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DS18B20/outdate/onewire_uart.h

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+/**
+******************************************************************************
+* @file           : onewire_uart.h
+* @brief          : 1-Wire driver
+* @author         : MicroTechnics (microtechnics.ru)
+*****************************************************************************/
+
+#ifndef ONEWIRE_UART_H
+#define ONEWIRE_UART_H
+
+
+
+/* Includes ----------------------------------------------------------------*/
+
+#include "stm32f1xx_hal.h"
+
+
+
+/* Declarations and definitions --------------------------------------------*/
+extern UART_HandleTypeDef huart1;
+#define onewire_uart                                                  (&huart1)
+#define ONEWIRE_BAUDRATE                                              115200
+#define ONEWIRE_RESET_BAUDRATE                                        9600
+#define ONEWIRE_UART_TIMEOUT                                          10
+#define ONEWIRE_BITS_NUM                                              8
+
+/**
+  * @brief Êîììàíäû OneWire
+  * @details Îïðåäåëÿåò áàéòû äëÿ uart, êîòîðûå áóäóò 
+  * ôîðìèðîâàòü íåîáõîäèìóþ äëèíó èìïóëüñà äëÿ ðàçíûõ êîììàíä 
+  */
+typedef enum
+{
+  ONEWIRE_RESET = 0xF0,         /*!<  @brief Èìïóëüñ äëèíîé 520ìêñ äëÿ êîìàíäû Reset (9600bod) 
+                                      @details 1-Wire òðåáóåò èìïóëüñ äëèòåëüíîñòüþ >480ìêñ */
+  
+  ONEWIRE_PULSE_SHORT = 0xFF,   /*!<  @brief Èìïóëüñ äëèíîé 8.7 ìêñ äëÿ çàïèñè "1"/÷òåíèÿ áèòà (115200bod) 
+                                      @details 1-Wire òðåáóåò èìïóëüñ äëèòåëüíîñòüþ 1-15ìêñ */
+  
+  
+  ONEWIRE_PULSE_LONG = 0x00,    /*!<  @brief èìïóëüñ äëèíîé 78.3 ìêñ äëÿ çàïèñè "0" (115200bod)
+                                      @details 1-Wire òðåáóåò èìïóëüñ äëèòåëüíîñòüþ 60-120ìêñ */
+ 
+//  ONEWIRE_PULSE_1_15US = 0xFF,
+//  ONEWIRE_PULSE_60_120US = 0x00,
+}ONEWIRE_Commands;
+
+
+
+
+/* Functions ---------------------------------------------------------------*/
+/* Âûïîëíÿåò 1-Wire Reset è ïðîâåðÿåò íàëè÷èå óñòðîéñòâ íà øèíå */
+HAL_StatusTypeDef OneWireUART_Reset(UART_HandleTypeDef *huart);
+/* Ïåðåäàåò è ïðèíèìàåò áàéò ÷åðåç 1-Wire */
+uint8_t OneWireUART_ProcessByte(UART_HandleTypeDef *huart, uint8_t byte);
+/* Ïåðåäàåò è ïðèíèìàåò îäèí áèò ÷åðåç 1-Wire */
+uint8_t OneWireUART_ProcessBit(UART_HandleTypeDef *huart, uint8_t bit);
+
+
+
+#endif // #ifndef ONEWIRE_UART_H