/* ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio ChibiOS - Copyright (C) 2023..2025 HorrorTroll ChibiOS - Copyright (C) 2023..2025 Zhaqian 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 USARTv2/hal_sio_lld.h * @brief AT32 SIO subsystem low level driver header. * * @addtogroup SIO * @{ */ #ifndef HAL_SIO_LLD_H #define HAL_SIO_LLD_H #if (HAL_USE_SIO == TRUE) || defined(__DOXYGEN__) #include "at32_usart.h" /*===========================================================================*/ /* Driver constants. */ /*===========================================================================*/ /** * @brief Mask of RX-related errors in the ISR register. */ #define SIO_LLD_ISR_RX_ERRORS (USART_STS_NERR | USART_STS_FERR | \ USART_STS_PERR | USART_STS_ROERR | \ USART_STS_BFF) /*===========================================================================*/ /* Driver pre-compile time settings. */ /*===========================================================================*/ /** * @name AT32 configuration options * @{ */ /** * @brief SIO driver 1 enable switch. * @details If set to @p TRUE the support for USART1 is included. * @note The default is @p FALSE. */ #if !defined(AT32_SIO_USE_USART1) || defined(__DOXYGEN__) #define AT32_SIO_USE_USART1 FALSE #endif /** * @brief SIO driver 2 enable switch. * @details If set to @p TRUE the support for USART2 is included. * @note The default is @p FALSE. */ #if !defined(AT32_SIO_USE_USART2) || defined(__DOXYGEN__) #define AT32_SIO_USE_USART2 FALSE #endif /** * @brief SIO driver 3 enable switch. * @details If set to @p TRUE the support for USART3 is included. * @note The default is @p FALSE. */ #if !defined(AT32_SIO_USE_USART3) || defined(__DOXYGEN__) #define AT32_SIO_USE_USART3 FALSE #endif /** * @brief SIO driver 4 enable switch. * @details If set to @p TRUE the support for UART4 is included. * @note The default is @p FALSE. */ #if !defined(AT32_SIO_USE_UART4) || defined(__DOXYGEN__) #define AT32_SIO_USE_UART4 FALSE #endif /** * @brief SIO driver 5 enable switch. * @details If set to @p TRUE the support for UART5 is included. * @note The default is @p FALSE. */ #if !defined(AT32_SIO_USE_UART5) || defined(__DOXYGEN__) #define AT32_SIO_USE_UART5 FALSE #endif /** * @brief SIO driver 6 enable switch. * @details If set to @p TRUE the support for USART6 is included. * @note The default is @p FALSE. */ #if !defined(AT32_SIO_USE_USART6) || defined(__DOXYGEN__) #define AT32_SIO_USE_USART6 FALSE #endif /** * @brief SIO driver 7 enable switch. * @details If set to @p TRUE the support for UART7 is included. * @note The default is @p FALSE. */ #if !defined(AT32_SIO_USE_UART7) || defined(__DOXYGEN__) #define AT32_SIO_USE_UART7 FALSE #endif /** * @brief SIO driver 8 enable switch. * @details If set to @p TRUE the support for UART8 is included. * @note The default is @p FALSE. */ #if !defined(AT32_SIO_USE_UART8) || defined(__DOXYGEN__) #define AT32_SIO_USE_UART8 FALSE #endif /** @} */ /*===========================================================================*/ /* Derived constants and error checks. */ /*===========================================================================*/ #if AT32_SIO_USE_USART1 && !AT32_HAS_USART1 #error "USART1 not present in the selected device" #endif #if AT32_SIO_USE_USART2 && !AT32_HAS_USART2 #error "USART2 not present in the selected device" #endif #if AT32_SIO_USE_USART3 && !AT32_HAS_USART3 #error "USART3 not present in the selected device" #endif #if AT32_SIO_USE_UART4 && !AT32_HAS_UART4 #error "UART4 not present in the selected device" #endif #if AT32_SIO_USE_UART5 && !AT32_HAS_UART5 #error "UART5 not present in the selected device" #endif #if AT32_SIO_USE_USART6 && !AT32_HAS_USART6 #error "USART6 not present in the selected device" #endif #if AT32_SIO_USE_UART7 && !AT32_HAS_UART7 #error "UART7 not present in the selected device" #endif #if AT32_SIO_USE_UART8 && !AT32_HAS_UART8 #error "UART8 not present in the selected device" #endif #if !AT32_SIO_USE_USART1 && !AT32_SIO_USE_USART2 && \ !AT32_SIO_USE_USART3 && !AT32_SIO_USE_UART4 && \ !AT32_SIO_USE_UART5 && !AT32_SIO_USE_USART6 && \ !AT32_SIO_USE_UART7 && !AT32_SIO_USE_UART8 #error "SIO driver activated but no USART/UART peripheral assigned" #endif /* Checks on allocation of USARTx units.