// *************************************************************************************************
// @fn stop_stopwatch
// @brief Stops stopwatch timer interrupt and sets stopwatch state to off.
// Does not reset stopwatch count.
// @param none
// @return none
// *************************************************************************************************
void stop_stopwatch(void)
{
if(StopwatchMode == MODE_STOPTIMER)
{
// Clear timer interrupt enable
TA0CCTL2 &= ~CCIE;
// Clear stopwatch run flag
sStopwatch.state = STOPWATCH_STOP;
// Clear stopwatch icon
display_symbol(LCD_ICON_STOPWATCH, SEG_OFF);
}
else // MODE_LAPTIMER
{
if(LAP_TimeFlag == LAP_RUNNING)
{
// Save LAP time
memcpy(LAP_Time, sStopwatch.time, sizeof(LAP_Time));
LAP_TimeFlag = LAP_CATCHED;
}
else // LAP_CATCHED
{
LAP_TimeFlag = LAP_RUNNING;
}
}
// Call draw routine immediately
display_stopwatch(LINE2, DISPLAY_LINE_UPDATE_FULL);
}
/*
* Called by the main loop to increment stopwatch or process a pressed key
*/
int stopwatch_callback(int key) {
unsigned long currentTicker;
if(StopWatchStatus.running) {
currentTicker=getTicker();
StopWatch=currentTicker-FirstTicker;
TotalStopWatch=currentTicker-TotalFirstTicker;
StopWatchKeyticks=0;
} else if(StopWatchKeyticks >= STOPWATCH_APD_TICKS) {
KeyCallback=(int(*)(int)) NULL;
return K_HEARTBEAT;
}
if(key!=K_HEARTBEAT && key!=K_RELEASE) {
StopWatchKeyticks=0;
if(StopWatchStatus.select_memory_mode || StopWatchStatus.rcl_mode) {
process_select_memory_key(key);
} else {
process_stopwatch_key(key);
}
}
display_stopwatch();
if(RclMemory>=0 && RclMemoryRemanentDisplay++ > RCL_MEMORY_REMANENCE) {
StopWatchStatus.sigma_display_mode=0;
RclMemory=-1;
}
return K_HEARTBEAT;
}
// *************************************************************************************************
// @fn mx_stopwatch
// @brief Stopwatch set routine. Mx stops stopwatch and resets count.
// @param u8 line LINE2
// @return none
// *************************************************************************************************
void mx_stopwatch(u8 line)
{
// Stop stopwatch
stop_stopwatch();
// Reset stopwatch count
reset_stopwatch();
// Display "00:00:00"
display_stopwatch(line, DISPLAY_LINE_UPDATE_FULL);
}
// *************************************************************************************************
// @fn Timer0_A4_Delay
// @brief Wait for some microseconds
// @param ticks (1 tick = 1/32768 sec)
// @return none
// *************************************************************************************************
void Timer0_A4_Delay(u16 ticks)
{
u16 value = 0;
// Exit immediately if Timer0 not running - otherwise we'll get stuck here
if ((TA0CTL & (BIT4 | BIT5)) == 0)
return;
// Disable timer interrupt
TA0CCTL4 &= ~CCIE;
// Clear delay_over flag
sys.flag.delay_over = 0;
// Add delay to current timer value
// To make sure this value is correctly read
while (value != TA0R)
value = TA0R;
value += ticks;
// Update CCR
TA0CCR4 = value;
// Reset IRQ flag
TA0CCTL4 &= ~CCIFG;
// Enable timer interrupt
TA0CCTL4 |= CCIE;
// Wait for timer IRQ
while (1)
{
// Delay in LPM
to_lpm(); // will also set GIE again
#ifdef USE_WATCHDOG
// Service watchdog
WDTCTL = WDTPW + WDTIS__512K + WDTSSEL__ACLK + WDTCNTCL;
#endif
// Redraw stopwatch display
if (is_stopwatch())
display_stopwatch(LINE2, DISPLAY_LINE_UPDATE_PARTIAL);
// Check stop condition
// disable interrupt to prevent flag's change caused by interrupt methods
__disable_interrupt();
if (sys.flag.delay_over)
break;
}
__enable_interrupt();
}
// *************************************************************************************************
// @fn stop_stopwatch
// @brief Stops stopwatch timer interrupt and sets stopwatch state to off.
// Does not reset stopwatch count.
// @param none
// @return none
// *************************************************************************************************
void stop_stopwatch(void)
{
// Clear timer interrupt enable
TA0CCTL2 &= ~CCIE;
// Clear stopwatch run flag
sStopwatch.state = STOPWATCH_STOP;
// Clear stopwatch icon
display_symbol(LCD_ICON_STOPWATCH, SEG_OFF);
// Call draw routine immediately
display_stopwatch(LINE2, DISPLAY_LINE_UPDATE_FULL);
}
// *************************************************************************************************
// @fn mx_stopwatch
// @brief Stopwatch set routine. Mx stops stopwatch and resets count.
