FreeCalypso > hg > freecalypso-sw
view gsm-fw/bsp/timer.c @ 459:38afaeb194ea
os_tim_fl.c: os_QueryTimer() decompiled w/o real understanding of the logic
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
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date | Mon, 23 Jun 2014 06:54:40 +0000 |
parents | afceeeb2cba1 |
children |
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/******************************************************************************* TEXAS INSTRUMENTS INCORPORATED PROPRIETARY INFORMATION Property of Texas Instruments -- For Unrestricted Internal Use Only Unauthorized reproduction and/or distribution is strictly prohibited. This product is protected under copyright law and trade secret law as an unpublished work. Created 1987, (C) Copyright 1997 Texas Instruments. All rights reserved. Filename : timer.c Description : timer.c Project : drivers Author : pmonteil@tif.ti.com Patrice Monteil. Version number : 1.3 Date and time : 07/23/98 16:25:32 Previous delta : 07/23/98 16:25:32 SCCS file : /db/gsm_asp/db_ht96/dsp_0/gsw/rel_0/mcu_l1/release1.5/mod/emu/EMU_MCMP/eva3_drivers/source/SCCS/s.timer.c Sccs Id (SID) : '@(#) timer.c 1.3 07/23/98 16:25:32 ' *****************************************************************************/ #include "../include/sys_types.h" #include "mem.h" #include "iq.h" #include "timer.h" /*-------------------------------------------------------------- * TIMER_Read() *-------------------------------------------------------------- * Parameters : num of the register to be read * Return :value of the timer register read * Functionality : read one of the TIMER register *--------------------------------------------------------------*/ SYS_UWORD16 TIMER_Read (unsigned short regNum) { SYS_UWORD16 timerReg; switch (regNum) { case 0: timerReg = ( * (volatile SYS_UWORD16 *) TIMER_CNTL_REG) & TIMER_CNTL_MASK; break; case 1: timerReg = *(volatile SYS_UWORD16 *) TIMER_READ_REG; break; case 2: timerReg = ( * (volatile SYS_UWORD16 *) TIMER_MODE_REG) & TIMER_MODE_MASK; break; default: break; } return(timerReg); } /*-------------------------------------------------------------- * TM_ResetTimer() *-------------------------------------------------------------- * Parameters : timer number (1 or 2) * timer value, reload yes or not, scale * Return : none * Functionality : Give the timewr state *--------------------------------------------------------------*/ void TM_ResetTimer (SYS_UWORD16 timerNum, SYS_UWORD16 countValue, SYS_UWORD16 autoReload, SYS_UWORD16 clockScale) { volatile SYS_UWORD16 *cntl; if (timerNum == 1) { cntl = (volatile SYS_UWORD16 *) TIMER1_CNTL; *cntl &= ~(START_STOP | PTV); /* stop and reset values */ (autoReload) ? (*cntl |= AR) : (*cntl &= ~AR); *cntl |= (clockScale << 2 ); /*load the value */ *(volatile SYS_UWORD16 *) TIMER1_LOAD_TIM = countValue; *cntl |= START_STOP; } else { cntl = (volatile SYS_UWORD16 *) TIMER2_CNTL; *cntl &= ~(START_STOP | PTV); /* stop and reset values */ (autoReload) ? (*cntl |= AR) : (*cntl &= ~AR); *cntl |= (clockScale << 2 ); /*load the value */ *(volatile SYS_UWORD16 *) TIMER2_LOAD_TIM = countValue; *cntl |= START_STOP; } } /* * TM_StopTimer * * Parameters : timer number (1 or 2) */ void TM_StopTimer (int timerNum) { volatile SYS_UWORD16 *cntl; if (timerNum == 1) { cntl = (volatile SYS_UWORD16 *) TIMER1_CNTL; } else { cntl = (volatile SYS_UWORD16 *) TIMER2_CNTL; } *cntl &= ~START_STOP; } /* * TM_ReadTimer * * Returns current timer value * * Parameters : timer number (1 or 2) * */ SYS_UWORD16 TM_ReadTimer (int timerNum) { if (timerNum == 1) { return (* (SYS_UWORD16 *) TIMER1_READ_TIM); } else { return (* (SYS_UWORD16 *) TIMER2_READ_TIM); } } /* * TM_StartTimer * * Parameters : timer number (1 or 2) * */ void TM_StartTimer (int timerNum) { volatile SYS_UWORD16 *cntl; if (timerNum == 1) { cntl = (volatile SYS_UWORD16 *) TIMER1_CNTL; } else { cntl = (volatile SYS_UWORD16 *) TIMER2_CNTL; } *cntl |= START_STOP; } void TM_DisableWatchdog (void) { /* volatile variable needed due C to optimization */ volatile SYS_UWORD16 *reg = (volatile SYS_UWORD16 *) TIMER_MODE_REG; *reg = 0xf5; *reg = 0xa0; } /* * TM_EnableWatchdog * */ void TM_EnableWatchdog(void) { * ((volatile SYS_UWORD16 *) TIMER_MODE_REG) = TIMER_WDOG; } /* * TM_ResetWatchdog * * Parameter : Tick count * Use a different value each time, otherwise watchdog bites */ void TM_ResetWatchdog(SYS_UWORD16 count) { * ((volatile SYS_UWORD16 *) TIMER_LOAD_REG) = count; } /* * TM_EnableTimer (int TimerNum) * * Parameter : TimerNum : timer to enable (timer1 or timer2) * */ void TM_EnableTimer (int TimerNum) { volatile SYS_UWORD16 *cntl; if (TimerNum == 1) { cntl = (volatile SYS_UWORD16 *) TIMER1_CNTL; } else { cntl = (volatile SYS_UWORD16 *) TIMER2_CNTL; } *cntl |= TIMER_CLK_EN; } /* * TM_DisableTimer (int TimerNum) * * Parameter : TimerNum : timer to enable (timer1 or timer2) * */ void TM_DisableTimer (int TimerNum) { volatile SYS_UWORD16 *cntl; if (TimerNum == 1) { cntl = (volatile SYS_UWORD16 *) TIMER1_CNTL; } else { cntl = (volatile SYS_UWORD16 *) TIMER2_CNTL; } *cntl &= ~TIMER_CLK_EN; } /*-------------------------------------------------------------- * TIMER_ReadValue() *-------------------------------------------------------------- * Parameters : none * Return : none * Functionality : Read timer value *--------------------------------------------------------------*/ unsigned short TIMER_ReadValue (void) { return(* (SYS_UWORD16 *) TIMER_READ_REG); } /*-------------------------------------------------------------- * TIMER_WriteValue() *-------------------------------------------------------------- * Parameters : none * Return : none * Functionality : Write timer value *--------------------------------------------------------------*/ void TIMER_WriteValue (SYS_UWORD16 value) { * (SYS_UWORD16 *) TIMER_LOAD_REG = value; /*load the value */ }