diff options
Diffstat (limited to 'os/hal/ports/AVR/XMEGA/LLD/USARTv1/hal_serial_lld.c')
| -rw-r--r-- | os/hal/ports/AVR/XMEGA/LLD/USARTv1/hal_serial_lld.c | 816 |
1 files changed, 816 insertions, 0 deletions
diff --git a/os/hal/ports/AVR/XMEGA/LLD/USARTv1/hal_serial_lld.c b/os/hal/ports/AVR/XMEGA/LLD/USARTv1/hal_serial_lld.c new file mode 100644 index 000000000..9f067f235 --- /dev/null +++ b/os/hal/ports/AVR/XMEGA/LLD/USARTv1/hal_serial_lld.c @@ -0,0 +1,816 @@ +/*
+ ChibiOS - Copyright (C) 2016..2018 Theodore Ateba
+
+ 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 hal_serial_lld.c
+ * @brief AVR serial subsystem low level driver source.
+ *
+ * @addtogroup SERIAL
+ * @{
+ */
+
+#include "hal.h"
+
+#if (HAL_USE_SERIAL == TRUE) || defined(__DOXYGEN__)
+
+/*==========================================================================*/
+/* Driver local definitions. */
+/*==========================================================================*/
+
+/*==========================================================================*/
+/* Driver exported variables. */
+/*==========================================================================*/
+
+/**
+ * @brief USARTC0 serial driver identifier.
+ */
+#if (AVR_SERIAL_USE_USART1 == TRUE) || defined(__DOXYGEN__)
+SerialDriver SD1;
+#endif
+
+/**
+ * @brief USARTC1 serial driver identifier.
+ */
+#if (AVR_SERIAL_USE_USART2 == TRUE) || defined(__DOXYGEN__)
+SerialDriver SD2;
+#endif
+
+/**
+ * @brief USARTD0 serial driver identifier.
+ */
+#if (AVR_SERIAL_USE_USART3 == TRUE) || defined(__DOXYGEN__)
+SerialDriver SD3;
+#endif
+
+/**
+ * @brief USARTD1 serial driver identifier.
+ */
+#if (AVR_SERIAL_USE_USART4 == TRUE) || defined(__DOXYGEN__)
+SerialDriver SD4;
+#endif
+
+/**
+ * @brief USARTE0 serial driver identifier.
+ */
+#if (AVR_SERIAL_USE_USART5 == TRUE) || defined(__DOXYGEN__)
+SerialDriver SD5;
+#endif
+
+/*==========================================================================*/
+/* Driver local variables and types. */
+/*==========================================================================*/
+
+/**
+ * @brief Driver default configuration.
+ */
+static const SerialConfig default_config = {
+ 38400, /* Baud rate. */
+ false, /* Normal speed at default. */
+ false, /* Disable the MPCM at default. */
+ false, /* Transmit 8 bits mode at default. */
+ SERIAL_CMODE_ASYNCHRONOUS, /* Asynchronous communication mode at default.*/
+ SERIAL_PMODE_DISABLE, /* No parity at default. */
+ SERIAL_SBMODE_1BIT, /* One stop bit at default. */
+ SERIAL_CHSIZE_8BIT, /* 8 bits data frame at default. */
+};
+
+/*==========================================================================*/
+/* Driver local functions. */
+/*==========================================================================*/
+
+/**
+ * @brief Configure the multiprocessor communication mode.
+ *
+ * @param[in] sdp pointer to the @p Serial Driver object
+ * @param[in] config the architecture-dependent serial driver configuration
+ */
+static void usart_cfg_mpcm(SerialDriver *sdp, const SerialConfig *config) {
+
+ if (config->mpcm)
+ sdp->usart->CTRLB |= (USART_MPCM_bm);
+ else
+ sdp->usart->CTRLB &= ~(USART_MPCM_bm);
+}
+
+/**
+ * @brief Configure the double speed.
