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我最近在用STM32驱动240128液晶，搞了几天了，一直没反应，有会的，或者搞过类型的请帮我解决一下。液晶是直接5V供电，我是用四线串行时序，信号线直接和探索者开发板的GPIO口相连。下面是我的程序，望帮小弟解决一下。
/****************************************************************** ²âÊÔLCD240128Òº¾§Çý¶¯Í·Îļþ ******************************************************************/ #ifndef __LCD240128_H__ #define __LCD240128_H__ #include "sys.h" #include "delay.h" /******************************************** LCD¹Ü½Å¶¨Òå ********************************************/ //#define LCD240128_CS PAout(12) //#define LCD240128_RST PAout(13) //#define LCD240128_RS PAout(14) //#define LCD240128_SCL PAout(15) //#define LCD240128_SDA PBout(15) //#define LCD240128_CS PDout(14) //#define LCD240128_RST PDout(11) //#define LCD240128_RS PDout(15) //#define LCD240128_SCL PEout(8) //#define LCD240128_SDA PEout(9) #define LCD240128_CS_L GPIO_ResetBits(GPIOD, GPIO_Pin_14) #define LCD240128_CS_H GPIO_SetBits(GPIOD, GPIO_Pin_14) #define LCD240128_RST_L GPIO_ResetBits(GPIOD, GPIO_Pin_11) #define LCD240128_RST_H GPIO_SetBits(GPIOD, GPIO_Pin_11) #define LCD240128_RS_L GPIO_ResetBits(GPIOD, GPIO_Pin_15) #define LCD240128_RS_H GPIO_SetBits(GPIOD, GPIO_Pin_15) #define LCD240128_SCL_L GPIO_ResetBits(GPIOE, GPIO_Pin_8) #define LCD240128_SCL_H GPIO_SetBits(GPIOE, GPIO_Pin_8) #define LCD240128_SDA_L GPIO_ResetBits(GPIOE, GPIO_Pin_9) #define LCD240128_SDA_H GPIO_SetBits(GPIOE, GPIO_Pin_9) #define DIS_ON 0X3D #define DIS_OFF 0X3C #define REST 0X76 #define LCD240128_ClrAll 128 #define LCD240128_Direction 0 //ĬÈÏÇé¿öÏÂÊǺáÆÁÏÔʾ /********************************************* LCDÏà¹Øº¯Êý¶¨Òå **********************************************/ void LCD240128_WriteCommand(u8 Command); void LCD240128_WriteData(u8 Sdata); void LCD240128_ClearDisplay(u8 page); void LCD240128_Draw(u8 line,u8 list,u8 pw,u8 ph,u8 *Draw,u8 fbit); void DrawPicture(u8 line,u8 list,const u8 *Sk,u8 fbit); void LCD240128_Init(void); void SetXY(u8 x, u8 y); void ShowString(u8 x, u8 y, u8* str); #endif #include "lcd240128.h" /******************************************************************************************* * º¯ÊýÃèÊö£º·¢ËÍÖ¸ÁÊý£¬¸ßλÏÈËÍ * È«¾Ö×ÊÔ´£º * ÊäÈë²ÎÊý£º°ËλָÁîÂë * º¯Êý·µ»Ø£ºÎÞ *******************************************************************************************/ void LCD240128_WriteCommand(u8 Command) { u8 i; LCD240128_CS_L; delay_ms(5); LCD240128_RS_L; delay_ms(5); for(i = 0; i < 8; i++) { LCD240128_SCL_L; if(Command & 0x80) { LCD240128_SDA_H; } else { LCD240128_SDA_L; } delay_ms(5); LCD240128_SCL_H; Command <<= 