STM32 IIC 无法显示

小猪猪

[mw_shl_code=c,true]#include "allheader.h" int main(void) { /* Add your application code here*/ char i; //LED_GPIO_Config(); delay_init(72); //????? OLED_Initial(); LCD_P8x16Str(28,0,"OLED TEST"); LCD_P8x16Str(20,2,"OLEDDISPLAY"); LCD_P6x8Str(16,5,"315322339@qq.com"); LCD_P6x8Str(34,6,"2014-11-22"); delay_ms(1500); //??1s //Draw_BMP(0,0,128,8,BMP1); //???? delay_ms(1000); LCD_CLS(); while(1) { delay_ms(500); //??1s for(i=0; i<8; i++) { LCD_P16x16Ch(i*16,0,i); //???? LCD_P16x16Ch(i*16,2,i+8); LCD_P16x16Ch(i*16,4,i+16); LCD_P16x16Ch(i*16,6,i+24); } } }[/mw_shl_code]

[mw_shl_code=c,true]#ifndef __IIC_H #define __IIC_H #include "allheader.h" #ifdef __cplusplus extern "C" { #endif /*************Pin Define***************/ #define SCL_HIGH GPIO_SetBits(GPIOB, GPIO_Pin_8) //LED1??//P1OUT|=BIT0 //SCL P1.0 #define SCL_LOW GPIO_ResetBits(GPIOB, GPIO_Pin_8) //P1OUT&=~BIT0 #define SDA_HIGH GPIO_SetBits(GPIOB, GPIO_Pin_9) //P1OUT|=BIT1 //SDA P1.1 #define SDA_LOW GPIO_ResetBits(GPIOB, GPIO_Pin_9) //P1OUT&=~BIT1 /****************************************************/ void OLED_Initial(void); void IIC_Start(void); void IIC_Stop(void); void Write_IIC_Command(unsigned char IIC_Command); void Write_IIC_Data(unsigned char IIC_Data); void Write_IIC_Byte(unsigned char IIC_Byte); void LCD_Set_Pos(unsigned char x, unsigned char y); void LCD_CLS(void); void LCD_P8x16Str(unsigned char x,unsigned char y,unsigned char ch[]); void LCD_P16x16Ch(unsigned char x,unsigned char y,unsigned char N); void LCD_P6x8Str(unsigned char x,unsigned char y,unsigned char ch[]); void Draw_BMP(unsigned char x0,unsigned char y0,unsigned char x1,unsigned char y1,unsigned char BMP[]); #ifdef __cplusplus } #endif #endif[/mw_shl_code]

