To read and write SPI Flash using Freertos SDk in ESP8266
Posted: Thu Feb 25, 2016 11:38 amHi,
I need to read and write data from SPI flash. I am using spi_flash_read and spi_flash_write API's for read and write data. Both read and write data returns success response but unable to print the read data which was stored. Please provide me a solution to get the data which was saved.
I need to read and write data from SPI flash. I am using spi_flash_read and spi_flash_write API's for read and write data. Both read and write data returns success response but unable to print the read data which was stored. Please provide me a solution to get the data which was saved.
Code: Select all
save_data(const char *name)
{
char buff[4]={0};
int result = -1;
uint64_t temp;
char *start;
strcpy(buff,name);
result = spi_flash_write(0x5C000,(uint32*)&buff,1);
if(result == SPI_FLASH_RESULT_ERR)
{
printf("\nWrite failed...\n");
}
else if(result == SPI_FLASH_RESULT_OK)
{
printf("\nWrite success...\n");
read_data();
}
}
read_data()
{
int result = -1;
char buff[5] = {0};
result= spi_flash_read(0x5C000,(uint32*)&buff,5);
if(result == SPI_FLASH_RESULT_ERR)
{
printf("\nRead failed...321\n");
}
else if(result == SPI_FLASH_RESULT_OK)
{
printf("\nRead success...\n");
printf("Data : %s\n",buff); /*PRINTS A GARBAGE VALUE*/
}
}