+ *
+ * @param[in] sdp pointer to the @p Serial Driver object
+ * @param[in] config the architecture-dependent serial driver configuration
+ */
+static void usart_cfg_clk2x(SerialDriver *sdp, const SerialConfig *config) {
+
+ if (config->clk2x)
+ sdp->usart->CTRLB |= (USART_CLK2X_bm);
+ else
+ sdp->usart->CTRLB &= ~(USART_CLK2X_bm);
+}
+
+/**
+ * @brief Configuration of transmission mode (8/9 bits).
+ *
+ * @param[in] sdp pointer to the @p Serial Driver object
+ * @param[in] config the architecture-dependent serial driver configuration
+ */
+static void usart_cfg_txb8(SerialDriver *sdp, const SerialConfig *config) {
+
+ if (config->txb8)
+ sdp->usart->CTRLB |= (USART_TXB8_bm);
+ else
+ sdp->usart->CTRLB &= ~(USART_TXB8_bm);
+}
+
+/**
+ * @brief Configuration of communication mode.
+ *
+ * @param[in] sdp pointer to the @p Serial Driver object
+ * @param[in] config the architecture-dependent serial driver configuration
+ */
+static void usart_cfg_cmode(SerialDriver *sdp, const SerialConfig *config) {
+
+ if (config->cmode == SERIAL_CMODE_SYNCHRONOUS) {
+ sdp->usart->CTRLC = (sdp->usart->CTRLC & ~USART_CMODE_gm) | \
+ (USART_CMODE_SYNCHRONOUS_gc);
+ }
+ if (config->cmode == SERIAL_CMODE_ASYNCHRONOUS) {
+ sdp->usart->CTRLC = (sdp->usart->CTRLC & ~USART_CMODE_gm) | \
+ (USART_CMODE_ASYNCHRONOUS_gc);
+ }
+}
+
+/**
+ * @brief Configuration of the number of stop to use during transmission.
+ * @details @true set 2 stop bit and @false set 1 stop bit.
+ *
+ * @param[in] sdp pointer to the @p Serial Driver object
+ * @param[in] config the architecture-dependent serial driver configuration
+ */
+static void usart_cfg_sbmode(SerialDriver *sdp, const SerialConfig *config) {
+
+ if (config->sbmode) {
+ sdp->usart->CTRLC |= USART_SBMODE_bm;
+ }
+ else {
+ sdp->usart->CTRLC &= ~USART_SBMODE_bm;
+ }
+}
+
+/**
+ * @brief Configuration of parity mode.
+ *
+ * @param[in] sdp pointer to the @p Serial Driver object
+ * @param[in] config the architecture-dependent serial driver configuration
+ */
+static void usart_cfg_pmode(SerialDriver *sdp, const SerialConfig *config) {
+
+ if (config->pmode == SERIAL_PMODE_EVEN) {
+ sdp->usart->CTRLC = (sdp->usart->CTRLC & ~USART_PMODE_gm) | \
+ (USART_PMODE_EVEN_gc);
+ }
+ else if (config->chsize == SERIAL_PMODE_ODD) {
+ sdp->usart->CTRLC = (sdp->usart->CTRLC & ~USART_PMODE_gm) | \
+ (USART_PMODE_ODD_gc);
+ }
+ else {
+ sdp->usart->CTRLC = (sdp->usart->CTRLC & ~USART_PMODE_gm) | \
+ (USART_PMODE_DISABLED_gc);
+ }
+}
+
+/**
+ * @brief Configuration of caracter size.
