标题:
求教STC8H8K64S开通DMA_SPI传输模式驱动TFT屏
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作者:
大石头
时间:
2025-4-12 11:57
标题:
求教STC8H8K64S开通DMA_SPI传输模式驱动TFT屏
一块晶联讯3.5吋TFT屏，用STC8H8K64S开通了SPI模式驱动成功。速度比晶联讯公司提供的模拟SPI驱动快很多，想要再提高刷新率，就要开通DMA
模式了。手册上说STC8H8K64S支持DMA_SPI传输模式。但是我是小白不会弄，网上也少有可直接引用的例程（大多是STM32的）。所以肯请高手大佬帮我完善下面的程序。谢谢。
/* 开通SPI模式驱动TFT屏的串行程序：
型号:JLX350-01901-BN、横屏；
驱动 IC:ST7796S；
解决Keil的OxFD_BUG
1.使用HexEditor编辑Keil安装目录下的/keil/c51/bin/c51.exe文件，
搜索80FBFD改成80FBFF，如果使用汇编则修改A51.exe.
2.使用晓奇工作室出品的补丁程序ccKeilVxx.exe。下载后放在/keil/c51/bin/目录下运行即可。
KeilC51 0xFD BUG补丁 ccKeilVxx.exe下载
*/
#include <STC8H.H>
#include "string.h"
#define ulong unsigned long
#define uint unsigned int
#define uchar unsigned char
//液晶屏IC 所需要的信号线的接口定义
sbit C_S = P2^2;//液晶片选CS,P1.4为单片机SPI总线的SS引脚,通过MSTR位配置为IO模式
sbit R_ESET = P0^3; //液晶RESET引脚,接单片机IO引脚
sbit C_D = P0^4;//液晶D/CX引脚，数据/命令控制，接单片机IO引脚
//以下2个引脚的连接。因接单片机默认硬件SPI引脚,只需要在SPCTL中使能即可,不需程序中定义
//sbit SDI = P2^3; 液晶SDI引脚,主机写到液晶,接单片机MOSI引脚P1.5
//sbit SCL = P2^5; 液晶SCL时钟引脚,接单片机SCLK时钟引脚P1.7
#define red 0xf800 //定义红色
#define blue 0x001f //定义蓝色
#define green 0x07e0 //定义绿色
#define white 0xffff //定义白色
struct typFNT_GBK16
{
char Index[2];//记录汉字的编码
uchar Msk[32];//记录汉字的字模
}typFNT_GBK16;//字表结构体，16*16的汉字库
struct typFNT_GBK16 code F16x16[]= //逐行式，顺向
{
"产",0x02,0x00,0x01,0x00,0x7f,0xfc,0x00,0x00,0x08,0x20,0x04,0x20,0x04,0x40,0x3f,0xfe, /* 116 */
0x20,0x00,0x20,0x00,0x20,0x00,0x20,0x00,0x20,0x00,0x40,0x00,0x40,0x00,0x80,0x00,
"全",0x01,0x00,0x01,0x00,0x02,0x80,0x04,0x40,0x08,0x20,0x10,0x10,0x2f,0xe8,0xc1,0x06, /* 129 */
0x01,0x00,0x01,0x00,0x1f,0xf0,0x01,0x00,0x01,0x00,0x01,0x00,0x7f,0xfc,0x00,0x00,
"面",0x00,0x00,0xff,0xfe,0x02,0x00,0x02,0x00,0x04,0x00,0x3f,0xf8,0x24,0x48,0x24,0x48, /* 130 */
0x27,0xc8,0x24,0x48,0x24,0x48,0x27,0xc8,0x24,0x48,0x24,0x48,0x3f,0xf8,0x20,0x08,
"提",0x10,0x00,0x11,0xfc,0x11,0x04,0x11,0x04,0xfd,0xfc,0x11,0x04,0x11,0x04,0x15,0xfc, /* 131 */
0x18,0x00,0x33,0xfe,0xd0,0x20,0x11,0x20,0x11,0x3c,0x11,0x20,0x52,0xa0,0x24,0x7e,
"升",0x01,0x20,0x07,0xa0,0x3c,0x20,0x04,0x20,0x04,0x20,0x04,0x20,0x04,0x20,0xff,0xfe, /* 132 */
0x04,0x20,0x04,0x20,0x04,0x20,0x08,0x20,0x08,0x20,0x10,0x20,0x20,0x20,0x40,0x20,
"新",0x10,0x00,0x08,0x04,0x7f,0x78,0x00,0x40,0x22,0x40,0x14,0x40,0xff,0x7e,0x08,0x48, /* 134 */
0x08,0x48,0x7f,0x48,0x08,0x48,0x2a,0x48,0x49,0x48,0x88,0x88,0x28,0x88,0x11,0x08,
"质",0x00,0x7c,0x3f,0xc0,0x20,0x40,0x20,0x40,0x3f,0xfe,0x20,0x40,0x20,0x40,0x27,0xfc, /* 135 */
0x24,0x04,0x24,0x44,0x24,0x44,0x24,0x44,0x24,0xb4,0x41,0x08,0x46,0x04,0x98,0x02,
"生",0x01,0x00,0x11,0x00,0x11,0x00,0x11,0x00,0x3f,0xfc,0x21,0x00,0x41,0x00,0x81,0x00, /* 136 */
0x01,0x00,0x3f,0xf8,0x01,0x00,0x01,0x00,0x01,0x00,0x01,0x00,0xff,0xfe,0x00,0x00,
"力",0x02,0x00,0x02,0x00,0x02,0x00,0x02,0x00,0x7f,0xf8,0x02,0x08,0x02,0x08,0x02,0x08, /* 137 */
0x02,0x08,0x04,0x08,0x04,0x08,0x08,0x08,0x08,0x08,0x10,0x88,0x20,0x50,0x40,0x20,
};
//函数
void Delay_us(int value)////延时函数_us
{
while (value)
value--;
}
void Delay_ms(int value)////延时函数_ms
{
while (value--){
Delay_us(999);
value--;
}
}
void SPI_Init()
{
P_SW1 = (P_SW1 & ~0x0c) | 0x04; //SPI: SS(P2.2), MOSI(P2.3), MISO(P2.4), SCLK(P2.5)
//SPI初始化
SPDAT = 0;
SPCTL = 0xd0; //设置1101,0000; SPI控制寄存器
SPSTAT = 0xc0; //标志位写1清零 （SPSTAT）SPI状态寄存器 //
