544 lines
14 KiB
C
544 lines
14 KiB
C
/**
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******************************************************************************
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* @file dallas_tools.c
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* @brief Äðàéâåð äëÿ ðàáîòû ñ äàò÷èêàìè òåìïåðàòóðû DS18B20
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* @author MicroTechnics (microtechnics.ru)
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******************************************************************************
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@details
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Ýòîò ôàéë ñîäåðæèò ðåàëèçàöèþ ôóíêöèé äëÿ ðàáîòû ñ äàò÷èêîì DS18B20
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÷åðåç èíòåðôåéñ 1-Wire. Îí ïðåäîñòàâëÿåò ôóíêöèè äëÿ ÷òåíèÿ è çàïèñè
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êîíôèãóðàöèè, âûïîëíåíèÿ èçìåðåíèé è îáðàáîòêè ïîëó÷åííûõ äàííûõ.
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*****************************************************************************/
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/* Includes ----------------------------------------------------------------*/
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#include "dallas_tools.h"
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#include "string.h"
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/* Declarations and definitions --------------------------------------------*/
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/* Functions ---------------------------------------------------------------*/
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/**
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* @brief Ôóíêöèÿ äëÿ íàõîæäåíèÿ íîâîãî äàò÷èêà íà ìåñòî ïîòåðÿííîãî
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* @param sensor Óêàçàòåëü íà ñòðóêòóðó äàò÷èêà
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* @retval HAL Status
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*/
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HAL_StatusTypeDef Dallas_ReplaceLostedSensor(DALLAS_HandleTypeDef *sensor)
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{
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HAL_StatusTypeDef result;
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if(sensor == NULL)
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return HAL_ERROR;
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if(sensor->isLost)
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{
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if(DS18B20_Search(&DS, &OW) != HAL_OK)
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return HAL_ERROR;
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if(sensor->Init.init_func(sensor->onewire, sensor) != HAL_OK)
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return HAL_ERROR;
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return HAL_OK;
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}
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else
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{
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return HAL_OK;
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}
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}
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/**
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* @brief Ôóíêöèÿ äëÿ èíèèöàëèçàöèè íîâîãî äàò÷èêà â ñòðóêòóðå
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* @param onewire Óêàçàòåëü íà ñòðóêòóðó OneWire
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* @param sensor Óêàçàòåëü íà ñòðóêòóðó äàò÷èêà
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* @retval HAL Status
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*/
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HAL_StatusTypeDef Dallas_AddNewSensors(OneWire_t *onewire, DALLAS_HandleTypeDef *sensor)
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{
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HAL_StatusTypeDef result;
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if(onewire == NULL)
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return HAL_ERROR;
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if(sensor == NULL)
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return HAL_ERROR;
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sensor->onewire = onewire;
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result = sensor->Init.init_func(onewire, sensor);
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return result;
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}
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/**
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* @brief Èíèöèàëèçèðóåò ñòðóêòóðó äàò÷èêà ïî ROM
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* @param onewire Óêàçàòåëü íà ñòðóêòóðó OneWire
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* @param sensor Óêàçàòåëü íà ñòðóêòóðó äàò÷èêà
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* @retval HAL Status
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*/
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HAL_StatusTypeDef Dallas_SensorInitByROM(OneWire_t *onewire, DALLAS_HandleTypeDef *sensor)
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{
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HAL_StatusTypeDef result;
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if(onewire == NULL)
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return HAL_ERROR;
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if(sensor == NULL)
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return HAL_ERROR;
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uint8_t ROM[8] = {0};
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ROM[0] = (sensor->Init.ROM >> (7*8)) & 0xFF;
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ROM[1] = (sensor->Init.ROM >> (6*8)) & 0xFF;
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ROM[2] = (sensor->Init.ROM >> (5*8)) & 0xFF;
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ROM[3] = (sensor->Init.ROM >> (4*8)) & 0xFF;
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ROM[4] = (sensor->Init.ROM >> (3*8)) & 0xFF;
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ROM[5] = (sensor->Init.ROM >> (2*8)) & 0xFF;
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ROM[6] = (sensor->Init.ROM >> (1*8)) & 0xFF;
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ROM[7] = (sensor->Init.ROM) & 0xFF;
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if(DS18B20_IsValidAddress(ROM) != HAL_OK)
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return HAL_ERROR;
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uint8_t comparebytes = DALLAS_ROM_SIZE;
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int ROM_ind = 0;
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for(int i = 0; i < onewire->RomCnt; i++)
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{
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comparebytes = DALLAS_ROM_SIZE;
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for(int rom_byte = 0; rom_byte < DALLAS_ROM_SIZE; rom_byte++)