1; } delay_ms(5); LCD240128_CS_H; delay_ms(5); } /******************************************************************************************* * º¯ÊýÃèÊö£º·¢ËÍÊý¾Ýº¯Êý£¬¸ßλÏÈËÍ * È«¾Ö×ÊÔ´£º * ÊäÈë²ÎÊý£º°ËλÊý¾Ý * º¯Êý·µ»Ø£ºÎÞ *******************************************************************************************/ void LCD240128_WriteData(u8 Sdata) { u8 i; LCD240128_CS_L; delay_ms(5); LCD240128_RS_H; delay_ms(5); for(i = 0; i < 8; i++) { LCD240128_SCL_L; if(Sdata & 0x80) {LCD240128_SDA_H;} else {LCD240128_SDA_L;} delay_ms(5); LCD240128_SCL_H; Sdata <<= 1; } delay_ms(5); LCD240128_CS_H; delay_ms(5); } /***************************************************************************************** ÏÔʾ×Ö·û´® *****************************************************************************************/ void SetXY(u8 x, u8 y) { LCD240128_WriteCommand(0X01); LCD240128_WriteCommand(x); LCD240128_WriteCommand(0xC0); LCD240128_WriteCommand(y); } /******************************************************************************************** ÏÔʾ×Ö·û´® *********************************************************************************************/ void ShowString(u8 x, u8 y, u8* str) { SetXY(x, y); while(*str!=' ') { LCD240128_WriteData(*str++); } } /******************************************************************************************* * º¯ÊýÃèÊö£ºÇåÏÔʾ£¬°´Ò³Çå³ý¡£Èç¹ûÊäÈëÒ³Êý´óÓÚ7£¨LCD240128_ClrAll£©£¬ÕûÆÁÇå³ý * È«¾Ö×ÊÔ´£º * ÊäÈë²ÎÊý£ºÒ³£¬page¡££¨LCD240128_ClrAll£© * º¯Êý·µ»Ø£º *******************************************************************************************/ void LCD240128_ClearDisplay(u8 page) { u8 i; u8 j; if(page > LCD240128_ClrAll - 1) { //ÇåÆÁ for(i = 0; i < LCD240128_ClrAll; i++) { LCD240128_WriteCommand(0X01); //ÉèÖÃҪдÈëµÄÒ³µØÖ· LCD240128_WriteCommand(i); //Ò³µØַдÈë LCD240128_WriteCommand(0XC0); //ÉèÖÃҪдÈëµÄÁеØÖ· LCD240128_WriteCommand(0); //ÁеØַдÈë for(j = 0; j < 32; j++) { LCD240128_WriteData(0x00); //ÇåÆÁ } } } else{ //ÇåÖ¸¶¨Ò³ LCD240128_WriteCommand(0X01); //ÉèÖÃҪдÈëµÄÒ³µØÖ· LCD240128_WriteCommand(page); //Ò³µØַдÈë LCD240128_WriteCommand(0XC0); //ÉèÖÃҪдÈëµÄÁеØÖ· LCD240128_WriteCommand(0); //ÁеØַдÈë for(j = 0; j < 32; j++) { LCD240128_WriteData(0x00); //ÇåÆÁ } } } /******************************************************************************************* * º¯ÊýÃèÊö£ºÔÚÖ¸¶¨Î»ÖÃÏÔʾͼ±ê¡¢×ÖÄ£ ͼ±êÔÚºáÆÁʱ¿í±ØÐëÊÇ8µÄÕûÊý£¬¼áÆÁʱ¸ß±ØÐëÊÇ8µÄÕûÊý¡£ * È«¾Ö×ÊÔ´£ºÂÔ * ÊäÈë²ÎÊý£ººá×ø±ê£¬×Ý×ø±ê£¬Í¼±ê¿í£¬Í¼±ê¸ß£¬Í¼±êÖ¸Õ룬·´ÏÔ±ê־λ¡£ * º¯Êý·µ»Ø£ºÎÞ *******************************************************************************************/ void DrawPicture(u8 line,u8 list,const u8 *Sk,u8 fbit) { u8 i,j; u8 skdata; for(i=0;i<128;i++) //ͼƬ¸ß¶È { LCD240128_WriteCommand(0X01); //ÉèÖÃÒªÏÔʾµÄÐеØÖ· LCD240128_WriteCommand(line+i); //µØַдÈë