diff options
Diffstat (limited to 'os/hal/platforms/MSP430/serial_lld.c')
| -rw-r--r-- | os/hal/platforms/MSP430/serial_lld.c | 328 |
1 files changed, 0 insertions, 328 deletions
diff --git a/os/hal/platforms/MSP430/serial_lld.c b/os/hal/platforms/MSP430/serial_lld.c deleted file mode 100644 index ed17c45c2..000000000 --- a/os/hal/platforms/MSP430/serial_lld.c +++ /dev/null @@ -1,328 +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 MSP430/serial_lld.c
- * @brief MSP430 low level serial driver code.
- *
- * @addtogroup SERIAL
- * @{
- */
-
-#include "ch.h"
-#include "hal.h"
-
-#if HAL_USE_SERIAL || defined(__DOXYGEN__)
-
-/*===========================================================================*/
-/* Driver exported variables. */
-/*===========================================================================*/
-
-#if USE_MSP430_USART0 || defined(__DOXYGEN__)
-/** @brief USART0 serial driver identifier.*/
-SerialDriver SD1;
-#endif
-#if USE_MSP430_USART1 || defined(__DOXYGEN__)
-/** @brief USART1 serial driver identifier.*/
-SerialDriver SD2;
-#endif
-
-/*===========================================================================*/
-/* Driver local variables and types. */
-/*===========================================================================*/
-
-/** @brief Driver default configuration.*/
-static const SerialConfig default_config = {
- UBR(SERIAL_DEFAULT_BITRATE),
- 0,
- CHAR
-};
-
-/*===========================================================================*/
-/* Driver local functions. */
-/*===========================================================================*/
-
-static void set_error(SerialDriver *sdp, uint8_t urctl) {
- flagsmask_t sts = 0;
-
- if (urctl & OE)
- sts |= SD_OVERRUN_ERROR;
- if (urctl & PE)
- sts |= SD_PARITY_ERROR;
- if (urctl & FE)
- sts |= SD_FRAMING_ERROR;
- if (urctl & BRK)
- sts |= SD_BREAK_DETECTED;
- chSysLockFromIsr();
- chnAddFlagsI(sdp, sts);
- chSysUnlockFromIsr();
-}
-
-#if USE_MSP430_USART0 || defined(__DOXYGEN__)
-static void notify1(GenericQueue *qp) {
-
- (void)qp;
- if (!(U0IE & UTXIE0)) {
- msg_t b = sdRequestDataI(&SD1);
- if (b != Q_EMPTY) {
- U0IE |= UTXIE0;
- U0TXBUF = (uint8_t)b;
- }
- }
-}
-
-/**
- * @brief USART0 initialization.
- *
- * @param[in] config the architecture-dependent serial driver configuration
- */
-static void usart0_init(const SerialConfig *config) {
-
- U0CTL = SWRST; /* Resets the USART. */
- /* USART init */
- U0TCTL = SSEL0 | SSEL1; /* SMCLK as clock source. */
- U0MCTL = config->sc_mod; /* Modulator. */
- U0BR1 = (uint8_t)(config->sc_div >> 8); /* Divider high. */
- U0BR0 = (uint8_t)(config->sc_div >> 0); /* Divider low. */
- /* Clear USART status.*/
- (void)U0RXBUF;
- U0RCTL = 0;
- /* USART enable.*/
- U0ME |= UTXE0 + URXE0; /* Enables the USART. */
- U0CTL = config->sc_ctl & ~SWRST; /* Various settings. */
- U0IE |= URXIE0; /* Enables RX interrupt. */
-}
-
-/**
- * @brief USART0 de-initialization.
- */
-static void usart0_deinit(void) {
-
- U0IE &= ~URXIE0;
- U0CTL = SWRST;
-}
-#endif /* USE_MSP430_USART0 */
-
-#if USE_MSP430_USART1 || defined(__DOXYGEN__)
-static void notify2(GenericQueue *qp) {
-
- (void)qp;
- if (!(U1IE & UTXIE1)) {
- msg_t b = sdRequestDataI(&SD2);
- if (b != Q_EMPTY) {
- U1IE |= UTXIE1;
- U1TXBUF = (uint8_t)b;
- }
- }
-}
-
-/**
- * @brief USART1 initialization.
