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mikroSDK Library

Excelon-LP click

Rating:

5

Author: MikroElektronika Team

Last Updated: 2018-08-17

Category: Storage

Downloaded: 379 times

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Excelon LP click carries a ferroelectric RAM module. Ferroelectric RAM, also known as FRAM, is a non-volatile memory type, with characteristics comparable to much faster DRAM memory modules. It is a much faster alternative to common serial FLASH and EEPROM modules which use the conventional technologies.

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mikroSDK Library Blog

Excelon-LP click

Excelon-LP click

Native view of the Excelon-LP click board.

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Excelon-LP click

Excelon-LP click

Front and back view of the Excelon-LP click board.

View full image

Library Description

The library initializes and defines the SPI bus driver and drivers that offer a choice for writing data in memory and reading data from memory.

Key functions:

  • void excelonlp_sendCommand(uint8_t opcode) - Functions for send opcode command

void excelonlp_readData(uint8_t opcode, uint8_t *OUTBuf, uint8_t nData)

  •  - Functions for read data

void excelonlp_writeMemoryData(uint8_t opcode, uint32_t addr, uint8_t _data)

  •  - Functions for write data to memory

uint8_t excelonlp_readMemoryData(uint8_t opcode, uint32_t addr)

  •  - Functions for read data form memory

Examples description

The application is composed of the three sections :

  • System Initialization - Initializes SPI module and set CS and PWM pin as OUTPUT
  • Application Initialization - Initializes Driver init
  • Application Task - (code snippet) - Reads device ID, writes 6-bytes (MikroE) to memory and reads 6-bytes from memory
void applicationTask()
{
    mikrobus_logWrite("Read Device ID : ", _LOG_TEXT);
    excelonlp_sendCommand(_EXCELONLP_OPCODE_SET_WRITE_ENABLE_LATCH);
    excelonlp_readData(_EXCELONLP_OPCODE_READ_DEVICE_ID, &OUTBuf[0], 9);
    
    for(cnt = 0; cnt < 9; cnt++)
    {
        IntToHex(OUTBuf[cnt], demoText);
        mikrobus_logWrite(" 0x", _LOG_TEXT);
        mikrobus_logWrite(demoText, _LOG_TEXT);
        Delay_100ms();
    }
    mikrobus_logWrite(" ", _LOG_LINE);

   mikrobus_logWrite("Write MikroE data.", _LOG_LINE);
   excelonlp_sendCommand(_EXCELONLP_OPCODE_SET_WRITE_ENABLE_LATCH);
   for(cnt = 0; cnt < 6; cnt++)
   {
        excelonlp_sendCommand(_EXCELONLP_OPCODE_SET_WRITE_ENABLE_LATCH);
        excelonlp_writeMemoryData(_EXCELONLP_OPCODE_WRITE_MEMORY_DATA, 
                                  memoryAddress++, sendBuffer[cnt]);
        Delay_100ms();
   }
   memoryAddress = 0x00000055;
   mikrobus_logWrite("Read memory data : ", _LOG_TEXT);
   for(cnt = 0; cnt < 6; cnt++)
   {
       MemoryData[0] = excelonlp_readMemoryData(_EXCELONLP_OPCODE_READ_MEMORY_DATA, 
                                                memoryAddress++);
       mikrobus_logWrite(MemoryData, _LOG_TEXT);
       Delay_100ms();
   }
   Delay_ms( 5000 );
}

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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