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various delay modes

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This commit is contained in:
Caleb Denio
2026-05-10 16:03:36 -06:00
parent b75bba6c2a
commit 796f8ca625
3 changed files with 41 additions and 21 deletions
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README.md
+1
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@@ -0,0 +1 @@
# chess clock firmware
src/config.h
+6 -3
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@@ -1,7 +1,10 @@
#include <stdint.h> #include <stdint.h>
#define MODE_FISCHER 0
#define MODE_BRONSTEIN 1
#define OSCILLATOR_CALIBRATION 0x76 #define OSCILLATOR_CALIBRATION 0x76
// #define STARTING_TIME_MS (uint32_t)10*60*1000 // 10 min #define MAIN_TIME (uint32_t)90*60*1000
// #define TIME_INCREMENT (uint32_t)5*1000 // 5 sec #define TIME_INCREMENT (uint32_t)30*1000
#define STARTING_TIME_MS (uint32_t)60*1000 // 1 minute #define INCREMENT_MODE MODE_FISCHER
src/main.c
+34 -18
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@@ -21,8 +21,9 @@ typedef enum {
volatile state_type state = STOPPED; volatile state_type state = STOPPED;
volatile uint32_t player_a_timer = STARTING_TIME_MS; volatile uint32_t player_a_timer = MAIN_TIME;
volatile uint32_t player_b_timer = STARTING_TIME_MS; volatile uint32_t player_b_timer = MAIN_TIME;
volatile uint32_t move_started_at = MAIN_TIME;
ISR(TIM1_COMPA_vect) ISR(TIM1_COMPA_vect)
{ {
@@ -70,8 +71,8 @@ void render_timer(unsigned long ms, uint8_t display) {
} }
if (ms >= 60000) { if (ms >= 60000) {
uint8_t sec = (ms + (1000 - 1)) / 1000 % 60; uint8_t sec = ms / 1000 % 60;
uint8_t min = (ms + (1000 - 1)) / 1000 / 60; uint8_t min = ms / 1000 / 60;
digits[3] = sec % 10; digits[3] = sec % 10;
digits[2] = sec / 10; digits[2] = sec / 10;
@@ -83,8 +84,8 @@ void render_timer(unsigned long ms, uint8_t display) {
} }
} }
} else { } else {
uint8_t cs = (ms + 9) / 10 % 100; uint8_t cs = ms / 10 % 100;
uint8_t sec = (ms + 999) / 1000; uint8_t sec = ms / 1000;
digits[3] = cs % 10; digits[3] = cs % 10;
digits[2] = cs / 10; digits[2] = cs / 10;
if (sec != 0) { if (sec != 0) {
@@ -112,6 +113,27 @@ render:
} }
} }
uint32_t get_increment(uint32_t player_timer) {
if (state == STOPPED) {
return 0;
}
#ifdef TIME_INCREMENT
#if INCREMENT_MODE == MODE_FISCHER
return TIME_INCREMENT;
#elif INCREMENT_MODE == MODE_BRONSTEIN
uint32_t difference = move_started_at - player_timer;
if(difference < TIME_INCREMENT) {
return difference;
} else {
return TIME_INCREMENT;
}
#endif
#else
return 0;
#endif
}
int main() { int main() {
cli(); cli();
setupio(); setupio();
@@ -119,8 +141,8 @@ int main() {
setup_clock(); setup_clock();
sei(); sei();
render_timer(STARTING_TIME_MS, DISPLAY_LEFT); render_timer(MAIN_TIME, DISPLAY_LEFT);
render_timer(STARTING_TIME_MS, DISPLAY_RIGHT); render_timer(MAIN_TIME, DISPLAY_RIGHT);
as1115_send_command(DECODE_MODE_REG, 0xFF); // decode as1115_send_command(DECODE_MODE_REG, 0xFF); // decode
as1115_send_command(SCAN_LIMIT_REG, 0x07); // enable all digits as1115_send_command(SCAN_LIMIT_REG, 0x07); // enable all digits
@@ -133,21 +155,15 @@ int main() {
cli(); cli();
if(button_pressed(PLAYER_A_BUTTON) && state != PLAYER_B && player_b_timer != 0 && player_a_timer != 0) { if(button_pressed(PLAYER_A_BUTTON) && state != PLAYER_B && player_b_timer != 0 && player_a_timer != 0) {
#ifdef TIME_INCREMENT player_a_timer += get_increment(player_a_timer);
if(state != STOPPED) {
player_a_timer += TIME_INCREMENT;
}
#endif
state = PLAYER_B; state = PLAYER_B;
move_started_at = player_b_timer;
} }
if(button_pressed(PLAYER_B_BUTTON) && state != PLAYER_A && player_b_timer != 0 && player_a_timer != 0) { if(button_pressed(PLAYER_B_BUTTON) && state != PLAYER_A && player_b_timer != 0 && player_a_timer != 0) {
#ifdef TIME_INCREMENT player_b_timer += get_increment(player_b_timer);
if(state != STOPPED) {
player_b_timer += TIME_INCREMENT;
}
#endif
state = PLAYER_A; state = PLAYER_A;
move_started_at = player_a_timer;
} }
sei(); sei();
} }