基于STM32F103C8T6的簡單版OLED菜單界面
之前做了個的測試電機轉速的測試闆，還有不知道什麼時候買的OLED屏（還隻有IIC接口），剛好用來做個菜單練練手，顯示效果如下：
環境：
1.核心闆：STM32F103C8T6最小系統闆以及一些按鍵開關
2.OLED顯示子產品：IIC接口（因為我買的OLED是老）
3.編譯環境：Keil MDK
要OLED子產品做個簡單的三級菜單顯示，其實隻要做好界面顯示就行了，這個網上有很多例程，由于我的OLED子產品隻有IIC的腳位，我就簡要說說我怎麼通過配置IIC來實作OLED子產品的三級菜單顯示。
首先要像點燈一樣先把OLED點亮，借鑒了一下網上的例程，做了些更改，大緻如下：
首先看下main函數：
int main (void)
{
delay_init();
LED_Init();
key_init();
I2C_Configuration();
OLED_Init();
//Adc_init();
//TIM1_Encoder_Init(1024-1,0);
//TIM2_Encoder_Init(1024-1,0);
TIM3_init(1000-1,72-1);
OLED_CLS();//清屏
while(1)
{
deal_allkey_press();//處理各種按鍵事件
Mision_1ms();//1ms掃描任務
//show_num();//數位管顯示
show_UI();//OLED顯示
}
}
然後是IIC的配置
void I2C_Configuration(void)
{
I2C_InitTypeDef I2C_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE);
/*STM32F103C8T6晶片的硬體I2C: PB6 -- SCL; PB7 -- SDA */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;//I2C必須開漏輸出
GPIO_Init(GPIOB, &GPIO_InitStructure);
I2C_DeInit(I2C1);//使用I2C1
I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
I2C_InitStructure.I2C_OwnAddress1 = 0x30;//主機的I2C位址,随便寫的
I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
I2C_InitStructure.I2C_ClockSpeed = 400000;//400K
I2C_Cmd(I2C1, ENABLE);
I2C_Init(I2C1, &I2C_InitStructure);
}
void I2C_WriteByte(uint8_t addr,uint8_t data)
{
//固件庫
while(I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY));
I2C_GenerateSTART(I2C1, ENABLE);//開啟I2C1
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));/*EV5,主模式*/
I2C_Send7bitAddress(I2C1, OLED_ADDRESS, I2C_Direction_Transmitter);//器件位址 -- 預設0x78
while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
I2C_SendData(I2C1, addr);//寄存器位址
while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
I2C_SendData(I2C1, data);//發送資料
while (!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
I2C_GenerateSTOP(I2C1, ENABLE);//關閉I2C1總線
}
void WriteCmd(unsigned char I2C_Command)//寫指令
{
I2C_WriteByte(0x00, I2C_Command);
}
void WriteDat(unsigned char I2C_Data)//寫資料
{
I2C_WriteByte(0x40, I2C_Data);
}
接着根據一些例子改寫的OLED子產品的配置，當然下面還需要一個對應的取模頭檔案codetab.h
#include "oled_iic.h"
#include "codetab.h"
#include "timer.h"
#include "led.h"
#include <stdio.h>
void OLED_Init(void)
{
// delay_ms(100); //這裡的延時很重要
delay_ms(50); //這裡的延時很重要
WriteCmd(0xAE); //display off
WriteCmd(0x20); //Set Memory Addressing Mode
WriteCmd(0x10); //00,Horizontal Addressing Mode;01,Vertical Addressing Mode;10,Page Addressing Mode (RESET);11,Invalid
WriteCmd(0xb0); //Set Page Start Address for Page Addressing Mode,0-7
WriteCmd(0xc8); //Set COM Output Scan Direction
WriteCmd(0x00); //---set low column address
WriteCmd(0x10); //---set high column address
WriteCmd(0x40); //--set start line address
WriteCmd(0x81); //--set contrast control register
WriteCmd(0xff); //亮度調節 0x00~0xff
WriteCmd(0xa1); //--set segment re-map 0 to 127
WriteCmd(0xa6); //--set normal display
WriteCmd(0xa8); //--set multiplex ratio(1 to 64)
WriteCmd(0x3F); //
WriteCmd(0xa4); //0xa4,Output follows RAM content;0xa5,Output ignores RAM content
