#include "base.h"
#include "delay.h"
#include "flash_manager.h"
#include "lcd_pwm.h"
#include "lcd_rgb.h"
#include "led.h"
#include "mymem.h"
#include "sdram.h"
#include "spi_flash.h"
#include "string.h"
#include "usart.h"

// 定义cmd变量
#define IAP_CMD (*((uint32_t *)0x20000000))
#define IAP_INDEX (*((uint32_t *)0x20000004))
// 定义cmd取值
#define IAP_CMD_UPDATA 0xff000001  // 直接升级user.app
#define IAP_CMD_UPINDEX 0xff000002 // 升级指定序号的程序
#define IAP_CMD_SELECT 0xff000003  // 选择启动方式
#define IAP_CMD_NONE 0x00000000
// 定义用于升级的文件名
#define APP_NAME "user.app"
// 定义用户程序区的起始地址
#define APP_ADDR (0x08000000 + 128 * 1024)

// 定义显示跳跃像素
#define Y_JUMP 16

// 在指定位置显示字符串
static void drawCharsAt(char *txt, int x, int y);
static void jump_app(void);
static void Init(void);
static void FLASH_EraseBySize(uint32_t size);
static void FLASH_WriteBySize(uint8_t *buff, uint32_t size);
static void FLASH_UpData(uint8_t *buff, uint32_t size);
static void iap_cmd_select(void);
static void iap_cmd_updata(void);
static void iap_cmd_upindex(void);

static int x = 0;
static int y = -Y_JUMP;

int main() {
  Init();
  if (IAP_CMD == IAP_CMD_SELECT) {
    iap_cmd_select();
  } else if (IAP_CMD == IAP_CMD_UPDATA) {
    iap_cmd_updata();
  } else if (IAP_CMD == IAP_CMD_UPINDEX) {
    iap_cmd_upindex();
  }
  IAP_CMD = IAP_CMD_NONE;
  jump_app();
  while (1)
    ;
}

//---------------------------------------------------------------
//--------------------LCD显示相关--------------------------------