*/ #if AT32_SIO_USE_USART1 #if defined(AT32_USART1_IS_USED) #error "SIOD1 requires USART1 but it is already used" #else #define AT32_USART1_IS_USED #endif #endif #if AT32_SIO_USE_USART2 #if defined(AT32_USART2_IS_USED) #error "SIOD2 requires USART2 but it is already used" #else #define AT32_USART2_IS_USED #endif #endif #if AT32_SIO_USE_USART3 #if defined(AT32_USART3_IS_USED) #error "SIOD3 requires USART3 but it is already used" #else #define AT32_USART3_IS_USED #endif #endif #if AT32_SIO_USE_UART4 #if defined(AT32_UART4_IS_USED) #error "SIOD4 requires UART4 but it is already used" #else #define AT32_UART4_IS_USED #endif #endif #if AT32_SIO_USE_UART5 #if defined(AT32_UART5_IS_USED) #error "SIOD5 requires UART5 but it is already used" #else #define AT32_UART5_IS_USED #endif #endif #if AT32_SIO_USE_USART6 #if defined(AT32_USART6_IS_USED) #error "SIOD6 requires USART6 but it is already used" #else #define AT32_USART6_IS_USED #endif #endif #if AT32_SIO_USE_UART7 #if defined(AT32_UART7_IS_USED) #error "SIOD7 requires UART7 but it is already used" #else #define AT32_UART7_IS_USED #endif #endif #if AT32_SIO_USE_UART8 #if defined(AT32_UART8_IS_USED) #error "SIOD8 requires UART8 but it is already used" #else #define AT32_UART8_IS_USED #endif #endif /*===========================================================================*/ /* Driver data structures and types. */ /*===========================================================================*/ /*===========================================================================*/ /* Driver macros. */ /*===========================================================================*/ /** * @brief Low level fields of the SIO driver structure. */ #define sio_lld_driver_fields \ /* Pointer to the USARTx registers block.*/ \ USART_TypeDef *usart; \ /* Clock frequency for the associated USART/UART.*/ \ uint32_t clock /** * @brief Low level fields of the SIO configuration structure. */ #define sio_lld_config_fields \ /* Desired baud rate.*/ \ uint32_t baud; \ /* USART CTRL1 register initialization data.*/ \ uint32_t ctrl1; \ /* USART CTRL2 register initialization data.*/ \ uint32_t ctrl2; \ /* USART CTRL3 register initialization data.*/ \ uint32_t ctrl3 /** * @brief Determines the state of the RX FIFO. * * @param[in] siop pointer to the @p SIODriver object * @return The RX FIFO state. * @retval false if RX FIFO is not empty * @retval true if RX FIFO is empty * * @notapi */ #define sio_lld_is_rx_empty(siop) \ (bool)(((siop)->usart->STS & USART_STS_RDBF) == 0U) /** * @brief Determines the activity state of the receiver. * * @param[in] siop pointer to the @p SIODriver object * @return The RX activity state. * @retval false if RX is in active state. * @retval true if RX is in idle state. * * @notapi */ #define sio_lld_is_rx_idle(siop) \ (bool)(((siop)->usart->STS & USART_STS_IDLEF) != 0U) /** * @brief Determines if RX has pending error events to be read and cleared. * @note Only error and protocol errors are handled, data events are not * considered. * * @param[in] siop pointer to the @p SIODriver object * @return The RX error events. * @retval false if RX has no pending events * @retval true if RX has pending events * * @notapi */ #define sio_lld_has_rx_errors(siop) \ (bool)(((siop)->usart->STS & SIO_LLD_ISR_RX_ERRORS) != 0U) /** * @brief Determines the state of the TX FIFO. * * @param[in] siop pointer to the @p SIODriver object * @return The TX FIFO state. * @retval false if TX FIFO is not full * @retval true if TX FIFO is full * * @notapi */ #define sio_lld_is_tx_full(siop) \ (bool)(((siop)->usart->STS & USART_STS_TDBE) == 0U) /** * @brief Determines the transmission state. * * @param[in] siop pointer to the @p SIODriver object * @return The TX FIFO state. * @retval false if transmission is idle * @retval true if transmission is ongoing * * @notapi */ #define sio_lld_is_tx_ongoing(siop) \ (bool)(((siop)->usart->STS & USART_STS_TDC) == 0U) /*===========================================================================*/ /* External declarations. */ /*===========================================================================*/ #if (AT32_SIO_USE_USART1 == TRUE) && !defined(__DOXYGEN__) extern SIODriver SIOD1; #endif #if (AT32_SIO_USE_USART2 == TRUE) && !defined(__DOXYGEN__) extern SIODriver SIOD2; #endif #if (AT32_SIO_USE_USART3 == TRUE) && !defined(__DOXYGEN__) extern SIODriver SIOD3; #endif #if (AT32_SIO_USE_UART4 == TRUE) && !defined(__DOXYGEN__) extern SIODriver SIOD4; #endif #if (AT32_SIO_USE_UART5 == TRUE) && !defined(__DOXYGEN__) extern SIODriver SIOD5; #endif #if (AT32_SIO_USE_USART6 == TRUE) && !defined(__DOXYGEN__) extern SIODriver SIOD6; #endif #if (AT32_SIO_USE_UART7 == TRUE) && !defined(__DOXYGEN__) extern SIODriver SIOD7; #endif #if (AT32_SIO_USE_UART8 == TRUE) && !defined(__DOXYGEN__) extern SIODriver SIOD8; #endif #ifdef __cplusplus extern "C" { #endif void sio_lld_init(void); msg_t sio_lld_start(SIODriver *siop); void sio_lld_stop(SIODriver *siop); void sio_lld_update_enable_flags(SIODriver *siop); sioevents_t sio_lld_get_and_clear_errors(SIODriver *siop); sioevents_t sio_lld_get_and_clear_events(SIODriver *siop); sioevents_t sio_lld_get_events(SIODriver *siop); size_t sio_lld_read(SIODriver *siop, uint8_t *buffer, size_t n); size_t sio_lld_write(SIODriver *siop, const uint8_t *buffer, size_t n); msg_t sio_lld_get(SIODriver *siop); void sio_lld_put(SIODriver *siop, uint_fast16_t data); msg_t sio_lld_control(SIODriver *siop, unsigned int operation, void *arg); void sio_lld_serve_interrupt(SIODriver *siop); #ifdef __cplusplus } #endif #endif /* HAL_USE_SIO == TRUE */ #endif /* HAL_SIO_LLD_H */ /** @} */