diff options
Diffstat (limited to 'os/hal/platforms/Rx62n/serial_lld.c')
| -rw-r--r-- | os/hal/platforms/Rx62n/serial_lld.c | 306 |
1 files changed, 0 insertions, 306 deletions
diff --git a/os/hal/platforms/Rx62n/serial_lld.c b/os/hal/platforms/Rx62n/serial_lld.c deleted file mode 100644 index fc0e5eca2..000000000 --- a/os/hal/platforms/Rx62n/serial_lld.c +++ /dev/null @@ -1,306 +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 RX62N/serial_lld.c
- * @brief RX62N low level serial driver code.
- *
- * @addtogroup SERIAL
- * @{
- */
-
-#include "ch.h"
-#include "hal.h"
-
-#if HAL_USE_SERIAL || defined(__DOXYGEN__)
-
-/*===========================================================================*/
-/* Driver exported variables. */
-/*===========================================================================*/
-
-#if RX62N_SERIAL_USE_UART0 || defined(__DOXYGEN__)
-/** @brief UART0 serial driver identifier.*/
-SerialDriver SD1;
-#endif
-
-/*===========================================================================*/
-/* Driver local variables and types. */
-/*===========================================================================*/
-
-/** @brief Driver default configuration.*/
-static const SerialConfig default_config = {
- .sc_speed = SERIAL_DEFAULT_BITRATE,
- .sc_scr = 0, /* only bits 0-1 used */
- .sc_smr = 0,
- .sc_semr = 0,
-};
-
-/*===========================================================================*/
-/* Driver local functions. */
-/*===========================================================================*/
-
-/**
- * @brief UART initialization.
- *
- * @param[in] sdp communication channel associated to the UART
- * @param[in] config the architecture-dependent serial driver configuration
- * @todo Test all possible SMR and SEMR clock settings
- */
-static void uart_init(SerialDriver *sdp, const SerialConfig *config) {
- volatile struct st_sci *u = sdp->uart;
-
- uint32_t brr;
-
- u->SCR.BYTE = config->sc_scr & 0x03;
- u->SMR.BYTE = config->sc_smr;
- u->SEMR.BYTE = config->sc_semr;
- brr = ( 32 << ( 2 * ( config->sc_smr & 3 ) ) ) >> ( ( config->sc_semr & 0x10 ) ? 1 : 0 );
- brr = RX62N_PERCLK / ( brr * config->sc_speed ) - 1;
- u->BRR = brr;
- /* TODO: delay 1-bit interval */
- u->SCR.BYTE |= 0x70;
-}
-
-/**
- * @brief UART de-initialization.
- *
- * @param[in] u pointer to an UART I/O block
- */
-static void uart_deinit(volatile struct st_sci *u) {
-
- u->SCR.BYTE = 0;
- u->SMR.BYTE = 0;
- u->SEMR.BYTE = 0;
- u->BRR = 0;
-}
-
-/**
- * @brief Error handling routine.
- *
- * @param[in] sdp communication channel associated to the UART
- * @param[in] err UART LSR register value
- */
-static void set_error(SerialDriver *sdp, uint32_t err) {
-
- flagsmask_t sts = 0;
-
- if (err & SSR_ORER)
- sts |= SD_OVERRUN_ERROR;
- if (err & SSR_PER)
- sts |= SD_PARITY_ERROR;
- if (err & SSR_FER)
- sts |= SD_FRAMING_ERROR;
- chSysLockFromIsr();
- chnAddFlagsI(sdp, sts);
- chSysUnlockFromIsr();
-
-}
-
-#if RX62N_SERIAL_USE_UART0 || defined(__DOXYGEN__)
-/**
- * @brief Error IRQ handler.
- *
- * @param[in] sdp communication channel associated to the UART
- */
-static void serve_interrupt_eri(SerialDriver *sdp) {
- volatile struct st_sci *u = sdp->uart;
-
- set_error(sdp, u->SSR.BYTE);
- u->SSR.BYTE &= ~((1<<3)|(1<<4)|(1<<5)); /* clear error flags */
-}
-
-/**
- * @brief Receive IRQ handler.
- *
- * @param[in] sdp communication channel associated to the UART
- */
-static void serve_interrupt_rxi(SerialDriver *sdp) {
- volatile struct st_sci *u = sdp->uart;
-
- chSysLockFromIsr();
- sdIncomingDataI(sdp, u->RDR);
- chSysUnlockFromIsr();
-}
-
-/**
- * @brief Transmit IRQ handler.
