Reduce EEPROM wear, don't check if changed before write.

driver/eeprom.c

@@ -14,6 +14,9 @@
  *     limitations under the License.
  */
 
+#include <stddef.h>
+#include <string.h>
+
 #include "driver/eeprom.h"
 #include "driver/i2c.h"
 #include "driver/system.h"
@@ -37,17 +40,23 @@ void EEPROM_ReadBuffer(uint16_t Address, void *pBuffer, uint8_t Size)
 }
 
 void EEPROM_WriteBuffer(uint16_t Address, const void *pBuffer)
+{
+	if (pBuffer == NULL || Address >= 0x2000)
+		return;
+
+
+	uint8_t buffer[8];
+	EEPROM_ReadBuffer(Address, buffer, 8);
+	if (memcmp(pBuffer, buffer, 8) != 0)
 	{
 		I2C_Start();
-
 		I2C_Write(0xA0);
-
 		I2C_Write((Address >> 8) & 0xFF);
 		I2C_Write((Address >> 0) & 0xFF);
-
 		I2C_WriteBuffer(pBuffer, 8);
-
 		I2C_Stop();
-
-	SYSTEM_DelayMs(10);
+	}
+
+	// give the EEPROM time to burn the data in (apparently takes 5ms)
+	SYSTEM_DelayMs(8);
 }