spi_flexible_flash_find_section

Functions
sint8	spi_flash_read (uint8 *pu8Buf, uint32 u32Addr, uint32 u32Sz)
	Read a specified portion of data from SPI Flash. . More...
sint8	spi_flexible_flash_find_section (uint16 u16EntryIDToLookFor, uint32 *pu32StartOffset, uint32 *pu32Size)
	Read the Flash Map to extract the host file starting offset. . More...

sint8 spi_flash_read	(	uint8 *	pu8Buf,
		uint32	u32offset,
		uint32	u32Sz
	)

Read a specified portion of data from SPI Flash.
.

Parameters

[out]	pu8Buf	Pointer to data buffer which will fill in with data in case of successful operation.
[in]	u32Addr	Address (Offset) to read from at the SPI flash.
[in]	u32Sz	Total size of data to be read in bytes

Warning

• Address (offset) plus size of data must not exceed flash size.
  
• No firmware is required for reading from 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

Note

• It is blocking function
  

See Also

m2m_wifi_download_mode, spi_flash_get_size

Returns

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

References FLASH_BLOCK_SIZE, M2M_SUCCESS, and spi_flash_read_internal().

Referenced by m2m_ota_host_file_read_spi(), and spi_flexible_flash_find_section().

sint8 spi_flexible_flash_find_section	(	uint16	u16EntryIDToLookFor,
		uint32 *	pu32StartOffset,
		uint32 *	pu32Size
	)

Read the Flash Map to extract the host file starting offset.
.

Parameters

[in]	u16EntryIDToLookFor	The ID of the location in Flash we are looking for. See tenuFlashLUTEntryID.
[in]	pu32StartOffset	Pointer to the variable where the Flash section start address should be stored.
[in]	pu32Size	Pointer to the variable where the Flash section size should be stored.

Warning

In case there is a running WINC firmware, it is required to pause the firmware first before any trial to access SPI flash to avoid any racing between host and running firmware on bus. m2m_wifi_download_mode can be used to pause the firmware.

See Also

m2m_wifi_download_mode m2m_wifi_init_hold

Returns

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

References FLASH_MAP_TABLE_ADDR, FLASH_SECTOR_SZ, M2M_ERR_FAIL, M2M_ERR_INVALID_ARG, M2M_SUCCESS, N_ENTRIES_MAX, NULL, and spi_flash_read().

Referenced by m2m_ota_host_file_read_spi().