git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@197 35acf78f-673a-0410-8e92-d51de3d6d3f4
This commit is contained in:
gdisirio
parent
fd1fdffd2a
commit
f87e32d85c
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@ -62,7 +62,7 @@ UDEFS =
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UADEFS =
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# List ARM-mode C source files here
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ASRC = ../../ports/ARM7-AT91SAM7X/GCC/chcore.c \
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ASRC = ../../ports/ARM7-AT91SAM7X/GCC/chcore.c ../../ports\ARM7-AT91SAM7X\GCC\sam7x_serial.c \
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../../src/chinit.c ../../src/chdebug.c ../../src/chlists.c ../../src/chdelta.c \
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../../src/chschd.c ../../src/chthreads.c ../../src/chsem.c ../../src/chmtx.c \
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../../src/chevents.c ../../src/chmsg.c ../../src/chsleep.c ../../src/chqueues.c \
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@ -20,6 +20,7 @@
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#include <ch.h>
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#include "board.h"
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#include "sam7x_serial.h"
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#include "at91lib/aic.h"
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extern void FiqHandler(void);
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@ -39,7 +40,6 @@ static void SYSIrqHandler(void) {
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chSysIRQEnterI();
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if (AT91C_BASE_PITC->PITC_PISR & AT91C_PITC_PITS) {
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// AT91C_BASE_PIOB->PIO_SODR = PIOB_LCD_BL; // LCD on.
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chSysTimerHandlerI();
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(void) AT91C_BASE_PITC->PITC_PIVR;
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}
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@ -90,9 +90,9 @@ void hwinit(void) {
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/*
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* I/O setup, enable clocks, initially all pins are inputs with pullups.
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*/
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AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_PIOA) | (1 << AT91C_ID_PIOB);
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AT91C_BASE_PIOA->PIO_PER = 0xFFFFFFFF;
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AT91C_BASE_PIOB->PIO_PER = 0xFFFFFFFF;
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AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_PIOA) | (1 << AT91C_ID_PIOB);
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AT91C_BASE_PIOA->PIO_PER = 0xFFFFFFFF;
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AT91C_BASE_PIOB->PIO_PER = 0xFFFFFFFF;
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/*
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* Default AIC setup, the device drivers will modify it as needed.
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@ -110,30 +110,38 @@ void hwinit(void) {
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*/
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AT91C_BASE_PIOB->PIO_CODR = PIOB_LCD_BL; // Set to low.
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AT91C_BASE_PIOB->PIO_OER = PIOB_LCD_BL; // Configure as output.
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AT91C_BASE_SYS->PIOA_PPUDR = PIOB_LCD_BL; // Disable internal pullup resistor.
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AT91C_BASE_PIOA->PIO_PPUDR = PIOB_LCD_BL; // Disable internal pullup resistor.
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AT91C_BASE_PIOA->PIO_SODR = PIOA_LCD_RESET; // Set to high.
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AT91C_BASE_PIOA->PIO_OER = PIOA_LCD_RESET; // Configure as output.
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AT91C_BASE_SYS->PIOB_PPUDR = PIOA_LCD_RESET; // Disable internal pullup resistor.
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AT91C_BASE_PIOA->PIO_PPUDR = PIOA_LCD_RESET; // Disable internal pullup resistor.
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/*
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* Joystick and buttons, disable pullups, already inputs.
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*/
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AT91C_BASE_SYS->PIOA_PPUDR = PIOA_B1 | PIOA_B2 | PIOA_B3 | PIOA_B4 | PIOA_B5;
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AT91C_BASE_SYS->PIOB_PPUDR = PIOB_SW1 | PIOB_SW2;
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AT91C_BASE_PIOA->PIO_PPUDR = PIOA_B1 | PIOA_B2 | PIOA_B3 | PIOA_B4 | PIOA_B5;
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AT91C_BASE_PIOB->PIO_PPUDR = PIOB_SW1 | PIOB_SW2;
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/*
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* MMC/SD slot, disable pullups, already inputs.
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*/
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AT91C_BASE_SYS->PIOB_PPUDR = PIOB_MMC_WP | PIOB_MMC_CP;
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AT91C_BASE_SYS->PIOB_PPUDR = PIOB_MMC_WP | PIOB_MMC_CP;
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/*
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* PIT Initialization.
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*/
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AIC_ConfigureIT(AT91C_ID_SYS,
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AT91C_AIC_SRCTYPE_POSITIVE_EDGE | (AT91C_AIC_PRIOR_HIGHEST -1),
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AT91C_AIC_SRCTYPE_HIGH_LEVEL | (AT91C_AIC_PRIOR_HIGHEST - 1),
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SYSIrqHandler);
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AIC_EnableIT(AT91C_ID_SYS);
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AT91C_BASE_PITC->PITC_PIMR = (MCK / 16 / CH_FREQUENCY) - 1;
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AT91C_BASE_PITC->PITC_PIMR |= AT91C_PITC_PITEN | AT91C_PITC_PITIEN;
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/*
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* Serial driver initialization, RTS/CTS pins enabled for USART0 only.