WriteCmd(0xd3); //-set display offset
WriteCmd(0x00); //-not offset
WriteCmd(0xd5); //--set display clock divide ratio/oscillator frequency
WriteCmd(0xf0); //--set divide ratio
WriteCmd(0xd9); //--set pre-charge period
WriteCmd(0x22); //
WriteCmd(0xda); //--set com pins hardware configuration
WriteCmd(0x12);
WriteCmd(0xdb); //--set vcomh
WriteCmd(0x20); //0x20,0.77xVcc
WriteCmd(0x8d); //--set DC-DC enable
WriteCmd(0x14); //
WriteCmd(0xaf); //--turn on oled panel
}
void OLED_SetPos(unsigned char x, unsigned char y) //設定起始點坐标
{
WriteCmd(0xb0+y);
WriteCmd(((x&0xf0)>>4)|0x10);
WriteCmd((x&0x0f)|0x01);
}
void OLED_Fill(unsigned char fill_Data)//全屏填充
{
unsigned char m,n;
for(m=0;m<8;m++)
{
WriteCmd(0xb0+m); //page0-page1
WriteCmd(0x00); //low column start address
WriteCmd(0x10); //high column start address
for(n=0;n<128;n++)
{
WriteDat(fill_Data);
}
}
}
void OLED_CLS(void)//清屏
{
OLED_Fill(0x00);
}
void OLED_data_up(unsigned char fill_Data)
{
unsigned char m,n;
for(m=0;m<2;m++)
{
WriteCmd(0xb2+m); //page0-page1
WriteCmd(0x00); //low column start address
WriteCmd(0x10); //high column start address
for(n=0;n<128;n++)
{
WriteDat(fill_Data);
}
}
}
void up_data(void)//重新整理顯示
{
OLED_data_up(0x00);
}
void OLED_time_up(unsigned char fill_Data)
{
unsigned char m,n;
for(m=0;m<2;m++)
{
WriteCmd(0xb4+m); //page0-page1
WriteCmd(0x00); //low column start address
WriteCmd(0x10); //high column start address
for(n=0;n<128;n++)
{
WriteDat(fill_Data);
}
}
}
void up_time(void)//重新整理顯示
{
OLED_time_up(0x00);
}
//--------------------------------------------------------------
// Prototype : void OLED_ON(void)
// Calls :
// Parameters : none
// Description : 将OLED從休眠中喚醒
//--------------------------------------------------------------
void OLED_ON(void)
{
WriteCmd(0X8D); //設定電荷泵
WriteCmd(0X14); //開啟電荷泵
WriteCmd(0XAF); //OLED喚醒
}
//--------------------------------------------------------------
// Prototype : void OLED_OFF(void)
// Calls :
// Parameters : none
// Description : 讓OLED休眠 -- 休眠模式下,OLED功耗不到10uA
//--------------------------------------------------------------
void OLED_OFF(void)
{
WriteCmd(0X8D); //設定電荷泵
WriteCmd(0X10); //關閉電荷泵
WriteCmd(0XAE); //OLED休眠
}
//--------------------------------------------------------------
// Prototype : void OLED_ShowChar(unsigned char x, unsigned char y, unsigned char ch[], unsigned char TextSize)
// Calls :
// Parameters : x,y -- 起始點坐标(x:0~127, y:0~7); ch[] -- 要顯示的字元串; TextSize -- 字元大小(1:6*8 ; 2:8*16)
// Description : 顯示codetab.h中的ASCII字元,有6*8和8*16可選擇
//--------------------------------------------------------------
void OLED_ShowStr(unsigned char x, unsigned char y, unsigned char ch[], unsigned char TextSize)
{
unsigned char c = 0,i = 0,j = 0;
switch(TextSize)
{
case 1:
{
while(ch[j] != '\0')
{
c = ch[j] - 32;
if(x > 126)
{
x = 0;
y++;
}
OLED_SetPos(x,y);
for(i=0;i<6;i++)
WriteDat(F6x8[c][i]);
x += 6;
j++;
}
}break;
case 2:
{
while(ch[j] != '\0')
{
c = ch[j] - 32;
