?? timer_a.c
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/**************************************************************************/
/**MITSUBISHI**MITSUBISHI**MITSUBISHI**MITSUBISHI**MITSUBISHI**MITSUBISHI**/
/**************************************************************************/
/**************************************************************************/
/* DISCLAIMER: */
/* We (MITSUBISHI ELECTRIC B.V.) do not warrant that the Software is */
/* free from claims by a third party of copyright, patent, trademark, */
/* trade secret or any other intellectual property infringement. */
/* */
/* Under no circumstances are we liable for any of the following: */
/* */
/* 1. third-party claims against you for losses or damages; */
/* 2. loss of, or damage to, your records or data; or */
/* 3. economic consequential damages (including lost profits or */
/* savings) or incidental damages, even if we are informed of */
/* their possibility. */
/* */
/* We do not warrant uninterrupted or error free operation of the */
/* Software. We have no obligation to provide service, defect */
/* correction, or any maintenance for the Software. We have no */
/* obligation to supply any Software updates or enhancements to you */
/* even if such are or later become available. */
/* */
/* IF YOU DOWNLOAD OR USE THIS SOFTWARE YOU AGREE TO THESE TERMS. */
/* */
/* THERE ARE NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE */
/* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A */
/* PARTICULAR PURPOSE. */
/**************************************************************************/
/**************************************************************************/
/* */
/* Timer A Initialization and Service-Routines for the M3060 */
/* Remarks: timer_value = (Xin*time_solution/clock_select)-1 */
/* For example: time_solution = 1ms */
/* Xin = 10MHz */
/* clock_select = 8 (source=f8) */
/* */
/* => timer_value = 1249d */
/* */
/* Name : TIMER_A.C */
/* Date/Author : 08.04.1997/ST */
/* Change : */
/* (Date) (Author) (Description) */
/* */
/**************************************************************************/
#define public extern
#include "sfr_3061.h"
#undef public
#define public
#include "timer_a.h"
#undef public
/**************************************************************************/
/* */
/* Timer A0 - Initialization for Timer Mode */
/* The timer counts an internal count source */
/* routine may be customized to the user's needs */
/* */
/* Name : timer_a0_init_timer_mode */
/* Date/Author : 08.04.1997/ST */
/* Parameter : */
/* Return : */
/* */
/**************************************************************************/
void near timer_a0_init_timer_mode (void)
{
TA0MR = 0x80; // XX0X XX00
// |||| |||+- must always be 0 in timer mode
// |||| ||+-- must always be 0 in timer mode
// |||| |+--- 0: pulse is not output at pin TA0out
// |||| | 1: pulse is output at pin TA0out
// |||| | TA0out is automatically output
// |||| +---- 0: gate function: timer counts only
// |||| when TA0in is held "L"
// |||| 1: gate function: timer counts only
// |||| when TA0in is held "H"
// |||+------ 0: gate function not available
// ||| 1: gate function available
// ||+------- must always be 0 in timer mode
// |+-------- count source select bits:
// +--------- count source select bits:
// 00: f1
// 01: f8
// 10: f32
// 11: fc32
// Clock prescaler reset flag
// This function is only effective if fc32 is selected
if ((TA0MR & 0xC0)==0xC0)
{
CPSRF = 0x80; // 1--- ----
// +---------- 1: clock prescaler is reset
}
}
/**************************************************************************/
/* */
/* Timer A0 - Initialization for event counter mode */
/* The timer counts pulses from an external source or another */
/* timer's overflow. */
/* routine may be customized to the user's needs */
/* */
/* Name : timer_a0_init_event_counter_mode */
/* Date/Author : 08.04.1997/ST */
/* Parameter : */
/* Return : */
/* */
/**************************************************************************/
void near timer_a0_init_event_counter_mode (void)
{
TA0MR = 0x01; // -X0X XX01
// |||| |||+- must always be 1 in event counter mode
// |||| ||+-- must always be 0 in event counter mode
// |||| |+--- 0: pulse is not output at pin TA0out
// |||| | 1: pulse is output at pin TA0out at
// |||| | overflow/underflow
// |||| | TA0out is automatically output
// |||| +---- 0: counts ext. signal's falling edge
// |||| 1: counts ext. signal's rising edge
// |||| valid only if ext. trigger signal is
// |||| selected by event/trigger select bit
// |||+------ 0: counts up or down according to UDF
// ||| UDF bit 0 : downcount activated
// ||| UDF bit 1 : upcount activated
// ||| 1: counts up or down according to
// ||| TA0out input signal
// ||| TA0out "L": downcount activated
// ||| TA0out "H": upcount activated
// ||| TA0out must configured as input
// ||+------- must always be 0 in event counter mode
// |+-------- 0: count operation reload type
// | 1: count operation free-run type
// +--------- invalid in event counter mode
UDF |= 0x01; // ---- ---X
// +- 0: timer A0 down count
// 1: timer A0 up count
ONSF |= 0xC0; // XX-- ----
// |+-------- timer A0 event/trigger select bits
// +--------- timer A0 event/trigger select bits
// 00: input on TA0in (TA0in must be input)
// 01: overflow of timer B2
// 10: overflow of timer A4
// 11: overflow of timer A1
}
/**************************************************************************/
/* */
/* Timer A0 - Initialization for one shot timer mode */
/* The timer counts once */
/* routine may be customized to the user's needs */
/* */
/* Name : timer_a0_init_one_shot_timer_mode */
/* Date/Author : 08.04.1997/ST */
/* Parameter : */
/* Return : */
/* */
/**************************************************************************/
void near timer_a0_init_one_shot_timer_mode (void)
{
TA0MR = 0xC2; // XX0X XX10
// |||| |||+- must always be 0 in one-shot timer mode
// |||| ||+-- must always be 1 in one-shot timer mode
// |||| |+--- 0: pulse is not output at pin TA0out
// |||| | 1: pulse is output at pin TA0out
// |||| | TA0out is automatically output
// |||| +---- 0: ext. trigger falling edge of
// |||| TA0in input signal
// |||| 1: ext. trigger rising edge of
// |||| TA0in input signal
// |||| TA0in must be configured as input
// |||| TA0in must be selected by
// |||| event/trigger select bit
// |||+------ 0: trigger is one-shot start flag (ONSF)
// ||| 1: trigger is selected by event/trigger
// ||| select bits
// ||+------- must always be 0 in one-shot timer mode
// |+-------- count source select bits
// +--------- count source select bits
// 00: f1
// 01: f8
// 10: f32
// 11: fc32
ONSF |= 0x80; // XX-- ---0
ONSF &= ~(0x01); // || +- timer A0 one-shot start flag
// |+-------- timer A0 event/trigger select bits
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