diff options
Diffstat (limited to 'os/hal/platforms/STM32/USARTv2/serial_lld.c')
| -rw-r--r-- | os/hal/platforms/STM32/USARTv2/serial_lld.c | 529 |
1 files changed, 0 insertions, 529 deletions
diff --git a/os/hal/platforms/STM32/USARTv2/serial_lld.c b/os/hal/platforms/STM32/USARTv2/serial_lld.c deleted file mode 100644 index f57d0ce1b..000000000 --- a/os/hal/platforms/STM32/USARTv2/serial_lld.c +++ /dev/null @@ -1,529 +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 STM32/USARTv2/serial_lld.c
- * @brief STM32 low level serial driver code.
- *
- * @addtogroup SERIAL
- * @{
- */
-
-#include "ch.h"
-#include "hal.h"
-
-#if HAL_USE_SERIAL || defined(__DOXYGEN__)
-
-/*===========================================================================*/
-/* Driver local definitions. */
-/*===========================================================================*/
-
-/*===========================================================================*/
-/* Driver exported variables. */
-/*===========================================================================*/
-
-/** @brief USART1 serial driver identifier.*/
-#if STM32_SERIAL_USE_USART1 || defined(__DOXYGEN__)
-SerialDriver SD1;
-#endif
-
-/** @brief USART2 serial driver identifier.*/
-#if STM32_SERIAL_USE_USART2 || defined(__DOXYGEN__)
-SerialDriver SD2;
-#endif
-
-/** @brief USART3 serial driver identifier.*/
-#if STM32_SERIAL_USE_USART3 || defined(__DOXYGEN__)
-SerialDriver SD3;
-#endif
-
-/** @brief UART4 serial driver identifier.*/
-#if STM32_SERIAL_USE_UART4 || defined(__DOXYGEN__)
-SerialDriver SD4;
-#endif
-
-/** @brief UART5 serial driver identifier.*/
-#if STM32_SERIAL_USE_UART5 || defined(__DOXYGEN__)
-SerialDriver SD5;
-#endif
-
-/** @brief USART6 serial driver identifier.*/
-#if STM32_SERIAL_USE_USART6 || defined(__DOXYGEN__)
-SerialDriver SD6;
-#endif
-
-/*===========================================================================*/
-/* Driver local variables and types. */
-/*===========================================================================*/
-
-/** @brief Driver default configuration.*/
-static const SerialConfig default_config =
-{
- SERIAL_DEFAULT_BITRATE,
- 0,
- USART_CR2_STOP1_BITS | USART_CR2_LINEN,
- 0
-};
-
-/*===========================================================================*/
-/* Driver local functions. */
-/*===========================================================================*/
-
-/**
- * @brief USART initialization.
- * @details This function must be invoked with interrupts disabled.
- *
- * @param[in] sdp pointer to a @p SerialDriver object
- * @param[in] config the architecture-dependent serial driver configuration
- */
-static void usart_init(SerialDriver *sdp, const SerialConfig *config) {
- USART_TypeDef *u = sdp->usart;
-
- /* Baud rate setting.*/
- u->BRR = (uint16_t)(sdp->clock / config->speed);
-
- /* Note that some bits are enforced.*/
- u->CR2 = config->cr2 | USART_CR2_LBDIE;
- u->CR3 = config->cr3 | USART_CR3_EIE;
- u->CR1 = config->cr1 | USART_CR1_UE | USART_CR1_PEIE |
- USART_CR1_RXNEIE | USART_CR1_TE |
- USART_CR1_RE;
- u->ICR = 0xFFFFFFFF;
-}
-
-/**
- * @brief USART de-initialization.
- * @details This function must be invoked with interrupts disabled.
- *
- * @param[in] u pointer to an USART I/O block
- */
-static void usart_deinit(USART_TypeDef *u) {
-
- u->CR1 = 0;
- u->CR2 = 0;
- u->CR3 = 0;
-}
-
-/**
- * @brief Error handling routine.
