git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/kernel_3_dev@6108 35acf78f-673a-0410-8e92-d51de3d6d3f4

1 files changed, 0 insertions, 444 deletions

diff --git a/os/hal/platforms/AT91SAM7/serial_lld.c b/os/hal/platforms/AT91SAM7/serial_lld.c
deleted file mode 100644
index e586a6342..000000000
--- a/os/hal/platforms/AT91SAM7/serial_lld.c
+++ /dev/null
@@ -1,444 +0,0 @@
-/*

-    ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio

-

-    Licensed under the Apache License, Version 2.0 (the "License");

-    you may not use this file except in compliance with the License.

-    You may obtain a copy of the License at

-

-        http://www.apache.org/licenses/LICENSE-2.0

-

-    Unless required by applicable law or agreed to in writing, software

-    distributed under the License is distributed on an "AS IS" BASIS,

-    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

-    See the License for the specific language governing permissions and

-    limitations under the License.

-*/

-

-/**

- * @file    AT91SAM7/serial_lld.c

- * @brief   AT91SAM7 low level serial driver code.

- *

- * @addtogroup SERIAL

- * @{

- */

-

-#include "ch.h"

-#include "hal.h"

-

-#if HAL_USE_SERIAL || defined(__DOXYGEN__)

-

-#if (SAM7_PLATFORM == SAM7S64) || (SAM7_PLATFORM == SAM7S128) ||            \

-    (SAM7_PLATFORM == SAM7S256) || (SAM7_PLATFORM == SAM7S512)

-

-#define SAM7_USART0_RX    AT91C_PA5_RXD0

-#define SAM7_USART0_TX    AT91C_PA6_TXD0

-#define SAM7_USART1_RX    AT91C_PA21_RXD1

-#define SAM7_USART1_TX    AT91C_PA22_TXD1

-#define SAM7_DBGU_RX      AT91C_PA9_DRXD

-#define SAM7_DBGU_TX      AT91C_PA10_DTXD

-

-#elif (SAM7_PLATFORM == SAM7X128) || (SAM7_PLATFORM == SAM7X256) ||         \

-      (SAM7_PLATFORM == SAM7X512)

-

-#define SAM7_USART0_RX    AT91C_PA0_RXD0

-#define SAM7_USART0_TX    AT91C_PA1_TXD0

-#define SAM7_USART1_RX    AT91C_PA5_RXD1

-#define SAM7_USART1_TX    AT91C_PA6_TXD1

-#define SAM7_DBGU_RX      AT91C_PA27_DRXD

-#define SAM7_DBGU_TX      AT91C_PA28_DTXD

-

-#elif (SAM7_PLATFORM == SAM7A3)

-#define SAM7_USART0_RX    AT91C_PA2_RXD0

-#define SAM7_USART0_TX    AT91C_PA3_TXD0

-#define SAM7_USART1_RX    AT91C_PA7_RXD1

-#define SAM7_USART1_TX    AT91C_PA8_TXD1

-#define SAM7_USART2_RX    AT91C_PA9_RXD2

-#define SAM7_USART2_TX    AT91C_PA10_TXD2

-#define SAM7_DBGU_RX      AT91C_PA30_DRXD

-#define SAM7_DBGU_TX      AT91C_PA31_DTXD

-

-#else

-#error "serial lines not defined for this SAM7 version"

-#endif /* HAL_USE_SERIAL */

-

-/*===========================================================================*/

-/* Driver exported variables.                                                */

-/*===========================================================================*/

-

-#if USE_SAM7_USART0 || defined(__DOXYGEN__)

-/** @brief USART0 serial driver identifier.*/

-SerialDriver SD1;

-#endif

-

-#if USE_SAM7_USART1 || defined(__DOXYGEN__)

-/** @brief USART1 serial driver identifier.*/

-SerialDriver SD2;

-#endif

-

-#if (SAM7_PLATFORM == SAM7A3)

-#if USE_SAM7_USART2 || defined(__DOXYGEN__)

-/** @brief USART2 serial driver identifier.*/

-SerialDriver SD3;

-#endif

-#endif

-

-#if USE_SAM7_DBGU_UART || defined(__DOXYGEN__)