LCD240128_WriteCommand(0XC0); //ÉèÖÃÒªÏÔʾµÄÁеØÖ· LCD240128_WriteCommand(list); //µØַдÈë for(j=0;j<30;j++) //ͼƬ¿í¶È=240/8 { skdata=*(Sk+j+i*30); if(fbit) //Èç¹û·´ÏÔλΪ1£¬·´ÏÔÊý¾Ý { skdata=~skdata; } LCD240128_WriteData(skdata); } } } /************************************************************************************** »µãº¯Êý **************************************************************************************/ void LCD240128_Draw(u8 line,u8 list,u8 pw,u8 ph,u8 *Draw,u8 fbit) { u8 i, j; u8 lie, page; u8 plie, ppage; switch(LCD240128_Direction) { case 0://ºáÆÁ plie = pw / 8; ppage = ph; lie = line / 8 + 2; page = list + 1; break; case 1://¼áÆÁ plie = ph / 8; ppage = pw; lie = list / 8 + 2; page = line + 1; break; case 2: break; case 3: break; } for(i = 0; i < ppage; i++) //ͼռҳÊý£¨Í¼±êÔÚºáÆÁʱ¸ß±ØÐëÊÇ8µÄÕûÊý£¬¼áÆÁʱ¿í±ØÐëÊÇ8µÄÕûÊý£© { LCD240128_WriteCommand(0X01); //ÉèÖÃҪдÈëµÄÒ³µØÖ· LCD240128_WriteCommand(page + i); //Ò³µØַдÈë LCD240128_WriteCommand(0XC0); //ÉèÖÃҪдÈëµÄÁеØÖ· LCD240128_WriteCommand(lie); //ÁеØַдÈë for(j = 0; j < plie; j++) { if(fbit) { LCD240128_WriteData(~(*Draw)); } else { LCD240128_WriteData(*Draw); } Draw++; } } } /******************************************************************************************* * º¯ÊýÃèÊö£ºÒº¾§ÆÁ³õʼ»¯º¯Êý * È«¾Ö×ÊÔ´£º * ÊäÈë²ÎÊý£º * º¯Êý·µ»Ø£º *******************************************************************************************/ void LCD240128_Init(void) { //³õʼ»¯LCDµÄ¸÷¸öIO¿Ú GPIO_InitTypeDef GPIO_InitStruct; RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_GPIOE, ENABLE); GPIO_InitStruct.GPIO_Pin = GPIO_Pin_11|GPIO_Pin_14|GPIO_Pin_15; // GPIO_InitStruct.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOD, &GPIO_InitStruct); GPIO_SetBits(GPIOD, GPIO_Pin_11|GPIO_Pin_14|GPIO_Pin_15); GPIO_InitStruct.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_9;// GPIO_InitStruct.GPIO_Mode = GPIO_Mode_Out_PP; GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOE, &GPIO_InitStruct); GPIO_SetBits(GPIOE, GPIO_Pin_8|GPIO_Pin_9); LCD240128_RST_L; delay_ms(50); LCD240128_RST_H; delay_ms(20); delay_ms(20); LCD240128_WriteCommand(REST); delay_ms(30); LCD240128_WriteCommand(0X2F); //µçÔ´¿ØÖÆ0 0 0 0 1 0 1 VS VC VF LCD240128_WriteCommand(0X3A); //0 0 1 1 1 0 1 OSCOFF LCD240128_WriteCommand(0X35); //LCDƫѹ0 0 1 1 0 BS2 BS1 BS0 30=1/7, 31=1/8, 32=1/9, 33=1/10, 34=1/11, 35=1/12, 36=1/13, 37=1/14 LCD240128_WriteCommand(0X38); //SLEEP 0 0 1 1 1 0 0 SLP LCD240128_WriteCommand(0X44); //GRAY CONTROL 44H=MONO 45H=4GRAY ÁÁ¶È¼¶±ð LCD240128_WriteCommand(0X6C); //ÏÔʾÇý¶¯¿ØÖÆ£¬°üÀ¨·½Ïò£¬È«ÆÁ£¬·´ÏÔ£¬ LCD240128_WriteCommand(0X74); //ÉèÖÃÊÓ´°µÄ´¹Ö±ÏÔʾ·¶Î§.