// @param u8 line LINE2
// @return none
// *************************************************************************************************
void mx_stopwatch(u8 line)
{
// Stop stopwatch
stop_stopwatch();
// Reset stopwatch count
init_stopwatch();
LAP_TimeFlag = LAP_CATCHED;
// Set mode
set_stopwatchmode();
// Display "00:00:00"
display_stopwatch(line, DISPLAY_LINE_UPDATE_FULL);
}
// *************************************************************************************************
// @fn Timer0_A4_Delay
// @brief Wait for some microseconds
// @param ticks (1 tick = 1/32768 sec)
// @return none
// *************************************************************************************************
void Timer0_A4_Delay(u16 ticks)
{
u16 value;
// Exit immediately if Timer0 not running - otherwise we'll get stuck here
if ((TA0CTL & (BIT4 | BIT5)) == 0) return;
// Disable timer interrupt
TA0CCTL4 &= ~CCIE;
// Clear delay_over flag
sys.flag.delay_over = 0;
// Add delay to current timer value
value = TA0R + ticks;
// Update CCR
TA0CCR4 = value;
// Reset IRQ flag
TA0CCTL4 &= ~CCIFG;
// Enable timer interrupt
TA0CCTL4 |= CCIE;
// Wait for timer IRQ
while (1)
{
// Delay in LPM
to_lpm();
#ifdef USE_WATCHDOG
// Service watchdog
WDTCTL = WDTPW + WDTIS__512K + WDTSSEL__ACLK + WDTCNTCL;
#endif
// Redraw stopwatch display
if (is_stopwatch()) display_stopwatch(LINE2, DISPLAY_LINE_UPDATE_PARTIAL);
// Redraw countdown display
if (is_countdown_active()) display_countdown(LINE1, DISPLAY_LINE_UPDATE_PARTIAL);
// Redraw countup display
if (is_countup_active()) display_countup(LINE2, DISPLAY_LINE_UPDATE_PARTIAL);
// Check stop condition
if (sys.flag.delay_over) break;
}
}
// *************************************************************************************************
// @fn stopwatch_tick
// @brief Called by 1/100Hz interrupt handler.
// Increases stopwatch counter and triggers display update.
// @param none
// @return none
// *************************************************************************************************
void stopwatch_tick(void)
{
static u8 delay = 0;
// Default view (< 20 minutes): display and count MM:SS:hh
if (sStopwatch.viewStyle == DISPLAY_DEFAULT_VIEW)
{
// Add 1/100 sec
sStopwatch.time[7]++;
// Draw flag minimizes display update activity
//
// swt.drawFlag = 1: second L
// swt.drawFlag = 2: second H/L
// swt.drawFlag = 3: minutes L, second H/L
// swt.drawFlag = 4: minutes H/L, second H/L
// swt.drawFlag = 5: hours L, minutes H/L, second H/L
// swt.drawFlag = 6: hours H/L, minutes H/L, second H/L
// swt.drawFlag = 7: 1/10 sec, 1/100 sec
// swt.drawFlag = 8: 1/100 sec (every 17/100 sec to reduce display draw activity)
if (delay++ > 17)
{
sStopwatch.drawFlag = 8;
delay = 0;
}
// Add 1/10 sec
if (sStopwatch.time[7] == 0x3A)
{
sStopwatch.time[7] = '0';
sStopwatch.time[6]++;
// 1/10Hz trigger
sStopwatch.swtIs10Hz = 1;
// Update draw flag
sStopwatch.drawFlag = 7;
}
}
else // Alternative view (20 minutes .. 20 hours): display and count
// HH:MM:SS
{
// Just add 1 second
sStopwatch.time[6] = 0x3A;
}
// Second overflow?
if (sStopwatch.time[6] == 0x3A)
{
// Reset draw flag
sStopwatch.drawFlag = 1;
// 1Hz trigger
sStopwatch.swtIs1Hz = 1;
// Add data
sStopwatch.time[6] = '0';
sStopwatch.time[5]++; // second L (0 - 9)
if (sStopwatch.time[5] == 0x3A)
{
sStopwatch.drawFlag++; // 2
sStopwatch.time[5] = '0';
sStopwatch.time[4]++; // second H (0 - 5)
if (sStopwatch.time[4] == '6')
{
sStopwatch.drawFlag++; // 3
sStopwatch.time[4] = '0';
sStopwatch.time[3]++; // minutes L (0 - 9)
if (sStopwatch.time[3] == 0x3A)
{
sStopwatch.drawFlag++; // 4
sStopwatch.time[3] = '0';
sStopwatch.time[2]++; // minutes H (0 - 5)
if (sStopwatch.time[2] == '2')
{
// SWT display changes from MM:SS:hh to HH:MM:SS when reaching 20 minutes
sStopwatch.viewStyle = DISPLAY_ALTERNATIVE_VIEW;
display_stopwatch(LINE2, DISPLAY_LINE_UPDATE_FULL);
}
else if (sStopwatch.time[2] == '6')
{
sStopwatch.drawFlag++; // 5
sStopwatch.time[2] = '0';
sStopwatch.time[1]++; // hours L (0-9)
if (sStopwatch.time[1] == 0x3A)
{
sStopwatch.drawFlag++; // 6
sStopwatch.time[1] = '0';
sStopwatch.time[0]++; // hours H (0-1)
if (sStopwatch.time[0] == '2')
{
// When reaching 20 hours, start over
reset_stopwatch();
sStopwatch.state = STOPWATCH_RUN;
display_stopwatch(LINE2, DISPLAY_LINE_UPDATE_FULL);
}
}
}
}
}
}
}
// Always set display update flag
display.flag.update_stopwatch = 1;
}