56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
/* SPI EEPROM 25LC256 Demo */
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// ------- Preamble -------- //
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#include <avr/io.h>
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#include <util/delay.h>
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#include "pinDefines.h"
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#include "USART.h"
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#include "25LC256.h"
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int main(void) {
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uint8_t i;
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uint8_t address;
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// -------- Inits --------- //
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initSPI();
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initUSART();
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// ------ Event loop ------ //
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while (1) {
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printString("\r\n==== EEPROM Memory Playground ====\r\n");
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printString("Address Value\r\n");
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for (i = 0; i < 10; i++) { /* print out first ten bytes of memory */
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printString(" ");
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printByte(i);
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printString(" ");
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printByte(EEPROM_readByte(i));
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printString("\r\n");
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}
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printString(" [e] to erase all memory\r\n");
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printString(" [w] to write byte to memory\r\n\r\n");
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switch (receiveByte()) { /* take input */
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case 'e':
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printString("Clearing EEPROM, this could take a few seconds.\r\n");
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EEPROM_clearAll();
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break;
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case 'w':
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printString("Which memory slot would you like to write to?\r\n");
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address = getNumber();
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printString("\r\nWhat number would you like to store there?\r\n");
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i = getNumber();
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EEPROM_writeByte(address, i);
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printString("\r\n");
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break;
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default:
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printString("What??\r\n");
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}
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} /* End event loop */
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return 0; /* This line is never reached */
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}
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