串行12864STM32程序.docx

串行12864&STM32程序文档说明：此程序是从串行12864LCD的51程序中改写过来的。另：此程序是基于STM32f103内核芯片开发的，使用的屏幕为JLX12864G-086串行LCD。/*lcd12864.h*/*lcd12864.c*/#include lcd_12864.h/*其中SDA、SCK、RS、CS、RST已在头文件中宏定义*/*LCD_GPIO Init*/void GPIO_LCD(void)GPIO_InitTypeDef GPIO_InitStructure;GPIO_InitStructure.GPIO_Pin =SDA;/SDAGPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_Init(GPIO_SDA, &GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin =SCK;/SCKGPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_Init(GPIO_SCK, &GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin =RST;/RSTGPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_Init(GPIO_RST, &GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin =RS;/RSGPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_Init(GPIO_RS, &GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin =CS;/CSGPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_Init(GPIO_CS, &GPIO_InitStructure);/*write command to LCD*/void write_command(unsigned short int command)unsigned short int i;CS_L; /开启片选（低电平有效）RS_L; /开启寄存器地址for(i=0;i8;i+)SCK_L;/拉高时钟线同SPI原理差不多if(command&0x80)/传输指令SDA_H;else SDA_L;SCK_H;/LCD读取指令command = command 1 ;CS_H;/关闭片选/*write data to LCD*/void write_data(unsigned short int data)unsigned short int i;CS_L;RS_H;/开启数据地址for(i=0;i8;i+)SCK_L;if(data&0x80) SDA_H;else SDA_L;SCK_H;data = data 4)&0x0f)+0x10);write_command(column&0x0f);/*clear screen*/void clear_screen(void) unsigned short int i,j;CS_L;for(i=0;i9;i+)lcd_address(i+1,1);for(j=0;j128;j+) write_data(0x00); CS_H;/*dispay a 128*64 picture*/void full_display(unsigned short int *dp)unsi