为什么我会收到此警告？
我正在尝试编写这个程序：
#include "stm32f10x.h"
#include "ILI9325.h"
/* Private functions ---------------------------------------------------------*/
/*******************************************************************************
* Function Name : main
* Description : Main Program
* Input : None
* Output : None
* Return : None
* Attention : None
*******************************************************************************/
int main(void)
{
uint8_t b,c;
Lcd_Configuration();
Lcd_Initialize();
Lcd_Clear(0xffff);
Lcd_Clear(0x0000);
Lcd_Clear(0xff00);
for ( b = 0 ; b < 200 ; b++ )
{
for ( c = 0 ; c < 200 ; c++ )
{
DrawPixel( b , c , 0xffff );
}
}
/* Infinite loop */
while (1)
{
}
}
但是我得到了这个警告（黄色标题）：
隐式声明函数＆＃34; DrawPixel＆＃34;
如下面的快照
我已经看到很多关于此警告的问题，我认为每件事都可以，但我仍然会收到此警告。
ILI9325.h档案：
#ifndef __ILI9325_H
#define __ILI9325_H
// ILI9320 or ILI9325
#define ILI9325
#define ID_AM 110
extern u16 q;
//#define Delay //Display Delay//Immediately
#define Set_Cs GPIO_SetBits(GPIOC,GPIO_Pin_8);
#define Clr_Cs GPIO_ResetBits(GPIOC,GPIO_Pin_8);
#define Set_Rs GPIO_SetBits(GPIOC,GPIO_Pin_9);
#define Clr_Rs GPIO_ResetBits(GPIOC,GPIO_Pin_9);
#define Set_nWr GPIO_SetBits(GPIOC,GPIO_Pin_10);
#define Clr_nWr GPIO_ResetBits(GPIOC,GPIO_Pin_10);
#define Set_nRd GPIO_SetBits(GPIOC,GPIO_Pin_11);
#define Clr_nRd GPIO_ResetBits(GPIOC,GPIO_Pin_11);
#define Set_Rst GPIO_SetBits(GPIOC,GPIO_Pin_12);
#define Clr_Rst GPIO_ResetBits(GPIOC,GPIO_Pin_12);
#define Lcd_Light_ON GPIO_SetBits(GPIOC,GPIO_Pin_13);
#define Lcd_Light_OFF GPIO_ResetBits(GPIOC,GPIO_Pin_13);
typedef union
{
u16 U16;
u8 U8[2];
}ColorTypeDef;
void Lcd_Configuration(void);
void DataToWrite(u16 data);
void LCD_WR_REG(u16 Index,u16 CongfigTemp);
void Lcd_Initialize(void);
void Lcd_WR_Start(void);
void Lcd_SetCursor(u8 x,u16 y);
void Lcd_Clear(u16 Color);
void Lcd_ClearCharBox(u8 x,u16 y,u16 Color);
void Lcd_SetBox(u8 xStart,u16 yStart,u8 xLong,u16 yLong,u16 x_offset,u16 y_offset);
void Lcd_ColorBox(u8 x,u16 y,u8 xLong,u16 yLong,u16 Color);
void Delay_nms(int n);
//u16 Read9325(void);
#define logo 0x51000
#define key24048 0x4a000
#define key8048 0x48000
#define key2480 0x77000
#define key2448 0x78000
#define BatteryHight 0x79000
#define BatteryMiddle 0x7a000
#define BatteryLow 0x7b000
#define BatteryTooLow 0x7c000
#define key24032 0x80000
#define PowOffkey24048 0x84000
#define ASCII_Offset 0x47000
#define Chinese_Offset 0x1000
#endif
和ILI9325.c档案：
void Lcd_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOB|RCC_APB2Periph_GPIOC, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10|GPIO_Pin_11|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10|GPIO_Pin_11|GPIO_Pin_12;
