STM32H750VBT6 DMA驱动TFT-LCD(ST7789V)

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我是靠谱客的博主碧蓝枕头，最近开发中收集的这篇文章主要介绍STM32H750VBT6 DMA驱动TFT-LCD(ST7789V)，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

1、查阅ST7789V手册

（1）显示属性

（2）像素格式

LCD 驱动部分：

const unsigned char ord[]={0x36,0x3A,0xB2,0xB7,0xBB,0xC0,0xC2,0xC3,0xC4,0xC6,0xD0,0xE0,0xE1,0x2A,0x2B,0x29,0x2C};
const unsigned char dat[]={0x20,
                                           0x65,
                                           0x0C,0x0C,0x00,0x33,0x33,
                                           0x72,
                                           0x3D,
                                           0x2C,
                                           0x01,
0x12,
0x20,
0x0F,
0xA4,0xA1, 0xD0,0x04,0x0D,0x11,0x13,0x2B,0x3F,0x54,0x4C,0x18,0x0D,0x0B,0x1F,0x23, 0xD0,0x04,0x0C,0x11,0x13,0x2C,0x3F,0x44,0x51,0x2F,0x1F,0x1F,0x20,0x23,
0x00,0x00,0x00,0x86,
0x00,0x00,0x00,0xEF

};//数据
const unsigned char ofs[]={0,1,2,7,8,9,10,11,12,13,14,16,30,44,48,0,0};//数据偏移位置
const unsigned char num[]={1,1,5,1,1,1,1,1,1,1,2,14,14,4,4,0,0};//连续发送个数

inline static void ST7789_Config(unsigned char order,unsigned char* pData,unsigned char Size)
{
   unsigned short i=0;
   //
   SPI4->CR2 =1;
   SPI4->CR1 = SPI_CR1_SPE;

SPI4->TXDR=order;
   SPI4->CR1|=SPI_CR1_CSTART;

   //发送命令
   IO_Write(DCX,cmd);
   while(!(SPI4->SR & SPI_SR_TXC));
   SPI4->IFCR |= SPI_IFCR_EOTC+SPI_IFCR_TXTFC;
   SPI4->CR1 &=~ SPI_CR1_SPE;

   if(Size>4)
   {
       xplay->NDTR=Size;
       xplay->M0AR=(unsigned int)pData;

       SPI4->CR2 = Size;
   SPI4->CR1 = SPI_CR1_SPE;
   SPI4->CR1|=SPI_CR1_CSTART;

       IO_Write(DCX,data);//发送数据
       xplay->CR |= EN;

       //此处经验证其他非阻塞方案会影响后续初始化，此处使用堵塞等待发送完毕,此处使能了dma的FIFO,不能判断DMA是否完成了发送
       while(SPI4->CR1 & SPI_CR1_CSTART);

       DMA1->LIFCR|=(DMA1->LISR & 0x3F0000);


   }
   else if(Size>0)
   {
       SPI4->CR2 = Size;
       SPI4->CR1 = SPI_CR1_SPE;
       SPI4->CR1|= SPI_CR1_CSTART;
       SPI4->TXDR=*(unsigned int*)pData;
       IO_Write(DCX,data);//发送数据
       while(!(SPI4->SR & SPI_SR_TXC));
       //while(SPI4->CR1 & SPI_CR1_CSTART);
   }

   SPI4->CR1 &=~ SPI_CR1_SPE;
   SPI4->IFCR |= SPI_IFCR_EOTC+SPI_IFCR_TXTFC;
   //IO_Write(DCX,cmd);

}

void ST7789_Init(void)
{
   unsigned int sCR = 0;//config spi4 dma cr

   xplay->FCR = DMA_SxFCR_DMDIS|LL_DMA_FIFOTHRESHOLD_1_4;
   xplay->PAR= (unsigned int)&(SPI4->TXDR);

   ((SxCR*)&sCR)->PL=LoW;
   ((SxCR*)&sCR)->MINC=EN;
   ((SxCR*)&sCR)->PINC=DIS;
   ((SxCR*)&sCR)->CIRC=DIS;
   ((SxCR*)&sCR)->DIR=M2P;
   ((SxCR*)&sCR)->MBST=FOUR;
   ((SxCR*)&sCR)->PBST=SINGLE;
   xplay->CR = sCR;
   //发送softreset

ST7789_Config(0x01,NULL,0);//软件复位

   //需要延时130ms,由系统自动调用后续任务ST7789_SlpOut
}
__USED void ST7789_MoreInit(void)
{
   //在主循环中完成后续初始化
   unsigned char i=0,*loc=(unsigned char*)dat;
   for(i=0;i<sizeof(ord);i++)
   {
       ST7789_Config(ord[i],loc+ofs[i],num[i]);
   }

   xplay->NDTR=1000;
   xplay->M0AR=(unsigned int)gram;
   SPI4->CR2 = 1000;
   SPI4->CR1 = SPI_CR1_SPE;
   SPI4->CR1|= SPI_CR1_CSTART;
   SCB_CleanInvalidateDCache_by_Addr((unsigned int*)gram,sizeof(gram));
   IO_Write(DCX,data);//发送数据
   xplay->CR |= EN;
}