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menu_thing.ino
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menu_thing.ino
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#include <U8g2lib.h>
#include "Memory.h"
#define ROT_BTN 2
#define ROT_CLK 3
#define ROT_DAT 4
#define MENU_SCR -1
#define SEL_MENU_ITEM_MEM_ADDR 1
#define OUT_0 6
#define OUT_1 7
#define OUT_2 8
#define OUT_0_MEM_ADDR 10
#define OUT_1_MEM_ADDR 11
#define OUT_2_MEM_ADDR 12
// 'item_sel_background', 128x21px
const unsigned char bitmap_item_sel_background[] PROGMEM = {
0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x01,
0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02,
0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04,
0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0c,
0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0c,
0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0c,
0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0c,
0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0c,
0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0c,
0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0c,
0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0c,
0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0c,
0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0c,
0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0c,
0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0c,
0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0c,
0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0c,
0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0c,
0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06,
0xf8, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x03,
0xf0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x01
};
// 'scroll_bar', 8x64px
const unsigned char bitmap_scroll_bar[] PROGMEM = {
0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40,
0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40,
0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40,
0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x40, 0x00, 0x00
};
// 'icon_next', 16x16px
const unsigned char bitmap_icon_next[] PROGMEM = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0c, 0x30, 0x14, 0x28, 0x24, 0x24, 0x48, 0x12,
0x90, 0x09, 0x20, 0x04, 0x40, 0x02, 0x80, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
// 'icon_prev', 16x16px
const unsigned char bitmap_icon_prev[] PROGMEM = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x01, 0x40, 0x02, 0x20, 0x04, 0x90, 0x09,
0x48, 0x12, 0x24, 0x24, 0x14, 0x28, 0x0c, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
// 'icon_selected', 16x16px
const unsigned char bitmap_icon_selected[] PROGMEM = {
0x00, 0x00, 0x00, 0x00, 0xe0, 0x07, 0x10, 0x08, 0xc8, 0x13, 0x24, 0x24, 0x94, 0x29, 0x54, 0x2a,
0x54, 0x2a, 0x94, 0x29, 0x24, 0x24, 0xc8, 0x13, 0x10, 0x08, 0xe0, 0x07, 0x00, 0x00, 0x00, 0x00
};
const int NUM_ITEMS = 3;
// Array of all bitmap icons for convenience.
const unsigned char* item_icons[NUM_ITEMS] = {
bitmap_icon_selected,
bitmap_icon_selected,
bitmap_icon_selected
};
const char item_titles[NUM_ITEMS][11] = {
{ "Output #00" },
{ "Output #01" },
{ "Output #02" },
};
int item_sel_prev = 0;
int item_sel_curr = 1;
int item_sel_next = 2;
volatile int rot_val = item_sel_curr;
int last_rot_val = item_sel_curr;
volatile bool btn_pressed = false;
int scroll_handle_height = 64 / NUM_ITEMS;
int current_screen = MENU_SCR;
U8G2_SSD1306_128X64_NONAME_1_HW_I2C u8g2(U8G2_R0);
Memory memory;
void setup() {
Serial.begin(19200);
pinMode(ROT_CLK, INPUT_PULLUP); // TODO: No pull up on the rotary encoder?
pinMode(ROT_DAT, INPUT_PULLUP); // TODO: No pull up on the rotary encoder?