- *
- * @param[in] config the architecture-dependent serial driver configuration
- */
-static void usart1_init(const SerialConfig *config) {
-
- U1CTL = SWRST; /* Resets the USART. */
- /* USART init.*/
- U1TCTL = SSEL0 | SSEL1; /* SMCLK as clock source. */
- U1MCTL = config->sc_mod; /* Modulator. */
- U1BR1 = (uint8_t)(config->sc_div >> 8); /* Divider high. */
- U1BR0 = (uint8_t)(config->sc_div >> 0); /* Divider low. */
- /* Clear USART status.*/
- (void)U0RXBUF;
- U1RCTL = 0;
- /* USART enable.*/
- U1ME |= UTXE0 + URXE0; /* Enables the USART. */
- U1CTL = config->sc_ctl & ~SWRST; /* Various settings. */
- U1IE |= URXIE0; /* Enables RX interrupt. */
-}
-
-/**
- * @brief USART1 de-initialization.
- */
-static void usart1_deinit(void) {
-
- U1IE &= ~URXIE0;
- U1CTL = SWRST;
-}
-#endif /* USE_MSP430_USART1 */
-
-/*===========================================================================*/
-/* Driver interrupt handlers. */
-/*===========================================================================*/
-
-#if USE_MSP430_USART0 || defined(__DOXYGEN__)
-/**
- * @brief USART0 TX interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(USART0TX) {
- msg_t b;
-
- CH_IRQ_PROLOGUE();
-
- chSysLockFromIsr();
- b = sdRequestDataI(&SD1);
- chSysUnlockFromIsr();
- if (b < Q_OK)
- U0IE &= ~UTXIE0;
- else
- U0TXBUF = b;
-
- CH_IRQ_EPILOGUE();
-}
-
-/**
- * @brief USART0 RX interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(USART0RX) {
- uint8_t urctl;
-
- CH_IRQ_PROLOGUE();
-
- if ((urctl = U0RCTL) & RXERR)
- set_error(&SD1, urctl);
- chSysLockFromIsr();
- sdIncomingDataI(&SD1, U0RXBUF);
- chSysUnlockFromIsr();
-
- CH_IRQ_EPILOGUE();
-}
-#endif /* USE_MSP430_USART0 */
-
-#if USE_MSP430_USART1 || defined(__DOXYGEN__)
-/**
- * @brief USART1 TX interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(USART1TX_VECTOR) {
- msg_t b;
-
- CH_IRQ_PROLOGUE();
-
- chSysLockFromIsr();
- b = sdRequestDataI(&SD2);
- chSysUnlockFromIsr();
- if (b < Q_OK)
- U1IE &= ~UTXIE1;
- else
- U1TXBUF = b;
-
- CH_IRQ_EPILOGUE();
-}
-
-/**
- * @brief USART1 RX interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(USART1RX_VECTOR) {
- uint8_t urctl;
-
- CH_IRQ_PROLOGUE();
-
- if ((urctl = U1RCTL) & RXERR)
- set_error(&SD2, urctl);
- chSysLockFromIsr();
- sdIncomingDataI(&SD2, U1RXBUF);
- chSysUnlockFromIsr();
-
- CH_IRQ_EPILOGUE();
-}
-#endif /* USE_MSP430_USART1 */
-
-/*===========================================================================*/
-/* Driver exported functions. */
-/*===========================================================================*/
-
-/**
- * @brief Low level serial driver initialization.
- *
- * @notapi
- */
-void sd_lld_init(void) {
-
-#if USE_MSP430_USART0
- sdObjectInit(&SD1, NULL, notify1);
-#endif
-
-#if USE_MSP430_USART1
- sdObjectInit(&SD2, NULL, notify2);
-#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 USE_MSP430_USART0
- if (&SD1 == sdp) {
- usart0_init(config);
- return;
- }
-#endif
-#if USE_MSP430_USART1
- if (&SD2 == sdp) {
- usart1_init(config);
- return;
- }
-#endif
-}
-
-/**
- * @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 USE_MSP430_USART0
- if (&SD1 == sdp) {
- usart0_deinit();
- return;
- }
-#endif
-#if USE_MSP430_USART1
- if (&SD2 == sdp) {
- usart1_deinit();
- return;
- }
-#endif
-}
-
-#endif /* HAL_USE_SERIAL */
-
-/** @} */
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