【瑞萨BLE/WIFI模块测评】+ SPI驱动LCD屏
测试开发板的SPI输出，驱动LCD。一、硬件电路
使用SCI2配置为SPI的引脚和LCD的其他控制引脚。
二、软件配置
2.1、配置SCI2的SPI端口
2.2、配置SPI参数
三、软件部分
3.1、fun_spi.c
#include "hal_data.h"
#include "spi/fun_spi.h"
volatile bool g_transfer_complete = false;
void sci_spi_callback(spi_callback_args_t *p_args)
{
if(p_args->event == SPI_EVENT_TRANSFER_COMPLETE)
{
g_transfer_complete = true;
}
}
void sci_spi_init(void)
{
fsp_err_t err = R_SCI_SPI_Open(&g_spi0_ctrl, &g_spi0_cfg);
assert(FSP_SUCCESS == err);
}
bool SPIWaitgtc(void)
{
unsigned short wTimeout = 100;
while(!g_transfer_complete && wTimeout)
{
R_BSP_SoftwareDelay(1u, BSP_DELAY_UNITS_MICROSECONDS);
wTimeout--;
}
g_transfer_complete = false;
if(g_transfer_complete==false && wTimeout==0)
return false;
return true;
}
3.2、fun_st7735s.c
#include "hal_data.h"
#include "systick/bsp_systick.h"
#include "spi/fun_spi.h"
#include "lcd/st7735s/fun_st7735s.h"
void lcd_writebyte(uint8_t dat)
{
lcd_st7735s_cs_l();
R_SCI_SPI_Write(&g_spi0_ctrl,&dat,1,SPI_BIT_WIDTH_8_BITS);
SPIWaitgtc();
lcd_st7735s_cs_h();
}
void lcd_st7735s_write_dat8(uint8_t dat)
{
lcd_writebyte(dat);
}
void lcd_st7735s_write_dat16(uint16_t dat)
{
//lcd_st7735s_cs_l();
lcd_writebyte(dat>>8);
lcd_writebyte(dat);
//lcd_st7735s_cs_h();
}
void lcd_st7735s_write_dat(uint8_t cmd)
{
uint8_t i=0;
lcd_st7735s_cs_l();
lcd_writebyte(cmd);
lcd_st7735s_cs_h();
}
void lcd_st7735s_write_reg(uint8_t reg)
{
lcd_st7735s_rs_l(); //写命令
lcd_writebyte(reg);
lcd_st7735s_rs_h(); //写数据
}
void lcd_st7735s_write_cmd(uint8_t cmd)
{
uint8_t i=0;
lcd_st7735s_cs_l();
lcd_st7735s_rs_l();
lcd_writebyte(cmd);
}
//设置起始和结束地址
void lcd_address_set(uint16_t x1,uint16_t y1,uint16_t x2,uint16_t y2)
{
if(USE_HORIZONTAL==0)
{
lcd_st7735s_write_reg(0x2a);//列地址设置
lcd_st7735s_write_dat16(x1+2);
lcd_st7735s_write_dat16(x2+2);
lcd_st7735s_write_reg(0x2b);//行地址设置
lcd_st7735s_write_dat16(y1+1);
lcd_st7735s_write_dat16(y2+1);
lcd_st7735s_write_reg(0x2c);//储存器写
}
else if(USE_HORIZONTAL==1)
{
lcd_st7735s_write_reg(0x2a);//列地址设置
lcd_st7735s_write_dat16(x1+2);
lcd_st7735s_write_dat16(x2+2);
lcd_st7735s_write_reg(0x2b);//行地址设置
lcd_st7735s_write_dat16(y1+1);
lcd_st7735s_write_dat16(y2+1);
lcd_st7735s_write_reg(0x2c);//储存器写
}
else if(USE_HORIZONTAL==2)
{
lcd_st7735s_write_reg(0x2a);//列地址设置
lcd_st7735s_write_dat16(x1+1);
lcd_st7735s_write_dat16(x2+1);
lcd_st7735s_write_reg(0x2b);//行地址设置
lcd_st7735s_write_dat16(y1+2);
lcd_st7735s_write_dat16(y2+2);
lcd_st7735s_write_reg(0x2c);//储存器写
}
else
{
lcd_st7735s_write_reg(0x2a);//列地址设置
lcd_st7735s_write_dat16(x1+1);
lcd_st7735s_write_dat16(x2+1);
lcd_st7735s_write_reg(0x2b);//行地址设置
lcd_st7735s_write_dat16(y1+2);
lcd_st7735s_write_dat16(y2+2);
lcd_st7735s_write_reg(0x2c);//储存器写
}
}
void init_lcd_st7735s(void)