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{
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if(DS.DevAddr[i][rom_byte] == ROM[rom_byte])
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comparebytes--;
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}
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if(comparebytes == 0)
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{
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ROM_ind = i;
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break;
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}
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}
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/* Ïðîâåðêà ïðèñóòñòâóåò ëè âûáðàííûé äàò÷èê íà ëèíèè */
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if(comparebytes == 0)
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{
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result = Dallas_SensorInit(onewire, sensor, &DS.DevAddr[ROM_ind]);
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return result;
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}
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else
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{
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return HAL_ERROR;
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}
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}
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/**
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* @brief Èíèöèàëèçèðóåò ñòðóêòóðó äàò÷èêà ïî ïîëüçîâàòåëüñêèì áàéòàì
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* @param onewire Óêàçàòåëü íà ñòðóêòóðó OneWire
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* @param sensor Óêàçàòåëü íà ñòðóêòóðó äàò÷èêà
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* @retval HAL Status
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*/
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HAL_StatusTypeDef Dallas_SensorInitByUserBytes(OneWire_t *onewire, DALLAS_HandleTypeDef *sensor)
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{
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HAL_StatusTypeDef result;
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if(onewire == NULL)
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return HAL_ERROR;
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if(sensor == NULL)
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return HAL_ERROR;
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uint8_t UserByte1 = sensor->Init.UserBytes12 & 0xFF;
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uint8_t UserByte2 = sensor->Init.UserBytes12 >> 8;
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uint8_t UserByte3 = sensor->Init.UserBytes34 & 0xFF;
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uint8_t UserByte4 = sensor->Init.UserBytes34 >> 8;
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uint8_t UserByte12Cmp = 0;
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uint8_t UserByte34Cmp = 0;
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DALLAS_ScratchpadTypeDef scratchpad;
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for(int i = 0; i < onewire->RomCnt; i++)
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{
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/* Ïðîâåðêà ïðèñóòñòâóåò ëè âûáðàííûé äàò÷èê íà ëèíèè */
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result = DS18B20_ReadScratchpad(onewire, (uint8_t *)&DS.DevAddr[i], (uint8_t *)&scratchpad);
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if (result != HAL_OK)
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return result;
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/* Ñðàâíåíèå UserByte1 è UserByte2, åñëè îíè íå ðàâíû íóëþ */
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if(sensor->Init.UserBytes12 != NULL)
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{
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if( (scratchpad.tHighRegister == UserByte1) &&
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(scratchpad.tLowRegister == UserByte2))
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{
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UserByte12Cmp = 1;
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}
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}/* Åñëè ñðàâíåíèå UserByte1 è UserByte2 íå âûáðàíî, òî ñ÷èòàåì ÷òî îíè ñîâïàäàþò */
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else
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{
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UserByte12Cmp = 1;
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}
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/* Ñðàâíåíèå UserByte3 è UserByte4, åñëè îíè íå ðàâíû íóëþ */
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if(sensor->Init.UserBytes34 != NULL)
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{
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if( (scratchpad.UserByte3 == UserByte3) &&
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(scratchpad.UserByte4 == UserByte4))
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{
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UserByte34Cmp = 1;
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}
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}/* Åñëè ñðàâíåíèå UserByte3 è UserByte4 íå âûáðàíî, òî ñ÷èòàåì ÷òî îíè îäèíàêîâûå */
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else
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{
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UserByte34Cmp = 1;
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}
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/* Åñëè íàøëè íóæíûé äàò÷èê - çàâåðøàåì ïîèñê */
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if(UserByte12Cmp && UserByte34Cmp)
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{
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// sensor->isInitialized = 1;
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// sensor->Init.init_func = (HAL_StatusTypeDef (*)())Dallas_SensorInitByUserBytes;
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result = Dallas_SensorInit(onewire, sensor, &DS.DevAddr[i]);
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return result;
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}
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}
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/* Âîçâðàùàåì îøèáêó åñëè íå íàøëè */
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return HAL_ERROR;
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}
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/**
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* @brief Èíèöèàëèçèðóåò ñòðóêòóðó äàò÷èêà ïî ïîðÿäêîâîìó íîìåðó
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* @param onewire Óêàçàòåëü íà ñòðóêòóðó OneWire
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* @param sensor Óêàçàòåëü íà ñòðóêòóðó äàò÷èêà
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* @retval HAL Status
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* @details Ïîðÿäêîâûé íîìåð äàò÷èêà â ñïèñêå íàéäåííûõ.