static const unsigned char g_asc2_1608[95][16] = {
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00}, /*" ",0*/
    {0x00, 0x00, 0x00, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x00, 0x00,
     0x18, 0x18, 0x00, 0x00}, /*"!",1*/
    {0x00, 0x12, 0x36, 0x24, 0x48, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00}, /*""",2*/
    {0x00, 0x00, 0x00, 0x24, 0x24, 0x24, 0xFE, 0x48, 0x48, 0x48, 0xFE, 0x48,
     0x48, 0x48, 0x00, 0x00}, /*"#",3*/
    {0x00, 0x00, 0x10, 0x38, 0x54, 0x54, 0x50, 0x30, 0x18, 0x14, 0x14, 0x54,
     0x54, 0x38, 0x10, 0x10}, /*"$",4*/
    {0x00, 0x00, 0x00, 0x44, 0xA4, 0xA8, 0xA8, 0xA8, 0x54, 0x1A, 0x2A, 0x2A,
     0x2A, 0x44, 0x00, 0x00}, /*"%",5*/
    {0x00, 0x00, 0x00, 0x30, 0x48, 0x48, 0x48, 0x50, 0x6E, 0xA4, 0x94, 0x88,
     0x89, 0x76, 0x00, 0x00}, /*"&",6*/
    {0x00, 0x60, 0x60, 0x20, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00}, /*"'",7*/
    {0x00, 0x02, 0x04, 0x08, 0x08, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x08,
     0x08, 0x04, 0x02, 0x00}, /*"(",8*/
    {0x00, 0x40, 0x20, 0x10, 0x10, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x10,
     0x10, 0x20, 0x40, 0x00}, /*")",9*/
    {0x00, 0x00, 0x00, 0x00, 0x10, 0x10, 0xD6, 0x38, 0x38, 0xD6, 0x10, 0x10,
     0x00, 0x00, 0x00, 0x00}, /*"*",10*/
    {0x00, 0x00, 0x00, 0x00, 0x10, 0x10, 0x10, 0x10, 0xFE, 0x10, 0x10, 0x10,
     0x10, 0x00, 0x00, 0x00}, /*"+",11*/
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x60, 0x60, 0x20, 0xC0}, /*",",12*/
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00}, /*"-",13*/
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x60, 0x60, 0x00, 0x00}, /*".",14*/
    {0x00, 0x00, 0x01, 0x02, 0x02, 0x04, 0x04, 0x08, 0x08, 0x10, 0x10, 0x20,
     0x20, 0x40, 0x40, 0x00}, /*"/",15*/
    {0x00, 0x00, 0x00, 0x18, 0x24, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
     0x24, 0x18, 0x00, 0x00}, /*"0",16*/
    {0x00, 0x00, 0x00, 0x10, 0x70, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10,
     0x10, 0x7C, 0x00, 0x00}, /*"1",17*/
    {0x00, 0x00, 0x00, 0x3C, 0x42, 0x42, 0x42, 0x04, 0x04, 0x08, 0x10, 0x20,
     0x42, 0x7E, 0x00, 0x00}, /*"2",18*/
    {0x00, 0x00, 0x00, 0x3C, 0x42, 0x42, 0x04, 0x18, 0x04, 0x02, 0x02, 0x42,
     0x44, 0x38, 0x00, 0x00}, /*"3",19*/
    {0x00, 0x00, 0x00, 0x04, 0x0C, 0x14, 0x24, 0x24, 0x44, 0x44, 0x7E, 0x04,
     0x04, 0x1E, 0x00, 0x00}, /*"4",20*/
    {0x00, 0x00, 0x00, 0x7E, 0x40, 0x40, 0x40, 0x58, 0x64, 0x02, 0x02, 0x42,
     0x44, 0x38, 0x00, 0x00}, /*"5",21*/
    {0x00, 0x00, 0x00, 0x1C, 0x24, 0x40, 0x40, 0x58, 0x64, 0x42, 0x42, 0x42,
     0x24, 0x18, 0x00, 0x00}, /*"6",22*/
    {0x00, 0x00, 0x00, 0x7E, 0x44, 0x44, 0x08, 0x08, 0x10, 0x10, 0x10, 0x10,
     0x10, 0x10, 0x00, 0x00}, /*"7",23*/
    {0x00, 0x00, 0x00, 0x3C, 0x42, 0x42, 0x42, 0x24, 0x18, 0x24, 0x42, 0x42,
     0x42, 0x3C, 0x00, 0x00}, /*"8",24*/
    {0x00, 0x00, 0x00, 0x18, 0x24, 0x42, 0x42, 0x42, 0x26, 0x1A, 0x02, 0x02,
     0x24, 0x38, 0x00, 0x00}, /*"9",25*/
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00, 0x00, 0x00, 0x00,
     0x18, 0x18, 0x00, 0x00}, /*":",26*/
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x10, 0x10, 0x20}, /*";",27*/
    {0x00, 0x00, 0x00, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x20, 0x10, 0x08,
     0x04, 0x02, 0x00, 0x00}, /*"<",28*/
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFE, 0x00, 0x00, 0x00, 0xFE, 0x00,
     0x00, 0x00, 0x00, 0x00}, /*"=",29*/
    {0x00, 0x00, 0x00, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x04, 0x08, 0x10,
     0x20, 0x40, 0x00, 0x00}, /*">",30*/
    {0x00, 0x00, 0x00, 0x3C, 0x42, 0x42, 0x62, 0x02, 0x04, 0x08, 0x08, 0x00,
     0x18, 0x18, 0x00, 0x00}, /*"?",31*/