if(x > 120)
{
x = 0;
y++;
}
OLED_SetPos(x,y);
for(i=0;i<8;i++)
WriteDat(F8X16[c*16+i]);
OLED_SetPos(x,y+1);
for(i=0;i<8;i++)
WriteDat(F8X16[c*16+i+8]);
x += 8;
j++;
}
}break;
}
}
//--------------------------------------------------------------
// Prototype : void OLED_ShowCN(unsigned char x, unsigned char y, unsigned char N)
// Calls :
// Parameters : x,y -- 起始點坐标(x:0~127, y:0~7); N:漢字在codetab.h中的索引
// Description : 顯示codetab.h中的漢字,16*16點陣
//--------------------------------------------------------------
void OLED_ShowCN(unsigned char x, unsigned char y, unsigned char N)
{
unsigned char wm=0;
unsigned int adder=32*N;
OLED_SetPos(x , y);
for(wm = 0;wm < 16;wm++)
{
WriteDat(F16x16[adder]);
adder += 1;
}
OLED_SetPos(x,y + 1);
for(wm = 0;wm < 16;wm++)
{
WriteDat(F16x16[adder]);
adder += 1;
}
}
//--------------------------------------------------------------
// Prototype : void OLED_DrawBMP(unsigned char x0,unsigned char y0,unsigned char x1,unsigned char y1,unsigned char BMP[]);
// Calls :
// Parameters : x0,y0 -- 起始點坐标(x0:0~127, y0:0~7); x1,y1 -- 起點對角線(結束點)的坐标(x1:1~128,y1:1~8)
// Description : 顯示BMP位圖
//--------------------------------------------------------------
void OLED_DrawBMP(unsigned char x0,unsigned char y0,unsigned char x1,unsigned char y1,unsigned char BMP[])
{
unsigned int j=0;
unsigned char x,y;
if(y1%8==0)
y = y1/8;
else
y = y1/8 + 1;
for(y=y0;y<y1;y++)
{
OLED_SetPos(x0,y);
for(x=x0;x<x1;x++)
{
WriteDat(BMP[j++]);
}
}
}
//顯示界面
void show_UI(void)
{
//滾動顯示所有界面
// show_first_interface();
// delay_ms(500);
// show_menu();
// delay_ms(500);
// show_chosen_current();
// delay_ms(500);
// show_current_test();
// delay_ms(500);
// show_chosen_rotation();
// delay_ms(500);
// show_rotation_test();
// delay_ms(500);
// show_chosen_all();
// delay_ms(500);
// show_all_test();
// delay_ms(500);
if(time13 >= 500)
{
time13 = 0;
INTERFACE_Statment();//狀态機顯示菜單
}
}
void show_chosen_current(void)
{
unsigned char table[20] = ">>";
unsigned char table1[10] = " ";
OLED_ShowStr(0, 0, table, 2); //>>
OLED_ShowStr(0, 2, table1, 2); //
OLED_ShowStr(0, 4, table1, 2); //
}
void show_chosen_rotation(void)
{
unsigned char table[20] = ">>";
unsigned char table1[10] = " ";
OLED_ShowStr(0, 0, table1, 2); //>>
OLED_ShowStr(0, 2, table, 2); //>>
OLED_ShowStr(0, 4, table1, 2); //>>
}
void show_chosen_all(void)
{
unsigned char table[20] = ">>";
unsigned char table1[10] = " ";
OLED_ShowStr(0, 0, table1, 2); //>>
OLED_ShowStr(0, 2, table1, 2); //>>
OLED_ShowStr(0, 4, table, 2); //>>
}
void show_menu(void)
{
unsigned char table0[20] = "1.";
unsigned char table1[20] = "2.";
unsigned char table2[20] = "3.";
OLED_ShowStr(16, 0, table0, 2); //1.
OLED_ShowCN(32, 0, 5); //電
OLED_ShowCN(48, 0, 7); //流
OLED_ShowCN(64, 0, 9); //檢
OLED_ShowCN(80, 0, 10); //測
OLED_ShowStr(16, 2, table1, 2); //2.
OLED_ShowCN(32, 2, 3); //轉
OLED_ShowCN(48, 2, 4); //速
OLED_ShowCN(64, 2, 9); //檢
OLED_ShowCN(80, 2, 10); //測
OLED_ShowStr(16, 4, table2, 2); //3.
