調用puts函數成功：

LCD顯示文字：
LCD_SetColors(LCD_COLOR_BLUE, LCD_COLOR_WHITE);
  LCD_DisplayStringLine_EN_CH(LINE(5), (uint8_t *)"*** 28/03/2016 6:15:01 PM");

The key is down.
The key is down.
The key is down.
The key is down.
The key is down.
This is a string.
This is a string.
The key is down and the number is 1.
The key is down and the number is 2.
The key is down and the number is 3.
The key is down and the number is 4.
The key is down and the number is 5.
The key is down and the number is 6.
The key is down and the number is 7.
The key is down and the number is 8.
The key is down and the number is 9.
The key is down and the number is 10.
The key is down and the number is 11.
The key is down and the number is 12.
The key is down and the number is 13.
The key is down and the number is 14.
The key is down and the number is 15.
The key is down and the number is 16.
The key is down and the number is 17.
The key is down and the number is 18.

void show(void)
{
    static int a = 1;
    printf("The key is down and the number is %d.\n", a);
    a++;
}

目前的情況是：數據能夠正常發送，但是接收到的jpg圖像雖然開頭和結尾的幾個字節是正確的，但是卻無法用圖片查看器打開，文件格式無法識別。