    {0x00, 0x00, 0x00, 0x38, 0x44, 0x5A, 0xAA, 0xAA, 0xAA, 0xAA, 0xB4, 0x42,
     0x44, 0x38, 0x00, 0x00}, /*"@",32*/
    {0x00, 0x00, 0x00, 0x10, 0x10, 0x18, 0x28, 0x28, 0x24, 0x3C, 0x44, 0x42,
     0x42, 0xE7, 0x00, 0x00}, /*"A",33*/
    {0x00, 0x00, 0x00, 0xF8, 0x44, 0x44, 0x44, 0x78, 0x44, 0x42, 0x42, 0x42,
     0x44, 0xF8, 0x00, 0x00}, /*"B",34*/
    {0x00, 0x00, 0x00, 0x3E, 0x42, 0x42, 0x80, 0x80, 0x80, 0x80, 0x80, 0x42,
     0x44, 0x38, 0x00, 0x00}, /*"C",35*/
    {0x00, 0x00, 0x00, 0xF8, 0x44, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
     0x44, 0xF8, 0x00, 0x00}, /*"D",36*/
    {0x00, 0x00, 0x00, 0xFC, 0x42, 0x48, 0x48, 0x78, 0x48, 0x48, 0x40, 0x42,
     0x42, 0xFC, 0x00, 0x00}, /*"E",37*/
    {0x00, 0x00, 0x00, 0xFC, 0x42, 0x48, 0x48, 0x78, 0x48, 0x48, 0x40, 0x40,
     0x40, 0xE0, 0x00, 0x00}, /*"F",38*/
    {0x00, 0x00, 0x00, 0x3C, 0x44, 0x44, 0x80, 0x80, 0x80, 0x8E, 0x84, 0x44,
     0x44, 0x38, 0x00, 0x00}, /*"G",39*/
    {0x00, 0x00, 0x00, 0xE7, 0x42, 0x42, 0x42, 0x42, 0x7E, 0x42, 0x42, 0x42,
     0x42, 0xE7, 0x00, 0x00}, /*"H",40*/
    {0x00, 0x00, 0x00, 0x7C, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10,
     0x10, 0x7C, 0x00, 0x00}, /*"I",41*/
    {0x00, 0x00, 0x00, 0x3E, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08,
     0x08, 0x08, 0x88, 0xF0}, /*"J",42*/
    {0x00, 0x00, 0x00, 0xEE, 0x44, 0x48, 0x50, 0x70, 0x50, 0x48, 0x48, 0x44,
     0x44, 0xEE, 0x00, 0x00}, /*"K",43*/
    {0x00, 0x00, 0x00, 0xE0, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,
     0x42, 0xFE, 0x00, 0x00}, /*"L",44*/
    {0x00, 0x00, 0x00, 0xEE, 0x6C, 0x6C, 0x6C, 0x6C, 0x54, 0x54, 0x54, 0x54,
     0x54, 0xD6, 0x00, 0x00}, /*"M",45*/
    {0x00, 0x00, 0x00, 0xC7, 0x62, 0x62, 0x52, 0x52, 0x4A, 0x4A, 0x4A, 0x46,
     0x46, 0xE2, 0x00, 0x00}, /*"N",46*/
    {0x00, 0x00, 0x00, 0x38, 0x44, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82, 0x82,
     0x44, 0x38, 0x00, 0x00}, /*"O",47*/
    {0x00, 0x00, 0x00, 0xFC, 0x42, 0x42, 0x42, 0x42, 0x7C, 0x40, 0x40, 0x40,
     0x40, 0xE0, 0x00, 0x00}, /*"P",48*/
    {0x00, 0x00, 0x00, 0x38, 0x44, 0x82, 0x82, 0x82, 0x82, 0x82, 0xB2, 0xCA,
     0x4C, 0x38, 0x06, 0x00}, /*"Q",49*/
    {0x00, 0x00, 0x00, 0xFC, 0x42, 0x42, 0x42, 0x7C, 0x48, 0x48, 0x44, 0x44,
     0x42, 0xE3, 0x00, 0x00}, /*"R",50*/
    {0x00, 0x00, 0x00, 0x3E, 0x42, 0x42, 0x40, 0x20, 0x18, 0x04, 0x02, 0x42,
     0x42, 0x7C, 0x00, 0x00}, /*"S",51*/
    {0x00, 0x00, 0x00, 0xFE, 0x92, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10,
     0x10, 0x38, 0x00, 0x00}, /*"T",52*/
    {0x00, 0x00, 0x00, 0xE7, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42,
     0x42, 0x3C, 0x00, 0x00}, /*"U",53*/
    {0x00, 0x00, 0x00, 0xE7, 0x42, 0x42, 0x44, 0x24, 0x24, 0x28, 0x28, 0x18,
     0x10, 0x10, 0x00, 0x00}, /*"V",54*/
    {0x00, 0x00, 0x00, 0xD6, 0x92, 0x92, 0x92, 0x92, 0xAA, 0xAA, 0x6C, 0x44,
     0x44, 0x44, 0x00, 0x00}, /*"W",55*/
    {0x00, 0x00, 0x00, 0xE7, 0x42, 0x24, 0x24, 0x18, 0x18, 0x18, 0x24, 0x24,
     0x42, 0xE7, 0x00, 0x00}, /*"X",56*/
    {0x00, 0x00, 0x00, 0xEE, 0x44, 0x44, 0x28, 0x28, 0x10, 0x10, 0x10, 0x10,
     0x10, 0x38, 0x00, 0x00}, /*"Y",57*/
    {0x00, 0x00, 0x00, 0x7E, 0x84, 0x04, 0x08, 0x08, 0x10, 0x20, 0x20, 0x42,
     0x42, 0xFC, 0x00, 0x00}, /*"Z",58*/
    {0x00, 0x1E, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10,
     0x10, 0x10, 0x1E, 0x00}, /*"[",59*/
    {0x00, 0x00, 0x40, 0x40, 0x20, 0x20, 0x10, 0x10, 0x10, 0x08, 0x08, 0x04,
     0x04, 0x04, 0x02, 0x02}, /*"\",60*/
    {0x00, 0x78, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08,
     0x08, 0x08, 0x78, 0x00}, /*"]",61*/
    {0x00, 0x1C, 0x22, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00}, /*"^",62*/
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0xFF}, /*"_",63*/