OLED_ShowCN(32, 4, 15); //一
OLED_ShowCN(48, 4, 16); //鍵
OLED_ShowCN(64, 4, 9); //檢
OLED_ShowCN(80, 4, 10); //測
OLED_ShowCN(0, 6, 11); //确
OLED_ShowCN(16, 6, 12); //認
OLED_ShowCN(96, 6, 13); //返
OLED_ShowCN(112, 6, 14); //回
}
void show_current_test(void)
{
//顯示經取模軟體設定好的漢字
unsigned char table0[20] = ":xx ";
unsigned char table1[20] = ":xx ";
unsigned char table5[20] = ": ";
if((IDC_mA_left >= 999)||(IDC_mA_right >= 999))
{
IDC_mA_left = 0;
IDC_mA_right = 0;
}
sprintf((char *)table0,":%d mA", (int)read_IDC_mA_left());
sprintf((char *)table1,":%d mA", (int)read_IDC_mA_right());
OLED_ShowCN(32, 0, 5); //電
OLED_ShowCN(48, 0, 7); //流
OLED_ShowCN(64, 0, 9); //檢
OLED_ShowCN(80, 0, 10); //測
OLED_ShowCN(0, 2, 0); //左
OLED_ShowCN(16, 2, 2); //側
OLED_ShowCN(32, 2, 5); //電
OLED_ShowCN(48, 2, 7); //流
OLED_ShowCN(0, 4, 1); //右
OLED_ShowCN(16, 4, 2); //側
OLED_ShowCN(32, 4, 5); //電
OLED_ShowCN(48, 4, 7); //流
OLED_ShowCN(0, 6, 9); //檢
OLED_ShowCN(16, 6, 10); //測
OLED_ShowCN(96, 6, 13); //返
OLED_ShowCN(112, 6, 14); //回
if(time >= 500)
{
time = 0;
//清資料
OLED_ShowStr(64, 2, table5, 2);
OLED_ShowStr(64, 4, table5, 2);
OLED_ShowStr(64, 2, table0, 2); //顯示對應的數值
OLED_ShowStr(64, 4, table1, 2); //顯示對應的數值
}
}
void show_rotation_test(void)
{
//顯示經取模軟體設定好的漢字
unsigned char table0[20] = ":xx ";
unsigned char table1[20] = ":xx ";
unsigned char table5[20] = ": ";
if((rotation_left_value >= 999)||(rotation_right_value >= 999))
{
rotation_left_value = 0;
rotation_right_value = 0;
}
sprintf((char *)table0,":%d rpm", (int)rotation_left_value);
sprintf((char *)table1,":%d rpm", (int)rotation_right_value);
OLED_ShowCN(32, 0, 3); //轉
OLED_ShowCN(48, 0, 4); //速
OLED_ShowCN(64, 0, 9); //檢
OLED_ShowCN(80, 0, 10); //測
OLED_ShowCN(0, 2, 0); //左
OLED_ShowCN(16, 2, 2); //側
OLED_ShowCN(32, 2, 3); //轉
OLED_ShowCN(48, 2, 4); //速
OLED_ShowCN(0, 4, 1); //右
OLED_ShowCN(16, 4, 2); //側
OLED_ShowCN(32, 4, 3); //轉
OLED_ShowCN(48, 4, 4); //速
OLED_ShowCN(0, 6, 9); //檢
OLED_ShowCN(16, 6, 10); //測
OLED_ShowCN(96, 6, 13); //返
OLED_ShowCN(112, 6, 14); //回
if(time >= 500)
{
time = 0;
//清資料
OLED_ShowStr(64, 2, table5, 2);
OLED_ShowStr(64, 4, table5, 2);
OLED_ShowStr(64, 2, table0, 2); //顯示對應的數值
OLED_ShowStr(64, 4, table1, 2); //顯示對應的數值
}
}
void show_all_test(void)
{
int i;
//顯示經取模軟體設定好的漢字
// unsigned char table[20] = "DSpower";
unsigned char table[20] = ":xx ";
unsigned char table0[20] = ":xx ";
unsigned char table1[20] = ":xx ";
unsigned char table2[20] = ":xx ";
unsigned char table3[20] = ": ";//左輪轉向
unsigned char table4[20] = ": ";//右輪轉向
unsigned char table5[20] = ": ";
unsigned char table6[20] = ": ";