¸ù¾ÝÆÁµÄÏñËضø¶¨ LCD240128_WriteCommand(0X00); //¿ªÊ¼µØÖ· LCD240128_WriteCommand(0X7F); //½áÊøµØÖ·Y=128 LCD240128_WriteCommand(0X75); //ÉèÖÃÊÓ´°µÄˮƽÏÔʾ·¶Î§.¸ù¾ÝÆÁµÄÏñËضø¶¨ LCD240128_WriteCommand(0X00); //¿ªÊ¼µØÖ· LCD240128_WriteCommand(0XEF); //½áÊøµØÖ·x=240 LCD240128_WriteCommand(0X90); //ÉèÖÃDUTY COM×ÜÊý LCD240128_WriteCommand(0X80); //128 LCD240128_WriteCommand(0XB1); //ÉèÖñ¶Ñ¹Öµ£¬Í¨¹ý´ËÖµ¿ÉÒÔµ÷Õû¶Ô±È¶È LCD240128_WriteCommand(0X58); //дÈë LCD240128_WriteCommand(0XB2); //Frame¿ØÖÆ£¬ÉèÖÃÏÔʾˢÐÂƵÂÊ LCD240128_WriteCommand(0X3C); // LCD240128_WriteCommand(0X01); LCD240128_WriteCommand(0XE1); //ζȲ¹³¥¿ª LCD240128_WriteCommand(0X88); LCD240128_WriteCommand(0X88); LCD240128_WriteCommand(0X88); LCD240128_WriteCommand(0X88); LCD240128_WriteCommand(0X8A); LCD240128_WriteCommand(0X60); LCD240128_WriteCommand(0x41); //¶àÔö¼ÓÒÔÏÂÈýÌõÖ¸Áî LCD240128_WriteCommand(0x19); // LCD240128_WriteCommand(0x2F); // LCD240128_WriteCommand(0XE3); //¿Õ²Ù×÷Ö¸Áî LCD240128_WriteCommand(0X00); LCD240128_WriteCommand(0X7F); LCD240128_WriteCommand(0X75); LCD240128_WriteCommand(0X02); LCD240128_WriteCommand(0X1F); LCD240128_WriteCommand(0XC0); //ÉèÖÃÒªÏÔʾµÄÊ×ÁеØÖ· LCD240128_WriteCommand(0X02); //µØַдÈë LCD240128_WriteCommand(0X01); //ÉèÖÃÒªÏÔʾµÄÊ×ÐеØÖ· LCD240128_WriteCommand(0X00); //µØַдÈë delay_ms(50); // LCD_CmdWrite(0xE3); LCD240128_WriteCommand(DIS_ON);//¿ªÏÔʾ delay_ms(50); } #include "lcd240128.h" #include "lcd240128font.h" /************************************************ ************************************************/ u8 str1[]= "baofeng"; int main(void) { delay_init(); LCD240128_Init(); //LCD240128_ClearDisplay(LCD240128_ClrAll); //DrawPicture(0, 2, logo, 1); ShowString(5,0,str1); while(1); } #ifndef __LCD240128FONT_H__ #define __LCD240128FONT_H__ #include "sys.h" const u8 logo[]={ 0x01,0x02,0x10,0x00,0x7D,0x01,0x67,0x80,0x05,0xF0,0x44,0x80,0x46,0x10,0x44,0x80, 0x2C,0x23,0x44,0x80,0x28,0x81,0x44,0x80,0x10,0x81,0x54,0x80,0x10,0x81,0x64,0x80, 0x29,0x41,0x45,0x80,0x29,0x41,0x04,0x00,0x42,0x21,0x04,0x00,0x04,0x12,0xFF,0x80, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }; #endif 
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3个回答
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先确定屏是好的，然后再用示波器看你写的单片机的代码控制的IO是不是正常的输出的，一步一步找错。
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屏是好的 这点无疑的 在其他51单片机上试过了是好的，我抓了时序，好像有点问题，我也不确定是不是stm32主频太高了，还是硬件有点问题。搞了几天了 还是不行，很奇怪 |
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xp3539989 发表于 2015-10-10 08:18 你觉得主频高就试试降低数据的速率，看看效果会不会好些，有些点阵屏的某些指令需要有严格的时序要求，详细的看看数据手册，做对应的调整。 |
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