嵌入式蓝桥杯学习拓展 LCD翻转显示

通过配置SS和GS两个标志位，实现扫描方向的切换。

将lcd.c的REG_932X_Init函数进行部分修改。

将LCD_WriteReg(R1, 0x0000);修改为LCD_WriteReg(R1,0x0100);  
将LCD_WriteReg(R96, 0x2700); 修改为LCD_WriteReg(R96, 0xA700);

void REG_932X_Init1(void)
{
    LCD_WriteReg(R227, 0x3008);   // Set internal timing
    LCD_WriteReg(R231, 0x0012); // Set internal timing
    LCD_WriteReg(R239, 0x1231);   // Set internal timing
    LCD_WriteReg(R1, 0x0100);   // set SS and SM bit		  //0x0100
    LCD_WriteReg(R2, 0x0700);   // set 1 line inversion
    LCD_WriteReg(R3, 0x1030);     // set GRAM write direction and BGR=1.
    LCD_WriteReg(R4, 0x0000);     // Resize register
    LCD_WriteReg(R8, 0x0207);     // set the back porch and front porch
    LCD_WriteReg(R9, 0x0000);     // set non-display area refresh cycle ISC[3:0]
    LCD_WriteReg(R10, 0x0000);    // FMARK function
    LCD_WriteReg(R12, 0x0000);  // RGB interface setting
    LCD_WriteReg(R13, 0x0000);    // Frame marker Position
    LCD_WriteReg(R15, 0x0000);  // RGB interface polarity
    /**************Power On sequence ****************/
    LCD_WriteReg(R16, 0x0000);    // SAP, BT[3:0], AP, DSTB, SLP, STB
    LCD_WriteReg(R17, 0x0007);    // DC1[2:0], DC0[2:0], VC[2:0]
    LCD_WriteReg(R18, 0x0000);  // VREG1OUT voltage
    LCD_WriteReg(R19, 0x0000);    // VDV[4:0] for VCOM amplitude
    //	Delay_Ms(200);                    // Delay 200 MS , Dis-charge capacitor power voltage
    HAL_Delay(200);
    LCD_WriteReg(R16, 0x1690);    // SAP, BT[3:0], AP, DSTB, SLP, STB
    LCD_WriteReg(R17, 0x0227);  // R11H=0x0221 at VCI=3.3V, DC1[2:0], DC0[2:0], VC[2:0]
    //	Delay_Ms(50);      // Delay 50ms
    HAL_Delay(50);
    LCD_WriteReg(R18, 0x001D);  // External reference voltage= Vci;
    //	Delay_Ms(50);      // Delay 50ms
    HAL_Delay(50);
    LCD_WriteReg(R19, 0x0800);  // R13H=1D00 when R12H=009D;VDV[4:0] for VCOM amplitude
    LCD_WriteReg(R41, 0x0014);  // R29H=0013 when R12H=009D;VCM[5:0] for VCOMH
    LCD_WriteReg(R43, 0x000B);    // Frame Rate = 96Hz
    //	Delay_Ms(50);      // Delay 50ms
    HAL_Delay(50);
    LCD_WriteReg(R32, 0x0000);  // GRAM horizontal Address
    LCD_WriteReg(R33, 0x0000);  // GRAM Vertical Address
    /* ----------- Adjust the Gamma Curve ---------- */
    LCD_WriteReg(R48, 0x0007);
    LCD_WriteReg(R49, 0x0707);
    LCD_WriteReg(R50, 0x0006);
    LCD_WriteReg(R53, 0x0704);
    LCD_WriteReg(R54, 0x1F04);
    LCD_WriteReg(R55, 0x0004);
    LCD_WriteReg(R56, 0x0000);
    LCD_WriteReg(R57, 0x0706);
    LCD_WriteReg(R60, 0x0701);
    LCD_WriteReg(R61, 0x000F);
    /* ------------------ Set GRAM area --------------- */
    LCD_WriteReg(R80, 0x0000);    // Horizontal GRAM Start Address
    LCD_WriteReg(R81, 0x00EF);    // Horizontal GRAM End Address
    LCD_WriteReg(R82, 0x0000);  // Vertical GRAM Start Address
    LCD_WriteReg(R83, 0x013F);  // Vertical GRAM Start Address
    LCD_WriteReg(R96, 0xA700);  // Gate Scan Line		  0xA700
    LCD_WriteReg(R97, 0x0001);  // NDL,VLE, REV
    LCD_WriteReg(R106, 0x0000); // set scrolling line
    /* -------------- Partial Display Control --------- */
    LCD_WriteReg(R128, 0x0000);
    LCD_WriteReg(R129, 0x0000);
    LCD_WriteReg(R130, 0x0000);
    LCD_WriteReg(R131, 0x0000);
    LCD_WriteReg(R132, 0x0000);
    LCD_WriteReg(R133, 0x0000);
    /* -------------- Panel Control ------------------- */
    LCD_WriteReg(R144, 0x0010);
    LCD_WriteReg(R146, 0x0000);
    LCD_WriteReg(R147, 0x0003);
    LCD_WriteReg(R149, 0x0110);
    LCD_WriteReg(R151, 0x0000);
    LCD_WriteReg(R152, 0x0000);
    /* Set GRAM write direction and BGR = 1 */
    /* I/D=01 (Horizontal : increment, Vertical : decrement) */
    /* AM=1 (address is updated in vertical writing direction) */
    LCD_WriteReg(R3, 0x01018);    //0x1018

