spi_flash_write

Functions
sint8	spi_flash_write (uint8 *pu8Buf, uint32 u32Offset, uint32 u32Sz)
	Write a specified portion of data to SPI Flash. . More...

sint8 spi_flash_write	(	uint8 *	pu8Buf,
		uint32	u32Offset,
		uint32	u32Sz
	)

Write a specified portion of data to SPI Flash.
.

Parameters

[in]	pu8Buf	Pointer to data buffer which contains the data to be written.
[in]	u32Offset	Address (Offset) to write at the SPI flash.
[in]	u32Sz	Total number of size of data bytes

Note

• It is blocking function
  
• It is user's responsibility to verify that data has been written successfully by reading data again and comparing it with the original.

Warning

• Address (offset) plus size of data must not exceed flash size.
  
• No firmware is required for writing to SPI flash.
  
• In case of there is a running firmware, it is required to pause your firmware first before any trial to access SPI flash to avoid any racing between host and running firmware on bus using m2m_wifi_download_mode.
• Before writing to any section, it is required to erase that section first.

See Also

m2m_wifi_download_mode, spi_flash_get_size, spi_flash_erase

Returns

The function returns M2M_SUCCESS for successful operations and a negative value otherwise.

Parameters

[in]	pu8Buf	Pointer to data buffer which contains the required to be written.
[in]	u32Offset	Address (Offset) to write at the SPI flash.
[in]	u32Sz	Total number of size of data bytes

Note

• It is blocking function
  
• It is user's responsibility to verify that data has been written successfully by reading data again and compare it with the original.

Warning

• Address (offset) plus size of data must not exceed flash size.
  
• No firmware is required for writing to SPI flash.
  
• In case of there is a running firmware, it is required to pause your firmware first before any trial to access SPI flash to avoid any racing between host and running firmware on bus using m2m_wifi_download_mode.
• Before writing to any section, it is required to erase it first.

See Also

m2m_wifi_download_mode, spi_flash_get_size, spi_flash_erase

Returns

The function returns M2M_SUCCESS for successful operations and a negative value otherwise.

References BSP_MIN, FLASH_PAGE_SZ, M2M_ERR, M2M_ERR_FAIL, M2M_PRINT, M2M_SUCCESS, printf, ret, and spi_flash_pp().

Referenced by m2m_flash_write(), and winc_flash_write_verify().