diff options
Diffstat (limited to 'os/hal/platforms/AVR/serial_lld.c')
| -rw-r--r-- | os/hal/platforms/AVR/serial_lld.c | 360 |
1 files changed, 0 insertions, 360 deletions
diff --git a/os/hal/platforms/AVR/serial_lld.c b/os/hal/platforms/AVR/serial_lld.c deleted file mode 100644 index 0b6127bb6..000000000 --- a/os/hal/platforms/AVR/serial_lld.c +++ /dev/null @@ -1,360 +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 AVR/serial_lld.c
- * @brief AVR low level serial driver code.
- *
- * @addtogroup SERIAL
- * @{
- */
-
-#include "ch.h"
-#include "hal.h"
-
-#if HAL_USE_SERIAL || defined(__DOXYGEN__)
-
-/*===========================================================================*/
-/* Driver exported variables. */
-/*===========================================================================*/
-
-/**
- * @brief USART0 serial driver identifier.
- * @note The name does not follow the convention used in the other ports
- * (COMn) because a name conflict with the AVR headers.
- */
-#if USE_AVR_USART0 || defined(__DOXYGEN__)
-SerialDriver SD1;
-#endif
-
-/**
- * @brief USART1 serial driver identifier.
- * @note The name does not follow the convention used in the other ports
- * (COMn) because a name conflict with the AVR headers.
- */
-#if USE_AVR_USART1 || defined(__DOXYGEN__)
-SerialDriver SD2;
-#endif
-
-/*===========================================================================*/
-/* Driver local variables and types. */
-/*===========================================================================*/
-
-/**
- * @brief Driver default configuration.
- */
-static const SerialConfig default_config = {
- UBRR(SERIAL_DEFAULT_BITRATE),
- USART_CHAR_SIZE_8
-};
-
-/*===========================================================================*/
-/* Driver local functions. */
-/*===========================================================================*/
-
-static void set_error(uint8_t sra, SerialDriver *sdp) {
- flagsmask_t sts = 0;
- uint8_t dor = 0;
- uint8_t upe = 0;
- uint8_t fe = 0;
-
-#if USE_AVR_USART0
- if (&SD1 == sdp) {
- dor = (1 << DOR0);
- upe = (1 << UPE0);
- fe = (1 << FE0);
- }
-#endif
-
-#if USE_AVR_USART1
- if (&SD2 == sdp) {
- dor = (1 << DOR1);
- upe = (1 << UPE1);
- fe = (1 << FE1);
- }
-#endif
-
- if (sra & dor)
- sts |= SD_OVERRUN_ERROR;
- if (sra & upe)
- sts |= SD_PARITY_ERROR;
- if (sra & fe)
- sts |= SD_FRAMING_ERROR;
- chSysLockFromIsr();
- chnAddFlagsI(sdp, sts);
- chSysUnlockFromIsr();
-}
-
-#if USE_AVR_USART0 || defined(__DOXYGEN__)
-static void notify1(GenericQueue *qp) {
-
- (void)qp;
- UCSR0B |= (1 << UDRIE0);
-}
-
-/**
- * @brief USART0 initialization.
- *
- * @param[in] config the architecture-dependent serial driver configuration
- */
-static void usart0_init(const SerialConfig *config) {
-
- UBRR0L = config->sc_brr;
- UBRR0H = config->sc_brr >> 8;
- UCSR0A = 0;
- UCSR0B = (1 << RXEN0) | (1 << TXEN0) | (1 << RXCIE0);
- switch (config->sc_bits_per_char) {
- case USART_CHAR_SIZE_5:
- UCSR0C = 0;
- break;
- case USART_CHAR_SIZE_6:
- UCSR0C = (1 << UCSZ00);
- break;
- case USART_CHAR_SIZE_7:
- UCSR0C = (1 << UCSZ01);
- break;
- case USART_CHAR_SIZE_9:
- UCSR0B |= (1 << UCSZ02);
- UCSR0C = (1 << UCSZ00) | (1 << UCSZ01);
- break;
- case USART_CHAR_SIZE_8:
- default:
- UCSR0C = (1 << UCSZ00) | (1 << UCSZ01);
- }
-}
-
-/**
- * @brief USART0 de-initialization.
- */
-static void usart0_deinit(void) {
-
- UCSR0A = 0;
- UCSR0B = 0;
- UCSR0C = 0;
-}
-#endif
-
-#if USE_AVR_USART1 || defined(__DOXYGEN__)
-static void notify2(GenericQueue *qp) {
-
- (void)qp;
- UCSR1B |= (1 << UDRIE1);
-}
-
-/**
- * @brief USART1 initialization.
