【CW32饭盒派开发板试用体验】TFT屏检测

CW32饭盒派开发板有提供三种屏幕的显示接口，分别是J3、J4、J5，支持IIC，SPI的通讯方式。由于武汉芯源官方提供了1.77寸TFT屏，因此使用这个屏就可展开GUI的项目开发。开箱贴中也展示了板子默认的出厂程序是通过调节电位器，进而控制AD采样的电压值，并显示在TFT屏上。屏的接口原理图如下：

屏的实物图背面如下图：

部分代码展示如下：

#include "main.h"
#include "LCD_calculate.h"
#include "Lcd_Driver.h"
void GPIO_Configuration(void);
void RCC_Configuration(void);

void Delay(__IO uint32_t nCount)
{
    /* Decrement nCount value */
    while (nCount != 0)
    {
        nCount--;
    }
}
int main()
{	
	uint8_t gnum;
	uint8_t snum;
	RCC_Configuration();  
	GPIO_Configuration();
	Lcd_Init();
	Lcd_Clear(GRAY0);             
	
	Gui_DrawFont_GBK16(10,5,BLACK,GRAY0,"HELLO CW32F030");
	Gui_DrawFont_GBK16(4,25,RED,GRAY0,"TIME:2023-06-03");
	Gui_DrawFont_Num32(10,45,BLUE,GRAY1,1);
	Gui_DrawFont_Num32(45,45,BLUE,GRAY1,2);
	Gui_DrawFont_Num32(10,80,BLUE,GRAY1,3);
	Gui_DrawFont_Num32(45,80,BLUE,GRAY1,4);
	while(1)
	{
		gnum++;
		if(gnum >9){gnum = 0;snum++;}
		if(snum >5){snum = 0;}
		Gui_DrawFont_Num32(63,120,BLUE,GRAY1,snum);
		Gui_DrawFont_Num32(93,120,BLUE,GRAY1,gnum);
		if(gnum % 2 == 0)Gui_DrawFont_Num32(80,45,BLUE,GRAY0,11);
		else{Lcd_Clear_1(WHITE);}
		Delay(0x3FFFFF);		
	}
}

void RCC_Configuration(void)
{
  RCC_HSI_Enable(RCC_HSIOSC_DIV6);
  RCC_HCLKPRS_Config(RCC_HCLK_DIV1);
  RCC_PCLKPRS_Config(RCC_PCLK_DIV1);
  
  RCC_PLL_Enable(RCC_PLLSOURCE_HSI, 8000000, 8); 
  
  __RCC_FLASH_CLK_ENABLE();
  FLASH_SetLatency(FLASH_Latency_3);   
    
  RCC_SysClk_Switch(RCC_SYSCLKSRC_PLL);
  RCC_SystemCoreClockUpdate(64000000);	
}
void GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStruct;
  __RCC_GPIOA_CLK_ENABLE();

  GPIO_InitStruct.IT = GPIO_IT_NONE; 
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pins = GPIO_PIN_7;
  GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
  GPIO_Init(CW_GPIOA, &GPIO_InitStruct);
  PB00_SETLOW();
}

void Gui_DrawFont_GBK16(unsigned int x, unsigned int y, unsigned int fc, unsigned int bc, char *s)
{
	unsigned char i,j;
	unsigned short k,x0;
	x0=x;

	while(*s) 
	{	
		if((*s) < 128) 
		{
			k=*s;
			if (k==13) 
			{
				x=x0;
				y+=16;
			}
			else 
			{
				if (k>32) k-=32; else k=0;
	
			    for(i=0;i<16;i++)
				for(j=0;j<8;j++) 
					{
				    	if(asc16[k*16+i]&(0x80>>j))	Gui_DrawPoint(x+j,y+i,fc);
						else 
						{
							if (fc!=bc) Gui_DrawPoint(x+j,y+i,bc);
						}
					}
				x+=8;
			}
			s++;
		}
			
		else 
		{
		

			for (k=0;k<hz16_num;k++) 
			{
			  if ((hz16[k].Index[0]==*(s))&&(hz16[k].Index[1]==*(s+1)))
			  { 
				    for(i=0;i<16;i++)
				    {
						for(j=0;j<8;j++) 
							{
						    	if(hz16[k].Msk[i*2]&(0x80>>j))	Gui_DrawPoint(x+j,y+i,fc);
								else {
									if (fc!=bc) Gui_DrawPoint(x+j,y+i,bc);
								}
							}
						for(j=0;j<8;j++) 
							{
						    	if(hz16[k].Msk[i*2+1]&(0x80>>j))	Gui_DrawPoint(x+j+8,y+i,fc);
								else 
								{
									if (fc!=bc) Gui_DrawPoint(x+j+8,y+i,bc);
								}
							}
				    }
				}
			  }
			s+=2;x+=16;
		} 
		
	}
}

void Gui_DrawFont_GBK24(unsigned int x, unsigned int y, unsigned int fc, unsigned int bc, unsigned char  *s)
{
	unsigned char i,j;
	unsigned short k;

	while(*s) 
	{
		if( *s < 0x80 ) 
		{
			k=*s;
			if (k>32) k-=32; else k=0;

		    for(i=0;i<16;i++)
			for(j=0;j<8;j++) 
				{
			    	if(asc16[k*16+i]&(0x80>>j))	
					Gui_DrawPoint(x+j,y+i,fc);
					else 
					{
						if (fc!=bc) Gui_DrawPoint(x+j,y+i,bc);
					}
				}
			s++;x+=8;
		}
		else 
		{

			for (k=0;k<hz24_num;k++) 
			{
			  if ((hz24[k].Index[0]==*(s))&&(hz24[k].Index[1]==*(s+1)))
			  { 
				    for(i=0;i<24;i++)
				    {
						for(j=0;j<8;j++) 
							{
						    	if(hz24[k].Msk[i*3]&(0x80>>j))
								Gui_DrawPoint(x+j,y+i,fc);
								else 
								{
									if (fc!=bc) Gui_DrawPoint(x+j,y+i,bc);
								}
							}
						for(j=0;j<8;j++) 
							{
						    	if(hz24[k].Msk[i*3+1]&(0x80>>j))	Gui_DrawPoint(x+j+8,y+i,fc);
								else {
									if (fc!=bc) Gui_DrawPoint(x+j+8,y+i,bc);
								}
							}
						for(j=0;j<8;j++) 
							{
						    	if(hz24[k].Msk[i*3+2]&(0x80>>j))	
								Gui_DrawPoint(x+j+16,y+i,fc);
								else 
								{
									if (fc!=bc) Gui_DrawPoint(x+j+16,y+i,bc);
								}
							}
				    }
			  }
			}
			s+=2;x+=24;
		}
	}
}
void Gui_DrawFont_Num32(unsigned int x, unsigned int y, unsigned int fc, unsigned int bc, unsigned int num)
{
	unsigned char i,j,k,c;
	
    for(i=0;i<32;i++)
		{
		for(j=0;j<4;j++) 
		{
			c=*(sz32+num*32*4+i*4+j);
			for (k=0;k<8;k++)	
			{
	
		    	if(c&(0x80>>k))	Gui_DrawPoint(x+j*8+k,y+i,fc);
				else {
					if (fc!=bc) Gui_DrawPoint(x+j*8+k,y+i,bc);
				}
			}
		}
	}
}

编译完成后，下载到开发板后，TFT屏显示的图样如下：

当然啦，例程只是检测一下刷屏的效果，呈现的效果见底下视频。