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin =GPIO_Pin_13;
GPIO_Init(GPIOC, &GPIO_InitStructure);
}
void DataToWrite(u16 data)
{
u16 temp;
temp = GPIO_ReadOutputData(GPIOB);
GPIO_Write(GPIOB, (data<<8)|(temp&0x00ff));
temp = GPIO_ReadOutputData(GPIOC);
GPIO_Write(GPIOC, (data>>8)|(temp&0xff00));
}
void LCD_WR_REG(u16 Index,u16 CongfigTemp)
{
Clr_Cs;
Clr_Rs;
Set_nRd;
DataToWrite(Index);
Clr_nWr;
Set_nWr;
Set_Rs;
DataToWrite(CongfigTemp);
Clr_nWr;
Set_nWr;
Set_Cs;
}
u16 CheckController(void)
{
u16 tmp=0,tmp1=0,tmp2=0;
GPIO_InitTypeDef GPIO_InitStructure;
DataToWrite(0xffff);
Set_Rst;
Set_nWr;
Set_Cs;
Set_Rs;
Set_nRd;
Set_Rst;
Delay_nms(1);
Clr_Rst;
Delay_nms(1);
Set_Rst;
Delay_nms(1);
LCD_WR_REG(0x0000,0x0001); //start oscillation
Delay_nms(1);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10|GPIO_Pin_11|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_ResetBits(GPIOC,GPIO_Pin_8);
GPIO_SetBits(GPIOC,GPIO_Pin_9);
GPIO_ResetBits(GPIOC,GPIO_Pin_11);
tmp1 = GPIO_ReadInputData(GPIOB);
tmp2 = GPIO_ReadInputData(GPIOC);
tmp = (tmp1>>8) | (tmp2<<8);
GPIO_SetBits(GPIOC,GPIO_Pin_11);
GPIO_SetBits(GPIOC,GPIO_Pin_8);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10|GPIO_Pin_11|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;
GPIO_Init(GPIOC, &GPIO_InitStructure);
return tmp;
}
void Lcd_Initialize(void)
{
u16 i;
Lcd_Light_ON;
DataToWrite(0xffff);
Set_Rst;
Set_nWr;
Set_Cs;
Set_Rs;
Set_nRd;
Set_Rst;
Delay_nms(1);
Clr_Rst;
Delay_nms(1);
Set_Rst;
Delay_nms(1);
/*
#ifdef ILI9325
LCD_WR_REG(0x00e3,0x3008);
LCD_WR_REG(0x00e7,0x0010);
LCD_WR_REG(0x00ef,0x1231); //Set the internal vcore voltage
LCD_WR_REG(0x0001,0x0100); //When SS = 0, the shift direction of outputs is from S1 to S720
#endif //When SS = 1, the shift direction of outputs is from S720 to S1.
#ifdef ILI9320
LCD_WR_REG(0x00e5,0x8000);
LCD_WR_REG(0x0000,0x0001);
LCD_WR_REG(0x0001,0x0100);//S
Delay_nms(10);
#endif
LCD_WR_REG(0x0002,0x0700);//Line inversion
#if ID_AM==000
LCD_WR_REG(0x0003,0x0000);
#elif ID_AM==001
LCD_WR_REG(0x0003,0x0008);
#elif ID_AM==010
LCD_WR_REG(0x0003,0x0010);
#elif ID_AM==011
LCD_WR_REG(0x0003,0x0018);
#elif ID_AM==100
LCD_WR_REG(0x0003,0x0020);
#elif ID_AM==101
LCD_WR_REG(0x0003,0x0028);
#elif ID_AM==110
LCD_WR_REG(0x0003,0x0030);
#elif ID_AM==111
LCD_WR_REG(0x0003,0x0038);
#endif
LCD_WR_REG(0x0004,0x0000);
LCD_WR_REG(0x0008,0x0207);
LCD_WR_REG(0x0009,0x0000);
LCD_WR_REG(0x000a,0x0000);
LCD_WR_REG(0x000c,0x0001);
LCD_WR_REG(0x000d,0x0000);
LCD_WR_REG(0x000f,0x0000);
LCD_WR_REG(0x0010,0x0000);
LCD_WR_REG(0x0011,0x0000);
LCD_WR_REG(0x0012,0x0000);
