Devbugfix UART buffer cleaning:
In the previous version a buffer cleaning function was used which resets the ringbuffer read index. As result the processing of data was stopped until the DMA write comes to the index 0. When reaching it the complete buffer was proceeded including possibly invalid data.
The usage of the cleanbuffer function was replaced by the flush buffer function (meaning the data is discarded but the data index is maintained). There was already a function for this. Because the function was 99% the same as the read function, it was integrated into the ReadData function. Calling the function with parameter flush = 1 will result in a buffer flush.
The workaround of the previous revision was updated to only be applied in case a DiveO2 sensor is operated in stand alone mode.
////////////////////////////////////////////////////////////////////////////////// -*- coding: UTF-8 -*-////// \file Discovery/Src/stm32f4xx_it.c/// \brief This function handles System tick timer and all interupt vectors./// \author Heinrichs Weikamp gmbh/// \date 18/03/2015 15:35:40////// \details////// $Id$////////////////////////////////////////////////////////////////////////////////// \par Copyright (c) 2014-2018 Heinrichs Weikamp gmbh////// This program is free software: you can redistribute it and/or modify/// it under the terms of the GNU General Public License as published by/// the Free Software Foundation, either version 3 of the License, or/// (at your option) any later version.////// This program is distributed in the hope that it will be useful,/// but WITHOUT ANY WARRANTY; without even the implied warranty of/// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the/// GNU General Public License for more details.////// You should have received a copy of the GNU General Public License/// along with this program. If not, see <http://www.gnu.org/licenses/>.//////////////////////////////////////////////////////////////////////////////////// \par Copyright (c) COPYRIGHT(c) 2015 STMicroelectronics////// Redistribution and use in source and binary forms, with or without modification,/// are permitted provided that the following conditions are met:/// 1. Redistributions of source code must retain the above copyright notice,/// this list of conditions and the following disclaimer./// 2. Redistributions in binary form must reproduce the above copyright notice,/// this list of conditions and the following disclaimer in the documentation/// and/or other materials provided with the distribution./// 3. Neither the name of STMicroelectronics nor the names of its contributors/// may be used to endorse or promote products derived from this software/// without specific prior written permission.////// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"/// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE/// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE/// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE/// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL/// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR/// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER/// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,/// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE/// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.///////////////////////////////////////////////////////////////////////////////* Includes ------------------------------------------------------------------*/#include "stm32f4xx_hal.h"#include "stm32f4xx.h"#include "stm32f4xx_it.h"/* USER CODE BEGIN 0 */#include "ostc.h"#ifdef DEMOMODE# include "demo.h" extern TIM_HandleTypeDef TimDemoHandle;#endifextern DMA2D_HandleTypeDef Dma2dHandle;extern TIM_HandleTypeDef TimHandle;/* USER CODE END 0 *//* External variables --------------------------------------------------------*//******************************************************************************//* Cortex-M4 Processor Interruption and Exception Handlers *//******************************************************************************//*** @brief This function handles System tick timer.*/void SysTick_Handler(void){ /* USER CODE BEGIN SysTick_IRQn 0 */ /* USER CODE END SysTick_IRQn 0 */ HAL_IncTick(); HAL_SYSTICK_IRQHandler(); /* USER CODE BEGIN SysTick_IRQn 1 */ /* USER CODE END SysTick_IRQn 1 */}/* USER CODE BEGIN 1 */void DMA2D_IRQHandler(void){ HAL_DMA2D_IRQHandler(&Dma2dHandle);}void DMA2_Stream0_IRQHandler(void){ HAL_DMA_IRQHandler(cpu2DmaSpi.hdmarx);}void DMA2_Stream3_IRQHandler(void){ HAL_DMA_IRQHandler(cpu2DmaSpi.hdmatx);}void EXTI0_IRQHandler(void){ HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_0);}void EXTI1_IRQHandler(void){ HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_1);}void EXTI2_IRQHandler(void){ HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_2);}void EXTI3_IRQHandler(void){ HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_3);}void EXTI4_IRQHandler(void){ HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_4);}void USART1_IRQHandler(void){ HAL_UART_IRQHandler(&UartHandle);}#ifdef USART_IR_HUDvoid USART2_IRQHandler(void){ HAL_UART_IRQHandler(&UartIR_HUD_Handle);}#endifvoid TIM4_IRQHandler(void){ MX_TestPin_Low(); HAL_TIM_IRQHandler(&TimHandle); MX_TestPin_High();}#ifdef DEMOMODEvoid TIM7_IRQHandler(void){ HAL_TIM_IRQHandler(&TimDemoHandle);}#endif