Revision 0:2144396e0e9b, committed 2014-03-17

Comitter:

tim008

Date:

Mon Mar 17 10:50:49 2014 +0000

Commit message:

PAI_grupa2_tim008_lab3

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Mar 17 10:50:49 2014 +0000
@@ -0,0 +1,80 @@
+#include "mbed.h"
+
+#include <cmath>
+
+#define EYE_WAIT_TIME 10 // microseconds
+#define DEBOUNCE_TIME 100
+
+#define HIGH 1 // xD
+#define LOW 0
+
+int counter = 0;
+
+BusOut segments(dp2, dp1, dp28, dp6, dp5, dp27, dp26);
+BusOut digit(dp23, dp24, dp25);
+DigitalOut decimal_point(dp4);
+
+BusIn columns(dp9,dp10,dp11,dp13);
+BusOut rows(dp16, dp15, dp17, dp18);
+
+int digit_buffer[3] = {1, 2, 3};
+unsigned int predefined_segments[19] = {0x01, 0x4f, 0x12, 0x06, 0x4c, 
+                                0x24, 0x20, 0x0f, 0x00, 0x04,
+                                0x08,0x60,0x31,0x42,0x30,0x38,
+                                ~(0x01), 0x36, ~0};
+                            
+int pressed_button() {
+    
+    if(counter > 5) {
+        counter = 0;    
+    } else {
+        counter++;
+        return -1;  
+    }
+    
+    int lookup[] = {1, 2, 3, 10, 4, 5, 6, 11, 
+                    7, 8, 9, 12, 16, 0, 17, 13};
+
+    for(int i = 0; i <= 3; i++) {
+        rows = (1 << i); // probe a row 
+        for(int j = 0; j <= 3; j++)
+            if(columns == (1 << j))
+                return lookup[ i * 4 + j ];
+    }
+
+    return -1;
+}
+
+void display_digit_buffer() {
+    if(digit_buffer[2] == 12) {
+        digit_buffer[0] = 18;
+        digit_buffer[1] = 18;
+        digit_buffer[2] = 18;
+    }
+    for(int i = 1; i <= 4; i = i * 2) { // ne moze *=
+        digit = ~i;
+        segments = predefined_segments[ digit_buffer[i / 2] ];
+        decimal_point = 1;
+        wait_ms(EYE_WAIT_TIME);
+    }
+}
+
+void buffer(int button) {
+    if(button == -1) return;
+    
+    for(int i = 0; i <= 1; i++)
+        digit_buffer[i] = digit_buffer[i + 1];
+    
+    digit_buffer[2] = button;
+}
+
+int main() {
+    
+    while(true) {
+        buffer(pressed_button());
+        display_digit_buffer();
+        //wait_ms(50);
+    }
+
+    return 0;
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Mon Mar 17 10:50:49 2014 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/8e73be2a2ac1
\ No newline at end of file