LCD_WR_REG(0x0013,0x0000);
Delay_nms(200);
LCD_WR_REG(0x0010,0x17b0);
LCD_WR_REG(0x0011,0x0137);
Delay_nms(50);
LCD_WR_REG(0x0012,0x0139);
Delay_nms(50);
LCD_WR_REG(0x0013,0x1700);
LCD_WR_REG(0x0029,0x0000);
LCD_WR_REG(0x002b,0x0000);
Delay_nms(50);
#if ID_AM==000
LCD_WR_REG(0x0020,0x00ef);
LCD_WR_REG(0x0021,0x013f);
#elif ID_AM==001
LCD_WR_REG(0x0020,0x00ef);
LCD_WR_REG(0x0021,0x013f);
#elif ID_AM==010
LCD_WR_REG(0x0020,0x0000);
LCD_WR_REG(0x0021,0x013f);
#elif ID_AM==011
LCD_WR_REG(0x0020,0x0000);
LCD_WR_REG(0x0021,0x013f);
#elif ID_AM==100
LCD_WR_REG(0x0020,0x00ef);
LCD_WR_REG(0x0021,0x0000);
#elif ID_AM==101
LCD_WR_REG(0x0020,0x00ef);
LCD_WR_REG(0x0021,0x0000);
#elif ID_AM==110
LCD_WR_REG(0x0020,0x0000);
LCD_WR_REG(0x0021,0x0000);
#elif ID_AM==111
LCD_WR_REG(0x0020,0x0000);
LCD_WR_REG(0x0021,0x0000);
#endif
LCD_WR_REG(0x0030,0x0000);
LCD_WR_REG(0x0031,0x0507);
LCD_WR_REG(0x0032,0x0104);
LCD_WR_REG(0x0035,0x0105);
LCD_WR_REG(0x0036,0x0404);
LCD_WR_REG(0x0037,0x0603);
LCD_WR_REG(0x0038,0x0004);
LCD_WR_REG(0x0039,0x0007);
LCD_WR_REG(0x003c,0x0501);
LCD_WR_REG(0x003d,0x0404);
LCD_WR_REG(0x0050,0x0000);
LCD_WR_REG(0x0051,0x00ef);
LCD_WR_REG(0x0052,0x0000);
LCD_WR_REG(0x0053,0x013f);
#ifdef ILI9325
LCD_WR_REG(0x0060,0xa700);//G
#endif
#ifdef ILI9320
LCD_WR_REG(0x0060,0x2700);//G
#endif
LCD_WR_REG(0x0061,0x0001);//Enables the grayscale inversion of the image by setting REV=1.??????????????????????????????
LCD_WR_REG(0x006a,0x0000);
LCD_WR_REG(0x0080,0x0000);
LCD_WR_REG(0x0081,0x0000);
LCD_WR_REG(0x0082,0x0000);
LCD_WR_REG(0x0083,0x0000);
LCD_WR_REG(0x0084,0x0000);
LCD_WR_REG(0x0085,0x0000);
LCD_WR_REG(0x0090,0x0010);
LCD_WR_REG(0x0092,0x0000);
LCD_WR_REG(0x0093,0x0003);
LCD_WR_REG(0x0095,0x0110);
LCD_WR_REG(0x0097,0x0000);
LCD_WR_REG(0x0098,0x0000);
LCD_WR_REG(0x0007,0x0130);
#ifdef Immediately
LCD_WR_REG(0x0007,0x0173);
#endif
*/
i = CheckController();
q=i;
if(i==0x9325||i==0x9328)
{
LCD_WR_REG(0x00e7,0x0010);
LCD_WR_REG(0x0000,0x0001); //start internal osc
LCD_WR_REG(0x0001,0x0100);
LCD_WR_REG(0x0002,0x0700); //power on sequence
LCD_WR_REG(0x0003,(1<<12)|(1<<5)|(1<<4) ); //65K
LCD_WR_REG(0x0004,0x0000);
LCD_WR_REG(0x0008,0x0207);
LCD_WR_REG(0x0009,0x0000);
LCD_WR_REG(0x000a,0x0000); //display setting
LCD_WR_REG(0x000c,0x0001); //display setting
LCD_WR_REG(0x000d,0x0000); //0f3c
LCD_WR_REG(0x000f,0x0000);
LCD_WR_REG(0x0010,0x0000);
LCD_WR_REG(0x0011,0x0007);
LCD_WR_REG(0x0012,0x0000);
LCD_WR_REG(0x0013,0x0000);
for(i=50000;i>0;i--);
LCD_WR_REG(0x0010,0x1590);
LCD_WR_REG(0x0011,0x0227);
for(i=50000;i>0;i--);
LCD_WR_REG(0x0012,0x009c);
for(i=50000;i>0;i--);
