7ABELI
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STM Schalter
STM SCHALTER¶
mit Kundegraber¶
Das Zustandsdiagramm (Statechart Diagram) sieht folgendermaßen aus:
STM SCHALTER
#include "mbed.h" #include "C12832.h" DigitalOut Led1(LED1); DigitalOut Led2(LED2); DigitalOut Led3(LED3); DigitalOut Led4(LED4); InterruptIn SW1(p14); InterruptIn SW2(p15); InterruptIn SW3(p12); InterruptIn SW4(p16); C12832 lcd(p5, p7, p6, p8, p11); enum State {ST_AUS=0, ST_EIN}; State state; bool pressed = false; void rise(void) { wait_ms(100); pressed = true; } bool CheckFlag() { if (pressed) { pressed=false; return true; } return false; } void ST_Aus (void) { //Status auf LCD lcd.cls(); // clear screen lcd.locate(0,0); // x-position, y-position (x: 0-128; y: 0-32) lcd.printf("State: 1 (Aus)"); // entry // do while(true) { Led1 = 0; if(CheckFlag()) { state = ST_EIN; // exit return; } } } void ST_Ein (void) { //Status auf LCD lcd.cls(); // clear screen lcd.locate(0,0); // x-position, y-position (x: 0-128; y: 0-32) lcd.printf("State: 2 (Ein)"); // entry Led4 = 1; wait_ms(200); Led4 = 0; wait_ms(200); Led4 = 1; wait_ms(200); Led4 = 0; wait_ms(200); // do while(true) { Led1 = 1; if(CheckFlag()) { state = ST_AUS; // exit return; } } } void ST_Error (void) { //Status auf LCD lcd.cls(); // clear screen lcd.locate(0,0); // x-position, y-position (x: 0-128; y: 0-32) lcd.printf("State: ERROR"); return; } void stateMachine() { switch (state) { case ST_AUS: ST_Aus(); break; case ST_EIN: ST_Ein(); break; default: ST_Error(); // sollte nicht auftreten :-) break; } } int main() { SW1.rise(&rise); //.fall(&fall); //rise beim drücken, fall beim loslasen state = ST_AUS; while(true){ stateMachine(); } }