+ *
+ * @param[in] sdp pointer to the @p Serial Driver object
+ * @param[in] config the architecture-dependent serial driver configuration
+ */
+static void usart_cfg_chsize(SerialDriver *sdp, const SerialConfig *config) {
+
+ if (config->chsize == SERIAL_CHSIZE_5BIT) {
+ sdp->usart->CTRLC = (sdp->usart->CTRLC & ~USART_CHSIZE_gm) | \
+ (USART_CHSIZE_5BIT_gc);
+ }
+ else if (config->chsize == SERIAL_CHSIZE_6BIT) {
+ sdp->usart->CTRLC = (sdp->usart->CTRLC & ~USART_CHSIZE_gm) | \
+ (USART_CHSIZE_6BIT_gc);
+ }
+ else if (config->chsize == SERIAL_CHSIZE_7BIT) {
+ sdp->usart->CTRLC = (sdp->usart->CTRLC & ~USART_CHSIZE_gm) | \
+ (USART_CHSIZE_7BIT_gc);
+ }
+ else if (config->chsize == SERIAL_CHSIZE_8BIT) {
+ sdp->usart->CTRLC = (sdp->usart->CTRLC & ~USART_CHSIZE_gm) | \
+ (USART_CHSIZE_8BIT_gc);
+ }
+ else {
+ sdp->usart->CTRLC = (sdp->usart->CTRLC & ~USART_CHSIZE_gm) | \
+ (USART_CHSIZE_9BIT_gc);
+ }
+}
+
+/**
+ * @brief Configuration of the baud rate.
+ * @note BSCALE is set to 0 for the moment.
+ * @TODO Support all the BSCALE value
+ *
+ * @param[in] sdp pointer to the @p Serial Driver object
+ * @param[in] config the architecture-dependent serial driver configuration
+ */
+static void usart_cfg_baudrate(SerialDriver *sdp, const SerialConfig *config) {
+
+ /* BSCALE = 0. */
+ #define BSCALE 0
+ uint16_t br = get_bsel(config->speed);
+ sdp->usart->BAUDCTRLA =(uint8_t)br;
+ sdp->usart->BAUDCTRLB =(BSCALE << USART_BSCALE0_bp) | (br >> 8);
+}
+
+/**
+ * @brief USART de-initialization.
+ * @details This function must be invoked with interrupts disabled.
+ *
+ * @param[in] sdp pointer to the @p Serial Driver object
+ */
+static void usart_stop(SerialDriver *sdp) {
+
+ sdp->usart->CTRLB &= ~(USART_RXEN_bm);
+ sdp->usart->CTRLB &= ~(USART_TXEN_bm);
+}
+
+/**
+ * @brief USART initialization.
+ * @details This function must be invoked with interrupts disabled.
+ *
+ * @param[in] sdp pointer to the @p Serial Driver object
+ * @param[in] config the architecture-dependent serial driver configuration
+ */
+static void usart_start(SerialDriver *sdp, const SerialConfig *config) {
+
+ usart_stop(sdp);
+
+ /* Resetting eventual pending status flags. */
+
+ /* Starting the receiver idle loop. */
+ /*uart_enter_rx_idle_loop(uartp);*/
+
+ usart_cfg_mpcm(sdp, config);
+ usart_cfg_clk2x(sdp, config);
+ usart_cfg_txb8(sdp, config);
+ usart_cfg_cmode(sdp, config);
+ usart_cfg_sbmode(sdp, config);
+ usart_cfg_pmode(sdp, config);
+ usart_cfg_chsize(sdp, config);
+ usart_cfg_baudrate(sdp, config);
+ sdp->usart->CTRLB |= (USART_RXEN_bm);
+ sdp->usart->CTRLB |= (USART_TXEN_bm);
+}
+
+/**
+ * @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_t *u = sdp->usart;
+
+ usart_start(sdp, config);
+ u->CTRLA = (u->CTRLA & ~USART_RXCINTLVL_gm) | USART_RXCINTLVL_LO_gc;
+ u->CTRLA = (u->CTRLA & ~USART_TXCINTLVL_gm) | USART_TXCINTLVL_LO_gc;
+ u->CTRLA = (u->CTRLA & ~USART_DREINTLVL_gm) | USART_DREINTLVL_LO_gc;
+ PMIC.CTRL |= PMIC_LOLVLEX_bm;
+ sei();
+ u->CTRLB |= (USART_RXEN_bm);
+ u->CTRLB |= (USART_TXEN_bm);
+}
+
+/**
+ * @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_t *u) {
+
+ u->CTRLB &= ~(USART_RXEN_bm);
+ u->CTRLB &= ~(USART_TXEN_bm);
+}
+
+/**
+ * @brief Error handling routine.
