annotate Small_CPU/Src/uart.c @ 408:2fc08a0d1ec3 Improment_NVM

Bugfix invalid voltage / temperatur after coldstart: In case of a cold start (complete power on / off) the RTE could send devie data before values like voltage or temperature have been measured for the first time. As result the device history data was set to it limits causing a minimal voltage of 2V to be displayed in history memory. Workaround for voltage is to initialize it to 6V at startup but for temperature a default value having no impact to the history memory is not possible
author ideenmodellierer
date Sun, 12 Jan 2020 19:50:14 +0100
parents 5f11787b4f42
children 1b995079c045
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38
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1 /**
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2 ******************************************************************************
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3 * @file uart.c
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4 * @author heinrichs weikamp gmbh
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5 * @version V0.0.1
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6 * @date 27-March-2014
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7 * @brief button control
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8 *
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9 @verbatim
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10 ==============================================================================
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11 ##### How to use #####
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12 ==============================================================================
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13 @endverbatim
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14 ******************************************************************************
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15 * @attention
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16 *
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17 * <h2><center>&copy; COPYRIGHT(c) 2015 heinrichs weikamp</center></h2>
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18 *
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19 ******************************************************************************
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20 */
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21 /* Includes ------------------------------------------------------------------*/
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22 #include "uart.h"
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23
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24 /* Private variables ---------------------------------------------------------*/
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25
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26 UART_HandleTypeDef huart2;
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27
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28
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29 /* Exported functions --------------------------------------------------------*/
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30
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31 void MX_USART2_UART_Init(void)
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32 {
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33 /* pullup special */
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34 GPIO_InitTypeDef GPIO_InitStructure;
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35 __GPIOA_CLK_ENABLE();
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36 GPIO_InitStructure.Pin = GPIO_PIN_2;
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37 GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
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38 GPIO_InitStructure.Pull = GPIO_PULLUP;
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39 GPIO_InitStructure.Speed = GPIO_SPEED_FAST;
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40 HAL_GPIO_Init(GPIOA, &GPIO_InitStructure);
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41
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42 /* regular init */
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43 huart2.Instance = USART2;
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44 huart2.Init.BaudRate = 1200;
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45 huart2.Init.WordLength = UART_WORDLENGTH_8B;
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46 huart2.Init.StopBits = UART_STOPBITS_1;
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47 huart2.Init.Parity = UART_PARITY_NONE;
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48 huart2.Init.Mode = UART_MODE_TX_RX;
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49 huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
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50 huart2.Init.OverSampling = UART_OVERSAMPLING_16;
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51 HAL_UART_Init(&huart2);
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52 }
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53
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54
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55 uint8_t UART_ButtonAdjust(uint8_t *array)
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56 {
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57 uint8_t answer[4];
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58
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59 HAL_UART_Transmit(&huart2,array,4,1000);
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60 HAL_UART_Receive(&huart2,answer,4,2000);
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61 if( (answer[0] == array[0])
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62 &&(answer[1] == array[1])
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63 &&(answer[2] == array[2])
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64 &&(answer[3] == array[3]))
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65 return 1;
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66 else
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67 return 0;
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68 }
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69
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70 void MX_USART2_UART_DeInit(void)
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71 {
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72 HAL_UART_DeInit(&huart2);
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73 }
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74
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75
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76 /************************ (C) COPYRIGHT heinrichs weikamp *****END OF FILE****/