More comments to LM35 part in cli.c and general comments to uart.c

EmbeddedSystemsTHM/CLI.c

@@ -353,13 +353,14 @@ static void cmd_adc(const char* _data){
 		if(Timer_getTick() - g_startMS >= loopInterval){
 			g_startMS=Timer_getTick();
 					
-			// Print Potentiometer info
+			/* Print Potentiometer info */
 			sprintf(potiData, "Poti: %d", adc_get_poti());
 			//sprintf(potiData, "Poti: %f", (adc_get_poti() / 1023.0)); // uses floats - disabled for performance reasons.
 			print_string(potiData);
 			print_string(NEXT_LINE);
 			
-			// Print LM35 temperature		
+			/* Print LM35 temperature */
+			/* calculate the temperature from the ADC reading */
 			lm35 = (int)(adc_get_LM35() * 5000.0 / 1024 / 10); 
 			sprintf(lm35Data, "LM35: %d\xC2\xB0 C", lm35);
 			//sprintf(lm35Data, "LM35: %f\xC2\xB0 C", (adc_get_LM35() * (5000 / 1024.0) / 10)); // uses floats - disabled for performance reasons.

EmbeddedSystemsTHM/UART.c

@@ -30,7 +30,7 @@ uart_init(void) {
 	(1<<RXCIE0);					/* enable Receive interrupts */	
 	
 	
-	/* Initiate read- and write-pointers */
+	/* Initiate read- and write-pointers with 0 */
 	pTxBuffer->Readpointer	= 0;
 	pTxBuffer->Writepointer = 0;
 	pRxBuffer->Readpointer	= 0;
@@ -71,7 +71,7 @@ uart_send_byte(char c) {
 	UCSR0B |= (1<<TXCIE0);
 }
 
-/* when data (a data frame) is to be send */
+/* when data (a data frame) is to be send (written to UDR0) */
 ISR(USART0_TX_vect) {
 	/* check if the read and write pointer of the send buffer are not aligned
 	if not aligned -> read the next byte and write it to UDR0 register