+ *
+ * @param[in] sdp pointer to a @p SerialDriver object
+ * @param[in] sr USART SR register value
+ */
+static void set_error(SerialDriver *sdp, uint8_t sr) {
+
+ eventflags_t sts = 0;
+
+ if (sr & USART_BUFOVF_bm)
+ sts |= SD_OVERRUN_ERROR;
+ if (sr & USART_PERR_bm)
+ sts |= SD_PARITY_ERROR;
+ if (sr & USART_FERR_bm)
+ sts |= SD_FRAMING_ERROR;
+
+ chnAddFlagsI(sdp, sts);
+}
+
+#if AVR_SERIAL_USE_USART1 || defined(__DOXYGEN__)
+static void notify1(io_queue_t *qp) {
+
+ (void)qp;
+ USARTC0.CTRLA &= ~USART_DREINTLVL_gm;
+ USARTC0.CTRLA |= USART_DREINTLVL_MED_gc;
+}
+#endif
+#if AVR_SERIAL_USE_USART2 || defined(__DOXYGEN__)
+static void notify2(io_queue_t *qp) {
+
+ (void)qp;
+ USARTC1.CTRLA &= ~USART_DREINTLVL_gm;
+ USARTC1.CTRLA |= USART_DREINTLVL_MED_gc;
+}
+#endif
+#if AVR_SERIAL_USE_USART3 || defined(__DOXYGEN__)
+static void notify3(io_queue_t *qp) {
+
+ (void)qp;
+ USARTD0.CTRLA &= ~USART_DREINTLVL_gm;
+ USARTD0.CTRLA |= USART_DREINTLVL_MED_gc;
+}
+#endif
+#if AVR_SERIAL_USE_USART4 || defined(__DOXYGEN__)
+static void notify4(io_queue_t *qp) {
+
+ (void)qp;
+ USARTD1.CTRLA &= ~USART_DREINTLVL_gm;
+ USARTD1.CTRLA |= USART_DREINTLVL_MED_gc;
+}
+#endif
+#if AVR_SERIAL_USE_USART5 || defined(__DOXYGEN__)
+static void notify5(io_queue_t *qp) {
+
+ (void)qp;
+ USARTE0.CTRLA &= ~USART_DREINTLVL_gm;
+ USARTE0.CTRLA |= USART_DREINTLVL_MED_gc;
+}
+#endif
+
+/*==========================================================================*/
+/* Driver interrupt handlers. */
+/*==========================================================================*/
+
+#if AVR_SERIAL_USE_USART1 || defined(__DOXYGEN__)
+/**
+ * @brief USART1 TX IRQ handler, transmission complete interruption.
+ *
+ * @isr
+ */
+OSAL_IRQ_HANDLER(USARTC0_TXC_vect) {
+
+ OSAL_IRQ_PROLOGUE();
+
+ osalSysLockFromISR();
+ USARTC0.CTRLA = (USARTC0.CTRLA & ~USART_DREINTLVL_gm) | USART_DREINTLVL_LO_gc;
+ osalSysUnlockFromISR();
+
+ OSAL_IRQ_EPILOGUE();
+}
+
+/**
+ * @brief USART1 TX IRQ handler, transmission complete interruption.
+ *
+ * @isr
+ */
+OSAL_IRQ_HANDLER(USARTC0_DRE_vect) {
+
+ msg_t msg;
+
+ OSAL_IRQ_PROLOGUE();
+
+ osalSysLockFromISR();
+ msg = oqGetI(&SD1.oqueue);
+ osalSysUnlockFromISR();
+
+ if (msg < MSG_OK) {
+ USARTC0.CTRLA = (USARTC0.CTRLA & ~USART_DREINTLVL_gm) | USART_DREINTLVL_OFF_gc;
+ }
+ else {
+ USARTC0.DATA = msg;
+ }
+
+ OSAL_IRQ_EPILOGUE();
+}
+
+/**
+ * @brief USART1 RX IRQ handler, reception complete interruption.
