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feat(lab03): modify frequency of the led with the buttons

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Co-authored-by: Klagarge <remi@heredero.ch>
This commit is contained in:
fastium
2026-04-25 12:14:14 +02:00
parent 1189c3374d
commit e036e18057
1 changed files with 14 additions and 9 deletions
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23
src/03-led-controller/main.c
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@@ -46,6 +46,8 @@ const char* BTN[NBR_BTN] = {BTN1, BTN2, BTN3};
void* btn_thread(void* arg) { void* btn_thread(void* arg) {
ThreadData* data = (ThreadData*)arg;
// Open all button with the right flags // Open all button with the right flags
int btn[NBR_BTN] = {0}; int btn[NBR_BTN] = {0};
for(int i=0; i<NBR_BTN; i++) { for(int i=0; i<NBR_BTN; i++) {
@@ -100,17 +102,23 @@ void* btn_thread(void* arg) {
if (events[i].data.fd == btn[0]) { if (events[i].data.fd == btn[0]) {
if (buf[0] == '1') { if (buf[0] == '1') {
printf("Decrease led frequency\n"); data->flash_period_ms += 200;
printf("Decrease led frequency to %ld ms\n", data->flash_period_ms);
} }
} else if (events[i].data.fd == btn[1]) { } else if (events[i].data.fd == btn[1]) {
if (buf[0] == '1') { if (buf[0] == '1') {
printf("Reset led frequency\n"); data->flash_period_ms = DEFAULT_TIME_MS;
printf("Reset led frequency: %ld ms\n", data->flash_period_ms);
} }
} else if (events[i].data.fd == btn[2]) { } else if (events[i].data.fd == btn[2]) {
if (buf[0] == '1') { if (buf[0] == '1') {
printf("Increase led frequency\n"); data->flash_period_ms -= 200;
if (data->flash_period_ms <= 0) {
data->flash_period_ms = 200; // Minimum period of 200ms
}
printf("Increase led frequency to %ld ms\n", data->flash_period_ms);
} }
} }
} }
@@ -129,13 +137,10 @@ static void* timer_thread(void* arg) {
led_off(led); led_off(led);
long time_on_ms = data->flash_period_ms / 100 * DUTY_CYCLE_PERCENT; // 2% duty
long time_off_ms = data->flash_period_ms - time_on_ms; // rest of the period
struct epoll_event ev; struct epoll_event ev;
int isLedOn = 0; int isLedOn = 0;
int k = 0;
while(1) { while(1) {
int n = epoll_wait(data->epoll_fd, &ev, 1, -1); int n = epoll_wait(data->epoll_fd, &ev, 1, -1);
@@ -150,12 +155,13 @@ static void* timer_thread(void* arg) {
break; break;
} }
long time_on_ms = data->flash_period_ms / 100 * DUTY_CYCLE_PERCENT; // 2% duty
long time_off_ms = data->flash_period_ms - time_on_ms; // rest of the period
int delay = 0; int delay = 0;
if (isLedOn == 0) { if (isLedOn == 0) {
delay = time_on_ms; // 2% duty delay = time_on_ms; // 2% duty
led_on(led); led_on(led);
printf("ping %d\n", k++);
isLedOn = 1; isLedOn = 1;
} else { } else {
delay = time_off_ms; // rest of the period delay = time_off_ms; // rest of the period
@@ -196,10 +202,9 @@ int main(int argc, char* argv[])
} }
// Yann -------------------
// Setup button thread // Setup button thread
pthread_t btn_thread_inst; pthread_t btn_thread_inst;
pthread_create(&btn_thread_inst, NULL, btn_thread, NULL); pthread_create(&btn_thread_inst, NULL, btn_thread, &data);
// pthread_join(btn_thread_inst, NULL); // pthread_join(btn_thread_inst, NULL);