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led_clock-old
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use internal RTC with our tick speed

This commit is contained in:
King Kévin 2016-04-03 21:29:04 +02:00
parent 28f2c1fbe5
commit a07e287865
1 changed files with 17 additions and 5 deletions
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22
main.c
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@ -39,6 +39,7 @@
#include <libopencm3/stm32/exti.h> // external interrupt utilities
#include <libopencm3/stm32/timer.h> // timer utilities
#include <libopencm3/stm32/adc.h> // ADC utilities
#include <libopencm3/stm32/rtc.h> // real time clock utilities
/* own libraries */
#include "global.h" // board definitions
@ -368,6 +369,11 @@ int main(void)
nvic_enable_irq(BUTTON_IRQ); // enable interrupt
#endif
// setup RTC
rtc_auto_awake(RCC_LSE, 32768/TICKS_PER_SECOND-1); // ensure RTC is on, uses the 32.678 kHz LSE, and the prescale is set to our tick speed, else update backup registers accordingly
rtc_interrupt_enable(RTC_SEC); // enable RTC interrupt on "seconds"
nvic_enable_irq(NVIC_RTC_IRQ); // allow the RTC to interrupt
// generate gamma correction table (with fixed gamma value)
for (uint16_t i=0; i<LENGTH(gamma_correction_lut); i++) {
gamma_correction_lut[i] = powf((float)i / (float)LENGTH(gamma_correction_lut), 2.2)*LENGTH(gamma_correction_lut);
@ -465,19 +471,18 @@ int main(void)
time_flag = false; // reset flag
action = true; // action has been performed
if ((current_time%ticks_second)==0) { // one second passed
//printf("%02lu:%02lu:%02lu\n", current_time/ticks_hour, (current_time%ticks_hour)/ticks_minute, (current_time%ticks_minute)/ticks_second); // display time
led_toggle(); // LED activity to show we are not stuck
}
if ((current_time%ticks_minute)==0) { // one minute passed
//current_time = rtc_time[2]*ticks_hour+rtc_time[1]*ticks_minute+rtc_time[0]*ticks_second; // sync current time
printf("it is now %02lu:%02lu:%02lu\n", current_time/ticks_hour, (current_time%ticks_hour)/ticks_minute, (current_time%ticks_minute)/ticks_second); // display time
}
if ((current_time%ticks_hour)==0) { // one hours passed
clock_hours(); // show hour markers
}
if ((current_time%ticks_midday*2)==0) { // one day passed
current_time = 0; // reset time counter
}
clock_set_time(current_time); // set time
if ((current_time%ticks_second)==0) { // on second passed
//printf("%02lu:%02lu:%02lu\n", current_time/ticks_hour, (current_time%ticks_hour)/ticks_minute, (current_time%ticks_minute)/ticks_second); // display time
}
}
if (action) { // go to sleep if nothing had to be done, else recheck for activity
action = false;
@ -496,3 +501,10 @@ void BUTTON_ISR(void)
button_flag = true; // perform button action
}
#endif
void rtc_isr(void)
{
rtc_clear_flag(RTC_SEC); // clear flag
current_time++; // increment time
time_flag = true; // notify to show new time
}