+ *
+ * @isr
+ */
+OSAL_IRQ_HANDLER(USARTC0_RXC_vect) {
+
+ uint8_t status;
+
+ OSAL_IRQ_PROLOGUE();
+
+ status = USARTC0.STATUS;
+ if (status & (USART_FERR_bm | USART_PERR_bm | USART_BUFOVF_bm));
+ set_error(&SD1, status);
+ osalSysLockFromISR();
+ sdIncomingDataI(&SD1, USARTC0.DATA);
+ osalSysUnlockFromISR();
+ OSAL_IRQ_EPILOGUE();
+}
+#endif /* AVR_UART_USE_USART1 */
+
+#if AVR_SERIAL_USE_USART2 || defined(__DOXYGEN__)
+/**
+ * @brief USART1 TX IRQ handler, transmission complete interruption.
+ *
+ * @isr
+ */
+OSAL_IRQ_HANDLER(USARTC0_TXC_vect) {
+
+ OSAL_IRQ_PROLOGUE();
+
+ osalSysLockFromISR();
+ USARTC1.CTRLA = (USARTC1.CTRLA & ~USART_DREINTLVL_gm) | USART_DREINTLVL_LO_gc;
+ osalSysUnlockFromISR();
+
+ OSAL_IRQ_EPILOGUE();
+}
+
+/**
+ * @brief USART2 TX IRQ handler, transmission complete interruption.
+ *
+ * @isr
+ */
+OSAL_IRQ_HANDLER(USARTC1_DRE_vect) {
+
+ msg_t msg;
+
+ OSAL_IRQ_PROLOGUE();
+
+ osalSysLockFromISR();
+ msg = oqGetI(&SD2.oqueue);
+ osalSysUnlockFromISR();
+
+ if (msg < MSG_OK) {
+ USARTC1.CTRLA = (USARTC1.CTRLA & ~USART_DREINTLVL_gm) | USART_DREINTLVL_OFF_gc;
+ }
+ else {
+ USARTC1.DATA = msg;
+ }
+
+ OSAL_IRQ_EPILOGUE();
+}
+
+/**
+ * @brief USART2 RX IRQ handler, reception complete interruption.
+ *
+ * @isr
+ */
+OSAL_IRQ_HANDLER(USARTC1_RXC_vect) {
+
+ uint8_t status;
+
+ OSAL_IRQ_PROLOGUE();
+
+ status = USARTC1.STATUS;
+ if (status & (USART_FERR_bm | USART_PERR_bm | USART_BUFOVF_bm));
+ set_error(&SD2, status);
+ osalSysLockFromISR();
+ sdIncomingDataI(&SD2, USARTC1.DATA);
+ osalSysUnlockFromISR();
+ OSAL_IRQ_EPILOGUE();
+}
+#endif /* AVR_UART_USE_USART2 */
+
+#if AVR_SERIAL_USE_USART3 || defined(__DOXYGEN__)
+/**
+ * @brief USART1 TX IRQ handler, transmission complete interruption.
+ *
+ * @isr
+ */
+OSAL_IRQ_HANDLER(USARTD0_TXC_vect) {
+
+ OSAL_IRQ_PROLOGUE();
+
+ osalSysLockFromISR();
+ USARTD0.CTRLA = (USARTD0.CTRLA & ~USART_DREINTLVL_gm) | USART_DREINTLVL_LO_gc;
+ osalSysUnlockFromISR();
+
+ OSAL_IRQ_EPILOGUE();
+}
+
+/**
+ * @brief USART3 TX IRQ handler, transmission complete interruption.
+ *
+ * @isr
+ */
+OSAL_IRQ_HANDLER(USARTD0_DRE_vect) {
+
+ msg_t msg;
+
+ OSAL_IRQ_PROLOGUE();
+
+ osalSysLockFromISR();
+ msg = oqGetI(&SD3.oqueue);
+ osalSysUnlockFromISR();
+
+ if (msg < MSG_OK) {
+ USARTD0.CTRLA = (USARTD0.CTRLA & ~USART_DREINTLVL_gm) | USART_DREINTLVL_OFF_gc;
+ }
+ else {
+ USARTD0.DATA = msg;
+ }
+
+ OSAL_IRQ_EPILOGUE();
+}
+
+/**
+ * @brief USART3 RX IRQ handler, reception complete interruption.