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* Ò.å. êàêèì ïî ñ÷åòó ýòîò äàò÷èê áûë íàéäåí
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*/
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HAL_StatusTypeDef Dallas_SensorInitByInd(OneWire_t *onewire, DALLAS_HandleTypeDef *sensor)
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{
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HAL_StatusTypeDef result;
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if(onewire == NULL)
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return HAL_ERROR;
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if(sensor == NULL)
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return HAL_ERROR;
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// sensor->onewire = onewire;
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// sensor->sensROM = &DS.DevAddr[sensor->Init.SensInd];
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// sensor->Init.init_func = (HAL_StatusTypeDef (*)())Dallas_SensorInitByInd;
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result = Dallas_SensorInit(onewire, sensor, &DS.DevAddr[sensor->Init.SensInd]);
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return result;
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}
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/**
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* @brief Èíèöèàëèçèðóåò äàò÷èê äëÿ ðàáîòû
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* @param onewire Óêàçàòåëü íà ñòðóêòóðó OneWire
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* @param sensor Óêàçàòåëü íà ñòðóêòóðó äàò÷èêà
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* @param ROM ROM äàò÷èêà, êîòîðûé íàäî èíèöèàëèçèðîâàòü
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* @retval HAL Status
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*/
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HAL_StatusTypeDef Dallas_SensorInit(OneWire_t *onewire, DALLAS_HandleTypeDef *sensor, uint8_t (*ROM)[DALLAS_ROM_SIZE])
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{
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HAL_StatusTypeDef result;
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if(sensor == NULL)
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return HAL_ERROR;
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if(onewire == 0)
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return HAL_ERROR;
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sensor->onewire = onewire;
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for(int i = 0; i < DALLAS_ROM_SIZE; i++)
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sensor->sensROM[i] = (*ROM)[i];
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/* Ïðîâåðêà ïðèñóòñòâóåò ëè âûáðàííûé äàò÷èê íà ëèíèè */
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result = DS18B20_ReadScratchpad(sensor->onewire, (uint8_t *)sensor->sensROM, (uint8_t *)&sensor->scratchpad);
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if (result == HAL_OK)
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{
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/* Óñòàíîâêà ðàçðåøåíèÿ */
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result = DS18B20_SetResolution(onewire, (uint8_t *)ROM, sensor->Init.Resolution);
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if (result == HAL_OK)
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{
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sensor->isInitialized = 1;
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return HAL_OK;
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}
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else
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{
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sensor->isInitialized = 0;
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return result;
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}
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}
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else
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{
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sensor->isInitialized = 0;
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return result;
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}
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}
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/**
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* @brief Äåèíèöèàëèçèðóåò ñòðóêòóðó äàò÷èêà
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* @param onewire Óêàçàòåëü íà ñòðóêòóðó OneWire
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* @param sensor Óêàçàòåëü íà ñòðóêòóðó äàò÷èêà
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* @param sens_ind Ïîðÿäêîâûé íîìåð äàò÷èêà â ñòðóêòóðå
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* @retval HAL Status
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*/
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HAL_StatusTypeDef Dallas_SensorDeInit(DALLAS_HandleTypeDef *sensor)
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{
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if(sensor == NULL)
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return HAL_ERROR;
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DALLAS_InitStructTypeDef initbuff = sensor->Init;
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memset(sensor, 0, sizeof(DALLAS_HandleTypeDef));
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sensor->Init = initbuff;
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return HAL_OK;
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}
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/**
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* @brief Çàïóñêàåò èçìåðåíèå òåìïåðàòóðû íà âñåõ äàò÷èêàõ