{
//init_lcd_st7735s_pins();
//lcd_init_spi();
lcd_st7735s_cs_h();
lcd_st7735s_rst_l();
SysTick_Delay_Ms(100);
lcd_st7735s_rst_h();
SysTick_Delay_Ms(100);
//************* Start Initial Sequence **********//
lcd_st7735s_write_reg(0x11); //Sleep out
SysTick_Delay_Ms(120); //Delay 120ms
//------------------------------------ST7735S Frame Rate-----------------------------------------//
lcd_st7735s_write_reg(0xB1);
lcd_st7735s_write_dat8(0x05);
lcd_st7735s_write_dat8(0x3C);
lcd_st7735s_write_dat8(0x3C);
lcd_st7735s_write_reg(0xB2);
lcd_st7735s_write_dat8(0x05);
lcd_st7735s_write_dat8(0x3C);
lcd_st7735s_write_dat8(0x3C);
lcd_st7735s_write_reg(0xB3);
lcd_st7735s_write_dat8(0x05);
lcd_st7735s_write_dat8(0x3C);
lcd_st7735s_write_dat8(0x3C);
lcd_st7735s_write_dat8(0x05);
lcd_st7735s_write_dat8(0x3C);
lcd_st7735s_write_dat8(0x3C);
//------------------------------------End ST7735S Frame Rate---------------------------------//
lcd_st7735s_write_reg(0xB4); //Dot inversion
lcd_st7735s_write_dat8(0x03);
//------------------------------------ST7735S Power Sequence---------------------------------//
lcd_st7735s_write_reg(0xC0);
lcd_st7735s_write_dat8(0x28);
lcd_st7735s_write_dat8(0x08);
lcd_st7735s_write_dat8(0x04);
lcd_st7735s_write_reg(0xC1);
lcd_st7735s_write_dat8(0XC0);
lcd_st7735s_write_reg(0xC2);
lcd_st7735s_write_dat8(0x0D);
lcd_st7735s_write_dat8(0x00);
lcd_st7735s_write_reg(0xC3);
lcd_st7735s_write_dat8(0x8D);
lcd_st7735s_write_dat8(0x2A);
lcd_st7735s_write_reg(0xC4);
lcd_st7735s_write_dat8(0x8D);
lcd_st7735s_write_dat8(0xEE);
//---------------------------------End ST7735S Power Sequence-------------------------------------//
lcd_st7735s_write_reg(0xC5); //VCOM
lcd_st7735s_write_dat8(0x1A);
lcd_st7735s_write_reg(0x36); //MX, MY, RGB mode
if(USE_HORIZONTAL==0)lcd_st7735s_write_dat8(0x00);
else if(USE_HORIZONTAL==1)lcd_st7735s_write_dat8(0xC0);
else if(USE_HORIZONTAL==2)lcd_st7735s_write_dat8(0x70);
else lcd_st7735s_write_dat8(0xA0);
//------------------------------------ST7735S Gamma Sequence---------------------------------//
lcd_st7735s_write_reg(0xE0);
lcd_st7735s_write_dat8(0x04);
lcd_st7735s_write_dat8(0x22);
lcd_st7735s_write_dat8(0x07);
lcd_st7735s_write_dat8(0x0A);
lcd_st7735s_write_dat8(0x2E);
lcd_st7735s_write_dat8(0x30);
lcd_st7735s_write_dat8(0x25);
lcd_st7735s_write_dat8(0x2A);
lcd_st7735s_write_dat8(0x28);
lcd_st7735s_write_dat8(0x26);
lcd_st7735s_write_dat8(0x2E);
lcd_st7735s_write_dat8(0x3A);
lcd_st7735s_write_dat8(0x00);
lcd_st7735s_write_dat8(0x01);
lcd_st7735s_write_dat8(0x03);
lcd_st7735s_write_dat8(0x13);
lcd_st7735s_write_reg(0xE1);
lcd_st7735s_write_dat8(0x04);
lcd_st7735s_write_dat8(0x16);
lcd_st7735s_write_dat8(0x06);
lcd_st7735s_write_dat8(0x0D);
