XMC — NAND Flash

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#include "xmc_ecc.h"
#include "at32f403a_407_board.h"
#include "at32f403a_407_clock.h"

int main(void)
{
  /* configure the system clock */
  system_clock_config();

  /* led initalization */
  at32_board_init();

  /* usart initalization */
  uart_print_init(115200);

  /* get system clock */
  crm_clocks_freq_get(&crm_clocks_freq_struct);

  /* xmc initialization */
  nand_init();

  /* nand reset command */
  nand_reset();
  delay_us(10);

  /* nand read id command */
  nand_read_id(&nand_id_struct);

  /* verify the nand id */
  /* nand support:spansion:s34ml01g100tfi003  micron:mt29f16g08cbaca  sandisk:sdtnqgama-008g  toshiba:tc58teg6ddkta00   samsung:k9gag08u0e-scb0   hynix:h27u1g8f2ctr
                  id      :0x01f1001d         id    :0x2c48044a       id     :0x45de9493      id     :0x98de9493        id     :0xecd58472        id   :0xadf1801d
  */
  if((nand_id_struct.maker_id == NAND_AT_MakerID) && (nand_id_struct.device_id == NAND_AT_DeviceID))
  {
    /* nand memory address to write to */
    write_read_addr_struct.zone  = 0x00;
    write_read_addr_struct.block = 0x00;
    write_read_addr_struct.page  = 0x00;
    write_read_addr_struct.byte  = 0x00;

    /* erase the nand first block */
    status = nand_erase_block(write_read_addr_struct);

    /* write data to xmc nand memory */
    /* fill the buffer to send */
    fill_buffer(tx_buffer, BUFFER_SIZE , 0x0);

    /* change the regular to make ecc value isn't 0 */
    tx_buffer[10]=0x03;

     /* calculate ecc value while transmiting */
    xmc_nand_ecc_enable(XMC_BANK2_NAND, TRUE);
    status = nand_write_small_page(tx_buffer, write_read_addr_struct, page_number);

    /* save the right ecc_value (in this case ,we suppose it as the true value) */
    ecc_value_write_last = ecc_value_write;

    /* change the 85 data like there is a 1 bit error happened */
    status = nand_erase_block(write_read_addr_struct);
    tx_buffer[10]=0x23;
    status = nand_write_small_page(tx_buffer, write_read_addr_struct, page_number);

    /* calculate ecc value while transmiting */
    xmc_nand_ecc_enable(XMC_BANK2_NAND, TRUE);

    /* read back the written data */
    status = nand_read_small_page (rx_buffer, write_read_addr_struct, page_number);

    /* ecc check and correct 1 bit error */
    nand_ecc_correction(rx_buffer ,ecc_value_write_last ,ecc_value_read);

    if(rx_buffer[10]==0x03)
    {
      printf("ecc is work\r\n");
    }
    else
    {
      printf("ecc is not work\r\n");
    }
  }
  else
  {
    printf("the id is error\r\n");
  }

  while(1)
  {
  }
}