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* @param onewire Óêàçàòåëü íà ñòðóêòóðó OneWire
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* @param waitCondition Óñëîâèå îæèäàíèÿ çàâåðøåíèÿ ïðåîáðàçîâàíèÿ
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* @param dallas_delay_ms Âðåìÿ îæèäàíèÿ îêîí÷àíèÿ êîíâåðñèè
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* @retval HAL Status
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*/
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HAL_StatusTypeDef Dallas_StartConvertTAll(OneWire_t *onewire, DALLAS_WaitConvertionTypeDef waitCondition, uint8_t dallas_delay_ms)
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{
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HAL_StatusTypeDef result;
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uint8_t rxDummyData;
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if(onewire == NULL)
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return HAL_ERROR;
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// Îòïðàâêà êîìàíäû íà÷àëà ïðåîáðàçîâàíèÿ òåìïåðàòóðû
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result = DS18B20_StartConvTAll(onewire);
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if(result != HAL_OK)
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{
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return result;
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}
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// Îæèäàíèå çàâåðøåíèÿ ïðåîáðàçîâàíèÿ, ïóòåì ïðîâåðêè øèíû
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if (waitCondition == DALLAS_WAIT_BUS)
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{
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result = DS18B20_WaitForEndConvertion(onewire);
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return result;
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}
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// Îæèäàíèå çàâåðøåíèÿ ïðåîáðàçîâàíèÿ, ïóòåì çàäåðæêè
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if (waitCondition == DALLAS_WAIT_DELAY)
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{
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uint32_t delayValueMs = 0;
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switch (dallas_delay_ms)
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{
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case DALLAS_CONFIG_9_BITS:
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delayValueMs = DALLAS_DELAY_MS_9_BITS;
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break;
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case DALLAS_CONFIG_10_BITS:
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delayValueMs = DALLAS_DELAY_MS_10_BITS;
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break;
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case DALLAS_CONFIG_11_BITS:
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delayValueMs = DALLAS_DELAY_MS_11_BITS;
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break;
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case DALLAS_CONFIG_12_BITS:
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delayValueMs = DALLAS_DELAY_MS_12_BITS;
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break;
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default:
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break;
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}
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HAL_Delay(delayValueMs);
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}
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return result;
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}
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/**
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* @brief Èçìåðÿåò òåìïåðàòóðó íà äàò÷èêå
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* @param sensor Óêàçàòåëü íà ñòðóêòóðó äàò÷èêà
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* @param waitCondition Óñëîâèå îæèäàíèÿ çàâåðøåíèÿ ïðåîáðàçîâàíèÿ
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* @retval HAL Status
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*/
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HAL_StatusTypeDef Dallas_ConvertT(DALLAS_HandleTypeDef *sensor, DALLAS_WaitConvertionTypeDef waitCondition)
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{
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HAL_StatusTypeDef result;
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uint8_t rxDummyData;
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if(sensor == NULL)
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return HAL_ERROR;
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if(sensor->isInitialized == 0)
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return HAL_ERROR;
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/* Ïðîâåðêà ïðèñóòñòâóåò ëè âûáðàííûé äàò÷èê íà ëèíèè */
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result = Dallas_IsConnected(sensor);
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if (result != HAL_OK)
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return result;
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// Îòïðàâêà êîìàíäû íà÷àëà ïðåîáðàçîâàíèÿ òåìïåðàòóðû
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result = DS18B20_StartConvT(sensor->onewire, (uint8_t *)sensor->sensROM);
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if(result != HAL_OK)
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{
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return result;
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}
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// Îæèäàíèå çàâåðøåíèÿ ïðåîáðàçîâàíèÿ, ïóòåì ïðîâåðêè øèíû
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if (waitCondition == DALLAS_WAIT_BUS)