lcd_st7735s_write_dat8(0x2D);
lcd_st7735s_write_dat8(0x26);
lcd_st7735s_write_dat8(0x23);
lcd_st7735s_write_dat8(0x27);
lcd_st7735s_write_dat8(0x27);
lcd_st7735s_write_dat8(0x25);
lcd_st7735s_write_dat8(0x2D);
lcd_st7735s_write_dat8(0x3B);
lcd_st7735s_write_dat8(0x00);
lcd_st7735s_write_dat8(0x01);
lcd_st7735s_write_dat8(0x04);
lcd_st7735s_write_dat8(0x13);
//------------------------------------End ST7735S Gamma Sequence-----------------------------//
lcd_st7735s_write_reg(0x3A); //65k mode
lcd_st7735s_write_dat8(0x05);
lcd_st7735s_write_reg(0x29); //Display on
}
3.3、fun_lcd.c
#include "hal_data.h"
#include "lcd/st7735s/fun_st7735s.h"
#include "lcd/st7735s/lcdfont.h"
void LCD_Fill(uint16_t xsta,uint16_t ysta,uint16_t xend,uint16_t yend,uint16_t color)
{
uint16_t i,j;
lcd_address_set(xsta,ysta,xend-1,yend-1);
for(i=ysta;i<yend;i++)
{
for(j=xsta;j<xend;j++)
{
lcd_st7735s_write_dat16(color);
}
}
}
void LCD_DrawPoint(uint16_t x,uint16_t y,uint16_t color)
{
lcd_address_set(x,y,x,y); //设置光标位置
lcd_st7735s_write_dat16(color);
}
void LCD_DrawLine(uint16_t x1,uint16_t y1,uint16_t x2,uint16_t y2,uint16_t color)
{
uint16_t t;
int xerr=0,yerr=0,delta_x,delta_y,distance;
int incx,incy,uRow,uCol;
delta_x=x2-x1; //计算坐标增量
delta_y=y2-y1;
uRow=x1;//画线起点坐标
uCol=y1;
if(delta_x>0)incx=1; //设置单步方向
else if (delta_x==0)incx=0;//垂直线
else {incx=-1;delta_x=-delta_x;}
if(delta_y>0)incy=1;
else if (delta_y==0)incy=0;//水平线
else {incy=-1;delta_y=-delta_y;}
if(delta_x>delta_y)distance=delta_x; //选取基本增量坐标轴
else distance=delta_y;
for(t=0;t<distance+1;t++)
{
LCD_DrawPoint(uRow,uCol,color);//画点
xerr+=delta_x;
yerr+=delta_y;
if(xerr>distance)
{
xerr-=distance;
uRow+=incx;
}
if(yerr>distance)
{
yerr-=distance;
uCol+=incy;
}
}
}
void LCD_DrawRectangle(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2,uint16_t color)
{
LCD_DrawLine(x1,y1,x2,y1,color);
LCD_DrawLine(x1,y1,x1,y2,color);
LCD_DrawLine(x1,y2,x2,y2,color);
LCD_DrawLine(x2,y1,x2,y2,color);
}
void Draw_Circle(uint16_t x0,uint16_t y0,uint8_t r,uint16_t color)
{
int a,b;
a=0;b=r;
while(a<=b)
{
LCD_DrawPoint(x0-b,y0-a,color); //3
LCD_DrawPoint(x0+b,y0-a,color); //0
LCD_DrawPoint(x0-a,y0+b,color); //1
LCD_DrawPoint(x0-a,y0-b,color); //2
LCD_DrawPoint(x0+b,y0+a,color); //4
LCD_DrawPoint(x0+a,y0-b,color); //5
LCD_DrawPoint(x0+a,y0+b,color); //6
LCD_DrawPoint(x0-b,y0+a,color); //7
a++;
if((a*a+b*b)>(r*r))//判断要画的点是否过远
{
b--;
}
}
}
void LCD_ShowChinese12x12(uint16_t x,uint16_t y,uint8_t *s,uint16_t fc,uint16_t bc,uint8_t sizey,uint8_t mode)
{
uint8_t i,j,m=0;
uint16_t k;
uint16_t HZnum;//汉字数目
uint16_t TypefaceNum;//一个字符所占字节大小
uint16_t x0=x;
TypefaceNum=(sizey/8+((sizey%8)?1:0))*sizey;
HZnum=sizeof(tfont12)/sizeof(typFNT_GB12); //统计汉字数目
for(k=0;k<HZnum;k++)
{