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*/
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InitSerial(AT91C_AIC_PRIOR_HIGHEST - 2, AT91C_AIC_PRIOR_HIGHEST - 2);
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AT91C_BASE_PIOA->PIO_PDR = AT91C_PA3_RTS0 | AT91C_PA4_CTS0;
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AT91C_BASE_PIOA->PIO_ASR = AT91C_PIO_PA3 | AT91C_PIO_PA4;
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AT91C_BASE_PIOA->PIO_PPUDR = AT91C_PIO_PA3 | AT91C_PIO_PA4;
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}
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@ -20,6 +20,7 @@
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#include <ch.h>
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#include "board.h"
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#include "sam7x_serial.h"
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static WorkingArea(waThread1, 64);
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static t_msg Thread1(void *arg) {
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@ -37,6 +38,7 @@ static t_msg Thread1(void *arg) {
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* Entry point, the interrupts are disabled on entry.
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*/
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int main(int argc, char **argv) {
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t_msg TestThread(void *p);
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/*
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* The main() function becomes a thread here then the interrupts are
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@ -47,7 +49,11 @@ int main(int argc, char **argv) {
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chThdCreate(NORMALPRIO, 0, waThread1, sizeof(waThread1), Thread1, NULL);
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while (TRUE) {
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chThdSleep(1000);
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chThdSleep(500);
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if (!(AT91C_BASE_PIOB->PIO_PDSR & PIOB_SW1))
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chFDDWrite(&COM1, (BYTE8 *)"Hello World!\r\n", 14);
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if (!(AT91C_BASE_PIOB->PIO_PDSR & PIOB_SW2))
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TestThread(&COM1);
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}
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return 0;
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@ -0,0 +1,180 @@
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/*
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ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <ch.h>
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#include "board.h"
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#include "sam7x_serial.h"
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#include "at91lib/aic.h"
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FullDuplexDriver COM1;
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BYTE8 ib1[SERIAL_BUFFERS_SIZE];
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BYTE8 ob1[SERIAL_BUFFERS_SIZE];
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FullDuplexDriver COM2;
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BYTE8 ib2[SERIAL_BUFFERS_SIZE];
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BYTE8 ob2[SERIAL_BUFFERS_SIZE];
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static void SetError(AT91_REG csr, FullDuplexDriver *com) {
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UWORD16 sts = 0;
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if (csr & AT91C_US_OVRE)
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sts |= SD_OVERRUN_ERROR;
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if (csr & AT91C_US_PARE)
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sts |= SD_PARITY_ERROR;
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if (csr & AT91C_US_FRAME)
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sts |= SD_FRAMING_ERROR;
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if (csr & AT91C_US_RXBRK)
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sts |= SD_BREAK_DETECTED;
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chFDDAddFlagsI(com, sts);
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}
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/*
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* Tries hard to clear all the pending interrupt sources, we dont want to
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* go through the whole ISR and have another interrupt soon after.
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*/
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static void ServeInterrupt(AT91PS_USART u, FullDuplexDriver *com) {
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while (u->US_CSR & u->US_IMR) {
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if (u->US_CSR & AT91C_US_RXRDY) {
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chFDDIncomingDataI(com, u->US_RHR);
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}
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else if (u->US_CSR & AT91C_US_TXRDY) {
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t_msg b = chFDDRequestDataI(com);
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if (b < Q_OK)
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u->US_IDR = AT91C_US_TXRDY;
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else
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u->US_THR = b;
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}
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else {
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SetError(u->US_CSR, com);
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u->US_CR = AT91C_US_RSTSTA;
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}
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}
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}
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__attribute__((naked, weak))
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void USART0IrqHandler(void) {
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chSysIRQEnterI();
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ServeInterrupt(AT91C_BASE_US0, &COM1);
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chSysIRQExitI();
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}
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__attribute__((naked, weak))
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void USART1IrqHandler(void) {
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chSysIRQEnterI();
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ServeInterrupt(AT91C_BASE_US1, &COM2);
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chSysIRQExitI();
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}
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/*
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* Invoked by the high driver when one or more bytes are inserted in the
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* output queue.
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*/
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static void OutNotify1(void) {
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AT91C_BASE_US0->US_IER = AT91C_US_TXRDY;
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}
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/*
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* Invoked by the high driver when one or more bytes are inserted in the
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* output queue.