    LCD_WriteReg(R7, 0x0173);   // 262K color and display ON
}

修改以上内容即可完成翻转显示。

按键实现LCD翻转

#include "my_main.h"
uint8_t led_sta=0x01;
char text[30];
void LED_Disp(uint8_t dsLED)
{
	HAL_GPIO_WritePin(GPIOC,GPIO_PIN_All,GPIO_PIN_SET);//所有LED熄灭（l小写）
	HAL_GPIO_WritePin(GPIOC,dsLED<<8,GPIO_PIN_RESET);//左移8位：控制C8-C15引脚，值为1的电量
	HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_SET);//开锁存器
	HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_RESET);//关锁存器
}

//单独控制LED某一位
void LED_chg(uint8_t num,uint8_t sta)
{
	uint8_t pos=0x01<<(num-1);
	led_sta=(led_sta&(~pos))|(pos*sta);
	LED_Disp(led_sta);
}


//程序开始时执行一次
void setup()
{
	LED_Disp(0x00);
	LCD_Init();
	LCD_SetBackColor(Black);
	LCD_SetTextColor(White);

}
//反复执行
void loop()
{
	if(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_0)==GPIO_PIN_RESET)
	{
		HAL_Delay(10);
		if(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_0)==GPIO_PIN_RESET)
		{
			led_sta=(led_sta&0xfe)|0x01;
			led_sta=(led_sta&0xfd)|0x00;
			LED_Disp(led_sta);			
		}
	}
	
	if(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_1)==GPIO_PIN_RESET)
	{
		HAL_Delay(10);
		if(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_1)==GPIO_PIN_RESET)
		{
			led_sta=(led_sta&0xfd)|0x02;
			led_sta=(led_sta&0xfe)|0x00;
			LED_Disp(led_sta);	
			//180°翻转屏幕
			//LCD_Clear(Black);
			//REG_932X_Init1();
		}
	}
	/*     LCD演示     */
	sprintf(text,"    number:%x  ",led_sta);
	LCD_DisplayStringLine(Line8,(uint8_t *)text);//局部刷新
	
	LCD_SetBackColor(Yellow);
	sprintf(text,"    T:%d                ",30);
	LCD_DisplayStringLine(Line5,(uint8_t *)text);//局部刷新
	LCD_SetBackColor(Black);
	sprintf(text,"    X:A01  ");
	LCD_DisplayStringLine(Line6,(uint8_t *)text);//局部刷新
}