+ *
+ * @isr
+ */
+OSAL_IRQ_HANDLER(USARTD0_RXC_vect) {
+
+ uint8_t status;
+
+ OSAL_IRQ_PROLOGUE();
+
+ status = USARTD0.STATUS;
+ if (status & (USART_FERR_bm | USART_PERR_bm | USART_BUFOVF_bm));
+ set_error(&SD3, status);
+ osalSysLockFromISR();
+ sdIncomingDataI(&SD3, USARTD0.DATA);
+ osalSysUnlockFromISR();
+ OSAL_IRQ_EPILOGUE();
+}
+#endif /* AVR_UART_USE_USART3 */
+
+#if AVR_SERIAL_USE_USART4 || defined(__DOXYGEN__)
+/**
+ * @brief USART1 TX IRQ handler, transmission complete interruption.
+ *
+ * @isr
+ */
+OSAL_IRQ_HANDLER(USARTD1_TXC_vect) {
+
+ OSAL_IRQ_PROLOGUE();
+
+ osalSysLockFromISR();
+ USARTD1.CTRLA = (USARTD1.CTRLA & ~USART_DREINTLVL_gm) | USART_DREINTLVL_LO_gc;
+ osalSysUnlockFromISR();
+
+ OSAL_IRQ_EPILOGUE();
+}
+
+/**
+ * @brief USART4 TX IRQ handler, transmission complete interruption.
+ *
+ * @isr
+ */
+OSAL_IRQ_HANDLER(USARTD1_DRE_vect) {
+
+ msg_t msg;
+
+ OSAL_IRQ_PROLOGUE();
+
+ osalSysLockFromISR();
+ msg = oqGetI(&SD4.oqueue);
+ osalSysUnlockFromISR();
+
+ if (msg < MSG_OK) {
+ USARTD1.CTRLA = (USARTD1.CTRLA & ~USART_DREINTLVL_gm) | USART_DREINTLVL_OFF_gc;
+ }
+ else {
+ USARTD1.DATA = msg;
+ }
+
+ OSAL_IRQ_EPILOGUE();
+}
+
+/**
+ * @brief USART4 RX IRQ handler, reception complete interruption.
+ *
+ * @isr
+ */
+OSAL_IRQ_HANDLER(USARTD1_RXC_vect) {
+
+ uint8_t status;
+
+ OSAL_IRQ_PROLOGUE();
+
+ status = USARTD1.STATUS;
+ if (status & (USART_FERR_bm | USART_PERR_bm | USART_BUFOVF_bm));
+ set_error(&SD4, status);
+ osalSysLockFromISR();
+ sdIncomingDataI(&SD4, USARTD1.DATA);
+ osalSysUnlockFromISR();
+ OSAL_IRQ_EPILOGUE();
+}
+#endif /* AVR_UART_USE_USART4 */
+
+#if AVR_SERIAL_USE_USART5 || defined(__DOXYGEN__)
+/**
+ * @brief USART1 TX IRQ handler, transmission complete interruption.
+ *
+ * @isr
+ */
+OSAL_IRQ_HANDLER(USARTE0_TXC_vect) {
+
+ OSAL_IRQ_PROLOGUE();
+
+ osalSysLockFromISR();
+ USARTE0.CTRLA = (USARTE0.CTRLA & ~USART_DREINTLVL_gm) | USART_DREINTLVL_LO_gc;
+ osalSysUnlockFromISR();
+
+ OSAL_IRQ_EPILOGUE();
+}
+
+/**
+ * @brief USART5 TX IRQ handler, transmission complete interruption.
