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 click, USB 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.