m2m_flash.c File Reference

WINC Flash Interface.

Copyright (c) 2017-2019 Microchip Technology Inc. and its subsidiaries.

#include "driver/include/m2m_flash.h"
#include "spi_flash/include/spi_flash.h"
#include "spi_flash/include/spi_flash_map.h"
#include "driver/source/nmdrv.h"

Data Structures
struct	tstrFlashMapEntry

Functions
static uint8	crc7 (uint8 crc, const uint8 *buff, uint16 len)
static bool	find_flash_section (tenuWincFlashRegion enuRegion, uint32 *pu32StartAddr, uint32 *pu32Size)
sint8	m2m_flash_erase_sector (tenuWincFlashRegion enuRegion, uint8 u8StartSector, uint8 u8NumSectors)
	Erase one or more sectors within a WINC flash region. More...
sint8	m2m_flash_read (tenuWincFlashRegion enuRegion, void *pvBuffer, uint32 u32Offset, uint32 u32Size)
	Read the number of bytes specified from a WINC flash location. More...
sint8	m2m_flash_switch_firmware (void)
	Switch the active and inactive firmware images. More...
sint8	m2m_flash_write (tenuWincFlashRegion enuRegion, void *pvBuffer, uint32 u32Offset, uint32 u32Size)
	Write the number of bytes specified to a WINC flash location. More...
static sint8	read_control_structure (tstrOtaControlSec *pstrControlSec)
static sint8	update_control_structure (tstrOtaControlSec *pstrControlSec)
static sint8	verify_control_structure (tstrOtaControlSec *pstrControlSec)
static sint8	winc_flash_compare (uint8 *pu8Buf, uint32 u32Offset, uint32 u32Size)
static sint8	winc_flash_write_verify (uint8 *pu8Buf, uint32 u32Offset, uint32 u32Size)

Variables
static const tstrFlashMapEntry	flashMap []

static uint8 crc7 ( uint8  crc, const uint8 *  buff, uint16  len  )

static

Referenced by update_control_structure(), and verify_control_structure().

static bool find_flash_section ( tenuWincFlashRegion  enuRegion, uint32 *  pu32StartAddr, uint32 *  pu32Size  )

static

References tstrFlashMapEntry::address, M2M_HTTP_MEM_FLASH_OFFSET, M2M_INFO, M2M_OTA_IMAGE1_OFFSET, M2M_SUCCESS, nm_get_state(), NM_STATE_INIT, NULL, read_control_structure(), tstrFlashMapEntry::size, spi_flash_get_size(), tstrOtaControlSec::u32OtaCurrentWorkingImagOffset, tstrOtaControlSec::u32OtaRollbackImageOffset, WINC_FLASH_NUM_REGIONS, WINC_FLASH_REGION_FIRMWARE_ACTIVE, WINC_FLASH_REGION_FIRMWARE_INACTIVE, WINC_FLASH_REGION_HTTP_FILES, and WINC_FLASH_REGION_RAW.

Referenced by m2m_flash_erase_sector(), m2m_flash_read(), and m2m_flash_write().

static sint8 read_control_structure ( tstrOtaControlSec *  pstrControlSec )

static

References M2M_BACKUP_FLASH_OFFSET, M2M_CONTROL_FLASH_OFFSET, M2M_SUCCESS, spi_flash_read(), and verify_control_structure().

Referenced by find_flash_section(), and m2m_flash_switch_firmware().

static sint8 update_control_structure ( tstrOtaControlSec *  pstrControlSec )

static

References crc7(), M2M_BACKUP_FLASH_OFFSET, M2M_BACKUP_FLASH_SZ, M2M_CONTROL_FLASH_OFFSET, M2M_CONTROL_FLASH_SZ, M2M_ERR_FAIL, M2M_SUCCESS, spi_flash_erase(), tstrOtaControlSec::u32OtaControlSecCrc, tstrOtaControlSec::u32OtaSequenceNumber, and winc_flash_write_verify().

Referenced by m2m_flash_switch_firmware().

static sint8 verify_control_structure ( tstrOtaControlSec *  pstrControlSec )

static

References crc7(), M2M_ERR_FAIL, M2M_SUCCESS, OTA_MAGIC_VALUE, tstrOtaControlSec::u32OtaControlSecCrc, and tstrOtaControlSec::u32OtaMagicValue.

Referenced by read_control_structure().

static sint8 winc_flash_compare ( uint8 *  pu8Buf, uint32  u32Offset, uint32  u32Size  )

static

References m2m_memcmp(), M2M_SUCCESS, and spi_flash_read().

Referenced by winc_flash_write_verify().

static sint8 winc_flash_write_verify ( uint8 *  pu8Buf, uint32  u32Offset, uint32  u32Size  )

static

References M2M_ERR_FAIL, M2M_SUCCESS, spi_flash_write(), and winc_flash_compare().

Referenced by update_control_structure().

const tstrFlashMapEntry flashMap[]

static

Initial value:

=
{
    {0                              , 0                                 },  
    {0                              , OTA_IMAGE_SIZE                    },  
    {0                              , OTA_IMAGE_SIZE                    },  
    {M2M_PLL_FLASH_OFFSET           , M2M_PLL_FLASH_SZ                  },  
    {M2M_GAIN_FLASH_OFFSET          , M2M_GAIN_FLASH_SZ                 },  
    {M2M_PLL_FLASH_OFFSET           , M2M_PLL_FLASH_SZ+M2M_GAIN_FLASH_SZ},  
    {M2M_TLS_ROOTCER_FLASH_OFFSET   , M2M_TLS_ROOTCER_FLASH_SZ          },  
    {M2M_TLS_SERVER_FLASH_OFFSET    , M2M_TLS_SERVER_FLASH_SZ           },  
    {M2M_CACHED_CONNS_FLASH_OFFSET  , M2M_CACHED_CONNS_FLASH_SZ         },  
    {0                              , M2M_HTTP_MEM_FLASH_SZ             },  
}