nand flash(进价)——通过串口写nand flash

#include "uart.h"
#include <types.h>

void nand_read_test(void)
{
 int i;
 char buf[100];
 unsigned long addr;
 unsigned long size;
 
 printf("enter the start address: ");
 scanf("%s", buf);
 addr = strtoul(buf, NULL, 0);
 printf("read addr = 0x%x\n\r", addr);

 printf("enter the size: ");
 scanf("%s", buf);
 size = strtoul(buf, NULL, 0);

 if (size > 100)
 {
  printf("the max size is 100\n\r");
  size = 100;
 }

 nand_read(addr, buf, size);

 printf("datas: \n\r");
 for (i = 0; i < size; i++)
 {
  printf("%02x ", buf[i]);
  if ((i+1) % 16 == 0)
  {
   printf("\n\r");
  }
 }
 printf("\n\r");
}

void nand_erase_test(void)
{
 char buf[100];
 unsigned long addr;
 
 printf("enter the start address: ");
 scanf("%s", buf);
 addr = strtoul(buf, NULL, 0);
 printf("erase addr = 0x%x\n\r", addr);

 nand_erase_block(addr);
 
}

void nand_write_test(void)
{
 char buf[100];
 unsigned long addr;
 unsigned long size;
 
 printf("enter the start address: ");
 scanf("%s", buf);
 addr = strtoul(buf, NULL, 0);

 printf("enter the string: ");
 scanf("%s", buf);

 size = strlen(buf) + 1;

 nand_write(addr, buf, size);
 
}

void update_program(void)
{
 unsigned char *buf = (unsigned char *)0x52000000;
 unsigned long len = 0;
 int have_begin = 0;
 int nodata_time = 0;
 unsigned char c;

 /* 读串口获得数据 */
 printf("\n\ruse gtkterm to send file\n\r", len);
 while (1)
 {
  if (getc_nowait(&buf[len]) == 0)
  {
   have_begin = 1;
   nodata_time = 0;
   len++;
  }
  else
  {
   if (have_begin)
   {
    nodata_time++;
   }   
  }

  if (nodata_time == 1000)
  {
   break;
  }
 }
 printf("have get %d bytes data\n\r", len);
 printf("press y to program: ");
 c = getc();
 if (c == 'y' || c == 'Y')
 { 
  /* 烧写到nand flash block 0 */
  nand_erase_block(0);
  nand_write(0, buf, len);
  
  printf("update program successful\n\r");
 }
 else
 {
  printf("update program cancel\n\r");
 }
}

void run_program(void)
{
 unsigned char *buf = (unsigned char *)0x52000000;
 unsigned long len = 0;
 int have_begin = 0;
 int nodata_time = 0;
 void (*theProgram)(void);

 /* 读串口获得数据 */
 printf("\n\ruse gtkterm to send file\n\r", len);
 while (1)
 {
  if (getc_nowait(&buf[len]) == 0)
  {
   have_begin = 1;
   nodata_time = 0;
   len++;
  }
  else
  {
   if (have_begin)
   {
    nodata_time++;
   }   
  }

  if (nodata_time == 1000)
  {
   break;
  }
 }
 printf("have get %d bytes data\n\r", len);

 printf("jump to 0x52000000 to run it\n\r");
 
 theProgram = (void (*)(void))0x52000000;

 theProgram();  
}

 

int main()
{
 char c;
 
 init_uart();
 printf("can update program with serial port\n\r");

 while (1)
 {
#if 1  
  printf("[w] write the nand flash\n\r");
  printf("[r] read the nand flash\n\r");
  printf("[e] erase the nand flash\n\r");
  printf("[g] get file, and write to nand flash 0 block\n\r");
  printf("[x] get file to ddr(0x52000000), run it\n\r");
#else
  printf("[w] \n\r");
  printf("[r] \n\r");
  printf("[e] \n\r");
  printf("[g] \n\r");
  printf("[x] \n\r");
#endif  
  do {
   c = getc();
   if (c == '\n' || c == '\r')
   {
    printf("\n\r");
   }
   else
   {
    putc(c);
   }
  } while (c == '\n' || c == '\r');
  
  switch (c)
  {
   case 'w':
   case 'W':
   {
    nand_write_test();
    break;
   }

   case 'r':
   case 'R':
   {
    nand_read_test();
    break;
   }

   case 'e':
   case 'E':
   {
    nand_erase_test();
    break;
   }

   case 'g':
   case 'G':
   {
    update_program();
    break;
   }

   case 'x':
   case 'X':
   {
    run_program();
    break;
   }
   
  }
 }
 
 return 0;
}