    {0x00, 0x60, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00}, /*"`",64*/
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3C, 0x42, 0x1E, 0x22, 0x42,
     0x42, 0x3F, 0x00, 0x00}, /*"a",65*/
    {0x00, 0x00, 0x00, 0xC0, 0x40, 0x40, 0x40, 0x58, 0x64, 0x42, 0x42, 0x42,
     0x64, 0x58, 0x00, 0x00}, /*"b",66*/
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1C, 0x22, 0x40, 0x40, 0x40,
     0x22, 0x1C, 0x00, 0x00}, /*"c",67*/
    {0x00, 0x00, 0x00, 0x06, 0x02, 0x02, 0x02, 0x1E, 0x22, 0x42, 0x42, 0x42,
     0x26, 0x1B, 0x00, 0x00}, /*"d",68*/
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3C, 0x42, 0x7E, 0x40, 0x40,
     0x42, 0x3C, 0x00, 0x00}, /*"e",69*/
    {0x00, 0x00, 0x00, 0x0F, 0x11, 0x10, 0x10, 0x7E, 0x10, 0x10, 0x10, 0x10,
     0x10, 0x7C, 0x00, 0x00}, /*"f",70*/
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3E, 0x44, 0x44, 0x38, 0x40,
     0x3C, 0x42, 0x42, 0x3C}, /*"g",71*/
    {0x00, 0x00, 0x00, 0xC0, 0x40, 0x40, 0x40, 0x5C, 0x62, 0x42, 0x42, 0x42,
     0x42, 0xE7, 0x00, 0x00}, /*"h",72*/
    {0x00, 0x00, 0x00, 0x30, 0x30, 0x00, 0x00, 0x70, 0x10, 0x10, 0x10, 0x10,
     0x10, 0x7C, 0x00, 0x00}, /*"i",73*/
    {0x00, 0x00, 0x00, 0x0C, 0x0C, 0x00, 0x00, 0x1C, 0x04, 0x04, 0x04, 0x04,
     0x04, 0x04, 0x44, 0x78}, /*"j",74*/
    {0x00, 0x00, 0x00, 0xC0, 0x40, 0x40, 0x40, 0x4E, 0x48, 0x50, 0x68, 0x48,
     0x44, 0xEE, 0x00, 0x00}, /*"k",75*/
    {0x00, 0x00, 0x00, 0x70, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10,
     0x10, 0x7C, 0x00, 0x00}, /*"l",76*/
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFE, 0x49, 0x49, 0x49, 0x49,
     0x49, 0xED, 0x00, 0x00}, /*"m",77*/
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xDC, 0x62, 0x42, 0x42, 0x42,
     0x42, 0xE7, 0x00, 0x00}, /*"n",78*/
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3C, 0x42, 0x42, 0x42, 0x42,
     0x42, 0x3C, 0x00, 0x00}, /*"o",79*/
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xD8, 0x64, 0x42, 0x42, 0x42,
     0x44, 0x78, 0x40, 0xE0}, /*"p",0*/
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1E, 0x22, 0x42, 0x42, 0x42,
     0x22, 0x1E, 0x02, 0x07}, /*"q",81*/
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xEE, 0x32, 0x20, 0x20, 0x20,
     0x20, 0xF8, 0x00, 0x00}, /*"r",82*/
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3E, 0x42, 0x40, 0x3C, 0x02,
     0x42, 0x7C, 0x00, 0x00}, /*"s",83*/
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x10, 0x7C, 0x10, 0x10, 0x10, 0x10,
     0x10, 0x0C, 0x00, 0x00}, /*"t",84*/
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC6, 0x42, 0x42, 0x42, 0x42,
     0x46, 0x3B, 0x00, 0x00}, /*"u",85*/
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xE7, 0x42, 0x24, 0x24, 0x28,
     0x10, 0x10, 0x00, 0x00}, /*"v",86*/
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xD7, 0x92, 0x92, 0xAA, 0xAA,
     0x44, 0x44, 0x00, 0x00}, /*"w",87*/
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x6E, 0x24, 0x18, 0x18, 0x18,
     0x24, 0x76, 0x00, 0x00}, /*"x",88*/
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xE7, 0x42, 0x24, 0x24, 0x28,
     0x18, 0x10, 0x10, 0xE0}, /*"y",89*/
    {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7E, 0x44, 0x08, 0x10, 0x10,
     0x22, 0x7E, 0x00, 0x00}, /*"z",90*/
    {0x00, 0x03, 0x04, 0x04, 0x04, 0x04, 0x04, 0x08, 0x04, 0x04, 0x04, 0x04,
     0x04, 0x04, 0x03, 0x00}, /*"{",91*/
    {0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08,
     0x08, 0x08, 0x08, 0x08}, /*"|",92*/
    {0x00, 0x60, 0x10, 0x10, 0x10, 0x10, 0x10, 0x08, 0x10, 0x10, 0x10, 0x10,
     0x10, 0x10, 0x60, 0x00}, /*"}",93*/
    {0x30, 0x4C, 0x43, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
     0x00, 0x00, 0x00, 0x00}, /*"~",94*/
};

