diff options
Diffstat (limited to 'ports/ARM7-AT91SAM7X/sam7x_serial.c')
| -rw-r--r-- | ports/ARM7-AT91SAM7X/sam7x_serial.c | 224 |
1 files changed, 0 insertions, 224 deletions
diff --git a/ports/ARM7-AT91SAM7X/sam7x_serial.c b/ports/ARM7-AT91SAM7X/sam7x_serial.c deleted file mode 100644 index 91aaf2f0e..000000000 --- a/ports/ARM7-AT91SAM7X/sam7x_serial.c +++ /dev/null @@ -1,224 +0,0 @@ -/*
- 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/>.
-*/
-
-/**
- * @file ports/ARM7-AT91SAM7X/sam7x_serial.c
- * @brief AT91SAM7X Serial driver code.
- * @addtogroup AT91SAM7X_SERIAL
- * @{
- */
-
-#include <ch.h>
-
-#include "board.h"
-#include "sam7x_serial.h"
-#include "at91lib/aic.h"
-
-#if USE_SAM7X_USART0 || defined(__DOXYGEN__)
-/** @brief USART0 serial driver identifier.*/
-FullDuplexDriver COM1;
-
-static uint8_t ib1[SERIAL_BUFFERS_SIZE];
-static uint8_t ob1[SERIAL_BUFFERS_SIZE];
-#endif
-
-#if USE_SAM7X_USART1 || defined(__DOXYGEN__)
-/** @brief USART1 serial driver identifier.*/
-FullDuplexDriver COM2;
-
-static uint8_t ib2[SERIAL_BUFFERS_SIZE];
-static uint8_t ob2[SERIAL_BUFFERS_SIZE];
-#endif
-
-static void SetError(AT91_REG csr, FullDuplexDriver *com) {
- dflags_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();
- chFDDAddFlagsI(com, sts);
- chSysUnlockFromIsr();
-}
-
-/** @cond never*/
-__attribute__((noinline))
-/** @endcond*/
-/**
- * @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 ServeInterrupt(AT91PS_USART u, FullDuplexDriver *com) {
-
- if (u->US_CSR & AT91C_US_RXRDY) {
- chSysLockFromIsr();
- chFDDIncomingDataI(com, u->US_RHR);
- chSysUnlockFromIsr();
- }
- if (u->US_CSR & AT91C_US_TXRDY) {
- chSysLockFromIsr();
- msg_t b = chFDDRequestDataI(com);
- 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)) {
- SetError(u->US_CSR, com);
- u->US_CR = AT91C_US_RSTSTA;
- }
- AT91C_BASE_AIC->AIC_EOICR = 0;
-}
-
-#if USE_SAM7X_USART0 || defined(__DOXYGEN__)
-CH_IRQ_HANDLER(USART0IrqHandler) {
-
- CH_IRQ_PROLOGUE();
-
- ServeInterrupt(AT91C_BASE_US0, &COM1);
-
- CH_IRQ_EPILOGUE();
-}
-
-static void OutNotify1(void) {
-
- AT91C_BASE_US0->US_IER = AT91C_US_TXRDY;
-}
-#endif
-
-#if USE_SAM7X_USART1 || defined(__DOXYGEN__)
-CH_IRQ_HANDLER(USART1IrqHandler) {
-
- CH_IRQ_PROLOGUE();
-
- ServeInterrupt(AT91C_BASE_US1, &COM2);
-
- CH_IRQ_EPILOGUE();
-}
-
-static void OutNotify2(void) {
-
- AT91C_BASE_US1->US_IER = AT91C_US_TXRDY;
-}
-#endif
-
-/**
- * @brief USART setup.
- * @param[in] u pointer to an UART I/O block
- * @param[in] speed serial port speed in bits per second
- * @param[in] mr the value for the @p MR register
- * @note Must be invoked with interrupts disabled.
- * @note Does not reset the I/O queues.
- */
-void usart_setup(AT91PS_USART u, int speed, int mr) {
-
- /* 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 (mr & AT91C_US_OVER)
- u->US_BRGR = MCK / (speed * 8);
- else
- u->US_BRGR = MCK / (speed * 16);
- u->US_MR = mr;
- 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;
-}
-
-/**
- * @brief Serial driver initialization.
- * @param[in] prio0 priority to be assigned to the USART1 IRQ
- * @param[in] prio1 priority to be assigned to the USART2 IRQ
- * @note Handshake pads are not enabled inside this function because they
- * may have another use, enable them externally if needed.
- * RX and TX pads are handled inside.
- */
-void serial_init(int prio0, int prio1) {
-
-#if USE_SAM7X_USART0 || defined(__DOXYGEN__)
- /* I/O queue setup.*/
- chFDDInit(&COM1, ib1, sizeof ib1, NULL, ob1, sizeof ob1, OutNotify1);
-
- /* Switches the I/O pins to the peripheral function A, disables pullups.*/
- 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;
-
- /* Starts the clock and clears possible sources of immediate interrupts.*/
- AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_US0);
- AT91C_BASE_US0->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);
-
- /* Default parameters.*/
- usart_setup(AT91C_BASE_US0, DEFAULT_USART_BITRATE,
- AT91C_US_USMODE_NORMAL |
- AT91C_US_CLKS_CLOCK |
- AT91C_US_CHRL_8_BITS |
- AT91C_US_PAR_NONE |
- AT91C_US_NBSTOP_1_BIT);
-#endif
-
-#if USE_SAM7X_USART1 || defined(__DOXYGEN__)
- /* I/O queues setup.*/
- 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_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;
-
- /* Starts the clock and clears possible sources of immediate interrupts.*/
- AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_US1);
- AT91C_BASE_US1->US_CR = AT91C_US_RSTRX | AT91C_US_RSTTX | AT91C_US_RSTSTA;
-
- /* Interrupts setup.*/
- AIC_ConfigureIT(AT91C_ID_US1,
- AT91C_AIC_SRCTYPE_HIGH_LEVEL | prio1,
- USART1IrqHandler);
- AIC_EnableIT(AT91C_ID_US1);
-
- /* Default parameters.*/
- usart_setup(AT91C_BASE_US1, DEFAULT_USART_BITRATE,
- AT91C_US_USMODE_NORMAL |
- AT91C_US_CLKS_CLOCK |
- AT91C_US_CHRL_8_BITS |
- AT91C_US_PAR_NONE |
- AT91C_US_NBSTOP_1_BIT);
-#endif
-}
-
-/** @} */
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