STM32F103ZET6驱动的ST7735s一直出现白屏是为啥呢？怎么解决？

4773 STM32F103ZET6 STMCU

问答对人有帮助，内容完整，我也想知道答案 0 STM32F103ZET6驱动的ST7735s一直出现白屏是为啥呢？怎么解决？ 0
2022-2-21 07:25:38　　评论淘帖0 邀请回答您可以邀请以下用户，快速回答问题 × heks 该类别下有 20 个回答。邀请回答新星之火12138 该类别下有 18 个回答。邀请回答 wang21cj 该类别下有 17 个回答。邀请回答 hgimtk 该类别下有 16 个回答。邀请回答科源机电该类别下有 15 个回答。邀请回答 liutiefu 该类别下有 15 个回答。邀请回答 kghfh 该类别下有 14 个回答。邀请回答 chm5 该类别下有 13 个回答。邀请回答 dgfdf 该类别下有 13 个回答。邀请回答 723662364d 该类别下有 13 个回答。邀请回答一巷清苑该类别下有 13 个回答。邀请回答 hjhdf 该类别下有 12 个回答。邀请回答 efwedfd 该类别下有 12 个回答。邀请回答小华同学该类别下有 12 个回答。邀请回答 jsqueh 该类别下有 12 个回答。邀请回答红旧衫该类别下有 12 个回答。邀请回答早知该类别下有 12 个回答。邀请回答 Ehunt 该类别下有 12 个回答。邀请回答 hy381 该类别下有 12 个回答。邀请回答张峰9998 该类别下有 12 个回答。邀请回答举报李皓圳相关推荐 • 怎样用GD32F103ZET6替换STM32F103ZET6芯片呢 4698 • 如何去实现一种基于STM32F103ZET6设计的简易示波器呢 1698 • 如何去实现一种基于STM32F103ZET6的LED BEEP KEY驱动？ 1014 • STM32F103ZET6芯片具有哪些特点 5195 • 怎样去解决STM32F103ZET6库函数程序移植的Delay函数异常问题 1352 • STM32F103ZET6之独立看门狗实验 1090 • STM32F103ZET6 IIC总线在主机端一直报BUSY 3100 • SPI时序的程序代码实现 970 • stm32f103zet6与stm32f103vct6有何不同 3394 • stm32f103zet6与stm32f407zg是怎样进行spi通信的 1078 1个回答

答案对人有帮助，有参考价值 0 我看网上的都不全，这次我给大家发个全的我查了好多资料，感觉没有什么问题毕竟写个SPI时序就能打点可他就是不显示我打的点一直白屏跪求大佬帮我看看感谢至极一、这是tft.c文件 #include “tft.h” #include “sys.h” #include “delay.h” #include “stm32f10x.h” #include “spi.h” //向SPI写一个8位数据 //u8 SPI2_WriteData(u8 qq) //{ // unsigned char i=0; // LCD_CS_SET; delay_us(20); // for(i=8;i>0;i–) // { // // if(qq&0x80) // LCD_SDA=1; //数据线拉高，输出数据 // else LCD_SDA=0; // LCD_SCL=0; // LCD_SCL=1; // qq<<=1; // } //} void Lcd_WriteIndex(u8 Index) //写命令 { u8 i=8; LCD_CS=0; LCD_RS=0; LCD_SCL=0; while(i--) { if(Index&0x80){LCD_SDA=1;} else{LCD_SDA=0;} LCD_SCL=1; LCD_SCL=0; Index<<=1; } LCD_CS=1; } void Lcd_WriteData(u8 aa) //写数据 { // LCD_CS=0; //CLR是低电平 // LCD_RS=1; //SET是高电平 // SPI2_WriteData(aa); // LCD_CS=1; u8 i=8; LCD_CS=0; LCD_RS=1; LCD_SCL=0; while(i--) { if(aa&0x80){LCD_SDA=1;} else{LCD_SDA=0;} LCD_SCL=1; LCD_SCL=0; aa<<=1; } LCD_CS=1; } //向液晶屏写一个16位数据 void Lcd_WriteData_16Bit(u16 dd) { LCD_CS=0; LCD_RS=1; SPI2_WriteData(dd>>8); //写入高8位数据 SPI2_WriteData(dd); //写入低8位数据 LCD_CS=1; } //复位 void Lcd_Reset(void) { LCD_RST=0; delay_ms(100); LCD_RST=1; delay_ms(100); } /*********************************************** 设置lcd显示区域，在此区域写点数据自动换行 ****************************/ void Lcd_SetRegion(u16 x_start,u16 y_start,u16 x_end,u16 y_end) { Lcd_WriteIndex(0x2a); Lcd_WriteData(0x00); Lcd_WriteData(x_start+2); Lcd_WriteData(0x00); Lcd_WriteData(x_end+2); Lcd_WriteIndex(0x2b); Lcd_WriteData(0x00); Lcd_WriteData(y_start+1); Lcd_WriteData(0x00); Lcd_WriteData(y_end+1); Lcd_WriteIndex(0x2c); } //------------------------------------------------------------------------------------------------------------------- // @brief 液晶初始化 // @return void // @since v1.0 // Sample usage: //------------------------------------------------------------------------------------------------------------------- void lcd_init(void) { Lcd_Reset(); //Reset before LCD