static uint32_t drawCharAt16(char c, int x, int y) {
  uint8_t buff[24 * 2] = {0};
  for (int t = 0; t < 16; t++)
    buff[t] = g_asc2_1608[c - 0x20][t];
  for (int j = 0; j < 16; j++) {
    for (int i = 0; i < 8; i++) {
      // 只绘制无效窗口内的屏幕
      LCD_DrawPointSafe(x + i, y + j, (buff[j] << i) & 0x80);
    }
  }
  return 8;
}

// 在指定位置显示字符串
static void drawCharsAt(char *txt, int x, int y) {
  if (txt == 0)
    return;
  while (*txt) {
    if ((*txt & 0x80) == 0) {
      x += drawCharAt16(*txt, x, y);
      txt++;
    }
  }
}

static void jump_app(void) {
  // 定义用户程序的起始地址
  void (*user_main)(void);
  if (((*(vu32 *)APP_ADDR) & 0x2FF00000) == 0x20000000) // 检查栈顶地址是否合法.
  {
    NVIC_SetVectorTable(NVIC_VectTab_FLASH, 128 * 1024);
    user_main =
        (void (*)(void)) *
        (vu32 *)(APP_ADDR + 4); // 用户代码区第二个字为程序开始地址(复位地址)
    __set_MSP(
        *(vu32 *)
            APP_ADDR); // 初始化APP堆栈指针(用户代码区的第一个字用于存放栈顶地址)
    user_main();       // 跳转到APP.
  } else {
    // 不存在程序，需要升级
    IAP_CMD = IAP_CMD_SELECT;
    NVIC_SystemReset();
  }
}

static void Init(void) {
  Delay_Init();
  USART3_Init();
  LED_Init();
  Usart_Config();
  SDRAM_Init();
  mymem_init();
  sFLASH_Init();
  printf("Loading。。。\r\n");
  for (int i = 0; i < 10; i++) {
    Delay_ms(10);
    if (USART3_GetKey()) {
      IAP_CMD = IAP_CMD_SELECT;
    }
  }
}

