spi_flash.h File Reference

WINC1500 SPI Flash.

This file describe SPI flash APIs, how to use it and limitations with each one.

Copyright (c) 2016-2018 Microchip Technology Inc. and its subsidiaries.

Example

This example illustrates a complete guide of how to use these APIs.

                #include "spi_flash.h"

                #define DATA_TO_REPLACE "THIS IS A NEW SECTOR IN FLASH"

                int main()
                {
                    uint8   au8FlashContent[FLASH_SECTOR_SZ] = {0};
                    uint32  u32FlashTotalSize = 0;
                    uint32  u32FlashOffset = 0;
   
                    ret = m2m_wifi_download_mode();
                    if(M2M_SUCCESS != ret)
                    {
                        printf("Unable to enter download mode\r\n");
                    }
                    else
                    {
                        u32FlashTotalSize = spi_flash_get_size();
                    }

                    while((u32FlashTotalSize > u32FlashOffset) && (M2M_SUCCESS == ret))
                    {
                        ret = spi_flash_read(au8FlashContent, u32FlashOffset, FLASH_SECTOR_SZ);
                        if(M2M_SUCCESS != ret)
                        {
                            printf("Unable to read SPI sector\r\n");
                            break;
                        }
                        memcpy(au8FlashContent, DATA_TO_REPLACE, strlen(DATA_TO_REPLACE));
    
                        ret = spi_flash_erase(u32FlashOffset, FLASH_SECTOR_SZ);
                        if(M2M_SUCCESS != ret)
                        {
                            printf("Unable to erase SPI sector\r\n");
                            break;
                        }
    
                        ret = spi_flash_write(au8FlashContent, u32FlashOffset, FLASH_SECTOR_SZ);
                        if(M2M_SUCCESS != ret)
                        {
                            printf("Unable to write SPI sector\r\n");
                            break;
                        }
                        u32FlashOffset += FLASH_SECTOR_SZ;
                    }
   
                    if(M2M_SUCCESS == ret)
                    {
                        printf("Successful operations\r\n");
                    }
                    else
                    {
                        printf("Failed operations\r\n");
                    }
   
                    while(1);
                    return M2M_SUCCESS;
                }
* 

#include "common/include/nm_common.h"
#include "bus_wrapper/include/nm_bus_wrapper.h"
#include "driver/source/nmbus.h"
#include "driver/source/nmasic.h"

Macros
#define	FLASH_SECTOR_SZ   (4 * 1024UL)

Functions
sint8	spi_flash_enable (uint8 enable)
sint8	spi_flash_erase (uint32 u32Offset, uint32 u32Sz)
	Erase a specified portion of SPI Flash. . More...
uint32	spi_flash_get_size (void)
	Get size of SPI Flash. More...
sint8	spi_flash_read (uint8 *pu8Buf, uint32 u32Addr, uint32 u32Sz)
	Read a specified portion of data from SPI Flash. . More...
sint8	spi_flash_write (uint8 *pu8Buf, uint32 u32Offset, uint32 u32Sz)
	Write a specified portion of data to SPI Flash. . More...

#define FLASH_SECTOR_SZ   (4 * 1024UL)

Sector Size in Flash Memory

Referenced by m2m_ota_host_file_read_spi(), spi_flexible_flash_find_section(), and WriteTlsCertificate().

sint8 spi_flash_enable

(

uint8

enable

)

References M2M_SUCCESS, nm_read_reg_with_ret(), nm_write_reg(), nmi_get_chipid(), REV, REV_3A0, spi_flash_enter_low_power_mode(), and spi_flash_leave_low_power_mode().

Referenced by nm_drv_deinit().