LCD_WR_REG(0x0013,0x1900);
LCD_WR_REG(0x0029,0x0023);
LCD_WR_REG(0x002b,0x000e);
for(i=50000;i>0;i--);
LCD_WR_REG(0x0020,0x0000);
LCD_WR_REG(0x0021,0x0000);
for(i=50000;i>0;i--);
LCD_WR_REG(0x0030,0x0007);
LCD_WR_REG(0x0031,0x0707);
LCD_WR_REG(0x0032,0x0006);
LCD_WR_REG(0x0035,0x0704);
LCD_WR_REG(0x0036,0x1f04);
LCD_WR_REG(0x0037,0x0004);
LCD_WR_REG(0x0038,0x0000);
LCD_WR_REG(0x0039,0x0706);
LCD_WR_REG(0x003c,0x0701);
LCD_WR_REG(0x003d,0x000f);
for(i=50000;i>0;i--);
LCD_WR_REG(0x0050,0x0000);
LCD_WR_REG(0x0051,0x00ef);
LCD_WR_REG(0x0052,0x0000);
LCD_WR_REG(0x0053,0x013f);
LCD_WR_REG(0x0060,0xa700);
LCD_WR_REG(0x0061,0x0001);
LCD_WR_REG(0x006a,0x0000);
LCD_WR_REG(0x0080,0x0000);
LCD_WR_REG(0x0081,0x0000);
LCD_WR_REG(0x0082,0x0000);
LCD_WR_REG(0x0083,0x0000);
LCD_WR_REG(0x0084,0x0000);
LCD_WR_REG(0x0085,0x0000);
LCD_WR_REG(0x0090,0x0010);
LCD_WR_REG(0x0092,0x0000);
LCD_WR_REG(0x0093,0x0003);
LCD_WR_REG(0x0095,0x0110);
LCD_WR_REG(0x0097,0x0000);
LCD_WR_REG(0x0098,0x0000);
//display on sequence
LCD_WR_REG(0x0007,0x0133);
LCD_WR_REG(0x0020,0x0000);
LCD_WR_REG(0x0021,0x0000);
}
else if(i==0x9320)
{
LCD_WR_REG(0x00,0x0000);
LCD_WR_REG(0x01,0x0100); //Driver Output Contral.
LCD_WR_REG(0x02,0x0700); //LCD Driver Waveform Contral.
LCD_WR_REG(0x03,0x1030); //Entry Mode Set.
LCD_WR_REG(0x04,0x0000); //Scalling Contral.
LCD_WR_REG(0x08,0x0202); //Display Contral 2.(0x0207)
LCD_WR_REG(0x09,0x0000); //Display Contral 3.(0x0000)
LCD_WR_REG(0x0a,0x0000); //Frame Cycle Contal.(0x0000)
LCD_WR_REG(0x0c,(1<<0)); //Extern Display Interface Contral 1.(0x0000)
LCD_WR_REG(0x0d,0x0000); //Frame Maker Position.
LCD_WR_REG(0x0f,0x0000); //Extern Display Interface Contral 2.
for(i=50000;i>0;i--);
LCD_WR_REG(0x07,0x0101); //Display Contral.
for(i=50000;i>0;i--);
LCD_WR_REG(0x10,(1<<12)|(0<<8)|(1<<7)|(1<<6)|(0<<4)); //Power Control 1.(0x16b0)
LCD_WR_REG(0x11,0x0007); //Power Control 2.(0x0001)
LCD_WR_REG(0x12,(1<<8)|(1<<4)|(0<<0)); //Power Control 3.(0x0138)
LCD_WR_REG(0x13,0x0b00); //Power Control 4.
LCD_WR_REG(0x29,0x0000); //Power Control 7.
LCD_WR_REG(0x2b,(1<<14)|(1<<4));
LCD_WR_REG(0x50,0); //Set X Start.
LCD_WR_REG(0x51,239); //Set X End.
LCD_WR_REG(0x52,0); //Set Y Start.
LCD_WR_REG(0x53,319); //Set Y End.
LCD_WR_REG(0x60,0x2700); //Driver Output Control.
LCD_WR_REG(0x61,0x0001); //Driver Output Control.
LCD_WR_REG(0x6a,0x0000); //Vertical Srcoll Control.
LCD_WR_REG(0x80,0x0000); //Display Position? Partial Display 1.
LCD_WR_REG(0x81,0x0000); //RAM Address Start? Partial Display 1.
LCD_WR_REG(0x82,0x0000); //RAM Address End-Partial Display 1.
LCD_WR_REG(0x83,0x0000); //Displsy Position? Partial Display 2.
