void app_cpu_load_init(void)
{
/* Reset counters */
app_cpu_load_time_active = 0;
app_cpu_load_time_sleep = 0;
/* Start Timer counter used to monitor CPU timing */
tc45_enable(&TCC4);
tc45_write_clock_source(&TCC4, TC45_CLKSEL_DIV256_gc); /* 24MHz / 256 */
tc45_set_direction(&TCC4, TC45_UP);
/* Display static background */
gfx_mono_draw_string(DISPLAY_CPU_LOAD_TEXT,
DISPLAY_CPU_LOAD_TEXT_POS_X,
DISPLAY_CPU_LOAD_TEXT_POS_Y,
&sysfont);
gfx_mono_draw_filled_rect(
DISPLAY_CPU_LOAD_PROBAR_START_POS_X,
DISPLAY_CPU_LOAD_PROBAR_START_POS_Y,
DISPLAY_CPU_LOAD_PROBAR_START_SIZE_X,
DISPLAY_CPU_LOAD_PROBAR_START_SIZE_Y,
GFX_PIXEL_SET);
gfx_mono_draw_filled_rect(
DISPLAY_CPU_LOAD_PROBAR_STOP_POS_X,
DISPLAY_CPU_LOAD_PROBAR_STOP_POS_Y,
DISPLAY_CPU_LOAD_PROBAR_STOP_SIZE_X,
DISPLAY_CPU_LOAD_PROBAR_STOP_SIZE_Y,
GFX_PIXEL_SET);
}
// setup the board instead of board_init() as recommended by ASF.. because christmas lights, that's why.
void init (void) {
static usart_serial_options_t usart_options = {
.baudrate = USART_SERIAL_BAUDRATE,
.charlength = USART_SERIAL_CHAR_LENGTH,
.paritytype = USART_SERIAL_PARITY,
.stopbits = USART_SERIAL_STOP_BIT
};
// initialize ASF stuff
board_init();
sysclk_init();
ioport_init();
pmic_init();
pmic_set_scheduling(PMIC_SCH_FIXED_PRIORITY);
// remap, enable TX, and configure USART on PORT C
PORTC.REMAP |= PR_USART0_bm;
PORTC.DIR |= (1 << PIN7_bp);
sysclk_enable_module(SYSCLK_PORT_C, PR_USART0_bm);
usart_init_rs232(USART_SERIAL, &usart_options);
// setup timer for PWM
tc45_enable(&TCC4);
tc45_set_overflow_interrupt_callback(&TCC4, pwm_callback);
tc45_set_wgm(&TCC4, TC45_WG_NORMAL);
tc45_write_period(&TCC4, 256);
tc45_set_overflow_interrupt_level(&TCC4, TC45_INT_LVL_MED);
// enable all channels and turn off (high)
ioport_set_port_dir(IOPORT_PORTA, PORTA_MASK, IOPORT_DIR_OUTPUT);
ioport_set_port_dir(IOPORT_PORTD, PORTD_MASK, IOPORT_DIR_OUTPUT);
ioport_set_port_dir(IOPORT_PORTR, PORTR_MASK, IOPORT_DIR_OUTPUT);
ioport_set_port_level(IOPORT_PORTA, PORTA_MASK, 0xFF);
ioport_set_port_level(IOPORT_PORTD, PORTD_MASK, 0xFF);
ioport_set_port_level(IOPORT_PORTR, PORTR_MASK, 0xFF);
for (uint8_t i=0; i<NUM_CHANNELS; i++) {
compare[i] = 0;
compbuff[i] = 0;
}
// enable status LEDs and turn off
ioport_set_pin_dir(LED_STATUS, IOPORT_DIR_OUTPUT);
ioport_set_pin_dir(LED_DATA, IOPORT_DIR_OUTPUT);
ioport_set_pin_level(LED_STATUS, 1);
ioport_set_pin_level(LED_DATA, 1);
// enable interrupts and start timer for PWM
cpu_irq_enable();
tc45_write_clock_source(&TCC4, TC45_CLKSEL_DIV2_gc);
}
/**
* \brief This function configure and start timer1,which is TC4
* - Enable timer-1
* - Configure as pulse-width capture event action with event channel 1
* as event selection
* - Configure clock source as system clock with prescalar 1 and start on
* next event
* - Enable capture channel A
*/
void rtccalib_config_start_timer_one(void)
{
/* Enable Timer-1 */
tc45_enable(&TIMER1_FOR_CALIB);
/* Configure event action as pulse-width capture with event channel 1
* as event selection */
tc45_set_input_capture(&TIMER1_FOR_CALIB, TC45_EVSEL_CH1_gc,
TC45_EVACT_PWF_gc);
/* Configure timer-1 clock source */
tc45_write_clock_source(&TIMER1_FOR_CALIB, TC45_CLKSEL_DIV1_gc);
/* Configure to start on next event */
tc45_set_evstart(&TIMER1_FOR_CALIB);
/* Enable capture channel A */
tc45_enable_cc_channels(&TIMER1_FOR_CALIB, TC45_CCACAPT);
}
