Diff: main.cpp

Revision:

0:029b9e09961c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sat Nov 06 09:27:22 2021 +0000
@@ -0,0 +1,85 @@
+//librrary import section
+#include "mbed.h"
+
+//macro definition section
+#define REFRESH_RATE_MS 20
+#define BTN_DELAY_MS 40
+
+//global variable section
+DigitalIn btn_up(PC_8);
+DigitalIn btn_down(PC_9);
+
+DigitalOut A(PA_10);
+DigitalOut B(PA_9);
+DigitalOut C(PA_8);
+DigitalOut D(PB_10);
+DigitalOut E(PB_5);
+DigitalOut F(PB_4);
+DigitalOut G(PB_3);
+
+DigitalOut sel_1(PB_6);
+DigitalOut sel_2(PC_7);
+
+//arrays
+char hex_number[10] = {0xC0, 0xF9, 0xA4, 0xB0, 0x99, 0x92, 0x82, 0xF8, 0x80, 0x90};
+DigitalOut display[7] = {A, B, C, D, E, F, G};
+
+//function declaration section
+void hexToDisplay2(char hex){
+    sel_1.write(1);
+    sel_2.write(0);
+    
+    for(int i = 6; i >= 0; i--)
+        display[i] = (1<<i) & hex;
+}
+
+void hexToDisplay1(char hex){    
+    sel_1.write(0);
+    sel_2.write(1);
+    
+    for(int i = 6; i >= 0; i--)
+        display[i] = (1<<i) & hex;
+}
+
+void clearDisplay(){
+    sel_1.write(1);
+    sel_2.write(1);    
+}
+
+void currNumToDisplay(char num){
+    char dec = num / 10;
+    char dig = num % 10;
+    
+    if(dec){
+        hexToDisplay1(hex_number[dec]);
+        wait_ms(REFRESH_RATE_MS);
+        
+        hexToDisplay2(hex_number[dig]);
+        wait_ms(REFRESH_RATE_MS);
+    } else {
+        hexToDisplay2(hex_number[dig]);
+        wait_ms(REFRESH_RATE_MS);
+    }
+    
+    clearDisplay();
+}
+
+//main function
+int main(){
+    char current_number = 0;
+
+    while(true){
+        currNumToDisplay(current_number);
+        
+        if(!btn_up){
+            if(current_number == 0) current_number = 15;
+            else    current_number = (current_number - 1) % 16;    
+        }
+        
+        
+        if(!btn_down) current_number = (current_number + 1) % 16;
+        //wait_ms(BTN_DELAY_MS);
+    }
+}
+
+//function definition section
\ No newline at end of file