-/** @brief DBGU_UART serial driver identifier.*/

-SerialDriver SDDBG;

-#endif

-

-/*===========================================================================*/

-/* Driver local variables and types.                                         */

-/*===========================================================================*/

-

-/** @brief Driver default configuration.*/

-static const SerialConfig default_config = {

-  SERIAL_DEFAULT_BITRATE,

-  AT91C_US_USMODE_NORMAL | AT91C_US_CLKS_CLOCK |

-  AT91C_US_CHRL_8_BITS | AT91C_US_PAR_NONE | AT91C_US_NBSTOP_1_BIT

-};

-

-/*===========================================================================*/

-/* Driver local functions.                                                   */

-/*===========================================================================*/

-

-/**

- * @brief   USART initialization.

- *

- * @param[in] sdp       communication channel associated to the USART

- * @param[in] config    the architecture-dependent serial driver configuration

- */

-static void usart_init(SerialDriver *sdp, const SerialConfig *config) {

-  AT91PS_USART u = sdp->usart;

-

-  /* 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 (config->sc_mr & AT91C_US_OVER)

-    u->US_BRGR = MCK / (config->sc_speed * 8);

-  else

-    u->US_BRGR = MCK / (config->sc_speed * 16);

-  u->US_MR = config->sc_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   USART de-initialization.

- *

- * @param[in] u         pointer to an USART I/O block

- */

-static 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(SerialDriver *sdp, AT91_REG csr) {

-  flagsmask_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();

-  chnAddFlagsI(sdp, sts);

-  chSysUnlockFromIsr();

-}

-

-#if defined(__GNUC__)

-__attribute__((noinline))

-#endif

-#if !USE_SAM7_DBGU_UART

-static

-#endif

-/**

- * @brief   Common IRQ handler.

- *

- * @param[in] sdp       communication channel associated to the USART

- */

-void sd_lld_serve_interrupt(SerialDriver *sdp) {

-  uint32_t csr;

-  AT91PS_USART u = sdp->usart;

-

-  csr = u->US_CSR;

-  if (csr & AT91C_US_RXRDY) {

-    chSysLockFromIsr();

-    sdIncomingDataI(sdp, u->US_RHR);

-    chSysUnlockFromIsr();

-  }

-  if ((u->US_IMR & AT91C_US_TXRDY) && (csr & AT91C_US_TXRDY)) {

-    msg_t b;

-

-    chSysLockFromIsr();

-    b = chOQGetI(&sdp->oqueue);

-    if (b < Q_OK) {

-      chnAddFlagsI(sdp, CHN_OUTPUT_EMPTY);

-      u->US_IDR = AT91C_US_TXRDY;

-    }

-    else

-      u->US_THR = b;

-    chSysUnlockFromIsr();

-  }

-  csr &= (AT91C_US_OVRE | AT91C_US_FRAME | AT91C_US_PARE | AT91C_US_RXBRK);

-  if (csr != 0) {

-    set_error(sdp, csr);

-    u->US_CR = AT91C_US_RSTSTA;

-  }

-  AT91C_BASE_AIC->AIC_EOICR = 0;

-}

-

-#if USE_SAM7_USART0 || defined(__DOXYGEN__)

-static void notify1(GenericQueue *qp) {

-

-  (void)qp;

-  AT91C_BASE_US0->US_IER = AT91C_US_TXRDY;

-}

-#endif

-

-#if USE_SAM7_USART1 || defined(__DOXYGEN__)

-static void notify2(GenericQueue *qp) {

-

-  (void)qp;

-  AT91C_BASE_US1->US_IER = AT91C_US_TXRDY;

-}

-#endif

-

-#if (SAM7_PLATFORM == SAM7A3)

-#if USE_SAM7_USART2 || defined(__DOXYGEN__)

-static void notify3(GenericQueue *qp) {

-

-  (void)qp;

-  AT91C_BASE_US2->US_IER = AT91C_US_TXRDY;

-}

-#endif

-#endif /* (SAM7_PLATFORM == SAM7A3) */

-

-#if USE_SAM7_DBGU_UART || defined(__DOXYGEN__)

-static void notify_dbg(GenericQueue *qp) {

-

-  (void)qp;

-  AT91C_BASE_DBGU->DBGU_IER = AT91C_US_TXRDY;

-}

-#endif

-

-/*===========================================================================*/

-/* Driver interrupt handlers.                                                */

-/*===========================================================================*/

-

-#if USE_SAM7_USART0 || defined(__DOXYGEN__)

-/**

- * @brief   USART0 interrupt handler.

