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mikroSDK Library

Flash 4 click

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Author: MikroElektronika Team

Last Updated: 2018-10-15

Category: Storage

Downloaded: 50 times

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Flash 4 click is a perfect solution for the mass storage option in various embedded applications. With fast performance being one of its key features, Flash 4 click can also be used for the code shadowing, execution-in-place (XIP), and data storage.

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mikroSDK Library Blog

Flash 4 click

Flash 4 click

Native view of the Flash 4 click board.

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Flash 4 click

Flash 4 click

Front and back view of the Flash 4 click board.

View full image

Library Description

The library contains all the necessary functions for working with Flash 4 click.

Key functions:

  • void flash4_writeCommand(uint8_t cmd) - Functions for write command
  • void flash4_4ReadFlash (uint8_t *outData, uint32_t addr, uint8_t nData) - Functions for read Flash, with 4 byte address
  • void flash4_4PageProgram (uint8_t *inData, uint32_t addr, uint8_t nData) - Functions for write data in Flash, with 4 byte address

Examples description

The application is composed of the three sections :

  • System Initialization - Initializes SPI Module and sets RST pin and CS pin as OUTPUT
  • Application Initialization - Initialization driver init and reset device
  • Application Task - (code snippet) - Erases memory at 0x00001234. Writes a message (MikroElektronika) to address 0x00001234. Then reads the data from the address 0x00001234.
void applicationTask()
{
    flash4_writeCommand(_FLASH4_CMD_WRITE_ENABLE_WREN);
    mikrobus_logWrite("--- Erase chip --START--", _LOG_LINE);
    flash4_4sectorErase(0x00001234);
    while(flash4_checkWIP());
    mikrobus_logWrite("--- Erase chip --DONE--", _LOG_LINE);
    
    flash4_writeCommand(_FLASH4_CMD_WRITE_ENABLE_WREN);
    flash4_4PageProgram(&dataBuffer[0], 0x00001234, 16);
    while(flash4_checkWIP());
    Delay_100ms();
    
    flash4_4ReadFlash(&readBuffer[0],0x00001234, 16);
    while(flash4_checkWIP());
    mikrobus_logWrite("--- Read buffer : ", _LOG_TEXT);
    mikrobus_logWrite(readBuffer, _LOG_LINE);
    
    Delay_ms( 7000 );
}

Other mikroE Libraries used in the example:

  • SPI

Additional notes and information

Depending on the development board you are using, you may need USB UART clickUSB UART 2 click or RS232 click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all MikroElektronika compilers, or any other terminal application of your choice, can be used to read the message.

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