电子秤stm32程序(4)

2019-08-03 10:23

LCD_WR_DATA(y&0XFF); }else { if(lcddev.dir==1)x=lcddev.width-1-x;//横屏其实就是调转x,y坐标 LCD_WriteReg(lcddev.setxcmd,x); LCD_WriteReg(lcddev.setycmd,y); } LCD->LCD_REG=lcddev.wramcmd; LCD->LCD_RAM=color; }

//设置LCD显示方向（6804不支持横屏显示） //dir:0,竖屏；1,横屏

void LCD_Display_Dir(u8 dir) { if(dir==0)//竖屏 { lcddev.dir=0;//竖屏 lcddev.width=240; lcddev.height=320; if(lcddev.id==0X9341||lcddev.id==0X6804) { lcddev.wramcmd=0X2C; lcddev.setxcmd=0X2A; lcddev.setycmd=0X2B; if(lcddev.id==0X6804) { lcddev.width=320; lcddev.height=480; } }else if(lcddev.id==0X8989) { lcddev.wramcmd=R34; lcddev.setxcmd=0X4E; lcddev.setycmd=0X4F; }else { lcddev.wramcmd=R34; lcddev.setxcmd=R32; lcddev.setycmd=R33; } }else if(lcddev.id!=0X6804)//6804不支持横屏显示 {

lcddev.dir=1;//横屏 lcddev.width=320; lcddev.height=240; if(lcddev.id==0X9341) { lcddev.wramcmd=0X2C; lcddev.setxcmd=0X2A; lcddev.setycmd=0X2B; }else if(lcddev.id==0X8989) { lcddev.wramcmd=R34; lcddev.setxcmd=0X4F; lcddev.setycmd=0X4E; }else { lcddev.wramcmd=R34; lcddev.setxcmd=R33; lcddev.setycmd=R32; } } LCD_Scan_Dir(DFT_SCAN_DIR); //默认扫描方向 }

//初始化lcd

//该初始化函数可以初始化各种ILI93XX液晶,但是其他函数是基于ILI9320的!!! //在其他型号的驱动芯片上没有测试! void LCD_Init(void) { GPIO_InitTypeDef GPIO_InitStructure; FSMC_NORSRAMInitTypeDef FSMC_NORSRAMInitStructure; FSMC_NORSRAMTimingInitTypeDef readWriteTiming; FSMC_NORSRAMTimingInitTypeDef writeTiming;

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC,ENABLE); //使能FSMC时钟 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB|RCC_APB2Periph_GPIOD|RCC_APB2Periph_GPIOE|RCC_APB2Periph_GPIOG|RCC_APB2Periph_AFIO,ENABLE);//使能PORTB,D,E,G以及AFIO复用功能时钟

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0; //PB0 推挽输出背光 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; //推挽输出 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOB, &GPIO_InitStructure);

//PORTD复用推挽输出 GPIO_InitStructure.GPIO_Pin =

// //PORTG12复用推挽输出 A0 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_12; // //PORTD复用推挽输出

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用推挽输出 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOG, &GPIO_InitStructure); readWriteTiming.FSMC_AddressSetupTime = 0x01; //地址建立时间（ADDSET）为2个HCLK 1/36M=27ns

readWriteTiming.FSMC_AddressHoldTime = 0x00; //地址保持时间（ADDHLD）模式A未用到

readWriteTiming.FSMC_DataSetupTime = 0x0f; // 数据保存时间为16个HCLK,因为液晶驱动IC的读数据的时候，速度不能太快，尤其对1289这个IC。 readWriteTiming.FSMC_BusTurnAroundDuration = 0x00; readWriteTiming.FSMC_CLKDivision = 0x00; readWriteTiming.FSMC_DataLatency = 0x00;

readWriteTiming.FSMC_AccessMode = FSMC_AccessMode_A; //模式A writeTiming.FSMC_AddressSetupTime = 0x00; //地址建立时间（ADDSET）为1个HCLK

writeTiming.FSMC_AddressHoldTime = 0x00; //地址保持时间（A writeTiming.FSMC_DataSetupTime = 0x03; ////数据保存时间为4个HCLK writeTiming.FSMC_BusTurnAroundDuration = 0x00; writeTiming.FSMC_CLKDivision = 0x00; writeTiming.FSMC_DataLatency = 0x00;

writeTiming.FSMC_AccessMode = FSMC_AccessMode_A; //模式A

FSMC_NORSRAMInitStructure.FSMC_Bank = FSMC_Bank1_NORSRAM4;// 这里我们

使用NE4 ，也就对应BTCR[6],[7]。

FSMC_NORSRAMInitStructure.FSMC_DataAddressMux = FSMC_DataAddressMux_Disable; // 不复用数据地址 FSMC_NORSRAMInitStructure.FSMC_MemoryType =FSMC_MemoryType_SRAM;// FSMC_MemoryType_SRAM; //SRAM