- *

- * @isr

- */

-CH_IRQ_HANDLER(USART0IrqHandler) {

-

-  CH_IRQ_PROLOGUE();

-  sd_lld_serve_interrupt(&SD1);

-  AT91C_BASE_AIC->AIC_EOICR = 0;

-  CH_IRQ_EPILOGUE();

-}

-#endif

-

-#if USE_SAM7_USART1 || defined(__DOXYGEN__)

-/**

- * @brief   USART1 interrupt handler.

- *

- * @isr

- */

-CH_IRQ_HANDLER(USART1IrqHandler) {

-

-  CH_IRQ_PROLOGUE();

-  sd_lld_serve_interrupt(&SD2);

-  AT91C_BASE_AIC->AIC_EOICR = 0;

-  CH_IRQ_EPILOGUE();

-}

-#endif

-

-#if (SAM7_PLATFORM == SAM7A3)

-#if USE_SAM7_USART2 || defined(__DOXYGEN__)

-/**

- * @brief   USART2 interrupt handler.

- *

- * @isr

- */

-CH_IRQ_HANDLER(USART2IrqHandler) {

-

-  CH_IRQ_PROLOGUE();

-  sd_lld_serve_interrupt(&SD3);

-  AT91C_BASE_AIC->AIC_EOICR = 0;

-  CH_IRQ_EPILOGUE();

-}

-#endif

-#endif /* (SAM7_PLATFORM == SAM7A3) */

-

-/* note - DBGU_UART IRQ is the SysIrq in board.c

-   since it's not vectored separately by the AIC.*/

-

-/*===========================================================================*/

-/* Driver exported functions.                                                */

-/*===========================================================================*/

-

-/**

- * @brief   Low level serial driver initialization.

- *

- * @notapi

- */

-void sd_lld_init(void) {

-

-#if USE_SAM7_USART0

-  sdObjectInit(&SD1, NULL, notify1);

-  SD1.usart = AT91C_BASE_US0;

-  AT91C_BASE_PIOA->PIO_PDR   = SAM7_USART0_RX | SAM7_USART0_TX;

-  AT91C_BASE_PIOA->PIO_ASR   = SAM7_USART0_RX | SAM7_USART0_TX;

-  AT91C_BASE_PIOA->PIO_PPUDR = SAM7_USART0_RX | SAM7_USART0_TX;

-  AIC_ConfigureIT(AT91C_ID_US0,

-                  AT91C_AIC_SRCTYPE_HIGH_LEVEL | SAM7_USART0_PRIORITY,

-                  USART0IrqHandler);

-#endif

-

-#if USE_SAM7_USART1

-  sdObjectInit(&SD2, NULL, notify2);

-  SD2.usart = AT91C_BASE_US1;

-  AT91C_BASE_PIOA->PIO_PDR   = SAM7_USART1_RX | SAM7_USART1_TX;

-  AT91C_BASE_PIOA->PIO_ASR   = SAM7_USART1_RX | SAM7_USART1_TX;

-  AT91C_BASE_PIOA->PIO_PPUDR = SAM7_USART1_RX | SAM7_USART1_TX;

-  AIC_ConfigureIT(AT91C_ID_US1,

-                  AT91C_AIC_SRCTYPE_HIGH_LEVEL | SAM7_USART1_PRIORITY,

-                  USART1IrqHandler);

-#endif

-

-#if (SAM7_PLATFORM == SAM7A3)

-#if USE_SAM7_USART2

-  sdObjectInit(&SD3, NULL, notify3);

-  SD3.usart = AT91C_BASE_US2;

-  AT91C_BASE_PIOA->PIO_PDR   = SAM7_USART2_RX | SAM7_USART2_TX;

-  AT91C_BASE_PIOA->PIO_ASR   = SAM7_USART2_RX | SAM7_USART2_TX;