if((tfont12.Index==*(s))&&(tfont12.Index==*(s+1)))
{
lcd_address_set(x,y,x+sizey-1,y+sizey-1);
for(i=0;i<TypefaceNum;i++)
{
for(j=0;j<8;j++)
{
if(!mode)//非叠加方式
{
if(tfont12.Msk&(0x01<<j))lcd_st7735s_write_dat16(fc);
else lcd_st7735s_write_dat16(bc);
m++;
if(m%sizey==0)
{
m=0;
break;
}
}
else//叠加方式
{
if(tfont12.Msk&(0x01<<j)) LCD_DrawPoint(x,y,fc);//画一个点
x++;
if((x-x0)==sizey)
{
x=x0;
y++;
break;
}
}
}
}
}
continue;//查找到对应点阵字库立即退出，防止多个汉字重复取模带来影响
}
}
void LCD_ShowChinese16x16(uint16_t x,uint16_t y,uint8_t *s,uint16_t fc,uint16_t bc,uint8_t sizey,uint8_t mode)
{
uint8_t i,j,m=0;
uint16_t k;
uint16_t HZnum;//汉字数目
uint16_t TypefaceNum;//一个字符所占字节大小
uint16_t x0=x;
TypefaceNum=(sizey/8+((sizey%8)?1:0))*sizey;
HZnum=sizeof(tfont16)/sizeof(typFNT_GB16); //统计汉字数目
for(k=0;k<HZnum;k++)
{
if ((tfont16.Index==*(s))&&(tfont16.Index==*(s+1)))
{
lcd_address_set(x,y,x+sizey-1,y+sizey-1);
for(i=0;i<TypefaceNum;i++)
{
for(j=0;j<8;j++)
{
if(!mode)//非叠加方式
{
if(tfont16.Msk&(0x01<<j))lcd_st7735s_write_dat16(fc);
else lcd_st7735s_write_dat16(bc);
m++;
if(m%sizey==0)
{
m=0;
break;
}
}
else//叠加方式
{
if(tfont16.Msk&(0x01<<j)) LCD_DrawPoint(x,y,fc);//画一个点
x++;
if((x-x0)==sizey)
{
x=x0;
y++;
break;
}
}
}
}
}
continue;//查找到对应点阵字库立即退出，防止多个汉字重复取模带来影响
}
}
void LCD_ShowChinese24x24(uint16_t x,uint16_t y,uint8_t *s,uint16_t fc,uint16_t bc,uint8_t sizey,uint8_t mode)
{
uint8_t i,j,m=0;
uint16_t k;
uint16_t HZnum;//汉字数目
uint16_t TypefaceNum;//一个字符所占字节大小
uint16_t x0=x;
TypefaceNum=(sizey/8+((sizey%8)?1:0))*sizey;
HZnum=sizeof(tfont24)/sizeof(typFNT_GB24); //统计汉字数目
for(k=0;k<HZnum;k++)
{
if ((tfont24.Index==*(s))&&(tfont24.Index==*(s+1)))
{
lcd_address_set(x,y,x+sizey-1,y+sizey-1);
for(i=0;i<TypefaceNum;i++)
{
for(j=0;j<8;j++)
{
if(!mode)//非叠加方式
{
if(tfont24.Msk&(0x01<<j))lcd_st7735s_write_dat16(fc);
else lcd_st7735s_write_dat16(bc);
m++;
if(m%sizey==0)
{
m=0;
break;
}
}
else//叠加方式
{
if(tfont24.Msk&(0x01<<j)) LCD_DrawPoint(x,y,fc);//画一个点
x++;
if((x-x0)==sizey)
{
x=x0;
y++;
break;
}
}
}
}
}
continue;//查找到对应点阵字库立即退出，防止多个汉字重复取模带来影响
}
}
void LCD_ShowChinese32x32(uint16_t x,uint16_t y,uint8_t *s,uint16_t fc,uint16_t bc,uint8_t sizey,uint8_t mode)
{
uint8_t i,j,m=0;
uint16_t k;
uint16_t HZnum;//汉字数目
uint16_t TypefaceNum;//一个字符所占字节大小
uint16_t x0=x;
TypefaceNum=(sizey/8+((sizey%8)?1:0))*sizey;
HZnum=sizeof(tfont32)/sizeof(typFNT_GB32); //统计汉字数目
for(k=0;k<HZnum;k++)
{
if ((tfont32.Index==*(s))&&(tfont32.Index==*(s+1)))
{
lcd_address_set(x,y,x+sizey-1,y+sizey-1);
for(i=0;i<TypefaceNum;i++)
{
for(j=0;j<8;j++)
{
if(!mode)//非叠加方式
{
if(tfont32.Msk&(0x01<<j))lcd_st7735s_write_dat16(fc);
else lcd_st7735s_write_dat16(bc);
m++;
if(m%sizey==0)
{
m=0;
break;
}
}
else//叠加方式
{
if(tfont32.Msk&(0x01<<j)) LCD_DrawPoint(x,y,fc);//画一个点
