diff options
Diffstat (limited to 'os/hal/platforms/SPC5xx/ESCI_v1/serial_lld.c')
| -rw-r--r-- | os/hal/platforms/SPC5xx/ESCI_v1/serial_lld.c | 296 |
1 files changed, 0 insertions, 296 deletions
diff --git a/os/hal/platforms/SPC5xx/ESCI_v1/serial_lld.c b/os/hal/platforms/SPC5xx/ESCI_v1/serial_lld.c deleted file mode 100644 index 3257927c6..000000000 --- a/os/hal/platforms/SPC5xx/ESCI_v1/serial_lld.c +++ /dev/null @@ -1,296 +0,0 @@ -/*
- SPC5 HAL - Copyright (C) 2013 STMicroelectronics
-
- 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 SPC5xx/ESCI_v1/serial_lld.c
- * @brief SPC5xx low level serial driver code.
- *
- * @addtogroup SERIAL
- * @{
- */
-
-#include "ch.h"
-#include "hal.h"
-
-#if HAL_USE_SERIAL || defined(__DOXYGEN__)
-
-/*===========================================================================*/
-/* Driver exported variables. */
-/*===========================================================================*/
-
-/**
- * @brief eSCI-A serial driver identifier.
- */
-#if SPC5_USE_ESCIA || defined(__DOXYGEN__)
-SerialDriver SD1;
-#endif
-
-/**
- * @brief eSCI-B serial driver identifier.
- */
-#if SPC5_USE_ESCIB || defined(__DOXYGEN__)
-SerialDriver SD2;
-#endif
-
-/*===========================================================================*/
-/* Driver local variables and types. */
-/*===========================================================================*/
-
-/**
- * @brief Driver default configuration.
- */
-static const SerialConfig default_config = {
- SERIAL_DEFAULT_BITRATE,
- SD_MODE_NORMAL | SD_MODE_PARITY_NONE
-};
-
-/*===========================================================================*/
-/* Driver local functions. */
-/*===========================================================================*/
-
-/**
- * @brief eSCI 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 esci_init(SerialDriver *sdp, const SerialConfig *config) {
- volatile struct ESCI_tag *escip = sdp->escip;
- uint8_t mode = config->sc_mode;
-
- escip->CR2.R = 0; /* MDIS off. */
- escip->CR1.R = 0;
- escip->LCR.R = 0;
- escip->CR1.B.SBR = SPC5_SYSCLK / (16 * config->sc_speed);
- if (mode & SD_MODE_LOOPBACK)
- escip->CR1.B.LOOPS = 1;
- switch (mode & SD_MODE_PARITY_MASK) {
- case SD_MODE_PARITY_ODD:
- escip->CR1.B.PT = 1;
- case SD_MODE_PARITY_EVEN:
- escip->CR1.B.PE = 1;
- escip->CR1.B.M = 1; /* Makes it 8 bits data + 1 bit parity. */
- default:
- ;
- }
- escip->LPR.R = 0;
- escip->CR1.R |= 0x0000002C; /* RIE, TE, RE to 1. */
- escip->CR2.R = 0x000F; /* ORIE, NFIE, FEIE, PFIE to 1. */
-}
-
-/**
- * @brief eSCI de-initialization.
- * @details This function must be invoked with interrupts disabled.
- *
- * @param[in] escip pointer to an eSCI I/O block
- */
-static void esci_deinit(volatile struct ESCI_tag *escip) {
-
- escip->LPR.R = 0;
- escip->SR.R = 0xFFFFFFFF;
- escip->CR1.R = 0;
- escip->CR2.R = 0x8000; /* MDIS on. */
-}
-
-/**
- * @brief Error handling routine.
- *
- * @param[in] sdp pointer to a @p SerialDriver object
- * @param[in] sr eSCI SR register value
- */
-static void set_error(SerialDriver *sdp, uint32_t sr) {
- flagsmask_t sts = 0;
-
- if (sr & 0x08000000)
- sts |= SD_OVERRUN_ERROR;
- if (sr & 0x04000000)
- sts |= SD_NOISE_ERROR;
- if (sr & 0x02000000)
- sts |= SD_FRAMING_ERROR;
- if (sr & 0x01000000)
- sts |= SD_PARITY_ERROR;
-/* if (sr & 0x00000000)
- sts |= SD_BREAK_DETECTED;*/
- chSysLockFromIsr();
- chnAddFlagsI(sdp, sts);
- chSysUnlockFromIsr();
-}
-
-/**
- * @brief Common IRQ handler.