- *
- * @param[in] sdp pointer to a @p SerialDriver object
- * @param[in] isr USART ISR register value
- */
-static void set_error(SerialDriver *sdp, uint32_t isr) {
- eventflags_t sts = 0;
-
- if (isr & USART_ISR_ORE)
- sts |= SD_OVERRUN_ERROR;
- if (isr & USART_ISR_PE)
- sts |= SD_PARITY_ERROR;
- if (isr & USART_ISR_FE)
- sts |= SD_FRAMING_ERROR;
- if (isr & USART_ISR_NE)
- sts |= SD_NOISE_ERROR;
- chSysLockFromISR();
- chnAddFlagsI(sdp, sts);
- chSysUnlockFromISR();
-}
-
-/**
- * @brief Common IRQ handler.
- *
- * @param[in] sdp communication channel associated to the USART
- */
-static void serve_interrupt(SerialDriver *sdp) {
- USART_TypeDef *u = sdp->usart;
- uint32_t cr1 = u->CR1;
- uint32_t isr;
-
- /* Reading and clearing status.*/
- isr = u->ISR;
- u->ICR = isr;
-
- /* Error condition detection.*/
- if (isr & (USART_ISR_ORE | USART_ISR_NE | USART_ISR_FE | USART_ISR_PE))
- set_error(sdp, isr);
- /* Special case, LIN break detection.*/
- if (isr & USART_ISR_LBD) {
- chSysLockFromISR();
- chnAddFlagsI(sdp, SD_BREAK_DETECTED);
- chSysUnlockFromISR();
- }
- /* Data available.*/
- if (isr & USART_ISR_RXNE) {
- chSysLockFromISR();
- sdIncomingDataI(sdp, (uint8_t)u->RDR);
- chSysUnlockFromISR();
- }
- /* Transmission buffer empty.*/
- if ((cr1 & USART_CR1_TXEIE) && (isr & USART_ISR_TXE)) {
- msg_t b;
- chSysLockFromISR();
- b = chOQGetI(&sdp->oqueue);
- if (b < Q_OK) {
- chnAddFlagsI(sdp, CHN_OUTPUT_EMPTY);
- u->CR1 = (cr1 & ~USART_CR1_TXEIE) | USART_CR1_TCIE;
- }
- else
- u->TDR = b;
- chSysUnlockFromISR();
- }
- /* Physical transmission end.*/
- if (isr & USART_ISR_TC) {
- chSysLockFromISR();
- chnAddFlagsI(sdp, CHN_TRANSMISSION_END);
- chSysUnlockFromISR();
- u->CR1 = cr1 & ~USART_CR1_TCIE;
- }
-}
-
-#if STM32_SERIAL_USE_USART1 || defined(__DOXYGEN__)
-static void notify1(GenericQueue *qp) {
-
- (void)qp;
- USART1->CR1 |= USART_CR1_TXEIE;
-}
-#endif
-
-#if STM32_SERIAL_USE_USART2 || defined(__DOXYGEN__)
-static void notify2(GenericQueue *qp) {
-
- (void)qp;
- USART2->CR1 |= USART_CR1_TXEIE;
-}
-#endif
-
-#if STM32_SERIAL_USE_USART3 || defined(__DOXYGEN__)
-static void notify3(GenericQueue *qp) {
-
- (void)qp;
- USART3->CR1 |= USART_CR1_TXEIE;
-}
-#endif
-
-#if STM32_SERIAL_USE_UART4 || defined(__DOXYGEN__)
-static void notify4(GenericQueue *qp) {
-
- (void)qp;
- UART4->CR1 |= USART_CR1_TXEIE;
-}
-#endif
-
-#if STM32_SERIAL_USE_UART5 || defined(__DOXYGEN__)
-static void notify5(GenericQueue *qp) {
-
- (void)qp;
- UART5->CR1 |= USART_CR1_TXEIE;
-}
-#endif
-
-#if STM32_SERIAL_USE_USART6 || defined(__DOXYGEN__)