Init. delay_ms(10); Lcd_WriteIndex(0x11); delay_ms(120); Lcd_WriteIndex(0xB1); Lcd_WriteData(0x01); Lcd_WriteData(0x2C); Lcd_WriteData(0x2D); Lcd_WriteIndex(0xB2); Lcd_WriteData(0x01); Lcd_WriteData(0x2C); Lcd_WriteData(0x2D); Lcd_WriteIndex(0xB3); Lcd_WriteData(0x01); Lcd_WriteData(0x2C); Lcd_WriteData(0x2D); Lcd_WriteData(0x01); Lcd_WriteData(0x2C); Lcd_WriteData(0x2D); Lcd_WriteIndex(0xB4); Lcd_WriteData(0x07); Lcd_WriteIndex(0xC0); Lcd_WriteData(0xA2); Lcd_WriteData(0x02); Lcd_WriteData(0x84); Lcd_WriteIndex(0xC1); Lcd_WriteData(0xC5); Lcd_WriteIndex(0xC2); Lcd_WriteData(0x0A); Lcd_WriteData(0x00); Lcd_WriteIndex(0xC3); Lcd_WriteData(0x8A); Lcd_WriteData(0x2A); Lcd_WriteIndex(0xC4); Lcd_WriteData(0x8A); Lcd_WriteData(0xEE); Lcd_WriteIndex(0xC5); Lcd_WriteData(0x0E); Lcd_WriteIndex(0x36); // switch(TFT_DISPLAY_DIR)//y x v // { // case 0: Lcd_WriteData(1<<7 \| 1<<6 \| 0<<5); break; //竖屏模式 // case 1: Lcd_WriteData(0<<7 \| 0<<6 \| 0<<5); break; //竖屏模式旋转180 // case 2: Lcd_WriteData(1<<7 \| 0<<6 \| 1<<5); break; //横屏模式 // case 3: Lcd_WriteData(0<<7 \| 1<<6 \| 1<<5); break; //横屏模式旋转180 // } Lcd_WriteIndex(0xe0); Lcd_WriteData(0x0f); Lcd_WriteData(0x1a); Lcd_WriteData(0x0f); Lcd_WriteData(0x18); Lcd_WriteData(0x2f); Lcd_WriteData(0x28); Lcd_WriteData(0x20); Lcd_WriteData(0x22); Lcd_WriteData(0x1f); Lcd_WriteData(0x1b); Lcd_WriteData(0x23); Lcd_WriteData(0x37); Lcd_WriteData(0x00); Lcd_WriteData(0x07); Lcd_WriteData(0x02); Lcd_WriteData(0x10); Lcd_WriteIndex(0xe1); Lcd_WriteData(0x0f); Lcd_WriteData(0x1b); Lcd_WriteData(0x0f); Lcd_WriteData(0x17); Lcd_WriteData(0x33); Lcd_WriteData(0x2c); Lcd_WriteData(0x29); Lcd_WriteData(0x2e); Lcd_WriteData(0x30); Lcd_WriteData(0x30); Lcd_WriteData(0x39); Lcd_WriteData(0x3f); Lcd_WriteData(0x00); Lcd_WriteData(0x07); Lcd_WriteData(0x03); Lcd_WriteData(0x10); Lcd_WriteIndex(0x2a); Lcd_WriteData(0x00); Lcd_WriteData(0x00+2); Lcd_WriteData(0x00); Lcd_WriteData(0x80+2); Lcd_WriteIndex(0x2b); Lcd_WriteData(0x00); Lcd_WriteData(0x00+3); Lcd_WriteData(0x00); Lcd_WriteData(0x80+3); Lcd_WriteIndex(0xF0); Lcd_WriteData(0x01); Lcd_WriteIndex(0xF6); Lcd_WriteData(0x00); Lcd_WriteIndex(0x3A); Lcd_WriteData(0x05); Lcd_WriteIndex(0x29); dsp_single_colour(BLACK); } //设置整个屏幕的颜色 void dsp_single_colour(int color) { u8 i,j; Lcd_SetRegion(0,0,128-1,128-1); for (i=0;i<127;i++) for (j=0;j<127;j++) Lcd_WriteData_16Bit(color); } //画点 void lcd_drawpoint(u16 x,u16 y,u16 color) { Lcd_SetRegion(x,y,x,y); Lcd_WriteData_16Bit(color); } void Lcd_WriteReg(u8 Cmd,u8 Data) { Lcd_WriteIndex(Cmd); Lcd_WriteData(Data); } 二、tft.h文件 #ifndef _TFT_H #define _TFT_H #include “stm32f10x.h” #include “spi.h” //-------常用颜色---------- #define RED 0XF800 //红色 #define GREEN 0X07E0 //绿色 #define BLUE 0X001F //蓝色 #define BRED 0XF81F #define GRED 0XFFE0 //灰色 #define GBLUE 0X07FF // #define BLACK 0X0000 //黑色 #define WHITE 0XFFFF //白色 #define YELLOW 0xFFE0 //黄色 //#define LCD_CTRLA GPIOA //定义TFT数据端口 //#define LCD_CTRLB GPIOB //定义TFT数据端口 //PA4 PA5 PA7 //#define LCD_SCL GPIO_Pin_13 //PB13—>>TFT --SCL/SCK //#define LCD_SDA GPIO_Pin_15 //PB15 MOSI—>>TFT --SDA/DIN //#define LCD_CS GPIO_Pin_4 //MCU_PB11—>>TFT --CS/CE PB10 PB1 PB0 //#define LCD_LED GPIO_Pin_10 //MCU_PB9—>>TFT --BL //#define LCD_RS GPIO_Pin_1 //PB11—>>TFT --RS/DC DC数据命令位 //#define LCD_RST GPIO_Pin_0 //PB10—>>TFT --RST //#define LCD_CS_SET(x) LCD_CTRL->ODR=(LCD_CTRL->ODR&~LCD_CS)\|(x ? LCD_CS:0) #define LCD_SCL PBout(13) #define LCD_SDA PBout(15) #define LCD_CS PAout(4) //片选 #define LCD_RS PBout(1) //时钟/数据 #define LCD_RST PBout(0) 液晶控制口置1操作语句宏定义 //#define LCD_SCL_SET LCD_CTRLB->BSRR=LCD_SCL //#define LCD_SDA_SET LCD_CTRLB->BSRR=LCD_SDA //#define LCD_CS_SET LCD_CTRLA->BSRR=LCD_CS // //#define LCD_LED_SET LCD_CTRLB->BSRR=LCD_LED //#define LCD_RS_SET LCD_CTRLB->BSRR=LCD_RS //#define LCD_RST_SET LCD_CTRLB->BSRR=LCD_RST 液晶控制口置0操作语句宏定义 //#define LCD_SCL_CLR LCD_CTRLA->BRR=LCD_SCL //#define LCD_SDA_CLR LCD_CTRLA->BRR=LCD_SDA //#define LCD_CS_CLR LCD_CTRLA->BRR=LCD_CS // //#define LCD_LED_CLR LCD_CTRLB->BRR=LCD_LED //#define LCD_RST_CLR LCD_CTRLB->BRR=LCD_RST //#define LCD_RS_CLR LCD_CTRLB->BRR=LCD_RS //#define LCD_DATAOUT(x) LCD_DATA->ODR=x; //数据输出 //#define LCD_DATAIN LCD_DATA->IDR; //数据输入 u8 SPI2_WriteData(u8 qq); void Lcd_WriteIndex(u8 Index); void Lcd_WriteData(u8 aa); void Lcd_WriteData_16Bit(u16 dd); void Lcd_Reset(void); void Lcd_SetRegion(u16 x_start,u16 y_start,u16 x_end,u16 y_end); void lcd_init(void); void lcd_drawpoint(u16 x,u16 y,u16 color); void dsp_single_colour(int color); void Lcd_WriteReg(u8 Cmd,u8 Data); #endif 三、spi.c文件 #include “spi.h” #include “tft.h” #include “delay.h” //以下是SPI模块的初始化代码，配置成主机模式，访问SD Card/W25Q64/NRF24L01 //SPI口初始化 //这里针是对SPI2的初始化 //初始化IO口B12、B14、B15 void SPI2_Init(void) { GPIO_InitTypeDef GPIO_InitStructure; SPI_InitTypeDef SPI_InitStructure; RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOD\|RCC_APB2Periph_GPIOB\|RCC_APB2Periph_GPIOA\|RCC_APB2Periph_AFIO, ENABLE );//PB时钟使能 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 \|GPIO_Pin_15\|GPIO_Pin_10 \| GPIO_Pin_0 \| GPIO_Pin_1;//GPIO_Pin_13 \| GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //PB13/14/15复用推挽输出 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化GPIOB // GPIO_SetBits(GPIOB,GPIO_Pin_13 \|GPIO_Pin_15\|GPIO_Pin_10 \| GPIO_Pin_0 \| GPIO_Pin_1); //PB13/14/15上拉//GPIO_Pin_13\| GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4\|GPIO_Pin_13 \|GPIO_Pin_15;//GPIO_Pin_13 \| GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //PB13/14/15复用推挽输出 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOA, &GPIO_InitStructure);//初始化GPIOB GPIO_SetBits(GPIOA,GPIO_Pin_4); //PB13/14/15上拉//GPIO_Pin_13\| GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 \|GPIO_Pin_15\|GPIO_Pin_10 \| GPIO_Pin_0 \| GPIO_Pin_1;//GPIO_Pin_13 \| GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //PB13/14/15复用推挽输出 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOD, &GPIO_InitStructure);//初始化GPIOB