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{
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result = DS18B20_WaitForEndConvertion(sensor->onewire);
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if(result == HAL_TIMEOUT)
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{
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sensor->f.timeout_convertion_cnt++;
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}
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return result;
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}
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// Îæèäàíèå çàâåðøåíèÿ ïðåîáðàçîâàíèÿ, ïóòåì çàäåðæêè
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if (waitCondition == DALLAS_WAIT_DELAY)
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{
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uint32_t delayValueMs = 0;
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switch (sensor->scratchpad.ConfigRegister)
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{
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case DALLAS_CONFIG_9_BITS:
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delayValueMs = DALLAS_DELAY_MS_9_BITS;
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break;
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case DALLAS_CONFIG_10_BITS:
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delayValueMs = DALLAS_DELAY_MS_10_BITS;
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break;
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case DALLAS_CONFIG_11_BITS:
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delayValueMs = DALLAS_DELAY_MS_11_BITS;
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break;
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case DALLAS_CONFIG_12_BITS:
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delayValueMs = DALLAS_DELAY_MS_12_BITS;
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break;
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default:
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break;
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}
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HAL_Delay(delayValueMs);
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}
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/* Íå ñ÷èòûâàåì òåìïåðàòóðó, åñëè íå âûáðàíî îæèäàíèå îêîí÷àíèÿ ïðåîáðàçîâàíèÿ */
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if(waitCondition != DALLAS_WAIT_NONE)
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{
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result = Dallas_ReadTemperature(sensor);
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}
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return result;
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}
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/**
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* @brief ×èòàåò èçìåðåííóþ äàò÷èêîì òåìïåðàòóðó
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* @param sensor Óêàçàòåëü íà ñòðóêòóðó äàò÷èêà
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|
* @retval HAL Status
|
|
*/
|
|
HAL_StatusTypeDef Dallas_ReadTemperature(DALLAS_HandleTypeDef *sensor)
|
|
{
|
|
HAL_StatusTypeDef result;
|
|
|
|
if(sensor == NULL)
|
|
return HAL_ERROR;
|
|
if(sensor->isInitialized == 0)
|
|
return HAL_ERROR;
|
|
|
|
/* Ïðîâåðêà ïðèñóòñòâóåò ëè âûáðàííûé äàò÷èê íà ëèíèè */
|
|
result = Dallas_IsConnected(sensor);
|
|
if (result != HAL_OK)
|
|
return result;
|
|
|
|
|
|
result = DS18B20_CalcTemperature(sensor->onewire, (uint8_t *)sensor->sensROM, (uint8_t *)&sensor->scratchpad, &sensor->temperature);
|
|
|
|
if (result != HAL_OK)
|
|
{
|
|
sensor->f.read_temperature_err_cnt++;
|
|
return result;
|
|
}
|
|
|
|
return HAL_OK;
|
|
}
|
|
|
|
/**
|
|
* @brief Ïðîâåðÿåò ïîäêëþ÷åí ëè äàò÷èê (÷òåíèå scratchpad)
|
|
* @param sensor Óêàçàòåëü íà ñòðóêòóðó äàò÷èêà
|
|
* @retval HAL Status
|
|
*/
|
|
HAL_StatusTypeDef Dallas_IsConnected(DALLAS_HandleTypeDef *sensor)
|
|
{
|
|
HAL_StatusTypeDef result;
|
|
|
|
if(sensor->isInitialized == 0)
|
|
return HAL_ERROR;
|
|
|
|
result = DS18B20_ReadScratchpad(sensor->onewire, (uint8_t *)sensor->sensROM, (uint8_t *)&sensor->scratchpad);
|
|
|
|
if (result == HAL_OK)
|
|
{
|
|
sensor->isConnected = 1;
|
|
sensor->isLost = 0;
|
|
return HAL_OK;
|
|
}
|
|
else
|
|
{
|
|
|
|
if(sensor->isConnected == 1)
|
|
{
|
|
sensor->f.disconnect_cnt++;
|
|
sensor->isLost = 1;
|
|
}
|
|
sensor->isConnected = 0;
|
|
|
|
Dallas_ReplaceLostedSensor(sensor);
|
|
return HAL_BUSY; // èñïîëüçóþ busy, ÷òîáû îòëè÷àòü ñèòóàöèþ îò HAL_ERROR
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Çàïèñûâàåò ïîëüçîâàòåëüñêèå áàéòû
|
|
* @param sensor Óêàçàòåëü íà ñòðóêòóðó äàò÷èêà
|
|
* @param UserBytes12 Ïîëüçîâàòåëüñêèå áàéòû 1 è 2
|
|
* @param UserBytes34 Ïîëüçîâàòåëüñêèå áàéòû 3 è 4
|
|
* @param UserBytesMask Ìàñêà, êàêèå áàéòû çàïèñûâàòü, à êàêèå íåò
|
|
* @retval HAL Status
|
|
* @details ñòàðøèé áàéò - UserByte4/UserByte2, ìëàäøèé - UserByte3/UserByte1.
|
|
*/
|
|
HAL_StatusTypeDef Dallas_WriteUserBytes(DALLAS_HandleTypeDef *sensor, uint16_t UserBytes12, uint16_t UserBytes34, uint8_t UserBytesMask)
|
|
{
|
|
HAL_StatusTypeDef result;
|
|
|
|
if(sensor->isInitialized == 0)
|
|
return HAL_ERROR;
|
|
|
|
/* Ïðîâåðêà ïðèñóòñòâóåò ëè âûáðàííûé äàò÷èê íà ëèíèè */
|
|
result = Dallas_IsConnected(sensor);
|
|
if (result != HAL_OK)
|
|
return result;
|
|
|
|
result = DS18B20_WriteUserBytes(sensor->onewire, (uint8_t *)sensor->sensROM, UserBytes12, UserBytes34, UserBytesMask);
|
|
if (result != HAL_OK)
|
|
{
|
|
sensor->f.other_err_cnt++;
|
|
return result;
|
|
}
|
|
result = DS18B20_ReadScratchpad(sensor->onewire, (uint8_t *)sensor->sensROM, (uint8_t *)&sensor->scratchpad);
|
|
if (result != HAL_OK)
|
|
{
|
|
return result;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|