-static void notify6(GenericQueue *qp) {
-
- (void)qp;
- USART6->CR1 |= USART_CR1_TXEIE;
-}
-#endif
-
-/*===========================================================================*/
-/* Driver interrupt handlers. */
-/*===========================================================================*/
-
-#if STM32_SERIAL_USE_USART1 || defined(__DOXYGEN__)
-#if !defined(STM32_USART1_HANDLER)
-#error "STM32_USART1_HANDLER not defined"
-#endif
-/**
- * @brief USART1 interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(STM32_USART1_HANDLER) {
-
- CH_IRQ_PROLOGUE();
-
- serve_interrupt(&SD1);
-
- CH_IRQ_EPILOGUE();
-}
-#endif
-
-#if STM32_SERIAL_USE_USART2 || defined(__DOXYGEN__)
-#if !defined(STM32_USART2_HANDLER)
-#error "STM32_USART2_HANDLER not defined"
-#endif
-/**
- * @brief USART2 interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(STM32_USART2_HANDLER) {
-
- CH_IRQ_PROLOGUE();
-
- serve_interrupt(&SD2);
-
- CH_IRQ_EPILOGUE();
-}
-#endif
-
-#if STM32_SERIAL_USE_USART3 || defined(__DOXYGEN__)
-#if !defined(STM32_USART3_HANDLER)
-#error "STM32_USART3_HANDLER not defined"
-#endif
-/**
- * @brief USART3 interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(STM32_USART3_HANDLER) {
-
- CH_IRQ_PROLOGUE();
-
- serve_interrupt(&SD3);
-
- CH_IRQ_EPILOGUE();
-}
-#endif
-
-#if STM32_SERIAL_USE_UART4 || defined(__DOXYGEN__)
-#if !defined(STM32_UART4_HANDLER)
-#error "STM32_UART4_HANDLER not defined"
-#endif
-/**
- * @brief UART4 interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(STM32_UART4_HANDLER) {
-
- CH_IRQ_PROLOGUE();
-
- serve_interrupt(&SD4);
-
- CH_IRQ_EPILOGUE();
-}
-#endif
-
-#if STM32_SERIAL_USE_UART5 || defined(__DOXYGEN__)
-#if !defined(STM32_UART5_HANDLER)
-#error "STM32_UART5_HANDLER not defined"
-#endif
-/**
- * @brief UART5 interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(STM32_UART5_HANDLER) {
-
- CH_IRQ_PROLOGUE();
-
- serve_interrupt(&SD5);
-
- CH_IRQ_EPILOGUE();
-}
-#endif
-
-#if STM32_SERIAL_USE_USART6 || defined(__DOXYGEN__)
-#if !defined(STM32_USART6_HANDLER)
-#error "STM32_USART6_HANDLER not defined"
-#endif
-/**
- * @brief USART1 interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(STM32_USART6_HANDLER) {
-
- CH_IRQ_PROLOGUE();
-
- serve_interrupt(&SD6);
-
- CH_IRQ_EPILOGUE();
-}
-#endif
-
-/*===========================================================================*/
-/* Driver exported functions. */
-/*===========================================================================*/
-
-/**
- * @brief Low level serial driver initialization.