- *
- * @param[in] sdp communication channel associated to the UART
- */
-static void serve_interrupt_txi(SerialDriver *sdp) {
- volatile struct st_sci *u = sdp->uart;
- msg_t b;
-
- chSysLockFromIsr();
- if (!u->SSR.BIT.TDRE) {
- /* forced by notify */
- chSysUnlockFromIsr();
- return;
- }
- b = chOQGetI(&sdp->oqueue);
- chSysUnlockFromIsr();
- if (b < Q_OK) {
- u->SCR.BIT.TIE = 0;
- chSysLockFromIsr();
- chnAddFlagsI(sdp, CHN_OUTPUT_EMPTY);
- chSysUnlockFromIsr();
- return;
- }
- u->TDR = b;
-}
-
-/**
- * @brief Transmission end IRQ handler.
- *
- * @param[in] sdp communication channel associated to the UART
- */
-static void serve_interrupt_tei(SerialDriver *sdp) {
-
- chSysLockFromIsr();
- chnAddFlagsI(sdp, CHN_TRANSMISSION_END);
- chSysUnlockFromIsr();
-}
-
-/**
- * @brief Driver SD1 output notification.
- */
-static void notify1(GenericQueue *qp) {
-
- (void)qp;
- SD1.uart->SCR.BIT.TIE = 1;
- IR(SCI0,TXI0) = 1; /* Set Interrupt Enable Register */
-}
-#endif
-
-/*===========================================================================*/
-/* Driver interrupt handlers. */
-/*===========================================================================*/
-
-/**
- * @brief UART0 IRQ handler.
- *
- * @isr
- */
-#if RX62N_SERIAL_USE_UART0 || defined(__DOXYGEN__)
-CH_IRQ_HANDLER(Excep_SCI0_ERI0) {
-
- CH_IRQ_PROLOGUE();
-
- serve_interrupt_eri(&SD1);
-
- CH_IRQ_EPILOGUE();
-}
-CH_IRQ_HANDLER(Excep_SCI0_RXI0) {
-
- CH_IRQ_PROLOGUE();
-
- serve_interrupt_rxi(&SD1);
-
- CH_IRQ_EPILOGUE();
-}
-CH_IRQ_HANDLER(Excep_SCI0_TXI0) {
-
- CH_IRQ_PROLOGUE();
-
- serve_interrupt_txi(&SD1);
-
- CH_IRQ_EPILOGUE();
-}
-CH_IRQ_HANDLER(Excep_SCI0_TEI0) {
-
- CH_IRQ_PROLOGUE();
-
- serve_interrupt_tei(&SD1);
-
- CH_IRQ_EPILOGUE();
-}
-#endif
-
-/*===========================================================================*/
-/* Driver exported functions. */
-/*===========================================================================*/
-
-/**
- * @brief Low level serial driver initialization.
- *
- * @notapi
- */
-void sd_lld_init(void) {
-
-#if RX62N_SERIAL_USE_UART0
- sdObjectInit(&SD1, NULL, notify1);
- SD1.uart = &SCI0;
- PORT2.ICR.BIT.B1 = 1;
-#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 RX62N_SERIAL_USE_UART0
- if (&SD1 == sdp) {
- MSTP(SCI0) = 0; /* Enable SCI0 (cancel module stop state) */
- IEN(SCI0,RXI0) = 1;
- IEN(SCI0,TXI0) = 1;
- IEN(SCI0,ERI0) = 1;
- IPR(SCI0,TXI0) = RX62N_SERIAL_UART0_IRQ_PRIORITY;
- }
-#endif
- }
- uart_init(sdp, config);
-}
-
-/**
- * @brief Low level serial driver stop.
- * @details De-initializes the UART, 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) {
- uart_deinit(sdp->uart);
-#if RX62N_SERIAL_USE_UART0
- if (&SD1 == sdp) {
- IEN(SCI0,RXI0) = 0;
- IEN(SCI0,TXI0) = 0;
- IEN(SCI0,ERI0) = 0;
- MSTP(SCI0) = 1; /* Disable SCI0 (enter module stop state) */
- return;
- }
-#endif
- }
-}
-
-#endif /* HAL_USE_SERIAL */
-
-/** @} */
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