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Line 48... |
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/* Global variable for the current time */
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/* Global variable for the current time */
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time_t* current_time_g;
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time_t* current_time_g;
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time_t* init_timer()
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/* Create a timer object */
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time_t* new_timer()
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{
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{
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time_t* timer;
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time_t* timer;
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timer= malloc(sizeof(time_t));
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timer= malloc(sizeof(time_t));
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timer->milliseconds = 0;
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timer->milliseconds = 0;
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timer->seconds = 0;
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timer->seconds = 0;
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| Line 63... |
Line 64... |
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/*Initialize a global variable that keeps
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/*Initialize a global variable that keeps
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track of the current up time. Timers are
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track of the current up time. Timers are
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compared against this running value.
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compared against this running value.
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*/
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*/
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void init_current_time()
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void init_timer()
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{
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{
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/* Initialize the current time object */
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current_time_g = new_timer();
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/* Configure timer 0 */
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/* Configure timer 0 */
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/* Counts down from this value and generates an interrupt every 1/100 seconds */
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/* Counts down from this value and generates an interrupt every 1/100 seconds */
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*(unsigned int *) ( ADR_AMBER_TM_TIMER0_LOAD ) = 1562; // 16-bit, x 256
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*(unsigned int *) ( ADR_AMBER_TM_TIMER0_LOAD ) = 1562; // 16-bit, x 256
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*(unsigned int *) ( ADR_AMBER_TM_TIMER0_CTRL ) = 0xc8; // enable[7], periodic[6],
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*(unsigned int *) ( ADR_AMBER_TM_TIMER0_CTRL ) = 0xc8; // enable[7], periodic[6],
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/* Enable timer 0 interrupt */
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/* Enable timer 0 interrupt */
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*(unsigned int *) ( ADR_AMBER_IC_IRQ0_ENABLESET ) = 0x020;
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*(unsigned int *) ( ADR_AMBER_IC_IRQ0_ENABLESET ) = 0x020;
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}
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current_time_g = malloc(sizeof(time_t));
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current_time_g->milliseconds = 0;
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/* Set the timer to current time plus a number of milliseconds */
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current_time_g->seconds = 0;
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void set_timer (time_t* timer, int milliseconds)
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{
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int seconds = _div(milliseconds, 1000);
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int mseconds = milliseconds - seconds*1000; /* milliseconds % 1000 */
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if (current_time_g->milliseconds >= (1000 - mseconds)) {
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timer->seconds = current_time_g->seconds + 1;
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timer->milliseconds = current_time_g->milliseconds + mseconds - 1000;
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}
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else {
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timer->seconds = current_time_g->seconds;
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timer->milliseconds = current_time_g->milliseconds + mseconds;
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}
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}
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timer->seconds += seconds;
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}
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void timer_interrupt()
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void timer_interrupt()
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{
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{
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/* Clear timer 0 interrupt in timer */
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/* Clear timer 0 interrupt in timer */
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Line 136... |
else
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else
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return 0;
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return 0;
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}
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}
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/* Set the timer to current time plus 5 seconds */
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void set_timer (time_t* timer, int milliseconds)
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{
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int seconds = _div(milliseconds, 1000);
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int mseconds = milliseconds - seconds*1000; /* milliseconds % 1000 */
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if (current_time_g->milliseconds >= (1000 - mseconds)) {
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timer->seconds = current_time_g->seconds + 1;
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timer->milliseconds = current_time_g->milliseconds + mseconds - 1000;
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}
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else {
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timer->seconds = current_time_g->seconds;
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timer->milliseconds = current_time_g->milliseconds + mseconds;
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}
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timer->seconds += seconds;
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}
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No newline at end of file
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No newline at end of file
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