- *
- * @notapi
- */
-void sd_lld_init(void) {
-
-#if STM32_SERIAL_USE_USART1
- sdObjectInit(&SD1, NULL, notify1);
- SD1.usart = USART1;
- SD1.clock = STM32_USART1CLK;
-#endif
-
-#if STM32_SERIAL_USE_USART2
- sdObjectInit(&SD2, NULL, notify2);
- SD2.usart = USART2;
- SD2.clock = STM32_USART2CLK;
-#endif
-
-#if STM32_SERIAL_USE_USART3
- sdObjectInit(&SD3, NULL, notify3);
- SD3.usart = USART3;
- SD3.clock = STM32_USART3CLK;
-#endif
-
-#if STM32_SERIAL_USE_UART4
- sdObjectInit(&SD4, NULL, notify4);
- SD4.usart = UART4;
- SD4.clock = STM32_UART4CLK;
-#endif
-
-#if STM32_SERIAL_USE_UART5
- sdObjectInit(&SD5, NULL, notify5);
- SD5.usart = UART5;
- SD5.clock = STM32_UART5CLK;
-#endif
-
-#if STM32_SERIAL_USE_USART6
- sdObjectInit(&SD6, NULL, notify6);
- SD6.usart = USART6;
- SD6.clock = STM32_USART6CLK;
-#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 STM32_SERIAL_USE_USART1
- if (&SD1 == sdp) {
- rccEnableUSART1(FALSE);
- nvicEnableVector(STM32_USART1_NUMBER,
- CORTEX_PRIORITY_MASK(STM32_SERIAL_USART1_PRIORITY));
- }
-#endif
-#if STM32_SERIAL_USE_USART2
- if (&SD2 == sdp) {
- rccEnableUSART2(FALSE);
- nvicEnableVector(STM32_USART2_NUMBER,
- CORTEX_PRIORITY_MASK(STM32_SERIAL_USART2_PRIORITY));
- }
-#endif
-#if STM32_SERIAL_USE_USART3
- if (&SD3 == sdp) {
- rccEnableUSART3(FALSE);
- nvicEnableVector(STM32_USART3_NUMBER,
- CORTEX_PRIORITY_MASK(STM32_SERIAL_USART3_PRIORITY));
- }
-#endif
-#if STM32_SERIAL_USE_UART4
- if (&SD4 == sdp) {
- rccEnableUART4(FALSE);
- nvicEnableVector(STM32_UART4_NUMBER,
- CORTEX_PRIORITY_MASK(STM32_SERIAL_UART4_PRIORITY));
- }
-#endif
-#if STM32_SERIAL_USE_UART5
- if (&SD5 == sdp) {
- rccEnableUART5(FALSE);
- nvicEnableVector(STM32_UART5_NUMBER,
- CORTEX_PRIORITY_MASK(STM32_SERIAL_UART5_PRIORITY));
- }
-#endif
-#if STM32_SERIAL_USE_USART6
- if (&SD6 == sdp) {
- rccEnableUSART6(FALSE);
- nvicEnableVector(STM32_USART6_NUMBER,
- CORTEX_PRIORITY_MASK(STM32_SERIAL_USART6_PRIORITY));
- }
-#endif
- }
- 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 STM32_SERIAL_USE_USART1
- if (&SD1 == sdp) {
- rccDisableUSART1(FALSE);
- nvicDisableVector(STM32_USART1_NUMBER);
- return;
- }
-#endif
-#if STM32_SERIAL_USE_USART2
- if (&SD2 == sdp) {
- rccDisableUSART2(FALSE);
- nvicDisableVector(STM32_USART2_NUMBER);
- return;
- }
-#endif
-#if STM32_SERIAL_USE_USART3
- if (&SD3 == sdp) {
- rccDisableUSART3(FALSE);
- nvicDisableVector(STM32_USART3_NUMBER);
- return;
- }
-#endif
-#if STM32_SERIAL_USE_UART4
- if (&SD4 == sdp) {
- rccDisableUART4(FALSE);
- nvicDisableVector(STM32_UART4_NUMBER);
- return;
- }
-#endif
-#if STM32_SERIAL_USE_UART5
- if (&SD5 == sdp) {
- rccDisableUART5(FALSE);
- nvicDisableVector(STM32_UART5_NUMBER);
- return;
- }
-#endif
-#if STM32_SERIAL_USE_USART6
- if (&SD6 == sdp) {
- rccDisableUSART6(FALSE);
- nvicDisableVector(STM32_USART6_NUMBER);
- return;
- }
-#endif
- }
-}
-
-#endif /* HAL_USE_SERIAL */
-
-/** @} */
|