unsigned char ccw [10] = "ccw";
unsigned char cw [10] = " cw";
unsigned char stop[10] = "Q_Q";
if(Rotation_speed_difference >= 0)
{
Rotation_speed_difference = Rotation_speed_difference;
}
else if(Rotation_speed_difference < 0)
{
Rotation_speed_difference = -Rotation_speed_difference;
}
sprintf((char *)table2,":%d rpm", rotation_left_value);
sprintf((char *)table0,":%d rpm", rotation_right_value);
sprintf((char *)table, ":%d rpm", (int)Rotation_speed_difference);
sprintf((char *)table1,":%d mA", (int)read_IDC_mA());
OLED_ShowCN(0, 0, 3);//轉
OLED_ShowCN(16, 0, 6);//差
// OLED_ShowCN(97, 0, 3);//轉
// OLED_ShowCN(113, 0, 8);//向
OLED_ShowCN(0, 2, 0); //左
OLED_ShowCN(16, 2, 2); //側
// OLED_ShowCN(32, 4, 3); //轉
// OLED_ShowCN(48, 4, 4); //速
OLED_ShowCN(0, 4, 1); //右
OLED_ShowCN(16, 4, 2); //側
// OLED_ShowCN(32, 2, 3); //轉
// OLED_ShowCN(48, 2, 4); //速
OLED_ShowCN(0, 6, 5); //電
OLED_ShowCN(16, 6, 7); //流
OLED_ShowCN(96, 6, 13); //返
OLED_ShowCN(112, 6, 14); //回
if(time >= 500)
{
time = 0;
//清資料
OLED_ShowStr(32, 0, table5, 2);
OLED_ShowStr(32, 2, table5, 2);
OLED_ShowStr(32, 4, table5, 2);
OLED_ShowStr(32, 6, table6, 2);
OLED_ShowStr(32,0,table,2);//
OLED_ShowStr(32, 2, table2, 2);//
OLED_ShowStr(32, 4, table0, 2);//
OLED_ShowStr(32, 6, table1, 2);//
OLED_ShowStr(104, 2, table3, 2);//cw 0 ccw 左輪z
OLED_ShowStr(104, 4, table4, 2);// cw 0 ccw 右輪
}
}
void show_first_interface(void)
{
// show_bmp(1);
show_bmp(2);
}
void show_bmp(u8 a)
{
switch(a)
{
case 1:
OLED_DrawBMP(0,0,127,7,BMP1);
break;
case 2:
OLED_DrawBMP(0,0,127,7,BMP2);
break;
case 3:
OLED_DrawBMP(0,0,127,7,BMP3);
break;
case 4:
OLED_DrawBMP(0,0,127,7,BMP4);
break;
default:
break;
}
}
接下來是自己寫的的按鍵驅動程式，包括單擊輕按兩下和長按，如果需要可以在評論區回複；由于這裡隻用到了單擊，那我也貼出部分代碼吧：
//#define KEY7 PBin(9)這個放在頭檔案裡
u16 key7up_flag = 1; u16 key7down_flag = 0;//按鍵彈起标志 按鍵按下标志
u16 key7up_cnt = 0; u16 key7down_cnt = 0;//按鍵彈起後計數值 按鍵按下後計數值
u16 key7_short_flag = 0;//短按标志
u16 key7_idle_flag = 0;//非空閑
u16 key7up_cnt2 = 0;
void key7_scan(void)//key7作為 ADD
{
//當按鍵持續按下
if(0 == ( GPIOB->IDR & (1<<9)))
{
key7down_cnt++;
if(key7down_cnt >= 10)//去抖時間
{
key7down_flag = 1;
key7up_flag = 0;//擡起清零
key7up_cnt = 0;
if(key7_idle_flag)
{
key7_idle_flag = 0;
}
}
}
//如果按鍵松開
else
{
if(key7_idle_flag)
return;
key7up_cnt ++;
//負防抖 ***************************************
if(key7up_cnt >= 50)
{
key7up_flag = 1;
key7down_flag = 0;
key7down_cnt = 0;
}
//按下時間大于100ms，判斷為單擊
if(key7down_cnt >= 50)
{
key7_short_flag = 1;//**************** 短按（單擊）
key7down_flag = 0;
key7down_cnt = 0;
}
else //按下時間小于50ms，忽略
{
key7up_cnt = 0;//彈起計數清零
key7up_flag = 0;