FSMC_NORSRAMInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_16b;//存储器数据宽度为16bit FSMC_NORSRAMInitStructure.FSMC_BurstAccessMode

=FSMC_BurstAccessMode_Disable;// FSMC_BurstAccessMode_Disable; FSMC_NORSRAMInitStructure.FSMC_WaitSignalPolarity = FSMC_WaitSignalPolarity_Low; FSMC_NORSRAMInitStructure.FSMC_AsynchronousWait=FSMC_AsynchronousWait_Disable;

FSMC_NORSRAMInitStructure.FSMC_WrapMode = FSMC_WrapMode_Disable; FSMC_NORSRAMInitStructure.FSMC_WaitSignalActive = FSMC_WaitSignalActive_BeforeWaitState;

FSMC_NORSRAMInitStructure.FSMC_WriteOperation = FSMC_WriteOperation_Enable; // 存储器写使能

FSMC_NORSRAMInitStructure.FSMC_WaitSignal = FSMC_WaitSignal_Disable;

FSMC_NORSRAMInitStructure.FSMC_ExtendedMode = FSMC_ExtendedMode_Enable; // 读写使用不同的时序

FSMC_NORSRAMInitStructure.FSMC_WriteBurst = FSMC_WriteBurst_Disable;

FSMC_NORSRAMInitStructure.FSMC_ReadWriteTimingStruct = &readWriteTiming; //读写时序

FSMC_NORSRAMInitStructure.FSMC_WriteTimingStruct = &writeTiming; //写时序

FSMC_NORSRAMInit(&FSMC_NORSRAMInitStructure); //初始化FSMC配置

FSMC_NORSRAMCmd(FSMC_Bank1_NORSRAM4, ENABLE); // 使能BANK1

delay_ms(50); // delay 50 ms LCD_WriteReg(0x0000,0x0001); delay_ms(50); // delay 50 ms

lcddev.id = LCD_ReadReg(0x0000);

if(lcddev.id<0XFF||lcddev.id==0XFFFF||lcddev.id==0X9300)//读到ID不正确,新增lcddev.id==0X9300判断，因为9341在未被复位的情况下会被读成9300 { //尝试9341 ID的读取 LCD_WR_REG(0XD3); LCD_RD_DATA(); //dummy read LCD_RD_DATA(); //读到0X00 lcddev.id=LCD_RD_DATA(); //读取93 lcddev.id<<=8; lcddev.id|=LCD_RD_DATA(); //读取41

if(lcddev.id!=0X9341) //非9341,尝试是不是6804 { LCD_WR_REG(0XBF); LCD_RD_DATA(); //dummy read LCD_RD_DATA(); //读回0X01 LCD_RD_DATA(); //读回0XD0 lcddev.id=LCD_RD_DATA();//这里读回0X68 lcddev.id<<=8; lcddev.id|=LCD_RD_DATA();//这里读回0X04 } if(lcddev.id!=0X9341&&lcddev.id!=0X6804)lcddev.id=0x9341;//新增，用于识别9341 }

printf(\打印LCD ID if(lcddev.id==0X9341) //9341初始化 { LCD_WR_REG(0xCF); LCD_WR_DATA(0x00); LCD_WR_DATA(0xC1); LCD_WR_DATA(0X30); LCD_WR_REG(0xED); LCD_WR_DATA(0x64); LCD_WR_DATA(0x03); LCD_WR_DATA(0X12); LCD_WR_DATA(0X81); LCD_WR_REG(0xE8); LCD_WR_DATA(0x85); LCD_WR_DATA(0x10); LCD_WR_DATA(0x7A); LCD_WR_REG(0xCB); LCD_WR_DATA(0x39); LCD_WR_DATA(0x2C); LCD_WR_DATA(0x00); LCD_WR_DATA(0x34); LCD_WR_DATA(0x02); LCD_WR_REG(0xF7); LCD_WR_DATA(0x20); LCD_WR_REG(0xEA); LCD_WR_DATA(0x00); LCD_WR_DATA(0x00); LCD_WR_REG(0xC0); //Power control LCD_WR_DATA(0x1B); //VRH[5:0] LCD_WR_REG(0xC1); //Power control LCD_WR_DATA(0x01); //SAP[2:0];BT[3:0]

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