| /* |
| * Copyright (c) 2018, NXP Semiconductors, Inc. |
| * All rights reserved. |
| * |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| #include "fsl_tempmon.h" |
| |
| /******************************************************************************* |
| * Definitions |
| ******************************************************************************/ |
| |
| /* Component ID definition, used by tools. */ |
| #ifndef FSL_COMPONENT_ID |
| #define FSL_COMPONENT_ID "platform.drivers.tempmon" |
| #endif |
| |
| /*! @brief TEMPMON calibration data mask. */ |
| #define TEMPMON_HOTTEMPMASK 0xFFU |
| #define TEMPMON_HOTTEMPSHIFT 0x00U |
| #define TEMPMON_HOTCOUNTMASK 0xFFF00U |
| #define TEMPMON_HOTCOUNTSHIFT 0X08U |
| #define TEMPMON_ROOMCOUNTMASK 0xFFF00000U |
| #define TEMPMON_ROOMCOUNTSHIFT 0x14U |
| |
| /*! @brief the room temperature. */ |
| #define TEMPMON_ROOMTEMP 25.0 |
| |
| /******************************************************************************* |
| * Prototypes |
| ******************************************************************************/ |
| |
| /******************************************************************************* |
| * Variables |
| ******************************************************************************/ |
| |
| static uint32_t s_hotTemp; /*!< The value of TEMPMON_TEMPSENSE0[TEMP_VALUE] at room temperature .*/ |
| static uint32_t s_hotCount; /*!< The value of TEMPMON_TEMPSENSE0[TEMP_VALUE] at the hot temperature.*/ |
| static float s_hotT_ROOM; /*!< The value of s_hotTemp minus room temperature(25¡æ).*/ |
| static uint32_t s_roomC_hotC; /*!< The value of s_roomCount minus s_hotCount.*/ |
| |
| /******************************************************************************* |
| * Code |
| ******************************************************************************/ |
| /*! |
| * brief Initializes the TEMPMON module. |
| * |
| * param base TEMPMON base pointer |
| * param config Pointer to configuration structure. |
| */ |
| void TEMPMON_Init(TEMPMON_Type *base, const tempmon_config_t *config) |
| { |
| assert(NULL != config); |
| |
| uint32_t calibrationData; |
| uint32_t roomCount; |
| |
| /* Power on the temperature sensor*/ |
| base->TEMPSENSE0 &= ~TEMPMON_TEMPSENSE0_POWER_DOWN_MASK; |
| |
| /* Set temperature monitor frequency */ |
| base->TEMPSENSE1 = TEMPMON_TEMPSENSE1_MEASURE_FREQ(config->frequency); |
| |
| /* ready to read calibration data */ |
| calibrationData = OCOTP->ANA1; |
| s_hotTemp = (uint32_t)(calibrationData & TEMPMON_HOTTEMPMASK) >> TEMPMON_HOTTEMPSHIFT; |
| s_hotCount = (uint32_t)(calibrationData & TEMPMON_HOTCOUNTMASK) >> TEMPMON_HOTCOUNTSHIFT; |
| roomCount = (uint32_t)(calibrationData & TEMPMON_ROOMCOUNTMASK) >> TEMPMON_ROOMCOUNTSHIFT; |
| |
| s_hotT_ROOM = s_hotTemp - TEMPMON_ROOMTEMP; |
| s_roomC_hotC = roomCount - s_hotCount; |
| |
| /* Set alarm temperature */ |
| TEMPMON_SetTempAlarm(base, config->highAlarmTemp, kTEMPMON_HighAlarmMode); |
| TEMPMON_SetTempAlarm(base, config->panicAlarmTemp, kTEMPMON_PanicAlarmMode); |
| TEMPMON_SetTempAlarm(base, config->lowAlarmTemp, kTEMPMON_LowAlarmMode); |
