| /**************************************************************************** |
| * arch/arm/src/stm32wb/stm32wb_uart.h |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. The |
| * ASF licenses this file to you 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. |
| * |
| ****************************************************************************/ |
| |
| #ifndef __ARCH_ARM_STC_STM32WB_STM32WB_UART_H |
| #define __ARCH_ARM_STC_STM32WB_STM32WB_UART_H |
| |
| /**************************************************************************** |
| * Included Files |
| ****************************************************************************/ |
| |
| #include <nuttx/config.h> |
| #include <nuttx/serial/serial.h> |
| |
| #include "chip.h" |
| #include "hardware/stm32wb_uart.h" |
| |
| /**************************************************************************** |
| * Pre-processor Definitions |
| ****************************************************************************/ |
| |
| /* Sanity checks */ |
| |
| #if !defined(CONFIG_STM32WB_LPUART1) |
| # undef CONFIG_STM32WB_LPUART1_SERIALDRIVER |
| # undef CONFIG_STM32WB_LPUART1_1WIREDRIVER |
| #endif |
| #if !defined(CONFIG_STM32WB_USART1) |
| # undef CONFIG_STM32WB_USART1_SERIALDRIVER |
| # undef CONFIG_STM32WB_USART1_1WIREDRIVER |
| #endif |
| |
| /* Is there a USART enabled? */ |
| |
| #if defined(CONFIG_STM32WB_LPUART1) || defined(CONFIG_STM32WB_USART1) |
| # define HAVE_UART 1 |
| #endif |
| |
| /* Is there a serial console? */ |
| |
| #if defined(CONFIG_LPUART1_SERIAL_CONSOLE) && defined(CONFIG_STM32WB_LPUART1_SERIALDRIVER) |
| # undef CONFIG_USART1_SERIAL_CONSOLE |
| # define CONSOLE_UART 1 |
| # define HAVE_CONSOLE 1 |
| #elif defined(CONFIG_USART1_SERIAL_CONSOLE) && defined(CONFIG_STM32WB_USART1_SERIALDRIVER) |
| # undef CONFIG_LPUART1_SERIAL_CONSOLE |
| # define CONSOLE_UART 2 |
| # define HAVE_CONSOLE 1 |
| #else |
| # undef CONFIG_LPUART1_SERIAL_CONSOLE |
| # undef CONFIG_USART1_SERIAL_CONSOLE |
| # define CONSOLE_UART 0 |
| # undef HAVE_CONSOLE |
| #endif |
| |
| /* DMA support is only provided if CONFIG_ARCH_DMA is in the NuttX |
| * configuration |
| */ |
| |
| #if !defined(HAVE_UART) || !defined(CONFIG_ARCH_DMA) |
| # undef CONFIG_LPUART1_RXDMA |
| # undef CONFIG_USART1_RXDMA |
| #endif |
| |
| /* Disable the DMA configuration on all unused USARTs */ |
| |
| #ifndef CONFIG_STM32WB_LPUART1_SERIALDRIVER |
| # undef CONFIG_LPUART1_RXDMA |
| #endif |
| |
| #ifndef CONFIG_STM32WB_USART1_SERIALDRIVER |
| # undef CONFIG_USART1_RXDMA |
| #endif |
| |
| /* Is DMA available on any (enabled) USART? */ |
| |
| #undef SERIAL_HAVE_RXDMA |
| #if defined(CONFIG_LPUART1_RXDMA) || defined(CONFIG_USART1_RXDMA) |
| # define SERIAL_HAVE_RXDMA 1 |
| #endif |
| |
| /* Is DMA used on the console UART? */ |
| |
| #undef SERIAL_HAVE_CONSOLE_DMA |
| #if defined(CONFIG_LPUART1_SERIAL_CONSOLE) && defined(CONFIG_LPUART1_RXDMA) |
| # define SERIAL_HAVE_CONSOLE_DMA 1 |
| #elif defined(CONFIG_USART1_SERIAL_CONSOLE) && defined(CONFIG_USART1_RXDMA) |
| # define SERIAL_HAVE_CONSOLE_DMA 1 |
| #endif |
| |
| /* Is DMA used on all (enabled) USARTs */ |
| |
| #define SERIAL_HAVE_ONLY_DMA 1 |
| #if defined(CONFIG_STM32WB_LPUART1_SERIALDRIVER) && !defined(CONFIG_LPUART1_RXDMA) |
| # undef SERIAL_HAVE_ONLY_DMA |
| #elif defined(CONFIG_STM32WB_USART1_SERIALDRIVER) && !defined(CONFIG_USART1_RXDMA) |
| # undef SERIAL_HAVE_ONLY_DMA |
| #endif |
| |
| /* Is RS-485 used? */ |
| |
| #if defined(CONFIG_LPUART1_RS485) || defined(CONFIG_USART1_RS485) |
| # define HAVE_RS485 1 |
| #endif |
| |
| #ifdef HAVE_RS485 |
| # define USART_CR1_USED_INTS (USART_CR1_RXNEIE | USART_CR1_TXEIE | USART_CR1_PEIE | USART_CR1_TCIE) |
| #else |
| # define USART_CR1_USED_INTS (USART_CR1_RXNEIE | USART_CR1_TXEIE | USART_CR1_PEIE) |
| #endif |
| |
| /**************************************************************************** |
| * Public Types |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Public Data |
| ****************************************************************************/ |
| |
| #ifndef __ASSEMBLY__ |
| |
| #undef EXTERN |
| #if defined(__cplusplus) |
| #define EXTERN extern "C" |
| extern "C" |
| { |
| #else |
| #define EXTERN extern |
| #endif |
| |
| /**************************************************************************** |
| * Public Function Prototypes |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Name: stm32wb_serial_dma_poll |
| * |
| * Description: |
| * Must be called periodically if any STM32WB UART is configured for DMA. |
| * The DMA callback is triggered for each fifo size/2 bytes, but this can |
| * result in some bytes being transferred but not collected if the incoming |
| * data is not a whole multiple of half the FIFO size. |
| * |
| * May be safely called from either interrupt or thread context. |
| * |
| ****************************************************************************/ |
| |
| #ifdef SERIAL_HAVE_RXDMA |
| void stm32wb_serial_dma_poll(void); |
| #endif |
| |
| #undef EXTERN |
| #if defined(__cplusplus) |
| } |
| #endif |
| |
| #endif /* __ASSEMBLY__ */ |
| #endif /* __ARCH_ARM_STC_STM32WB_STM32WB_UART_H */ |
