/**
* \brief The call back function for CCA interrupt
* - This function sets phase0 and clears phase90
* - If round passed, sets index signal also
*/
void generator_qenc_timer_ccaint_handler(void)
{
/* Static variable to store pulse count */
static uint16_t pulse_count = 0;
static uint8_t quadrature_steps[4] = {
0,
QENC_PH90_PIN,
QENC_PH0_PIN | QENC_PH90_PIN,
QENC_PH0_PIN,
};
tc_clear_overflow(generator_qenc_timer);
/* Increment pulse count */
if (generator_qenc_dir) {
pulse_count++;
if (pulse_count == generator_qenc_revolution) {
pulse_count = 0;
}
} else {
if (pulse_count == 0) {
pulse_count = generator_qenc_revolution - 1;
} else {
pulse_count--;
}
}
generator_qenc_port->OUT
= (generator_qenc_port->OUT & ~(QENC_PH0_PH90_INDEX_PINS
<< generator_qenc_pins_base))
| (quadrature_steps[pulse_count % 4]
<< generator_qenc_pins_base)
| ((pulse_count == 0) ?
(QENC_INDEX_PIN << generator_qenc_pins_base) : 0);
}
void app_cpu_load_task(void)
{
static uint8_t bar_pos_last = 0;
uint8_t bar_pos;
/* Wait a total time > 250ms to update display each 250ms */
if ((app_cpu_load_time_actif + app_cpu_load_time_sleep)
< ((24000lu / 256lu) * 250)) {
return;
}
/* Compute CPU load */
if (tc_is_overflow(&TCC1)) {
tc_clear_overflow(&TCC1);
bar_pos = DISPLAY_CPU_LOAD_PROBAR_MAX_SIZE_X;
} else {
bar_pos = (app_cpu_load_time_actif *
DISPLAY_CPU_LOAD_PROBAR_MAX_SIZE_X)
/ (app_cpu_load_time_actif +
app_cpu_load_time_sleep);
}
/* Update progress bar */
if (bar_pos_last < bar_pos) {
gfx_mono_draw_filled_rect(
DISPLAY_CPU_LOAD_PROBAR_POS_X + bar_pos_last,
DISPLAY_CPU_LOAD_PROBAR_POS_Y,
bar_pos - bar_pos_last,
DISPLAY_CPU_LOAD_PROBAR_SIZE_Y,
GFX_PIXEL_SET);
} else if (bar_pos_last > bar_pos) {
gfx_mono_draw_filled_rect(
DISPLAY_CPU_LOAD_PROBAR_POS_X + bar_pos,
DISPLAY_CPU_LOAD_PROBAR_POS_Y,
bar_pos_last - bar_pos,
DISPLAY_CPU_LOAD_PROBAR_SIZE_Y,
GFX_PIXEL_CLR);
}
bar_pos_last = bar_pos;
/* Reset counters */
app_cpu_load_time_actif = 0;
app_cpu_load_time_sleep = 0;
}
/*! \brief to disable overflow interrupt
*/
void tmr_disable_ovf_interrupt(void)
{
tc_set_overflow_interrupt_level(TIMER, TC_INT_LVL_OFF);
tc_clear_overflow(TIMER);
}