key7down_cnt = 0;//清零按下抖動的次數
key7_short_flag = 0;
key7down_flag = 0;//按下标志清零
key7_idle_flag = 1;//如果擡起持續1s沒動作，就判斷為空閑狀态
}
}
if(key7_short_flag)
{
key7_short_flag = 0;
key7_press = 1;
}
}
void deal_key7_press(void)
{
if(key7_press)
{
key7_press = 0;
Menu_Key_Down();
}
}
最後菜單的顯示用的是狀态機，不過剛剛學的狀态機可能用的還不太好，以下是menu.c
#include "menu.h"
//用狀态機做菜單顯示
INTERFACE_OPTIONS interfece;
void INTERFACE_Statment(void)
{
switch(interfece)
{
case MAIN_INTERFACE:
show_first_interface();
break;
case MENU_INTERFACE:
show_menu();
break;
case CURRENT_CHOSEN:
show_chosen_current();
show_menu();
break;
case ROTATION_CHOSEN:
show_chosen_rotation();
show_menu();
break;
case ALL_TEST_CHOSEN:
show_chosen_all();
show_menu();
break;
case CURRENT_TEST_INTERFACE:
show_current_test();
break;
case ROTATION_TEST_INTERFACE:
show_rotation_test();
break;
case ALL_TEST_INTERFACE:
show_all_test();
break;
default:
break;
}
}
void Menu_Key_Enter(void)
{
OLED_CLS();//清屏
if(interfece == MAIN_INTERFACE)
{
interfece = MENU_INTERFACE;
}
else if(interfece == MENU_INTERFACE)
{
interfece = CURRENT_CHOSEN;
}
else if(interfece == CURRENT_CHOSEN)
{
interfece = CURRENT_TEST_INTERFACE;
}
else if(interfece == ROTATION_CHOSEN)
{
interfece = ROTATION_TEST_INTERFACE;
}
else if(interfece == ALL_TEST_CHOSEN)
{
interfece = ALL_TEST_INTERFACE;
}
}
void Menu_Key_Return(void)
{
OLED_CLS();//清屏
if(interfece == MENU_INTERFACE)
{
interfece = MAIN_INTERFACE;
}
if(interfece == CURRENT_CHOSEN)
{
interfece = MENU_INTERFACE;
}
if(interfece == ROTATION_CHOSEN)
{
interfece = MENU_INTERFACE;
}
if(interfece == ALL_TEST_CHOSEN)
{
interfece = MENU_INTERFACE;
}
if(interfece == CURRENT_TEST_INTERFACE)
{
interfece = CURRENT_CHOSEN;
}
if(interfece == ROTATION_TEST_INTERFACE)
{
interfece = ROTATION_CHOSEN;
}
if(interfece == ALL_TEST_INTERFACE)
{
interfece = ALL_TEST_CHOSEN;
}
}
void Menu_Key_Up(void)
{
// OLED_CLS();//清屏
if(interfece == CURRENT_CHOSEN)
{
interfece = ALL_TEST_CHOSEN;
}
else if(interfece == ALL_TEST_CHOSEN)
{
interfece = ROTATION_CHOSEN;
}
else if(interfece == ROTATION_CHOSEN)
{
interfece = CURRENT_CHOSEN;
}
}
void Menu_Key_Down(void)
{
// OLED_CLS();//清屏
if(interfece == CURRENT_CHOSEN)
{
interfece = ROTATION_CHOSEN;
}
else if(interfece == ROTATION_CHOSEN)
{
interfece = ALL_TEST_CHOSEN;
}
else if(interfece == ALL_TEST_CHOSEN)
{
interfece = CURRENT_CHOSEN;
}
}
以上就是本人用OLED子產品做的三級菜單顯示，首先是OLED子產品的顯示了（這一步做好了才有菜單，先做一個界面，再自按自己的意願自由改變界面顯示，然後再考慮布局、美觀等），菜單顯示部分主要是用到狀态機，另外就是按鍵驅動部分（這個網上也有很多例程），這期間或許了解還不到位或者還沒見識到更進階的處理，需要大家多多指出和互相交流，本文不足之處希望大家多多指出，非常感謝。
![input子系統驅動編寫（按鍵）[圖]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)