x++;
if((x-x0)==sizey)
{
x=x0;
y++;
break;
}
}
}
}
}
continue;//查找到对应点阵字库立即退出，防止多个汉字重复取模带来影响
}
}
void LCD_ShowChinese(uint16_t x,uint16_t y,uint8_t *s,uint16_t fc,uint16_t bc,uint8_t sizey,uint8_t mode)
{
while(*s!=0)
{
if(sizey==12) LCD_ShowChinese12x12(x,y,s,fc,bc,sizey,mode);
else if(sizey==16) LCD_ShowChinese16x16(x,y,s,fc,bc,sizey,mode);
else if(sizey==24) LCD_ShowChinese24x24(x,y,s,fc,bc,sizey,mode);
else if(sizey==32) LCD_ShowChinese32x32(x,y,s,fc,bc,sizey,mode);
else return;
s+=2;
x+=sizey;
}
}
void LCD_ShowChar(uint16_t x,uint16_t y,uint8_t num,uint16_t fc,uint16_t bc,uint8_t sizey,uint8_t mode)
{
uint8_t temp,sizex,t,m=0;
uint16_t i,TypefaceNum;//一个字符所占字节大小
uint16_t x0=x;
sizex=sizey/2;
TypefaceNum=(sizex/8+((sizex%8)?1:0))*sizey;
num=num-' '; //得到偏移后的值
lcd_address_set(x,y,x+sizex-1,y+sizey-1);//设置光标位置
for(i=0;i<TypefaceNum;i++)
{
if(sizey==12)temp=ascii_1206; //调用6x12字体
else if(sizey==16)temp=ascii_1608; //调用8x16字体
else if(sizey==24)temp=ascii_2412; //调用12x24字体
else if(sizey==32)temp=ascii_3216; //调用16x32字体
else return;
for(t=0;t<8;t++)
{
if(!mode)//非叠加模式
{
if(temp&(0x01<<t))lcd_st7735s_write_dat16(fc);
else lcd_st7735s_write_dat16(bc);
m++;
if(m%sizex==0)
{
m=0;
break;
}
}
else//叠加模式
{
if(temp&(0x01<<t))LCD_DrawPoint(x,y,fc);//画一个点
x++;
if((x-x0)==sizex)
{
x=x0;
y++;
break;
}
}
}
}
}
void LCD_ShowString(uint16_t x,uint16_t y,const uint8_t *p,uint16_t fc,uint16_t bc,uint8_t sizey,uint8_t mode)
{
while(*p!='\0')
{
LCD_ShowChar(x,y,*p,fc,bc,sizey,mode);
x+=sizey/2;
p++;
}
}
uint32_t mypow(uint8_t m,uint8_t n)
{
uint32_t result=1;
while(n--)result*=m;
return result;
}
void LCD_ShowIntNum(uint16_t x,uint16_t y,uint16_t num,uint8_t len,uint16_t fc,uint16_t bc,uint8_t sizey)
{
uint8_t t,temp;
uint8_t enshow=0;
uint8_t sizex=sizey/2;
for(t=0;t<len;t++)
{
temp=(num/mypow(10,len-t-1))%10;
if(enshow==0&&t<(len-1))
{
if(temp==0)
{
LCD_ShowChar(x+t*sizex,y,' ',fc,bc,sizey,0);
continue;
}else enshow=1;
}
LCD_ShowChar(x+t*sizex,y,temp+48,fc,bc,sizey,0);
}
}
void LCD_ShowFloatNum1(uint16_t x,uint16_t y,float num,uint8_t len,uint16_t fc,uint16_t bc,uint8_t sizey)
{
uint8_t t,temp,sizex;
uint16_t num1;
sizex=sizey/2;
num1=num*100;
for(t=0;t<len;t++)
{
temp=(num1/mypow(10,len-t-1))%10;
if(t==(len-2))
{
LCD_ShowChar(x+(len-2)*sizex,y,'.',fc,bc,sizey,0);
t++;
len+=1;
}
LCD_ShowChar(x+t*sizex,y,temp+48,fc,bc,sizey,0);
}
}
//显示图片
void LCD_ShowPicture(uint16_t x,uint16_t y,uint16_t length,uint16_t width,const uint8_t pic[])
{
uint16_t i,j;
uint32_t k=0;
lcd_address_set(x,y,x+length-1,y+width-1);
for(i=0;i<length;i++)
{
for(j=0;j<width;j++)
{
lcd_st7735s_write_dat8(pic);
lcd_st7735s_write_dat8(pic);
k++;
}
}
}
四、运行结果
下载程序后，LCD显示内容
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