-  AT91C_BASE_PIOA->PIO_PPUDR = SAM7_USART2_RX | SAM7_USART2_TX;

-  AIC_ConfigureIT(AT91C_ID_US2,

-                  AT91C_AIC_SRCTYPE_HIGH_LEVEL | SAM7_USART2_PRIORITY,

-                  USART2IrqHandler);

-#endif

-#endif /* (SAM7_PLATFORM == SAM7A3) */

-

-#if USE_SAM7_DBGU_UART

-  sdObjectInit(&SDDBG, NULL, notify_dbg);

-  /* this is a little cheap, but OK for now since there's enough overlap

-     between dbgu and usart register maps.  it means we can reuse all the

-     same usart interrupt handling and config that already exists.*/

-  SDDBG.usart = (AT91PS_USART)AT91C_BASE_DBGU;

-  AT91C_BASE_PIOA->PIO_PDR   = SAM7_DBGU_RX | SAM7_DBGU_TX;

-  AT91C_BASE_PIOA->PIO_ASR   = SAM7_DBGU_RX | SAM7_DBGU_TX;

-  AT91C_BASE_PIOA->PIO_PPUDR = SAM7_DBGU_RX | SAM7_DBGU_TX;

-#endif

-}

-

-/**

- * @brief   Low level serial driver configuration and (re)start.

- *

- * @param[in] sdp       pointer to a @p SerialDriver object

- * @param[in] config    the architecture-dependent serial driver configuration.

- *                      If this parameter is set to @p NULL then a default

- *                      configuration is used.

- *

- * @notapi

- */

-void sd_lld_start(SerialDriver *sdp, const SerialConfig *config) {

-

-  if (config == NULL)

-    config = &default_config;

-

-  if (sdp->state == SD_STOP) {

-#if USE_SAM7_USART0

-    if (&SD1 == sdp) {

-      /* Starts the clock and clears possible sources of immediate interrupts.*/

-      AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_US0);

-      /* Enables associated interrupt vector.*/

-      AIC_EnableIT(AT91C_ID_US0);

-    }

-#endif

-#if USE_SAM7_USART1

-    if (&SD2 == sdp) {

-      /* Starts the clock and clears possible sources of immediate interrupts.*/

-      AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_US1);

-      /* Enables associated interrupt vector.*/

-      AIC_EnableIT(AT91C_ID_US1);

-    }

-#endif

-#if (SAM7_PLATFORM == SAM7A3)

-#if USE_SAM7_USART2

-    if (&SD3 == sdp) {

-      /* Starts the clock and clears possible sources of immediate interrupts.*/

-      AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_US2);

-      /* Enables associated interrupt vector.*/

-      AIC_EnableIT(AT91C_ID_US2);

-    }

-#endif

-#endif /* (SAM7_PLATFORM == SAM7A3) */

-  /* Note - no explicit start for SD3 (DBGU_UART) since it's not included

-     in the AIC or PMC.*/

-  }

-  usart_init(sdp, config);

-}

-

-/**

- * @brief   Low level serial driver stop.

- * @details De-initializes the USART, stops the associated clock, resets the

- *          interrupt vector.

- *

- * @param[in] sdp       pointer to a @p SerialDriver object

- *

- * @notapi

- */

-void sd_lld_stop(SerialDriver *sdp) {

-

-  if (sdp->state == SD_READY) {

-    usart_deinit(sdp->usart);

-#if USE_SAM7_USART0

-    if (&SD1 == sdp) {

-      AT91C_BASE_PMC->PMC_PCDR = (1 << AT91C_ID_US0);

-      AIC_DisableIT(AT91C_ID_US0);

-      return;

-    }

-#endif

-#if USE_SAM7_USART1

-    if (&SD2 == sdp) {

-      AT91C_BASE_PMC->PMC_PCDR = (1 << AT91C_ID_US1);

-      AIC_DisableIT(AT91C_ID_US1);

-      return;

-    }

-#endif

-#if USE_SAM7_DBGU_UART

-    if (&SDDBG == sdp) {

-      AT91C_BASE_DBGU->DBGU_IDR = 0xFFFFFFFF;

-      return;

-    }

-#endif

-  }

-}

-

-#endif /* HAL_USE_SERIAL */

-

-/** @} */