}
void LCD_Writ_Bus(char a)
{ //数据写入函数 8位
C_S = 0;
SPDAT = a;//开始传输
while(!(SPSTAT&0x80)); // 等待SPIF = 1,传输完成
SPSTAT = 0xc0;
C_S = 1;
}
void transfer_command(char cmd)//8 bit
{
C_D = 0;
LCD_Writ_Bus(cmd);
}
void transfer_data(char com_data)//8 bit
{
C_D = 1;
LCD_Writ_Bus(com_data);
}
void transfer_data_16(int a)//16位数据,分两次，每次送8位
{
C_D = 1;
LCD_Writ_Bus(a>>8);
LCD_Writ_Bus(a);
}
void lcd_initial()
{
R_ESET=1;
Delay_ms(100);
R_ESET=0;
Delay_ms(200);
R_ESET=1;
Delay_ms(50);
//************* Start Initial Sequence **********//
transfer_command(0x11); //Sleep Out
Delay_ms(200);
transfer_command(0xf0); //
transfer_data(0xc3); //enable command 2 part 1
transfer_command(0xf0);
transfer_data(0x96); //enable command 2 part 2
transfer_command(0x36); //内存数据访问控制
transfer_data(0x28); //0x28横屏显示,0x48竖屏显示; 0xe8,颠倒顺序
// transfer_data(0xe8); //
transfer_command(0x3a); //16bit pixel
transfer_data(0x55);
transfer_command(0xb4);
transfer_data(0x01);
transfer_command(0xb7);
transfer_data(0xc6);
transfer_command(0xf0);
transfer_data(0x69);
Delay_ms(120);
//transfer_command(0x21); //IPS必须加这条指令
transfer_command(0x29); //Display ON
transfer_command(0x2c); // 写数据开始
}
//定义窗口坐标：开始坐标（XS,YS)以及窗口大小（x_total,y_total)
void lcd_address(int XS,int YS,int x_total,int y_total)
{
int XE,YE;
XE=XS+x_total-1;
YE=YS+y_total-1;
transfer_command(0x2a); // 设置 X 开始及结束的地址
transfer_data_16(XS); // X 开始地址(16位）
transfer_data_16(XE); // X 结束地址(16位）
transfer_command(0x2b); // 设置 Y 开始及结束的地址
transfer_data_16(YS); // Y 开始地址(16位）
transfer_data_16(YE); // Y 结束地址(16位）
transfer_command(0x2c); // 写数据开始
}
void mono_transfer_data_16(int mono_data,int font_color,int back_color)
{
int i;
for(i=0;i<8;i++)
{
if(mono_data&0x80)
{
transfer_data_16(font_color); //当数据是1时，显示字体颜色
}
else
{
transfer_data_16(back_color); //当数据是0时，显示底色
}
mono_data<<=1;
}
}
//全屏显示一种颜色
void display_color(uint color_data)
{
int i,j;
lcd_address(0,0,480,320);
for(i=0;i<480;i++)
{
for(j=0;j<320;j++)
{
transfer_data_16(color_data);
}
}
}
// //显示结构体字库的16x16纯汉字
void display_hanzi_16x16(int x,int y,uchar *text,int font_color,int back_color)
{
uint j,k,m;// i,
uint address;
uint WordNum;//记录字表的字数
j = 0;
WordNum=sizeof(F16x16)/sizeof(typFNT_GBK16);//算出数组汉字的数量
while(text[j]>128) // >0x7f即说明不是 ASCII 码字符 //'\0' 字符串结束标志
{
address = 1;
for(m=0;m<WordNum;m++)//遍历查表，寻出字模
{
if((F16x16[m].Index[0]==*(text))&&(F16x16[m].Index[1]==*(text+1)))//Index[0]指汉字的GBK编码的低8位，Index[1]是高8位
{
address = j * 16;
break;
}
}
if(address != 1)// 显示汉字
{
lcd_address(x,y,16,16);
for(k = 0; k <32; k++)
{
mono_transfer_data_16(F16x16[m].Msk[k],font_color,back_color);
address++;
}
text+=2;
}
else //显示空白字符
{
lcd_address(x,y,16,16);
for(k = 0; k < 32; k++)
{
mono_transfer_data_16(0x00,font_color,back_color);
}
text+=2;
}
x=x+16;
if(x > 480-16)
{
x=0;
y+=18;
}
}
}
void main(void)
{
P0M0=0; P0M1=0; P1M0=0; P1M1=0;P2M0=0x00; P2M1=0x00;
SPI_Init();//
lcd_initial();
display_color(blue);
while(1)
{
display_hanzi_16x16(58, 6,"全面提升新质生产力", white, blue);
}
}
作者:
coody_sz
时间:
2025-4-12 14:19
STC论坛有例子的，都能读FLASH送TFT刷视频了。
作者:
大石头
时间:
2025-4-13 08:51
coody_sz 发表于 2025-4-12 14:19
STC论坛有例子的，都能读FLASH送TFT刷视频了。
谢谢指路。
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