mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
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404 lines
14 KiB
C
404 lines
14 KiB
C
/* --COPYRIGHT--,BSD
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* Copyright (c) 2014, Texas Instruments Incorporated
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of Texas Instruments Incorporated nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* --/COPYRIGHT--*/
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//*****************************************************************************
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//
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// rtc_c.c - Driver for the rtc_c Module.
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//
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//*****************************************************************************
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//*****************************************************************************
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//
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//! \addtogroup rtc_c_api rtc_c
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//! @{
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//
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//*****************************************************************************
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#include "inc/hw_regaccess.h"
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#include "inc/hw_memmap.h"
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#ifdef __MSP430_HAS_RTC_C__
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#include "rtc_c.h"
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#include <assert.h>
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void RTC_C_startClock(uint16_t baseAddress)
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{
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HWREG8(baseAddress + OFS_RTCCTL0_H) = RTCKEY_H;
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HWREG8(baseAddress + OFS_RTCCTL13_L) &= ~(RTCHOLD);
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HWREG8(baseAddress + OFS_RTCCTL0_H) = 0x00;
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}
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void RTC_C_holdClock(uint16_t baseAddress)
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{
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HWREG8(baseAddress + OFS_RTCCTL0_H) = RTCKEY_H;
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HWREG8(baseAddress + OFS_RTCCTL13_L) |= RTCHOLD;
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HWREG8(baseAddress + OFS_RTCCTL0_H) = 0x00;
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}
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void RTC_C_setCalibrationFrequency(uint16_t baseAddress,
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uint16_t frequencySelect)
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{
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HWREG8(baseAddress + OFS_RTCCTL0_H) = RTCKEY_H;
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HWREG16(baseAddress + OFS_RTCCTL13) &= ~(RTCCALF_3);
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HWREG16(baseAddress + OFS_RTCCTL13) |= frequencySelect;
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HWREG8(baseAddress + OFS_RTCCTL0_H) = 0x00;
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}
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void RTC_C_setCalibrationData(uint16_t baseAddress,
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uint8_t offsetDirection,
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uint8_t offsetValue)
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{
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HWREG8(baseAddress + OFS_RTCCTL0_H) = RTCKEY_H;
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HWREG16(baseAddress + OFS_RTCOCAL) = offsetValue + offsetDirection;
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HWREG8(baseAddress + OFS_RTCCTL0_H) = 0x00;
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}
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void RTC_C_initCounter(uint16_t baseAddress,
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uint16_t clockSelect,
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uint16_t counterSizeSelect)
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{
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HWREG8(baseAddress + OFS_RTCCTL13) |= RTCHOLD;
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HWREG8(baseAddress + OFS_RTCCTL13) &= ~(RTCMODE);
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HWREG16(baseAddress + OFS_RTCCTL13) &= ~(RTCSSEL_3 | RTCTEV_3);
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HWREG16(baseAddress + OFS_RTCCTL13) |= clockSelect + counterSizeSelect;
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}
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bool RTC_C_setTemperatureCompensation(uint16_t baseAddress,
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uint16_t offsetDirection,
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uint8_t offsetValue)
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{
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while(!(HWREG8(baseAddress + OFS_RTCTCMP_H) & RTCTCRDY_H))
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{
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;
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}
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HWREG16(baseAddress + OFS_RTCTCMP) = offsetValue + offsetDirection;
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if(HWREG8(baseAddress + OFS_RTCTCMP_H) & RTCTCOK_H)
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{
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return(STATUS_SUCCESS);
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}
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else
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{
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return(STATUS_FAIL);
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}
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}
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void RTC_C_initCalendar(uint16_t baseAddress,
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Calendar *CalendarTime,
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uint16_t formatSelect)
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{
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HWREG8(baseAddress + OFS_RTCCTL0_H) = RTCKEY_H;
