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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011 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 "hal.h"
/**
* @brief PAL setup.
* @details Digital I/O ports static configuration as defined in @p board.h.
* This variable is used by the HAL when initializing the PAL driver.
*/
#if HAL_USE_PAL || defined(__DOXYGEN__)
const PALConfig pal_default_config =
{
{VAL_PIOA_ODSR, VAL_PIOA_OSR, VAL_PIOA_PUSR},
#if (SAM7_PLATFORM == SAM7X128) || (SAM7_PLATFORM == SAM7X256) || \
(SAM7_PLATFORM == SAM7X512)
{VAL_PIOB_ODSR, VAL_PIOB_OSR, VAL_PIOB_PUSR}
#endif
};
#endif
/*
* SYS IRQ handling here.
*/
static CH_IRQ_HANDLER(SYSIrqHandler) {
CH_IRQ_PROLOGUE();
if (AT91C_BASE_PITC->PITC_PISR & AT91C_PITC_PITS) {
(void) AT91C_BASE_PITC->PITC_PIVR;
chSysLockFromIsr();
chSysTimerHandlerI();
chSysUnlockFromIsr();
}
#if USE_SAM7_DBGU_UART
if (AT91C_BASE_DBGU->DBGU_CSR &
(AT91C_US_RXRDY | AT91C_US_TXRDY | AT91C_US_PARE | AT91C_US_FRAME | AT91C_US_OVRE | AT91C_US_RXBRK)) {
sd_lld_serve_interrupt(&SD3);
}
#endif
AT91C_BASE_AIC->AIC_EOICR = 0;
CH_IRQ_EPILOGUE();
}
/*
* Early initialization code.
* This initialization must be performed just after stack setup and before
* any other initialization.
*/
void __early_init(void) {
/* Watchdog disabled.*/
AT91C_BASE_WDTC->WDTC_WDMR = AT91C_WDTC_WDDIS;
at91sam7_clock_init();
}
/*
* Board-specific initialization code.
*/
void boardInit(void) {
/*
* LCD pins setup.
*/
palClearPad(IOPORT2, PIOB_LCD_BL);
palSetPadMode(IOPORT2, PIOB_LCD_BL, PAL_MODE_OUTPUT_PUSHPULL);
palSetPad(IOPORT1, PIOA_LCD_RESET);
palSetPadMode(IOPORT1, PIOA_LCD_RESET, PAL_MODE_OUTPUT_PUSHPULL);
/*
* Joystick and buttons setup.
*/
palSetGroupMode(IOPORT1,
PIOA_B1_MASK | PIOA_B2_MASK | PIOA_B3_MASK |
PIOA_B4_MASK | PIOA_B5_MASK,
PAL_MODE_INPUT);
palSetGroupMode(IOPORT2, PIOB_SW1_MASK | PIOB_SW2_MASK, PAL_MODE_INPUT);
/*
* MMC/SD slot setup.
*/
palSetGroupMode(IOPORT2,
PIOB_MMC_WP_MASK | PIOB_MMC_CP_MASK,
PAL_MODE_INPUT);
/*
* PIT Initialization.
*/
AIC_ConfigureIT(AT91C_ID_SYS,
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;
/*
* RTS/CTS pins enabled for USART0 only.
*/
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;
}
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