GPIO_SetBits(GPIOD,GPIO_Pin_13 \|GPIO_Pin_15\|GPIO_Pin_10 \| GPIO_Pin_0 \| GPIO_Pin_1); //PB13/14/15上拉//GPIO_Pin_13\| RCC_APB1PeriphClockCmd( RCC_APB1Periph_SPI2, ENABLE );//SPI2时钟使能 SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex; //设置SPI单向或者双向的数据模式:SPI设置为双线双向全双工 SPI_InitStructure.SPI_Mode = SPI_Mode_Master; //设置SPI工作模式:设置为主SPI SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b; //设置SPI的数据大小:SPI发送接收8位帧结构 SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low; //串行同步时钟的空闲状态为低电平 SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge; //串行同步时钟的第1个跳变沿（上升或下降）数据被采样 SPI_InitStructure.SPI_NSS = SPI_NSS_Soft; //NSS信号由硬件（NSS管脚）还是软件（使用SSI位）管理:内部NSS信号有SSI位控制 SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_256; //定义波特率预分频的值:波特率预分频值为256 SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB; //指定数据传输从MSB位还是LSB位开始:数据传输从MSB位开始 SPI_InitStructure.SPI_CRCPolynomial = 7; //CRC值计算的多项式 SPI_Init(SPI2, &SPI_InitStructure); //根据SPI_InitStruct中指定的参数初始化外设SPIx寄存器 SPI_Cmd(SPI2, ENABLE); //使能SPI外设 SPI2_WriteData(0xFF);//启动传输 } SPIx 读写一个字节 TxData:要写入的字节返回值:读取到的字节 //u8 SPI2_WriteData(u8 TxData) //{ // u8 retry=0; // // while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET) //检查指定的SPI标志位设置与否:发送缓存空标志位 // { // retry++; // if(retry>200)return 0; // } // // SPI_I2S_SendData(SPI2, TxData); //通过外设SPIx发送一个数据 // // retry=0; // // while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET) //检查指定的SPI标志位设置与否:接受缓存非空标志位 // { // // retry++; // // if(retry>200)return 0; // } // // return SPI_I2S_ReceiveData(SPI2); //返回通过SPIx最近接收的数据 //} uint8_t SPI2_WriteData(u8 byte) { while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET); SPI_I2S_SendData(SPI2,byte); while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET); return SPI_I2S_ReceiveData(SPI2); } 向SPI写一个8位数据 //u8 SPI2_WriteData(u8 Data) //{ // unsigned char i=0; // LCD_CS_SET; delay_us(20); // for(i=8;i>0;i–) // { // // if(Data&0x80) // // LCD_SDA=1; //数据线拉高，输出数据 // else LCD_SDA=0; // // delay_us(20); // LCD_SCL=0; delay_us(20); // // LCD_SCL=1; // Data<<=1; // } //} 四、spi.h文件 #ifndef __SPI_H #define __SPI_H #include “sys.h” void SPI2_Init(void); //初始化SPI口 //u8 SPI2_WriteData(u8 Data); uint8_t SPI2_WriteData(u8 byte); #endif 五、主函数 #include “stm32f10x.h” #include “spi.h” #include “tft.h” #include “delay.h” #include “usart.h” #include “key.h” int main(void) { delay_init(); SPI2_Init(); Lcd_Reset(); uart_init(9600); NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); KEY_Init(); lcd_init(); lcd_drawpoint(10,10,BLACK); lcd_drawpoint(12,10,BLACK); while(1) { lcd_drawpoint(13,10,BLACK); lcd_drawpoint(14,10,BLACK); lcd_drawpoint(15,10,BLACK); Lcd_WriteData(0xfe); if(!KEY0) { // dsp_single_colour(GREEN); Lcd_WriteData(0xfe); Lcd_WriteData(1); Lcd_WriteData(1); Lcd_WriteData(1); Lcd_WriteData(1); Lcd_WriteData(1); Lcd_WriteData(1); printf(“222”); delay_ms(50); } } }

2022-2-21 11:08:40 评论举报王盼盼