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HWREG8(baseAddress + OFS_RTCCTL13_L) |= RTCHOLD;
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HWREG16(baseAddress + OFS_RTCCTL13_L) &= ~(RTCBCD);
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HWREG16(baseAddress + OFS_RTCCTL13_L) |= formatSelect;
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HWREG8(baseAddress + OFS_RTCTIM0_L) = CalendarTime->Seconds;
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HWREG8(baseAddress + OFS_RTCTIM0_H) = CalendarTime->Minutes;
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HWREG8(baseAddress + OFS_RTCTIM1_L) = CalendarTime->Hours;
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HWREG8(baseAddress + OFS_RTCTIM1_H) = CalendarTime->DayOfWeek;
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HWREG8(baseAddress + OFS_RTCDATE_L) = CalendarTime->DayOfMonth;
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HWREG8(baseAddress + OFS_RTCDATE_H) = CalendarTime->Month;
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HWREG16(baseAddress + OFS_RTCYEAR) = CalendarTime->Year;
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HWREG8(baseAddress + OFS_RTCCTL0_H) = 0x00;
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}
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Calendar RTC_C_getCalendarTime(uint16_t baseAddress)
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{
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Calendar tempCal;
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while(!(HWREG8(baseAddress + OFS_RTCCTL13_L) & RTCRDY))
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{
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;
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}
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tempCal.Seconds = HWREG8(baseAddress + OFS_RTCTIM0_L);
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tempCal.Minutes = HWREG8(baseAddress + OFS_RTCTIM0_H);
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tempCal.Hours = HWREG8(baseAddress + OFS_RTCTIM1_L);
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tempCal.DayOfWeek = HWREG8(baseAddress + OFS_RTCTIM1_H);
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tempCal.DayOfMonth = HWREG8(baseAddress + OFS_RTCDATE_L);
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tempCal.Month = HWREG8(baseAddress + OFS_RTCDATE_H);
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tempCal.Year = HWREG16(baseAddress + OFS_RTCYEAR);
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return (tempCal);
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}
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void RTC_C_configureCalendarAlarm(uint16_t baseAddress,
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RTC_C_configureCalendarAlarmParam *param)
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{
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//Each of these is XORed with 0x80 to turn on if an integer is passed,
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//or turn OFF if RTC_C_ALARM_OFF (0x80) is passed.
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HWREG8(baseAddress + OFS_RTCAMINHR_L) = (param->minutesAlarm ^ 0x80);
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HWREG8(baseAddress + OFS_RTCAMINHR_H) = (param->hoursAlarm ^ 0x80);
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HWREG8(baseAddress + OFS_RTCADOWDAY_L) = (param->dayOfWeekAlarm ^ 0x80);
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HWREG8(baseAddress + OFS_RTCADOWDAY_H) = (param->dayOfMonthAlarm ^ 0x80);
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}
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void RTC_C_setCalendarEvent(uint16_t baseAddress,
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uint16_t eventSelect)
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{
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HWREG8(baseAddress + OFS_RTCCTL0_H) = RTCKEY_H;
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HWREG8(baseAddress + OFS_RTCCTL13_L) &= ~(RTCTEV_3); //Reset bits
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HWREG8(baseAddress + OFS_RTCCTL13_L) |= eventSelect;
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HWREG8(baseAddress + OFS_RTCCTL0_H) = 0x00;
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}
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uint32_t RTC_C_getCounterValue(uint16_t baseAddress)
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{
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if((HWREG8(baseAddress + OFS_RTCCTL13) & RTCHOLD)
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|| (HWREG8(baseAddress + OFS_RTCPS1CTL) & RT1PSHOLD))
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{
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return (0);
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}
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uint32_t counterValue_L = HWREG16(baseAddress + OFS_RTCTIM0);
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uint32_t counterValue_H = HWREG16(baseAddress + OFS_RTCTIM1);
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return ((counterValue_H << 16) + counterValue_L);
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}
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void RTC_C_setCounterValue(uint16_t baseAddress,
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uint32_t counterValue)
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{
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uint16_t mode = HWREG16(baseAddress + OFS_RTCCTL13) & RTCTEV_3;
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if(mode == RTC_C_COUNTERSIZE_8BIT && counterValue > 0xF)
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{
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counterValue = 0xF;
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}
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else if(mode == RTC_C_COUNTERSIZE_16BIT && counterValue > 0xFF)
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{
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counterValue = 0xFF;
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}
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else if(mode == RTC_C_COUNTERSIZE_24BIT && counterValue > 0xFFFFFF)
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{
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counterValue = 0xFFFFFF;
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}
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HWREG16(baseAddress + OFS_RTCTIM0) = counterValue;
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HWREG16(baseAddress + OFS_RTCTIM1) = (counterValue >> 16);
