István Cserny
A NUCLEO-F446RE kártyára beépített LED1 fényerejének (PWM kitöltés) vezérlése a soros porton küldött karakterekkel (1: 1 % , 5: 50%, 9: 99%)
Revision 0:a1fc2f6fd4ab, committed 2021-10-12
- Comitter:
- cspista
- Date:
- Tue Oct 12 17:16:36 2021 +0000
- Commit message:
- Final version
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
| mbed.bld | Show annotated file Show diff for this revision Revisions of this file |
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Tue Oct 12 17:16:36 2021 +0000
@@ -0,0 +1,27 @@
+#include "mbed.h"
+
+PwmOut myled(LED1); // PA_5, a beépített LED
+Serial pc(USBTX, USBRX); // tx, rx aoros terminál a PC-hez
+
+int main() {
+ pc.baud(115200); // Adatsebesség beállítása
+ myled.period_ms(20); // Periódus = 20 ms
+ myled.write(1.0); // LED kezdetben kikapcsolva
+
+ while(1) {
+ char c = pc.getc(); // Beolvasunk egy karaktert
+ if(c=='1') {
+ myled = 0.01f; // LED 1 % kitöltéssel
+ pc.printf("Duty cycle = 0.01\r\n");
+ }
+ else if(c=='5') { // LED 50 % kitöltéssel
+ myled = 0.5f;
+ pc.printf("Duty cycle = 0.5\r\n");
+ }
+ else if(c=='9') {
+ myled = 0.99f; //LED 99 % kitöltéssel
+ pc.printf("Duty cycle = 0.99\r\n");
+ }
+ wait(0.2);
+ }
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Tue Oct 12 17:16:36 2021 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400 \ No newline at end of file