- *
- * @param[in] sdp pointer to a @p SerialDriver object
- */
-static void serve_interrupt(SerialDriver *sdp) {
- volatile struct ESCI_tag *escip = sdp->escip;
-
- uint32_t sr = escip->SR.R;
- escip->SR.R = 0x3FFFFFFF; /* Does not clear TDRE | TC.*/
- if (sr & 0x0F000000) /* OR | NF | FE | PF. */
- set_error(sdp, sr);
- if (sr & 0x20000000) { /* RDRF. */
- chSysLockFromIsr();
- sdIncomingDataI(sdp, escip->DR.B.D);
- chSysUnlockFromIsr();
- }
- if (escip->CR1.B.TIE && (sr & 0x80000000)) { /* TDRE. */
- msg_t b;
- chSysLockFromIsr();
- b = chOQGetI(&sdp->oqueue);
- if (b < Q_OK) {
- chnAddFlagsI(sdp, CHN_OUTPUT_EMPTY);
- escip->CR1.B.TIE = 0;
- }
- else {
- ESCI_A.SR.B.TDRE = 1;
- escip->DR.R = (uint16_t)b;
- }
- chSysUnlockFromIsr();
- }
-}
-
-#if SPC5_USE_ESCIA || defined(__DOXYGEN__)
-static void notify1(GenericQueue *qp) {
-
- (void)qp;
- if (ESCI_A.SR.B.TDRE) {
- msg_t b = sdRequestDataI(&SD1);
- if (b != Q_EMPTY) {
- ESCI_A.SR.B.TDRE = 1;
- ESCI_A.CR1.B.TIE = 1;
- ESCI_A.DR.R = (uint16_t)b;
- }
- }
-}
-#endif
-
-#if SPC5_USE_ESCIB || defined(__DOXYGEN__)
-static void notify2(GenericQueue *qp) {
-
- (void)qp;
- if (ESCI_B.SR.B.TDRE) {
- msg_t b = sdRequestDataI(&SD2);
- if (b != Q_EMPTY) {
- ESCI_B.SR.B.TDRE = 1;
- ESCI_B.CR1.B.TIE = 1;
- ESCI_B.DR.R = (uint16_t)b;
- }
- }
-}
-#endif
-
-/*===========================================================================*/
-/* Driver interrupt handlers. */
-/*===========================================================================*/
-
-#if SPC5_USE_ESCIA || defined(__DOXYGEN__)
-#if !defined(SPC5_ESCIA_HANDLER)
-#error "SPC5_ESCIA_HANDLER not defined"
-#endif
-/**
- * @brief eSCI-A interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(SPC5_ESCIA_HANDLER) {
-
- CH_IRQ_PROLOGUE();
-
- serve_interrupt(&SD1);
-
- CH_IRQ_EPILOGUE();
-}
-#endif
-
-#if SPC5_USE_ESCIB || defined(__DOXYGEN__)
-#if !defined(SPC5_ESCIB_HANDLER)
-#error "SPC5_ESCIB_HANDLER not defined"
-#endif
-/**
- * @brief eSCI-B interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(SPC5_ESCIB_HANDLER) {
-
- CH_IRQ_PROLOGUE();
-
- serve_interrupt(&SD2);
-
- CH_IRQ_EPILOGUE();
-}
-#endif
-
-/*===========================================================================*/
-/* Driver exported functions. */
-/*===========================================================================*/
-
-/**
- * @brief Low level serial driver initialization.
- *
- * @notapi
- */
-void sd_lld_init(void) {
-
-#if SPC5_USE_ESCIA
- sdObjectInit(&SD1, NULL, notify1);
- SD1.escip = &ESCI_A;
- ESCI_A.CR2.R = 0x8000; /* MDIS ON. */
- INTC.PSR[SPC5_ESCIA_NUMBER].R = SPC5_ESCIA_PRIORITY;
-#endif
-
-#if SPC5_USE_ESCIB
- sdObjectInit(&SD2, NULL, notify2);
- SD2.escip = &ESCI_B;
- ESCI_B.CR2.R = 0x8000; /* MDIS ON. */
- INTC.PSR[SPC5_ESCIB_NUMBER].R = SPC5_ESCIB_PRIORITY;
-#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;
- esci_init(sdp, config);
-}
-
-/**
- * @brief Low level serial driver stop.
- *
- * @param[in] sdp pointer to a @p SerialDriver object
- *
- * @notapi
- */
-void sd_lld_stop(SerialDriver *sdp) {
-
- if (sdp->state == SD_READY)
- esci_deinit(sdp->escip);
-}
-
-#endif /* HAL_USE_SERIAL */
-
-/** @} */
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