// 根据文件大小擦除flash
static void FLASH_EraseBySize(uint32_t size) {
  const uint16_t sectors_1[] = {
      FLASH_Sector_5, FLASH_Sector_6,  FLASH_Sector_7,  FLASH_Sector_8,
      FLASH_Sector_9, FLASH_Sector_10, FLASH_Sector_11, 0};
  int bank_num = size / (128 * 1024);
  if (size % (128 * 1024))
    bank_num++;

  // 第一个bank擦除
  for (int i = 0; sectors_1[i]; i++) {
    if (i >= bank_num)
      break;
    FLASH_EraseSector(sectors_1[i], VoltageRange_3); // 擦除电压选太高容易失败
  }
  // 第二个bank前面的擦除
  if (bank_num >= 8) {
    FLASH_EraseSector(FLASH_Sector_12, VoltageRange_3);
    FLASH_EraseSector(FLASH_Sector_13, VoltageRange_3);
    FLASH_EraseSector(FLASH_Sector_14, VoltageRange_3);
    FLASH_EraseSector(FLASH_Sector_15, VoltageRange_3);
    FLASH_EraseSector(FLASH_Sector_16, VoltageRange_3);
  }

  const uint16_t sectors_2[] = {
      FLASH_Sector_17, FLASH_Sector_18, FLASH_Sector_19, FLASH_Sector_20,
      FLASH_Sector_21, FLASH_Sector_22, FLASH_Sector_23, 0};
  // 第二个bank擦除
  for (int i = 0; sectors_2[i]; i++) {
    if (i + 8 >= bank_num)
      break;
    FLASH_EraseSector(sectors_2[i], VoltageRange_3);
  }
}

// 一次性写入数据
static void FLASH_WriteBySize(uint8_t *buff, uint32_t size) {
  for (uint32_t i = 0; i < size; i++) {
    FLASH_ProgramByte(APP_ADDR + i, buff[i]);
  }
}

// 升级程序
static void FLASH_UpData(uint8_t *buff, uint32_t size) {
  // 打标记，记录这是通过IAP升级的程序文件
  uint32_t *app = (uint32_t *)buff;
  app[7] = 0x00000001;
  // 把rom大小记录在rom中
  app[9] = size;

  drawCharsAt("FLASH Unlock ...", x, y += Y_JUMP);
  FLASH_Unlock();
  drawCharsAt("Eraseing ...", x, y += Y_JUMP);
  FLASH_EraseBySize(size);
  drawCharsAt("Programing ...", x, y += Y_JUMP);
  FLASH_WriteBySize(buff, size);
  drawCharsAt("FLASH Lock ...", x, y += Y_JUMP);
  FLASH_Lock();
  drawCharsAt("Updata Done, Reboot Later ...", x, y += Y_JUMP);
}

static void iap_cmd_select(void) {
  LCD_Init();
  LCD_LayerInit();
  drawCharsAt("Please Select:", x, y += Y_JUMP);
  drawCharsAt("00. Boot Now", x, y += Y_JUMP);
  drawCharsAt("01. Updata user.app File", x, y += Y_JUMP);

