我用串口向spi flash 里面写入了汉字字库，但是我不知道有没有写入成功，取出来的字是乱码的？怎么检查有没有写入成功啊？
#include "stm32f10x_conf.h"
#include "bsp_ili9341_lcd.h"
#include "bsp_led.h"
//#include "tupian.h"
#include "spi_flash.h"
#include "bsp_usart1.h"
#include "stdio.h"

void Delay(uint32_t N)
{
int i;
for(i=0;i<N;i--);
}
//???¨?ò???? usart1
int fputc(int ch, FILE *f)
{
/* ?????????USART1 */
USART_SendData(USART1, (uint8_t) ch);

/* ?????? */
while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
USART_ClearFlag( USART1, USART_FLAG_TXE);

return (ch);
}
///???c???scanf?USART1
int fgetc(FILE *f)
{
/* ????1???? */
while (USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == RESET);
USART_ClearFlag(USART1,USART_FLAG_RXNE);
return (int)USART_ReceiveData(USART1);
}
void GetGBKCode(unsigned char* pBuffer,unsigned char * c)
{ 
   unsigned char High8bit,Low8bit; 
   High8bit=*c;     /* ????8?????? */
   Low8bit=*(c+1);  /* ????8?????? */
SPI_FLASH_PageWrite(pBuffer,(94*(High8bit-0xa0-1)+(Low8bit-0xa0-1))*32,32);

 // SPI_FLASH_BufferWrite(pBuffer,((High8bit-0xb0)*94+Low8bit-0xa1)*64,64);
printf(" ??W25x16 SPI FLASH????????????: %s",pBuffer);

}
  
void PutChinese(uint16_t Xpos,uint16_t Ypos,uint8_t *str,uint16_t Color,uint16_t bkColor)
{
uint8_t i=0,j=0;
uint8_t buffer[32];

GetGBKCode(buffer,str);  /* ??×??????? */

for (i=0;i<16;i++)
{
for(j=0;j<8;j++)
{
if ( (buffer[i*2] >> 7-j) & 0x01 == 0x01)
{
LCD_SetPoint(Xpos+i,Ypos+j,Color);  /* ×?·????? */
}
else
{
LCD_SetPoint(Xpos+i,Ypos+j,bkColor);  /* ±??°???? */
}
if ( (buffer[i*2+1] >> 7-j) & 0x01 == 0x01)
{
LCD_SetPoint(Xpos+i,Ypos+j+8,Color);  /* ×?·????? */
}
else
{
LCD_SetPoint(Xpos+i,Ypos+j+8,bkColor);  /* ±??°???? */
}
}
}
}
void GUI_Chinese(uint16_t Xpos, uint16_t Ypos, uint8_t *str,uint16_t Color, uint16_t bkColor)
{
  do
  {
    PutChinese(Xpos,Ypos,str++,Color,bkColor);
str++;
   if (Ypos<304)
    {
      Ypos+=16;
    }
    else if (Xpos<224)
    {
      Ypos=0;
      Xpos+=16;
    }
    else
    {
      Xpos=0;
      Ypos=0;
    }       
  }
  while(*str!=0);
}
int main()
{
// int i,num;
   LCD_Init();
Lcd_GramScan(1);
LED_GPIO_Config();
LCD_Clear(0,0,240,320,BLUE);
USART1_Config();
NVIC_Config();
   SPI_GPIO_Config();
// SPI_flash_Sectorall();
 
LED1_ON;
LED2_ON;
LED3_ON;
   printf("???ò????????");
GUI_Chinese(20,20,"????",YELLOW,BLACK);
while(1)
{

  }
}