- *
- * @param[in] config the architecture-dependent serial driver configuration
- */
-static void usart1_init(const SerialConfig *config) {
-
- UBRR1L = config->sc_brr;
- UBRR1H = config->sc_brr >> 8;
- UCSR1A = 0;
- UCSR1B = (1 << RXEN1) | (1 << TXEN1) | (1 << RXCIE1);
- switch (config->sc_bits_per_char) {
- case USART_CHAR_SIZE_5:
- UCSR1C = 0;
- break;
- case USART_CHAR_SIZE_6:
- UCSR1C = (1 << UCSZ10);
- break;
- case USART_CHAR_SIZE_7:
- UCSR1C = (1 << UCSZ11);
- break;
- case USART_CHAR_SIZE_9:
- UCSR1B |= (1 << UCSZ12);
- UCSR1C = (1 << UCSZ10) | (1 << UCSZ11);
- break;
- case USART_CHAR_SIZE_8:
- default:
- UCSR1C = (1 << UCSZ10) | (1 << UCSZ11);
- }
-}
-
-/**
- * @brief USART1 de-initialization.
- */
-static void usart1_deinit(void) {
-
- UCSR1A = 0;
- UCSR1B = 0;
- UCSR1C = 0;
-}
-#endif
-
-/*===========================================================================*/
-/* Driver interrupt handlers. */
-/*===========================================================================*/
-
-#if USE_AVR_USART0 || defined(__DOXYGEN__)
-/**
- * @brief USART0 RX interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(USART0_RX_vect) {
- uint8_t sra;
-
- CH_IRQ_PROLOGUE();
-
- sra = UCSR0A;
- if (sra & ((1 << DOR0) | (1 << UPE0) | (1 << FE0)))
- set_error(sra, &SD1);
- chSysLockFromIsr();
- sdIncomingDataI(&SD1, UDR0);
- chSysUnlockFromIsr();
-
- CH_IRQ_EPILOGUE();
-}
-
-/**
- * @brief USART0 TX interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(USART0_UDRE_vect) {
- msg_t b;
-
- CH_IRQ_PROLOGUE();
-
- chSysLockFromIsr();
- b = sdRequestDataI(&SD1);
- chSysUnlockFromIsr();
- if (b < Q_OK)
- UCSR0B &= ~(1 << UDRIE0);
- else
- UDR0 = b;
-
- CH_IRQ_EPILOGUE();
-}
-#endif /* USE_AVR_USART0 */
-
-#if USE_AVR_USART1 || defined(__DOXYGEN__)
-/**
- * @brief USART1 RX interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(USART1_RX_vect) {
- uint8_t sra;
-
- CH_IRQ_PROLOGUE();
-
- sra = UCSR1A;
- if (sra & ((1 << DOR1) | (1 << UPE1) | (1 << FE1)))
- set_error(sra, &SD2);
- chSysLockFromIsr();
- sdIncomingDataI(&SD2, UDR1);
- chSysUnlockFromIsr();
-
- CH_IRQ_EPILOGUE();
-}
-
-/**
- * @brief USART1 TX interrupt handler.
- *
- * @isr
- */
-CH_IRQ_HANDLER(USART1_UDRE_vect) {
- msg_t b;
-
- CH_IRQ_PROLOGUE();
-
- chSysLockFromIsr();
- b = sdRequestDataI(&SD2);
- chSysUnlockFromIsr();
- if (b < Q_OK)
- UCSR1B &= ~(1 << UDRIE1);
- else
- UDR1 = b;
-
- CH_IRQ_EPILOGUE();
-}
-#endif /* USE_AVR_USART1 */
-
-/*===========================================================================*/
-/* Driver exported functions. */
-/*===========================================================================*/
-
-/**
- * @brief Low level serial driver initialization.
- *
- * @notapi
- */
-void sd_lld_init(void) {
-
-#if USE_AVR_USART0
- sdObjectInit(&SD1, NULL, notify1);
-#endif
-#if USE_AVR_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_AVR_USART0
- if (&SD1 == sdp) {
- usart0_init(config);
- return;
- }
-#endif
-#if USE_AVR_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_AVR_USART0
- if (&SD1 == sdp)
- usart0_deinit();
-#endif
-#if USE_AVR_USART1
- if (&SD2 == sdp)
- usart1_deinit();
-#endif
-}
-
-#endif /* HAL_USE_SERIAL */
-
-/** @} */
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