  // 升级flash中存放的程序
  int fileNum = FLASH_GetFileNum();
  char *txt = mymalloc(256);
  int *indexInfo = mymalloc(sizeof(int) * fileNum);
  int appIndex = 0;
  for (int i = 0; i < fileNum; i++) {
    FLASH_FileStruct fileInfo = {0};
    FLASH_GetFileInfo(i, &fileInfo);
    int fileNameLen = strlen(fileInfo.FileName);
    if (strcmp(&fileInfo.FileName[fileNameLen - 4], ".app") == 0) {
      sprintf(txt, "%02d. Updata %s File", 2 + appIndex, fileInfo.FileName);
      indexInfo[appIndex] = i; // 记录索引
      appIndex++;
      drawCharsAt(txt, x, y += Y_JUMP);
    }
  }
  char *staitc_txt = "Your Select is:";
  int my_select = 0;
  int select_maxNum = fileNum + 2;
  drawCharsAt(staitc_txt, x, y += Y_JUMP);
  while (1) {
    uint8_t key = USART3_GetKeyPressed();
    sprintf(txt, "%02d", my_select);
    drawCharsAt(txt, x + strlen(staitc_txt) * 8, y);
    if (key == 0x10) {
      // 上键
      if (my_select > 0) {
        my_select--;
      } else {
        my_select = select_maxNum - 1;
      }
    } else if (key == 0x20) {
      // 下键
      if (my_select < select_maxNum - 1) {
        my_select++;
      } else {
        my_select = 0;
      }
    } else if (key == 0x04) {
      // OK键
      if (my_select == 0) {
        break;
      } else if (my_select == 1) {
        IAP_CMD = IAP_CMD_UPDATA;
        NVIC_SystemReset();
      } else {
        IAP_CMD = IAP_CMD_UPINDEX;
        IAP_INDEX = indexInfo[my_select - 2];
        NVIC_SystemReset();
      }
    }
  }
  myfree(txt);
  myfree(indexInfo);
}

static void iap_cmd_updata(void) {
  LCD_Init();
  LCD_LayerInit();
  drawCharsAt("Init Done ...", x, y += Y_JUMP);
  uint32_t app_size = 0;
  uint32_t app_exAddr = 0;
  uint32_t app_addr = 0;
  drawCharsAt("Find " APP_NAME "...", x, y += Y_JUMP);
  app_exAddr = FLASH_FindFile(APP_NAME, &app_size);

  // 申请内存，加一个文件名的余量
  int exDataLen = strlen(APP_NAME) + 1;
  uint8_t *data = mymalloc(app_size + exDataLen);

  if (app_exAddr && (FLASH_ReadFile(APP_NAME, 0, data, app_size) == app_size)) {
    // 把文件名信息加在rom中
    memcpy(&data[app_size], APP_NAME, exDataLen);
    uint32_t *app = (uint32_t *)data;
    app[8] = APP_ADDR + app_size;

    FLASH_UpData(data, app_size + exDataLen);
  } else {
    drawCharsAt("Can't Find " APP_NAME ", Reboot Later ...", x, y += Y_JUMP);
  }
  myfree(data);
  Delay_ms(10 * 1000);
}

static void iap_cmd_upindex(void) {
  // 根据索引找到文件
  LCD_Init();
  LCD_LayerInit();
  char *txt_buf = mymalloc(256);
  drawCharsAt("Init Done ...", x, y += Y_JUMP);
  uint32_t app_size = 0;
  uint32_t app_exAddr = 0;
  uint32_t app_addr = 0;
  FLASH_FileStruct file = {0};
  sprintf(txt_buf, "Find File By Index %d...", IAP_INDEX);
  drawCharsAt(txt_buf, x, y += Y_JUMP);
  if (FLASH_GetFileInfo(IAP_INDEX, &file) == 0) {
    sprintf(txt_buf, "File Name is: %s...", file.FileName);
    drawCharsAt(txt_buf, x, y += Y_JUMP);
    app_exAddr = file.Address;
    app_size = file.FileSize;

    // 申请内存，加一个文件名的余量
    int exDataLen = strlen(file.FileName) + 1;
    uint8_t *data = mymalloc(app_size + exDataLen);

    FLASH_ReadFile(file.FileName, 0, data, app_size);
    // 把文件名信息加在rom中
    memcpy(&data[app_size], file.FileName, exDataLen);
    uint32_t *app = (uint32_t *)data;
    app[8] = APP_ADDR + app_size;

    FLASH_UpData(data, app_size + exDataLen);
    myfree(data);
  } else {
    sprintf(txt_buf, "Can't Find File By Index %d...", IAP_INDEX);
    drawCharsAt(txt_buf, x, y += Y_JUMP);
    drawCharsAt("Reboot Later ...", x, y += Y_JUMP);
  }
  myfree(txt_buf);
  Delay_ms(10 * 1000);
}

extern void LTDC_ISR_Handler(void);

//	函数:LTDC中断服务函数
//	说明：在emWin_Drive.c里被调用
//
void LTDC_IRQHandler(void) { LTDC_ISR_Handler(); }