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annotate Small_CPU/Inc/uart.h @ 328:4fe5400567e7 I2C_Improvment

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Set I2C speed to 88kHz, use digital filter only and reworked idle clock recovery The errata describes a possible problem in operation between 88kHz and 100kHz => Set speed as recommended as work around. Based on reference implementation only one filter should be use. Choice was digital because only drawback is lag of wakeup functionality which is not used I2C communication may be randomly interrupted e.g. by a RTE reset or firmware update => reworked recovery function to get I2C devices in idle state again (Clk and SDA HIGH)
author ideenmodellierer
date Wed, 17 Jul 2019 22:42:15 +0200
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.h
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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 ******************************************************************************
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10 * @attention
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11 *
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12 * <h2><center>&copy; COPYRIGHT(c) 2015 heinrichs weikamp</center></h2>
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13 *
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14 ******************************************************************************
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15 */
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16
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17 /* Define to prevent recursive inclusion -------------------------------------*/
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18 #ifndef UART_H
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19 #define UART_H
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20
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21 #ifdef __cplusplus
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22 extern "C" {
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23 #endif
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24
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25 #include "stm32f4xx_hal.h"
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26
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27 void MX_USART2_UART_Init(void);
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28 void MX_USART2_UART_DeInit(void);
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29 uint8_t UART_ButtonAdjust(uint8_t *array);
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30
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31
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32 #ifdef __cplusplus
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33 }
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34 #endif
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35
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36 #endif /* UART_H */
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37
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38 /************************ (C) COPYRIGHT heinrichs weikamp *****END OF FILE****/