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 timingLCD_WriteReg(R231, 0x0012); // Set internal timingLCD_WriteReg(R239, 0x1231); // Set internal timingLCD_WriteReg(R1, 0x0100); // set SS and SM bit //0x0100LCD_WriteReg(R2, 0x0700); // set 1 line inversionLCD_WriteReg(R3, 0x1030); // set GRAM write direction and BGR=1.LCD_WriteReg(R4, 0x0000); // Resize registerLCD_WriteReg(R8, 0x0207); // set the back porch and front porchLCD_WriteReg(R9, 0x0000); // set non-display area refresh cycle ISC[3:0]LCD_WriteReg(R10, 0x0000); // FMARK functionLCD_WriteReg(R12, 0x0000); // RGB interface settingLCD_WriteReg(R13, 0x0000); // Frame marker PositionLCD_WriteReg(R15, 0x0000); // RGB interface polarity/**************Power On sequence ****************/LCD_WriteReg(R16, 0x0000); // SAP, BT[3:0], AP, DSTB, SLP, STBLCD_WriteReg(R17, 0x0007); // DC1[2:0], DC0[2:0], VC[2:0]LCD_WriteReg(R18, 0x0000); // VREG1OUT voltageLCD_WriteReg(R19, 0x0000); // VDV[4:0] for VCOM amplitude// Delay_Ms(200); // Delay 200 MS , Dis-charge capacitor power voltageHAL_Delay(200);LCD_WriteReg(R16, 0x1690); // SAP, BT[3:0], AP, DSTB, SLP, STBLCD_WriteReg(R17, 0x0227); // R11H=0x0221 at VCI=3.3V, DC1[2:0], DC0[2:0], VC[2:0]// Delay_Ms(50); // Delay 50msHAL_Delay(50);LCD_WriteReg(R18, 0x001D); // External reference voltage= Vci;// Delay_Ms(50); // Delay 50msHAL_Delay(50);LCD_WriteReg(R19, 0x0800); // R13H=1D00 when R12H=009D;VDV[4:0] for VCOM amplitudeLCD_WriteReg(R41, 0x0014); // R29H=0013 when R12H=009D;VCM[5:0] for VCOMHLCD_WriteReg(R43, 0x000B); // Frame Rate = 96Hz// Delay_Ms(50); // Delay 50msHAL_Delay(50);LCD_WriteReg(R32, 0x0000); // GRAM horizontal AddressLCD_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 AddressLCD_WriteReg(R81, 0x00EF); // Horizontal GRAM End AddressLCD_WriteReg(R82, 0x0000); // Vertical GRAM Start AddressLCD_WriteReg(R83, 0x013F); // Vertical GRAM Start AddressLCD_WriteReg(R96, 0xA700); // Gate Scan Line 0xA700LCD_WriteReg(R97, 0x0001); // NDL,VLE, REVLCD_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); //0x1018LCD_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
}