pinMode(ROT_BTN, INPUT_PULLUP);
attachInterrupt(digitalPinToInterrupt(ROT_CLK), rotaryInterruptHandler, LOW);
attachInterrupt(digitalPinToInterrupt(ROT_BTN), buttonInterruptHandler, LOW);
// Setup the outputs
pinMode(OUT_0, OUTPUT);
pinMode(OUT_1, OUTPUT);
pinMode(OUT_2, OUTPUT);
u8g2.setBitmapMode(1);
u8g2.begin();
u8g2.clearDisplay();
delay(1500);
Serial.println("----------");
Serial.println("Menu Thing");
Serial.println("----------");
}
void loop() {
digitalWrite(OUT_0, memory.read(OUT_0_MEM_ADDR));
digitalWrite(OUT_1, memory.read(OUT_1_MEM_ADDR));
digitalWrite(OUT_2, memory.read(OUT_2_MEM_ADDR));
switch (current_screen) {
case MENU_SCR:
drawMenu();
break;
default:
drawItem(current_screen);
break;
}
}
void drawMenu() {
if (btn_pressed) {
current_screen = item_sel_curr;
memory.update(SEL_MENU_ITEM_MEM_ADDR, item_sel_curr);
rot_val = memory.read(10 + item_sel_curr);
btn_pressed = false;
return;
}
if (rot_val != last_rot_val) {
item_sel_curr = rot_val;
if (item_sel_curr < 0) {
rot_val = item_sel_curr = NUM_ITEMS - 1;
}
if (item_sel_curr >= NUM_ITEMS) {
rot_val = item_sel_curr = 0;
}
item_sel_prev = item_sel_curr - 1;
if (item_sel_prev < 0) {
item_sel_prev = NUM_ITEMS - 1;
}
item_sel_next = item_sel_curr + 1;
if (item_sel_next >= NUM_ITEMS) {
item_sel_next = 0;
}
last_rot_val = rot_val;
}
int scroll_percentage = map(item_sel_curr, 0, NUM_ITEMS, 0, 100);
u8g2.firstPage();
do {
// Prev Item
u8g2.drawXBMP(4, 2, 16, 16, item_icons[item_sel_prev]);
u8g2.setFont(u8g2_font_7x14_mf);
u8g2.drawStr(26, 15, item_titles[item_sel_prev]);
// Selected Item
u8g2.drawXBMP(4, 24, 16, 16, item_icons[item_sel_curr]);
u8g2.setFont(u8g2_font_7x14B_mf);
u8g2.drawStr(26, 37, item_titles[item_sel_curr]);
u8g2.drawXBMP(0, 22, 128, 21, bitmap_item_sel_background);
// Next Item
u8g2.drawXBMP(4, 46, 16, 16, item_icons[item_sel_next]);
u8g2.setFont(u8g2_font_7x14_mf);
u8g2.drawStr(26, 59, item_titles[item_sel_next]);
// Scroll Bar
u8g2.drawXBMP(120, 0, 8, 64, bitmap_scroll_bar);
// Scroll Handle
u8g2.drawBox(125, getScrollPixel(scroll_percentage), 3, scroll_handle_height);
} while (u8g2.nextPage());
}
int getScrollPixel(int val) {
return map(val, 0, 100, 0, 64);
}
void drawItem(int val) {
if (btn_pressed) {
memory.update(10 + val, last_rot_val);
btn_pressed = false;
return toMenu();
}
int curr_val = rot_val;
if (rot_val != last_rot_val) {
if (curr_val < 0) {
rot_val = curr_val = 1;
}
if (curr_val > 1) {
rot_val = curr_val = 0;
}
last_rot_val = rot_val;
}
u8g2.firstPage();
do {
u8g2.setFont(u8g2_font_7x14B_mf);
u8g2.drawStr(26, 37, "Status: ");
u8g2.drawStr(80, 37, (curr_val == 1) ? "On" : "Off");
} while (u8g2.nextPage());
}
void toMenu() {
current_screen = MENU_SCR;
rot_val = memory.read(SEL_MENU_ITEM_MEM_ADDR);
}
void rotaryInterruptHandler() {
static unsigned long last_rot_interrupt_time = 0;
unsigned long interrupt_time = millis();
if (interrupt_time - last_rot_interrupt_time > 5) {
if (digitalRead(ROT_DAT) == LOW) {
--rot_val;
} else {
++rot_val;
}
}
last_rot_interrupt_time = interrupt_time;
}
void buttonInterruptHandler() {
static unsigned long last_btn_interrupt_time = 0;
unsigned long interrupt_time = millis();
if (interrupt_time - last_btn_interrupt_time > 5) {
btn_pressed = true;
}
last_btn_interrupt_time = interrupt_time;
}