menu/main: wire up multi-button handling

src/main.c

@@ -11,6 +11,7 @@
 #include "ble.h"
 #include "cdc.h"
 #include "wang.h"
+#include "platform.h"
 
 int anim_render(uint16_t *fb, int index, int frame);
 
@@ -25,10 +26,7 @@ enum usb_control_resp bl_handler(enum usb_control_state state) {
 }
 
 
-int btn1_was_pressed = 1;
-int btn2_was_pressed = 0;
-int btn1_hold = 0;
-int btn2_hold = 0;
+int button_was_pressed[BUTTON_COUNT] = {0};
 
 int image_index = 0;
 
@@ -46,11 +44,11 @@ int main_handler(void) {
         return 1;
     }
 
-    if (button_pressed[0] && !btn1_was_pressed) {
+    if (button_pressed[0] && !button_was_pressed[0]) {
         display_brightness = (display_brightness + 1) % 16;
     }
 
-    if (button_pressed[1] && !btn2_was_pressed) {
+    if (button_pressed[1] && !button_was_pressed[1]) {
         if (flash_header_valid) {
             image_index++;
             if (!flash_header.widths[image_index]) image_index = 0;
@@ -75,8 +73,9 @@ int main_handler(void) {
         display_flip();
     }
 
-    btn2_was_pressed = button_pressed[1];
-    btn1_was_pressed = button_pressed[0];
+    for (int i = 0; i < BUTTON_COUNT; i++) {
+        button_was_pressed[i] = button_pressed[i];
+    }
 
     if (!flash_header_valid) return 1;
 
@@ -124,8 +123,9 @@ int main()
         if (cur_handler) {
             cur_handler = menu_handler();
             if (!cur_handler) {
-                btn2_was_pressed = button_pressed[1];
-                btn1_was_pressed = button_pressed[0];
+                for (int i = 0; i < BUTTON_COUNT; i++) {
+                    button_was_pressed[i] = button_pressed[i];
+                }
                 subframe = 99999;
             }
         } else

src/menu.c

@@ -55,8 +55,7 @@ static void render_xbm(unsigned char *bits, struct row_buf *b) {
 
 int menu_index = 0;
 
-static int btn0_pressed = 0;
-static int btn1_pressed = 0;
+static int was_button_pressed[BUTTON_COUNT] = {0};
 
 void menu_render(void) {
     char buffer[(48 * 11) / 8];
@@ -104,8 +103,9 @@ void menu_render(void) {
 }
 
 void menu_switch(void) {
-    btn0_pressed = button_pressed[0];
-    btn1_pressed = button_pressed[1];
+    for (int i = 0; i < BUTTON_COUNT; i++) {
+        was_button_pressed[i] = button_pressed[i];
+    }
     menu_index = flash_header_valid ? 0 : 1;
 
     menu_render();
@@ -123,14 +123,29 @@ int menu_handler(void) {
         btldr_timer = 0;
     }
 
-    if (button_pressed[0] && !btn0_pressed && !button_pressed[1]) {
+    if (button_pressed[0] && !was_button_pressed[0] && !button_pressed[1]) {
         menu_index = (menu_index + 1) % 3;
         if (!flash_header_valid && !menu_index) menu_index = 1;
         menu_render();
         render_ticks = 0;
     }
 
-    if (button_pressed[1] && !btn1_pressed && !button_pressed[0]) {
+    #if BUTTON_COUNT == 4
+    if (button_pressed[2] && !was_button_pressed[2]) {
+        menu_index = (menu_index + 2) % 3;
+        if (!flash_header_valid && !menu_index) menu_index = 2;
+        menu_render();
+        render_ticks = 0;
+    }
+    if (button_pressed[3] && !was_button_pressed[3]) {
+        menu_index = (menu_index + 1) % 3;
+        if (!flash_header_valid && !menu_index) menu_index = 1;
+        menu_render();
+        render_ticks = 0;
+    }
+    #endif
+
+    if (button_pressed[1] && !was_button_pressed[1] && !button_pressed[0]) {
         if (menu_index == 0) {
             return 0;
         } else if (menu_index == 1) {
@@ -147,8 +162,9 @@ int menu_handler(void) {
         menu_render();
     }
 
-    btn0_pressed = button_pressed[0];
-    btn1_pressed = button_pressed[1];
+    for (int i = 0; i < BUTTON_COUNT; i++) {
+        was_button_pressed[i] = button_pressed[i];
+    }
 
     return 1;
 }