| } |
| |
| /*! |
| * brief Deinitializes the TEMPMON module. |
| * |
| * param base TEMPMON base pointer |
| */ |
| void TEMPMON_Deinit(TEMPMON_Type *base) |
| { |
| base->TEMPSENSE0 |= TEMPMON_TEMPSENSE0_POWER_DOWN_MASK; |
| } |
| |
| /*! |
| * brief Gets the default configuration structure. |
| * |
| * This function initializes the TEMPMON configuration structure to a default value. The default |
| * values are: |
| * tempmonConfig->frequency = 0x02U; |
| * tempmonConfig->highAlarmTemp = 44U; |
| * tempmonConfig->panicAlarmTemp = 90U; |
| * tempmonConfig->lowAlarmTemp = 39U; |
| * |
| * param config Pointer to a configuration structure. |
| */ |
| void TEMPMON_GetDefaultConfig(tempmon_config_t *config) |
| { |
| assert(config); |
| |
| /* Initializes the configure structure to zero. */ |
| memset(config, 0, sizeof(*config)); |
| |
| /* Default measure frequency */ |
| config->frequency = 0x03U; |
| /* Default high alarm temperature */ |
| config->highAlarmTemp = 40U; |
| /* Default panic alarm temperature */ |
| config->panicAlarmTemp = 90U; |
| /* Default low alarm temperature */ |
| config->lowAlarmTemp = 20U; |
| } |
| |
| /*! |
| * brief Get current temperature with the fused temperature calibration data. |
| * |
| * param base TEMPMON base pointer |
| * return current temperature with degrees Celsius. |
| */ |
| float TEMPMON_GetCurrentTemperature(TEMPMON_Type *base) |
| { |
| /* Check arguments */ |
| assert(NULL != base); |
| |
| uint32_t nmeas; |
| float tmeas; |
| |
| while (!(base->TEMPSENSE0 & TEMPMON_TEMPSENSE0_FINISHED_MASK)) |
| { |
| } |
| |
| /* ready to read temperature code value */ |
| nmeas = (base->TEMPSENSE0 & TEMPMON_TEMPSENSE0_TEMP_CNT_MASK) >> TEMPMON_TEMPSENSE0_TEMP_CNT_SHIFT; |
| |
| /* Calculate temperature */ |
| tmeas = s_hotTemp - (float)((nmeas - s_hotCount) * s_hotT_ROOM / s_roomC_hotC); |
| |
| return tmeas; |
| } |
| |
| /*! |
| * brief Set the temperature count (raw sensor output) that will generate an alarm interrupt. |
| * |
| * param base TEMPMON base pointer |
| * param tempVal The alarm temperature with degrees Celsius |
| * param alarmMode The alarm mode. |
| */ |
| void TEMPMON_SetTempAlarm(TEMPMON_Type *base, uint32_t tempVal, tempmon_alarm_mode alarmMode) |
| { |
| /* Check arguments */ |
| assert(NULL != base); |
| |
| uint32_t tempCodeVal; |
| |
| /* Calculate alarm temperature code value */ |
| tempCodeVal = (uint32_t)(s_hotCount + (s_hotTemp - tempVal) * s_roomC_hotC / s_hotT_ROOM); |
| |
| switch (alarmMode) |
| { |
| case kTEMPMON_HighAlarmMode: |
| /* Set high alarm temperature code value */ |
| base->TEMPSENSE0 |= TEMPMON_TEMPSENSE0_ALARM_VALUE(tempCodeVal); |
| break; |
| |
| case kTEMPMON_PanicAlarmMode: |
| /* Set panic alarm temperature code value */ |
| base->TEMPSENSE2 |= TEMPMON_TEMPSENSE2_PANIC_ALARM_VALUE(tempCodeVal); |
| break; |
| |
| case kTEMPMON_LowAlarmMode: |
| /* Set low alarm temperature code value */ |
| base->TEMPSENSE2 |= TEMPMON_TEMPSENSE2_LOW_ALARM_VALUE(tempCodeVal); |
| break; |
| |
| default: |
| assert(false); |
| break; |
| } |
| } |