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}
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void RTC_C_initCounterPrescale(uint16_t baseAddress,
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uint8_t prescaleSelect,
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uint16_t prescaleClockSelect,
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uint16_t prescaleDivider)
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{
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//Reset bits and set clock select
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HWREG16(baseAddress + OFS_RTCPS0CTL + prescaleSelect) =
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prescaleClockSelect + prescaleDivider;
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}
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void RTC_C_holdCounterPrescale(uint16_t baseAddress,
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uint8_t prescaleSelect)
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{
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HWREG8(baseAddress + OFS_RTCPS0CTL_H + prescaleSelect) |= RT0PSHOLD_H;
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}
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void RTC_C_startCounterPrescale(uint16_t baseAddress,
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uint8_t prescaleSelect)
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{
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HWREG8(baseAddress + OFS_RTCPS0CTL_H + prescaleSelect) &= ~(RT0PSHOLD_H);
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}
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void RTC_C_definePrescaleEvent(uint16_t baseAddress,
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uint8_t prescaleSelect,
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uint8_t prescaleEventDivider)
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{
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HWREG8(baseAddress + OFS_RTCPS0CTL_L + prescaleSelect) &= ~(RT0IP_7);
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HWREG8(baseAddress + OFS_RTCPS0CTL_L +
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prescaleSelect) |= prescaleEventDivider;
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}
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uint8_t RTC_C_getPrescaleValue(uint16_t baseAddress,
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uint8_t prescaleSelect)
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{
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if(RTC_C_PRESCALE_0 == prescaleSelect)
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{
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return (HWREG8(baseAddress + OFS_RTCPS_L));
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}
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else if(RTC_C_PRESCALE_1 == prescaleSelect)
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{
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return (HWREG8(baseAddress + OFS_RTCPS_H));
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}
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else
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{
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return (0);
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}
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}
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void RTC_C_setPrescaleValue(uint16_t baseAddress,
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uint8_t prescaleSelect,
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uint8_t prescaleCounterValue)
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{
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HWREG8(baseAddress + OFS_RTCCTL0_H) = RTCKEY_H;
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if(RTC_C_PRESCALE_0 == prescaleSelect)
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{
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HWREG8(baseAddress + OFS_RTCPS_L) = prescaleCounterValue;
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}
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else if(RTC_C_PRESCALE_1 == prescaleSelect)
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{
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HWREG8(baseAddress + OFS_RTCPS_H) = prescaleCounterValue;
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}
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HWREG8(baseAddress + OFS_RTCCTL0_H) = 0x00;
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}
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void RTC_C_enableInterrupt(uint16_t baseAddress,
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uint8_t interruptMask)
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{
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if(interruptMask & (RTCOFIE + RTCTEVIE + RTCAIE + RTCRDYIE))
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{
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HWREG8(baseAddress + OFS_RTCCTL0_H) = RTCKEY_H;
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HWREG8(baseAddress + OFS_RTCCTL0_L) |=
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(interruptMask & (RTCOFIE + RTCTEVIE + RTCAIE + RTCRDYIE));
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HWREG8(baseAddress + OFS_RTCCTL0_H) = 0x00;
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}
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if(interruptMask & RTC_C_PRESCALE_TIMER0_INTERRUPT)
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{
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HWREG8(baseAddress + OFS_RTCPS0CTL_L) |= RT0PSIE;
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}
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if(interruptMask & RTC_C_PRESCALE_TIMER1_INTERRUPT)
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{
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HWREG8(baseAddress + OFS_RTCPS1CTL_L) |= RT1PSIE;
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}
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}
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void RTC_C_disableInterrupt(uint16_t baseAddress,
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uint8_t interruptMask)
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{
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if(interruptMask & (RTCOFIE + RTCTEVIE + RTCAIE + RTCRDYIE))
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{
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HWREG8(baseAddress + OFS_RTCCTL0_H) = RTCKEY_H;
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HWREG8(baseAddress + OFS_RTCCTL0_L) &=
