AT91C_US_TXRDY) {
|
||||
t_msg b = chFDDRequestDataI(com);
|
||||
if (b < Q_OK)
|
||||
u->US_IDR = AT91C_US_TXRDY;
|
||||
else
|
||||
u->US_THR = b;
|
||||
}
|
||||
else {
|
||||
SetError(u->US_CSR, com);
|
||||
u->US_CR = AT91C_US_RSTSTA;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
__attribute__((naked, weak))
|
||||
void USART0IrqHandler(void) {
|
||||
|
||||
chSysIRQEnterI();
|
||||
|
||||
ServeInterrupt(AT91C_BASE_US0, &COM1);
|
||||
|
||||
chSysIRQExitI();
|
||||
}
|
||||
|
||||
__attribute__((naked, weak))
|
||||
void USART1IrqHandler(void) {
|
||||
|
||||
chSysIRQEnterI();
|
||||
|
||||
ServeInterrupt(AT91C_BASE_US1, &COM2);
|
||||
|
||||
chSysIRQExitI();
|
||||
}
|
||||
|
||||
/*
|
||||
* Invoked by the high driver when one or more bytes are inserted in the
|
||||
* output queue.
|
||||
*/
|
||||
static void OutNotify1(void) {
|
||||
|
||||
AT91C_BASE_US0->US_IER = AT91C_US_TXRDY;
|
||||
}
|
||||
|
||||
/*
|
||||
* Invoked by the high driver when one or more bytes are inserted in the
|
||||
* output queue.
|
||||
*/
|
||||
static void OutNotify2(void) {
|
||||
|
||||
AT91C_BASE_US1->US_IER = AT91C_US_TXRDY;
|
||||
}
|
||||
|
||||
/*
|
||||
* USART setup, must be invoked with interrupts disabled.
|
||||
* NOTE: Does not reset I/O queues.
|
||||
*/
|
||||
void SetUSARTI(AT91PS_USART u, int speed, int mode) {
|
||||
|
||||
/* Disables IRQ sources and stop operations.*/
|
||||
u->US_IDR = 0xFFFFFFFF;
|
||||
u->US_CR = AT91C_US_RSTRX | AT91C_US_RSTTX | AT91C_US_RSTSTA;
|
||||
|
||||
/* New parameters setup.*/
|
||||
if (mode & AT91C_US_OVER)
|
||||
u->US_BRGR = MCK / (speed * 8);
|
||||
else
|
||||
u->US_BRGR = MCK / (speed * 16);
|
||||
u->US_MR = mode;
|
||||
u->US_RTOR = 0;
|
||||
u->US_TTGR = 0;
|
||||
|
||||
/* Enables operations and IRQ sources.*/
|
||||
u->US_CR = AT91C_US_RXEN | AT91C_US_TXEN | AT91C_US_DTREN | AT91C_US_RTSEN;
|
||||
u->US_IER = AT91C_US_RXRDY | AT91C_US_OVRE | AT91C_US_FRAME | AT91C_US_PARE |
|
||||
AT91C_US_RXBRK;
|
||||
}
|
||||
|
||||
/*
|
||||
* Serial subsystem initialization.
|
||||
* NOTE: Handshake pins are not switched to their function because they may have
|
||||
* another use. Enable them externally if needed.
|
||||
*/
|
||||
void InitSerial(int prio0, int prio1) {
|
||||
|
||||
/* I/O queues setup.*/
|
||||
chFDDInit(&COM1, ib1, sizeof ib1, NULL, ob1, sizeof ob1, OutNotify1);
|
||||
chFDDInit(&COM2, ib2, sizeof ib2, NULL, ob2, sizeof ob2, OutNotify2);
|
||||
|
||||
/* Switches the I/O pins to the peripheral function A, disables pullups.*/
|
||||
AT91C_BASE_PIOA->PIO_PDR = AT91C_PA0_RXD0 | AT91C_PA1_TXD0 |
|
||||
AT91C_PA5_RXD1 | AT91C_PA6_TXD1;
|
||||
AT91C_BASE_PIOA->PIO_ASR = AT91C_PIO_PA0 | AT91C_PIO_PA1 |
|
||||
AT91C_PIO_PA5 | AT91C_PIO_PA6;
|
||||
AT91C_BASE_PIOA->PIO_PPUDR = AT91C_PIO_PA0 | AT91C_PIO_PA1 |
|
||||
AT91C_PIO_PA5 | AT91C_PIO_PA6;
|
||||
|
||||
/* Starts the clock and clears possible sources of immediate interrupts.*/
|
||||
AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_US0) | (1 << AT91C_ID_US1);
|
||||
AT91C_BASE_US0->US_CR = AT91C_US_RSTRX | AT91C_US_RSTTX | AT91C_US_RSTSTA;
|
||||
AT91C_BASE_US1->US_CR = AT91C_US_RSTRX | AT91C_US_RSTTX | AT91C_US_RSTSTA;
|
||||
|
||||
/* Interrupts setup.*/
|
||||
AIC_ConfigureIT(AT91C_ID_US0,
|
||||
AT91C_AIC_SRCTYPE_HIGH_LEVEL | prio0,
|
||||
USART0IrqHandler);
|
||||
AIC_EnableIT(AT91C_ID_US0);
|
||||
AIC_ConfigureIT(AT91C_ID_US1,
|
||||
AT91C_AIC_SRCTYPE_HIGH_LEVEL | prio1,
|
||||
USART1IrqHandler);
|
||||
AIC_EnableIT(AT91C_ID_US1);
|
||||
|
||||
SetUSARTI(AT91C_BASE_US0, 38400, AT91C_US_USMODE_NORMAL |
|
||||
AT91C_US_CLKS_CLOCK |
|
||||
AT91C_US_CHRL_8_BITS |
|
||||
AT91C_US_PAR_NONE |
|
||||
AT91C_US_NBSTOP_1_BIT);
|
||||
SetUSARTI(AT91C_BASE_US1, 38400, AT91C_US_USMODE_NORMAL |
|
||||
AT91C_US_CLKS_CLOCK |
|
||||
AT91C_US_CHRL_8_BITS |
|
||||
AT91C_US_PAR_NONE |
|
||||
AT91C_US_NBSTOP_1_BIT);
|
||||
}
|
|
@ -0,0 +1,42 @@
|
|||
/*
|
||||
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
|
||||
|
||||
This file is part of ChibiOS/RT.
|
||||
|
||||
ChibiOS/RT is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 3 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
ChibiOS/RT is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#ifndef _SAM7X_SERIAL_H_
|
||||
#define _SAM7X_SERIAL_H_
|
||||
|
||||
/*
|
||||
* Configuration parameter, you can change the depth of the queue buffers
|
||||
* depending on the requirements of your application.
|
||||
*/
|
||||
#define SERIAL_BUFFERS_SIZE 128
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
void InitSerial(int prio0, int prio1);
|
||||
void UART0IrqHandler(void);
|
||||
void UART1IrqHandler(void);
|
||||
void SetUSARTI(AT91PS_USART u, int speed, int mode);
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
extern FullDuplexDriver COM1, COM2;
|
||||
|
||||
#endif /* _SAM7X_SERIAL_H_ */
|
Loading…
Reference in New Issue