+ *
+ * @isr
+ */
+OSAL_IRQ_HANDLER(USARTE0_DRE_vect) {
+
+ msg_t msg;
+
+ OSAL_IRQ_PROLOGUE();
+
+ osalSysLockFromISR();
+ msg = oqGetI(&SD5.oqueue);
+ osalSysUnlockFromISR();
+
+ if (msg < MSG_OK) {
+ USARTE0.CTRLA = (USARTE0.CTRLA & ~USART_DREINTLVL_gm) | USART_DREINTLVL_OFF_gc;
+ }
+ else {
+ USARTE0.DATA = msg;
+ }
+
+ OSAL_IRQ_EPILOGUE();
+}
+
+/**
+ * @brief USART5 RX IRQ handler, reception complete interruption.
+ *
+ * @isr
+ */
+OSAL_IRQ_HANDLER(USARTE0_RXC_vect) {
+
+ uint8_t status;
+
+ OSAL_IRQ_PROLOGUE();
+
+ status = USARTE0.STATUS;
+ if (status & (USART_FERR_bm | USART_PERR_bm | USART_BUFOVF_bm));
+ set_error(&SD5, status);
+ osalSysLockFromISR();
+ sdIncomingDataI(&SD5, USARTE0.DATA);
+ osalSysUnlockFromISR();
+ OSAL_IRQ_EPILOGUE();
+}
+#endif /* AVR_UART_USE_USART5 */
+
+/*==========================================================================*/
+/* Driver exported functions. */
+/*==========================================================================*/
+
+/**
+ * @brief Low level serial driver initialization.
+ *
+ * @notapi
+ */
+void sd_lld_init(void) {
+
+#if AVR_SERIAL_USE_USART1 == TRUE
+ sdObjectInit(&SD1, NULL, notify1);
+ SD1.usart = &USARTC0;
+#endif
+#if AVR_SERIAL_USE_USART2 == TRUE
+ sdObjectInit(&SD2, NULL, notify2);
+ SD2.usart = &USARTC1;
+#endif
+#if AVR_SERIAL_USE_USART3 == TRUE
+ sdObjectInit(&SD3, NULL, notify3);
+ SD3.usart = &USARTD0;
+#endif
+#if AVR_SERIAL_USE_USART4 == TRUE
+ sdObjectInit(&SD4, NULL, notify4);
+ SD4.usart = &USARTD1;
+#endif
+#if AVR_SERIAL_USE_USART5 == TRUE
+ sdObjectInit(&SD5, NULL, notify5);
+ SD5.usart = &USARTE0;
+#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 AVR_SERIAL_USE_USART1 == TRUE
+ if (&SD1 == sdp) {
+
+ }
+#endif
+#if AVR_SERIAL_USE_USART2 == TRUE
+ if (&SD2 == sdp) {
+
+ }
+#endif
+#if AVR_SERIAL_USE_USART3 == TRUE
+ if (&SD3 == sdp) {
+
+ }
+#endif
+#if AVR_SERIAL_USE_USART4 == TRUE
+ if (&SD4 == sdp) {
+
+ }
+#endif
+#if AVR_SERIAL_USE_USART5 == TRUE
+ if (&SD5 == sdp) {
+
+ }
+#endif
+ }
+ /* Configures the peripheral. */
+ 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) {
+
+ usart_deinit(sdp->usart);
+ if (sdp->state == SD_READY) {
+#if AVR_SERIAL_USE_USART1 == TRUE
+ if (&SD1 == sdp) {
+
+ }
+#endif
+#if AVR_SERIAL_USE_USART2 == TRUE
+ if (&SD2 == sdp) {
+
+ }
+#endif
+#if AVR_SERIAL_USE_USART3 == TRUE
+ if (&SD3 == sdp) {
+
+ }
+#endif
+#if AVR_SERIAL_USE_USART4 == TRUE
+ if (&SD4 == sdp) {
+
+ }
+#endif
+#if AVR_SERIAL_USE_USART5 == TRUE
+ if (&SD5 == sdp) {
+
+ }
+#endif
+ }
+}
+
+#endif /* HAL_USE_SERIAL == TRUE */
+
+/** @} */
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