LCD_WR_REG(0x84,0x0000); //RAM Address Start? Partial Display 2.
LCD_WR_REG(0x85,0x0000); //RAM Address End? Partial Display 2.
LCD_WR_REG(0x90,(0<<7)|(16<<0)); //Frame Cycle Contral.(0x0013)
LCD_WR_REG(0x92,0x0000); //Panel Interface Contral 2.(0x0000)
LCD_WR_REG(0x93,0x0001); //Panel Interface Contral 3.
LCD_WR_REG(0x95,0x0110); //Frame Cycle Contral.(0x0110)
LCD_WR_REG(0x97,(0<<8)); //
LCD_WR_REG(0x98,0x0000); //Frame Cycle Contral.
LCD_WR_REG(0x07,0x0173); //(0x0173)
}
}
void Lcd_WR_Start(void)
{
Clr_Cs;
Clr_Rs;
Set_nRd;
DataToWrite(0x0022);
Clr_nWr;
Set_nWr;
Set_Rs;
}
void Lcd_SetCursor(u8 x,u16 y)
{
LCD_WR_REG(0x20,x);
LCD_WR_REG(0x21,y);
}
void Lcd_Clear(u16 Color)
{
u32 temp;
Lcd_SetCursor(0x00, 0x0000);
LCD_WR_REG(0x0050,0x00);
LCD_WR_REG(0x0051,239);
LCD_WR_REG(0x0052,0x00);
LCD_WR_REG(0x0053,319);
Lcd_WR_Start();
Set_Rs;
for (temp = 0; temp < 76800; temp++)
{
DataToWrite(Color);
Clr_nWr;
Set_nWr;
}
Set_Cs;
}
void Lcd_SetBox(u8 xStart,u16 yStart,u8 xLong,u16 yLong,u16 x_offset,u16 y_offset)
{
#if ID_AM==000
Lcd_SetCursor(xStart+xLong-1+x_offset,yStart+yLong-1+y_offset);
#elif ID_AM==001
Lcd_SetCursor(xStart+xLong-1+x_offset,yStart+yLong-1+y_offset);
#elif ID_AM==010
Lcd_SetCursor(xStart+x_offset,yStart+yLong-1+y_offset);
#elif ID_AM==011
Lcd_SetCursor(xStart+x_offset,yStart+yLong-1+y_offset);
#elif ID_AM==100
Lcd_SetCursor(xStart+xLong-1+x_offset,yStart+y_offset);
#elif ID_AM==101
Lcd_SetCursor(xStart+xLong-1+x_offset,yStart+y_offset);
#elif ID_AM==110
Lcd_SetCursor(xStart+x_offset,yStart+y_offset);
#elif ID_AM==111
Lcd_SetCursor(xStart+x_offset,yStart+y_offset);
#endif
LCD_WR_REG(0x0050,xStart+x_offset);
LCD_WR_REG(0x0051,xStart+xLong-1+x_offset);
LCD_WR_REG(0x0052,yStart+y_offset);
LCD_WR_REG(0x0053,yStart+yLong-1+y_offset);
}
void Lcd_ColorBox(u8 xStart,u16 yStart,u8 xLong,u16 yLong,u16 Color)
{
u32 temp;
Lcd_SetBox(xStart,yStart,xLong,yLong,0,0);
Lcd_WR_Start();
Set_Rs;
for (temp=0; temp<xLong*yLong; temp++)
{
DataToWrite(Color);
Clr_nWr;
Set_nWr;
}
Set_Cs;
}
void Lcd_ClearCharBox(u8 x,u16 y,u16 Color)
{
u32 temp;
Lcd_SetBox(x*8,y*16,8,16,0,0);
Lcd_WR_Start();
Set_Rs;
for (temp=0; temp < 128; temp++)
{
DataToWrite(Color);
Clr_nWr;
//Delay_nus(22);
Set_nWr;
}
Set_Cs;
}
void Delay_nms(int n)
{
u32 f=n,k;
for (; f!=0; f--)
{
for(k=0xFFF; k!=0; k--);
}
}
void DrawPixel(u16 x, u16 y, int Color)
{
Lcd_SetCursor(x,y);
Lcd_WR_Start();
Set_Rs;
DataToWrite(Color);
Clr_nWr;
Set_nWr;
Set_Cs;
}
void DispPic240_320(const unsigned char *str)
{
u32 temp;
ColorTypeDef color;