[mw_shl_code=c,true] #include "stm32f10x_i2c.h" #include "IIC.h" #include "delay.h" #include "sys.h" unsigned char F16x16[1024]; unsigned char BMP[2048]; const unsigned char F6x8[92][6]; const unsigned char F8X16[1600]; #define XLevelL 0x00 #define XLevelH 0x10 #define XLevel ((XLevelH&0x0F)*16+XLevelL) #define Max_Column 128 #define Max_Row 64 #define Brightness 0xCF #define X_WIDTH 128 #define Y_WIDTH 64 ////////////////////////////////////////////////////////////////////////////////////////////////////////////////// void OLED_Initial() { GPIO_InitTypeDef GPIO_InitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); /* PB8,9 SCL and SDA */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_Init(GPIOB, &GPIO_InitStructure); delay_ms(100); //?? Write_IIC_Command(0xAE); //display off Write_IIC_Command(0x20); //Set Memory Addressing Mode Write_IIC_Command(0x10); //00,Horizontal Addressing Mode;01,Vertical Addressing Mode;10,Page Addressing Mode (RESET);11,Invalid Write_IIC_Command(0xb0); //Set Page Start Address for Page Addressing Mode,0-7 Write_IIC_Command(0xc8); //Set COM Output Scan Direction Write_IIC_Command(0x00);//---set low column address Write_IIC_Command(0x10);//---set high column address Write_IIC_Command(0x40);//--set start line address Write_IIC_Command(0x81);//--set contrast control register Write_IIC_Command(0x7f); Write_IIC_Command(0xa1);//--set segment re-map 0 to 127 Write_IIC_Command(0xa6);//--set normal display Write_IIC_Command(0xa8);//--set multiplex ratio(1 to 64) Write_IIC_Command(0x3F);// Write_IIC_Command(0xa4);//0xa4,Output follows RAM content;0xa5,Output ignores RAM content Write_IIC_Command(0xd3);//-set display offset Write_IIC_Command(0x00);//-not offset Write_IIC_Command(0xd5);//--set display clock divide ratio/oscillator frequency Write_IIC_Command(0xf0);//--set divide ratio Write_IIC_Command(0xd9);//--set pre-charge period Write_IIC_Command(0x22); // Write_IIC_Command(0xda);//--set com pins hardware configuration Write_IIC_Command(0x12); Write_IIC_Command(0xdb);//--set vcomh Write_IIC_Command(0x20);//0x20,0.77xVcc Write_IIC_Command(0x8d);//--set DC-DC enable Write_IIC_Command(0x14);// Write_IIC_Command(0xaf);//--turn on oled panel LCD_CLS(); LCD_Set_Pos(0,0); } /********************************************** //IIC Start **********************************************/ void IIC_Start() { SCL_HIGH; SDA_HIGH; SDA_LOW; SCL_LOW; } /********************************************** //IIC Stop **********************************************/ void IIC_Stop() { SCL_LOW; SDA_LOW; SCL_HIGH; SDA_HIGH; } /********************************************** // IIC Write byte **********************************************/ void Write_IIC_Byte(unsigned char IIC_Byte) { unsigned char i; for(i=0;i<8;i++) { if(IIC_Byte&0x80) //1?0? SDA_HIGH; else SDA_LOW; SCL_HIGH; SCL_LOW; IIC_Byte<<=1; //loop } SDA_HIGH; SCL_HIGH; SCL_LOW; } /********************************************** // IIC Write Command **********************************************/ void Write_IIC_Command(unsigned char IIC_Command) { IIC_Start(); Write_IIC_Byte(0x78); //Slave address,SA0=0 Write_IIC_Byte(0x00); //write command Write_IIC_Byte(IIC_Command); IIC_Stop(); } /********************************************** // IIC Write Data **********************************************/ void Write_IIC_Data(unsigned char IIC_Data) { IIC_Start(); Write_IIC_Byte(0x78); Write_IIC_Byte(0x40); //write data Write_IIC_Byte(IIC_Data); IIC_Stop(); } /*********************LCD ????************************************/ void LCD_Set_Pos(unsigned char x, unsigned char y) { Write_IIC_Command(0xb0+y); Write_IIC_Command(((x&0xf0)>>4)|0x10); Write_IIC_Command((x&0x0f)|0x01); } /*********************LCD??************************************/ void LCD_CLS(void) { unsigned char y,x; for(y=0;y<8;y++) { Write_IIC_Command(0xb0+y); Write_IIC_Command(0x01); Write_IIC_Command(0x10); for(x=0;x<X_WIDTH;x++) Write_IIC_Data(0); } } /***************????:??6*8????ASCII??? ?????(x,y),y????0~7****************/ void LCD_P6x8Str(unsigned char x,unsigned char y,unsigned char ch[]) { unsigned char c=0,i=0,j=0; while (ch[j]!='\0') { c =ch[j]-32; if(x>126){x=0;y++;} LCD_Set_Pos(x,y); for(i=0;i<6;i++) Write_IIC_Data(F6x8[c]); x+=6; j++; } } /*******************????:??8*16????ASCII??? ?????(x,y),y????0~7****************/ void LCD_P8x16Str(unsigned char x,unsigned char y,unsigned char ch[]) { unsigned char c=0,i=0,j=0; while (ch[j]!='\0') { c =ch[j]-32; if(x>120){x=0;y++;} LCD_Set_Pos(x,y); for(i=0;i<8;i++) Write_IIC_Data(F8X16[c*16+i]); LCD_Set_Pos(x,y+1); for(i=0;i<8;i++) Write_IIC_Data(F8X16[c*16+i+8]); x+=8; j++; } } /*****************????:??16*16?? ?????(x,y),y????0~7****************************/ void LCD_P16x16Ch(unsigned char x,unsigned char y,unsigned char N) { unsigned char wm=0; unsigned int adder=32*N; // LCD_Set_Pos(x , y); for(wm = 0;wm < 16;wm++) // { Write_IIC_Data(F16x16[adder]); adder += 1; } LCD_Set_Pos(x,y + 1); for(wm = 0;wm < 16;wm++) // { Write_IIC_Data(F16x16[adder]); adder += 1; } } void Draw_BMP(unsigned char x0,unsigned char y0,unsigned char x1,unsigned char y1,unsigned char BMP[]) { unsigned int j=0; unsigned char x,y; if(y1%8==0) y=y1/8; else y=y1/8+1; for(y=y0;y<y1;y++) { LCD_Set_Pos(x0,y); for(x=x0;x<x1;x++) { Write_IIC_Data(BMP[j++]); } } }[/mw_shl_code]

我利用debug 程序是可以跑的 但是就是显示不了 R8 我看技术手册 是可以焊可以不焊的  然后脱R3的时候 不小型把4.7K弄掉了换了一个0805的5.1K  为什么显示不了 吧友们帮我看看 谢谢！

石头0218

先检查一下是不是IIC通信成功了