add menu

code/inc/menu.h

@@ -0,0 +1,16 @@
+#include <stdint.h>
+
+extern int8_t menu_val_timezone;
+extern uint8_t menu_val_format;
+
+typedef enum {
+    OFF,
+    TIMEZONE,
+    FORMAT,
+    EXIT
+} menu_state_t;
+
+void enter_menu(void);
+const char* get_menu_text(void);
+uint8_t get_menu_active(void);
+void menu_up_down(uint8_t up_down);

code/src/main.c

@@ -7,6 +7,7 @@
 #include "uart.h"
 #include "i2cmaster.h"
 #include "DS3231.h"
+#include "menu.h"
 
 #define RX_INPUT_BUFFER_SIZE 92
 
@@ -27,6 +28,48 @@ const unsigned char number_Font[10]  = {
     0b11111110, //8
     0b01111110  //9
 };
+const unsigned char character_Font[26] = {
+    0b10111110, //A
+    0b11110100, //b
+    0b11100000, //c
+    0b11100110, //d
+    0b11111000, //e
+    0b10111000, //F
+    0b11011100, //G
+    0b10110100, //h
+    0b00000100, //i
+    0b01000110, //J
+    0b10111100, //K
+    0b11010000, //L
+    0b10011110, //M
+    0b10100100, //n
+    0b11100100, //o
+    0b10111010, //P
+    0b00111110, //q
+    0b10100000, //r
+    0b01111100, //S
+    0b11110000, //t
+    0b11000100, //u
+    0b11000100, //v
+    0b11010110, //W
+    0b10110110, //X
+    0b01110110, //Y
+    0b11101010 //Z
+};
+const unsigned char character_minus = 0b00100000; //zeigt '-' an
+
+void string_to_buffer(const char input_string[6]){
+    for(uint8_t i=0; i < 6; i++){
+        if(input_string[i] >= 0x41 && input_string[i] <= 0x5A)
+            SR_Buffer[i] = character_Font[input_string[i] - 0x41];
+        else if(input_string[i] >= 0x30 && input_string[i] <= 0x39)
+            SR_Buffer[i] = number_Font[input_string[i] - 0x30];
+        else if(input_string[i] == 0x2D) 
+            SR_Buffer[i] = character_minus;
+        else
+            SR_Buffer[i] = 0;
+    }
+}
 
 void clear_SR_Buffer(void) {
     for (uint8_t i = 0; i < 6; i++) {
@@ -70,10 +113,17 @@ int8_t parse_nmea_gps(char input_string[RX_INPUT_BUFFER_SIZE], uint8_t output_bu
 
 int main(void){
     setup();
+    printf("Moin\n\r");
 
     while(1){
         check_dip_switches();
 
+        if(get_menu_active()){
+            PORTC &= ~DOT; // blink dots
+            string_to_buffer(get_menu_text());
+            _delay_ms(10);
+        }
+        else{
             uint8_t clock[3];
             cli();
             DS3231_read(clock);
@@ -83,9 +133,10 @@ int main(void){
                 SR_Buffer[5-(2*i)-1] = number_Font[(clock[i] & 0xF0)>>4];
             }
             PORTC = (PORTC & (~DOT)) | (clock[0]%2) << 4; // blink dots
-        print_SR_Buffer();
             _delay_ms(100);
         }
+        print_SR_Buffer();
+    }
 }
 
 void check_dip_switches() {
@@ -176,17 +227,22 @@ void setup(){
 //Encoder rotate
 ISR(INT0_vect) {
     if (PIND & ENCODER_B) {
-        printf("step-\n\r");
-        OCR2A--;
-    } else {
+        if(get_menu_active())
+            menu_up_down(1);
+        else
             OCR2A++;
-        printf("step+\n\r");
+    } else {
+        if(get_menu_active())
+            menu_up_down(-1);
+        else
+            OCR2A--;
     }
 }
 
 //Encoder Button
 ISR(INT1_vect) {
     printf("button\n\r");
+    enter_menu();
 }
 
 ISR(USART0_RX_vect)

code/src/menu.c

@@ -0,0 +1,113 @@
+#include "menu.h"
+#include <stdlib.h>
+#include <string.h>
+
+menu_state_t state = OFF;
+uint8_t selected = 0;
+
+int8_t menu_val_timezone = -1;
+uint8_t menu_val_format = 24;
+
+//void debug_menu(){
+//    printf("state:    %d\r\n", state);
+//    printf("selected: %d\r\n", selected);
+//    printf("timezone: %d\r\n", menu_val_timezone);
+//    printf("\r\n");
+//}
+
+uint8_t get_menu_active(){
+    if(state != OFF)
+        return 1;
+    return 0;
+}
+
+const char *text[] = {
+    "test  ",
+    "  test"
+};
+
+void enter_menu(){
+    switch(state){
+        case OFF:
+            state = 1;
+            break;
+        case EXIT:
+            state = OFF;
+            break;
+        default:
+            selected ^= 1;
+            break;
+    }
+    //debug_menu();
+}
+
+const char* get_menu_text(){
+    char *res = "      ";
+
+    memset(res, ' ', 6);
+    if(selected)
+        switch(state){
+            case TIMEZONE:
+                res = "      ";
+                if(menu_val_timezone < 0)
+                    res[3] = '-';
+                else
+                    res[3] = ' ';
+                res[4] = abs(menu_val_timezone / 10)+0x30;
+                res[5] = abs(menu_val_timezone % 10)+0x30;
+                break;
+            case FORMAT:
+                res[2] = (menu_val_format / 10) + 0x30;
+                res[3] = (menu_val_format % 10) + 0x30;
+                res[4] = 'H';
+                break;
+            default:
+                res = "ERROR";
+                break;
+        } 
+    else
+        switch(state){
+            case TIMEZONE:
+                res = "ZONE  ";
+                break;
+            case FORMAT:
+                res = "FORMAT";
+                break;
+            case EXIT:
+                res = "ZURUEK";
+                break;
+            default:
+                res = "ERROR";
+                break;
+        } 
+    return res;
+}
+
+void menu_up_down(uint8_t up_down){
+    if(selected)
+        switch(state){
+            case TIMEZONE:
+                menu_val_timezone += up_down;
+                if(menu_val_timezone < -12)
+                    menu_val_timezone = 12;
+                if(menu_val_timezone > 12)
+                    menu_val_timezone = -12;
+                break;
+            case FORMAT:
+                if(menu_val_format == 12)
+                    menu_val_format = 24;
+                else if(menu_val_format == 24)
+                    menu_val_format = 12;
+                break;
+            default:
+                break;
+        } 
+    else{
+        state += up_down;
+        if(state < 1)
+            state = EXIT;
+        if(state > 3)
+            state = TIMEZONE;
+    }
+    //debug_menu();
+}