Lcd_SetCursor(0x00, 0x0000);
LCD_WR_REG(0x0050,0x00);
LCD_WR_REG(0x0051,239);
LCD_WR_REG(0x0052,0);
LCD_WR_REG(0x0053,319);
Lcd_WR_Start();
Set_Rs;
for (temp = 0; temp < 240*320; temp++)
{
color.U8[1] =*(unsigned short *)(&str[ 2 * temp]);
color.U8[0]=*(unsigned short *)(&str[ 2 * temp+1]);
//DataToWrite(i);
DataToWrite(color.U16);
Clr_nWr;
Set_nWr;
}
//==============================
}
void test_color(void){
u8 R_data,G_data,B_data,i,j;
Lcd_SetCursor(0x00, 0x0000);
LCD_WR_REG(0x0050,0x00);
LCD_WR_REG(0x0051,239);
LCD_WR_REG(0x0052,0);
LCD_WR_REG(0x0053,319);
Lcd_WR_Start();
Set_Rs;
R_data=0;G_data=0;B_data=0;
for(j=0;j<50;j++)
{
for(i=0;i<240;i++)
{R_data=i/8;DataToWrite(R_data<<11|G_data<<5|B_data);
Clr_nWr;Set_nWr;}
}
R_data=0x1f;G_data=0x3f;B_data=0x1f;
for(j=0;j<50;j++)
{
for(i=0;i<240;i++)
{
G_data=0x3f-(i/4);
B_data=0x1f-(i/8);
DataToWrite(R_data<<11|G_data<<5|B_data);
Clr_nWr;
Set_nWr;
}
}
//----------------------------------
R_data=0;G_data=0;B_data=0;
for(j=0;j<50;j++)
{
for(i=0;i<240;i++)
{G_data=i/4;
DataToWrite(R_data<<11|G_data<<5|B_data);
Clr_nWr;
Set_nWr;}
}
R_data=0x1f;G_data=0x3f;B_data=0x1f;
for(j=0;j<50;j++)
{
for(i=0;i<240;i++)
{
R_data=0x1f-(i/8);
B_data=0x1f-(i/8);
DataToWrite(R_data<<11|G_data<<5|B_data);
Clr_nWr;
Set_nWr;
}
}
//----------------------------------
R_data=0;G_data=0;B_data=0;
for(j=0;j<60;j++)
{
for(i=0;i<240;i++)
{B_data=i/8;DataToWrite(R_data<<11|G_data<<5|B_data);
Clr_nWr;
Set_nWr;}
}
B_data=0;
R_data=0x1f;G_data=0x3f;B_data=0x1f;
for(j=0;j<60;j++)
{
for(i=0;i<240;i++)
{
G_data=0x3f-(i/4);
R_data=0x1f-(i/8);
DataToWrite(R_data<<11|G_data<<5|B_data);
Clr_nWr;
Set_nWr;
}
}
Set_Cs;
}
最后，我有一个问题，我不确定它与线程有什么关系，但是如果你看一下图片，就会知道有错误。错误是这样的：
linking...
.
\Obj\Project.axf: Error: L6218E: Undefined symbol q (referred from ili9325.o).
Not enough information to list image symbols.
Finished: 1 information, 0 warning and 1 error messages.
".\Obj\Project.axf" - 1 Error(s), 1 Warning(s).
Target not created
问题是什么？
2 个答案:
答案 0 :(得分：3)
您需要将DrawPixel的原型添加到ILI9325.h：
void DrawPixel(u16 x, u16 y, int Color);
链接期间的错误是由头文件中的此声明引起的：
extern u16 q;
这需要在其中一个.c文件中有相应的全局变量声明，但没有一个。如果确实需要此变量，则需要在某处定义它。如果没有，删除无关的声明。我希望答案是你不需要它 - 单字母外部变量不是一个好主意。
答案 1 :(得分：1)
第1点。要解决隐式声明：
请在标题文件ILI9325.h中添加函数原型，以便ILI9325.c时#include "ILI9325.h"中存在函数转发声明。
void DrawPixel(u16 x, u16 y, int Color);
第2点：解析未定义的符号：
您在标头文件中添加了extern u16 q;，您在q函数中使用了Lcd_Initialize()，但是您没有定义全局 { {1}}代码中的任何位置。
请注意，q是 声明 ，而不是 定义 。这就是为什么你编译器在链接时抱怨extern u16 q。
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