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~(interruptMask & (RTCOFIE + RTCTEVIE + RTCAIE + RTCRDYIE));
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HWREG8(baseAddress + OFS_RTCCTL0_H) = 0x00;
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}
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if(interruptMask & RTC_C_PRESCALE_TIMER0_INTERRUPT)
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{
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HWREG8(baseAddress + OFS_RTCPS0CTL_L) &= ~(RT0PSIE);
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}
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if(interruptMask & RTC_C_PRESCALE_TIMER1_INTERRUPT)
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{
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HWREG8(baseAddress + OFS_RTCPS1CTL_L) &= ~(RT1PSIE);
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}
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}
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uint8_t RTC_C_getInterruptStatus(uint16_t baseAddress,
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uint8_t interruptFlagMask)
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{
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uint8_t tempInterruptFlagMask = 0x0000;
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tempInterruptFlagMask |= (HWREG8(baseAddress + OFS_RTCCTL0_L)
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& ((interruptFlagMask >> 4)
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& (RTCOFIFG +
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RTCTEVIFG +
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RTCAIFG +
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RTCRDYIFG)));
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tempInterruptFlagMask = tempInterruptFlagMask << 4;
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if(interruptFlagMask & RTC_C_PRESCALE_TIMER0_INTERRUPT)
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{
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if(HWREG8(baseAddress + OFS_RTCPS0CTL_L) & RT0PSIFG)
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{
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tempInterruptFlagMask |= RTC_C_PRESCALE_TIMER0_INTERRUPT;
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}
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}
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if(interruptFlagMask & RTC_C_PRESCALE_TIMER1_INTERRUPT)
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{
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if(HWREG8(baseAddress + OFS_RTCPS1CTL_L) & RT1PSIFG)
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{
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tempInterruptFlagMask |= RTC_C_PRESCALE_TIMER1_INTERRUPT;
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}
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}
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return (tempInterruptFlagMask);
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}
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void RTC_C_clearInterrupt(uint16_t baseAddress,
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uint8_t interruptFlagMask)
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{
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if(interruptFlagMask & (RTC_C_TIME_EVENT_INTERRUPT +
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RTC_C_CLOCK_ALARM_INTERRUPT +
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RTC_C_CLOCK_READ_READY_INTERRUPT +
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RTC_C_OSCILLATOR_FAULT_INTERRUPT))
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{
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HWREG8(baseAddress + OFS_RTCCTL0_H) = RTCKEY_H;
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HWREG8(baseAddress + OFS_RTCCTL0_L) &=
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~((interruptFlagMask >> 4) & (RTCOFIFG +
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RTCTEVIFG +
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RTCAIFG +
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RTCRDYIFG));
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HWREG8(baseAddress + OFS_RTCCTL0_H) = 0x00;
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}
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if(interruptFlagMask & RTC_C_PRESCALE_TIMER0_INTERRUPT)
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{
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HWREG8(baseAddress + OFS_RTCPS0CTL_L) &= ~(RT0PSIFG);
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}
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if(interruptFlagMask & RTC_C_PRESCALE_TIMER1_INTERRUPT)
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{
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HWREG8(baseAddress + OFS_RTCPS1CTL_L) &= ~(RT1PSIFG);
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}
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}
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uint16_t RTC_C_convertBCDToBinary(uint16_t baseAddress,
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uint16_t valueToConvert)
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{
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HWREG16(baseAddress + OFS_BCD2BIN) = valueToConvert;
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return (HWREG16(baseAddress + OFS_BCD2BIN));
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}
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uint16_t RTC_C_convertBinaryToBCD(uint16_t baseAddress,
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uint16_t valueToConvert)
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{
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HWREG16(baseAddress + OFS_BIN2BCD) = valueToConvert;
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return (HWREG16(baseAddress + OFS_BIN2BCD));
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}
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#endif
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//*****************************************************************************
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//
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//! Close the doxygen group for rtc_c_api
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//! @}
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//
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//*****************************************************************************
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