/* SPI EEPROM 25LC256 Demo */

// ------- Preamble -------- //
#include <avr/io.h>
#include <util/delay.h>

#include "pinDefines.h"

#include "USART.h"
#include "25LC256.h"

int main(void) {
  uint8_t i;
  uint8_t address;

  // -------- Inits --------- //
  initSPI();
  initUSART();

  // ------ Event loop ------ //
  while (1) {
    printString("\r\n====  EEPROM Memory Playground ====\r\n");
    printString("Address  Value\r\n");

    for (i = 0; i < 10; i++) {  /* print out first ten bytes of memory */
      printString("  ");
      printByte(i);
      printString("     ");
      printByte(EEPROM_readByte(i));
      printString("\r\n");
    }
    printString(" [e] to erase all memory\r\n");
    printString(" [w] to write byte to memory\r\n\r\n");

    switch (receiveByte()) {                             /* take input */
    case 'e':
      printString("Clearing EEPROM, this could take a few seconds.\r\n");
      EEPROM_clearAll();
      break;
    case 'w':
      printString("Which memory slot would you like to write to?\r\n");
      address = getNumber();
      printString("\r\nWhat number would you like to store there?\r\n");
      i = getNumber();
      EEPROM_writeByte(address, i);
      printString("\r\n");
      break;
    default:
      printString("What??\r\n");
    }


  }                                                  /* End event loop */
  return 0;                            /* This line is never reached */
}