From da447a2efa359af92d257a212025277110bae102 Mon Sep 17 00:00:00 2001
From: _N0x <tf@n0x.io>
Date: Wed, 26 Jan 2022 22:26:58 +0100
Subject: [PATCH] More comments to LM35 part in cli.c and general comments to
 uart.c

---
 EmbeddedSystemsTHM/CLI.c  | 7 ++++---
 EmbeddedSystemsTHM/UART.c | 6 +++---
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/EmbeddedSystemsTHM/CLI.c b/EmbeddedSystemsTHM/CLI.c
index 48c5549..81cc322 100644
--- a/EmbeddedSystemsTHM/CLI.c
+++ b/EmbeddedSystemsTHM/CLI.c
@@ -353,14 +353,15 @@ 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		
-			lm35 = (int)(adc_get_LM35() * 5000.0 / 1024 / 10);
+			/* 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.
 			print_string(lm35Data);
diff --git a/EmbeddedSystemsTHM/UART.c b/EmbeddedSystemsTHM/UART.c
index 1065314..7366287 100644
--- a/EmbeddedSystemsTHM/UART.c
+++ b/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 
@@ -117,7 +117,7 @@ uart_get_data(void) {
 	if yes -> data is available and can be read */
 	if(pRxBuffer->Readpointer != pRxBuffer->Writepointer)
 	{
-		/* read a char from the buffer and increment the readpointer */
+		/* read a char from the buffer and increment the read pointer */
 		data = pRxBuffer->data[pRxBuffer->Readpointer++];
 		if(pRxBuffer->Readpointer >= SIZE_BUFFER){
 			pRxBuffer->Readpointer = 0;