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*/
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static void OutNotify2(void) {
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AT91C_BASE_US1->US_IER = AT91C_US_TXRDY;
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}
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/*
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* USART setup, must be invoked with interrupts disabled.
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* NOTE: Does not reset I/O queues.
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*/
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void SetUSARTI(AT91PS_USART u, int speed, int mode) {
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/* Disables IRQ sources and stop operations.*/
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u->US_IDR = 0xFFFFFFFF;
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u->US_CR = AT91C_US_RSTRX | AT91C_US_RSTTX | AT91C_US_RSTSTA;
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/* New parameters setup.*/
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if (mode & AT91C_US_OVER)
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u->US_BRGR = MCK / (speed * 8);
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else
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u->US_BRGR = MCK / (speed * 16);
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u->US_MR = mode;
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u->US_RTOR = 0;
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u->US_TTGR = 0;
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/* Enables operations and IRQ sources.*/
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u->US_CR = AT91C_US_RXEN | AT91C_US_TXEN | AT91C_US_DTREN | AT91C_US_RTSEN;
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u->US_IER = AT91C_US_RXRDY | AT91C_US_OVRE | AT91C_US_FRAME | AT91C_US_PARE |
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AT91C_US_RXBRK;
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}
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/*
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* Serial subsystem initialization.
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* NOTE: Handshake pins are not switched to their function because they may have
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* another use. Enable them externally if needed.
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*/
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void InitSerial(int prio0, int prio1) {
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/* I/O queues setup.*/
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chFDDInit(&COM1, ib1, sizeof ib1, NULL, ob1, sizeof ob1, OutNotify1);
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chFDDInit(&COM2, ib2, sizeof ib2, NULL, ob2, sizeof ob2, OutNotify2);
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/* Switches the I/O pins to the peripheral function A, disables pullups.*/
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AT91C_BASE_PIOA->PIO_PDR = AT91C_PA0_RXD0 | AT91C_PA1_TXD0 |
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AT91C_PA5_RXD1 | AT91C_PA6_TXD1;
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AT91C_BASE_PIOA->PIO_ASR = AT91C_PIO_PA0 | AT91C_PIO_PA1 |
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AT91C_PIO_PA5 | AT91C_PIO_PA6;
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AT91C_BASE_PIOA->PIO_PPUDR = AT91C_PIO_PA0 | AT91C_PIO_PA1 |
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AT91C_PIO_PA5 | AT91C_PIO_PA6;
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/* Starts the clock and clears possible sources of immediate interrupts.*/
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AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_US0) | (1 << AT91C_ID_US1);
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AT91C_BASE_US0->US_CR = AT91C_US_RSTRX | AT91C_US_RSTTX | AT91C_US_RSTSTA;
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AT91C_BASE_US1->US_CR = AT91C_US_RSTRX | AT91C_US_RSTTX | AT91C_US_RSTSTA;
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/* Interrupts setup.*/
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AIC_ConfigureIT(AT91C_ID_US0,
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AT91C_AIC_SRCTYPE_HIGH_LEVEL | prio0,
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USART0IrqHandler);
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AIC_EnableIT(AT91C_ID_US0);
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AIC_ConfigureIT(AT91C_ID_US1,
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AT91C_AIC_SRCTYPE_HIGH_LEVEL | prio1,
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USART1IrqHandler);
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AIC_EnableIT(AT91C_ID_US1);
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SetUSARTI(AT91C_BASE_US0, 38400, AT91C_US_USMODE_NORMAL |
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AT91C_US_CLKS_CLOCK |
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AT91C_US_CHRL_8_BITS |
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AT91C_US_PAR_NONE |
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AT91C_US_NBSTOP_1_BIT);
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SetUSARTI(AT91C_BASE_US1, 38400, AT91C_US_USMODE_NORMAL |
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AT91C_US_CLKS_CLOCK |
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AT91C_US_CHRL_8_BITS |
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AT91C_US_PAR_NONE |
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AT91C_US_NBSTOP_1_BIT);
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}
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@ -0,0 +1,42 @@
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/*
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ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _SAM7X_SERIAL_H_
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#define _SAM7X_SERIAL_H_
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/*
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* Configuration parameter, you can change the depth of the queue buffers
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* depending on the requirements of your application.
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*/
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#define SERIAL_BUFFERS_SIZE 128
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#ifdef __cplusplus
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}
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#endif
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void InitSerial(int prio0, int prio1);
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void UART0IrqHandler(void);
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void UART1IrqHandler(void);
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void SetUSARTI(AT91PS_USART u, int speed, int mode);
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#ifdef __cplusplus
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}
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#endif
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extern FullDuplexDriver COM1, COM2;
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#endif /* _SAM7X_SERIAL_H_ */
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