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DS18B20/onewire.h

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+/**
+  ******************************************************************************
+  * @file    onewire.h
+  * @brief   This file contains all the constants parameters for the OneWire
+  ******************************************************************************
+  * @attention
+  * Usage:
+  *		Uncomment LL Driver for HAL driver
+  *
+  ******************************************************************************
+  */
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef ONEWIRE_H
+#define ONEWIRE_H
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "dwt.h"
+
+/* Driver Selection ----------------------------------------------------------*/
+//#define LL_Driver
+#define CMSIS_Driver
+/* OneWire Timings -----------------------------------------------------------*/
+#define ONEWIRE_RESET_PULSE_US      480   // Äëèòåëüíîñòü èìïóëüñà ñáðîñà
+#define ONEWIRE_PRESENCE_WAIT_US    70    // Îæèäàíèå îòâåòà îò äàò÷èêà
+#define ONEWIRE_PRESENCE_DURATION_US 410  // Äëèòåëüíîñòü ñèãíàëà ïðèñóòñòâèÿ
+
+#define ONEWIRE_WRITE_1_US          6     // Äëèòåëüíîñòü çàïèñè "1"
+#define ONEWIRE_WRITE_0_US          60    // Äëèòåëüíîñòü çàïèñè "0"
+#define ONEWIRE_READ_CMD_US         5     // Âðåìÿ êîììàíäû ÷òåíèÿ áèòà
+#define ONEWIRE_READ_DELAY_US       10    // Çàäåðæêà ïåðåä ñ÷èòûâàíèåì áèòà
+#define ONEWIRE_RECOVERY_TIME_US    1     // Âîññòàíîâëåíèå ïåðåä ñëåäóþùèì ñëîòîì
+#define ONEWIRE_COMMAND_SLOT_US     70    // Îáùåå âðåìÿ êîììàíäû OneWire
+/* Common Register -----------------------------------------------------------*/
+#define ONEWIRE_CMD_SEARCHROM			0xF0
+#define ONEWIRE_CMD_READROM				0x33
+#define ONEWIRE_CMD_MATCHROM			0x55
+#define ONEWIRE_CMD_SKIPROM				0xCC
+
+/* Data Structure ------------------------------------------------------------*/
+typedef enum
+{
+	Input,
+	Output
+} PinMode;
+
+typedef struct
+{
+	uint8_t 		LastDiscrepancy;
+	uint8_t 		LastFamilyDiscrepancy;
+	uint8_t 		LastDeviceFlag;
+	uint8_t			RomByte[8];
+	uint8_t 		RomCnt;
+	uint16_t		DataPin;
+	GPIO_TypeDef	*DataPort;
+} OneWire_t;
+
+/* External Function ---------------------------------------------------------*/
+void OneWire_Init(OneWire_t* OW);
+uint8_t OneWire_Search(OneWire_t* OW, uint8_t Cmd);
+void OneWire_GetDevRom(OneWire_t* OW, uint8_t *dev);
+uint8_t OneWire_Reset(OneWire_t* OW);
+uint8_t OneWire_ReadBit(OneWire_t* OW);
+uint8_t OneWire_ReadByte(OneWire_t* OW);
+void OneWire_WriteByte(OneWire_t* OW, uint8_t byte);
+void OneWire_MatchROM(OneWire_t* OW, uint8_t *Rom);
+void OneWire_Skip(OneWire_t* OW);
+uint8_t OneWire_CRC8(uint8_t *addr, uint8_t len);
+
+void OneWire_Pin_Mode(OneWire_t* OW, PinMode Mode);
+void OneWire_Pin_Level(OneWire_t* OW, uint8_t Level);
+uint8_t OneWire_Pin_Read(OneWire_t* OW);
+void OneWire_WriteBit(OneWire_t* OW, uint8_t bit);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* ONEWIRE_H */