command interpreter and epprom

eeprom.h

@@ -0,0 +1,42 @@
+void EEPROM_write_char(uint16_t address, unsigned char data)
+{
+    /* Wait for completion of previous write */
+    while(EECR & (1<<EEPE))
+    ;
+    /* Set up address and Data Registers */
+    EEAR = address;
+    EEDR = data;
+    /* Write logical one to EEMPE */
+    EECR |= (1<<EEMPE);
+    /* Start eeprom write by setting EEPE */
+    EECR |= (1<<EEPE);
+}
+
+unsigned char EEPROM_read_char(uint16_t uiAddress)
+{
+    /* Wait for completion of previous write */
+    while(EECR & (1<<EEPE))
+    ;
+    /* Set up address register */
+    EEAR = uiAddress;
+    /* Start eeprom read by writing EERE */
+    EECR |= (1<<EERE);
+    /* Return data from Data Register */
+    return EEDR;
+}
+
+void EEPROM_write_string(uint16_t address, char* buffer, uint16_t length)
+{
+    for(uint16_t i = 0; i < length; i++)
+    {
+        EEPROM_write_char( address+i, buffer[i] );
+    }
+}
+
+void EEPROM_read_string(uint16_t address, char* buffer, uint16_t length)
+{
+    for(uint16_t i = 0; i < length; i++)
+    {
+        buffer[i] = EEPROM_read_char( address+i);
+    }
+}