From a33a764b1d1f1de2c1523c09b865be6fe78715d2 Mon Sep 17 00:00:00 2001
From: BlackMark <me@blackmark.me>
Date: Wed, 1 Apr 2020 02:41:09 +0200
Subject: [PATCH] Add parsing and handling of help command

---
 fantemp/terminal.hpp | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/fantemp/terminal.hpp b/fantemp/terminal.hpp
index 8b10923..a0fd3a6 100644
--- a/fantemp/terminal.hpp
+++ b/fantemp/terminal.hpp
@@ -3,6 +3,8 @@
 #include <ctype.h>
 #include <stdint.h>
 
+#include <avr/pgmspace.h>
+
 #include "flash/flash.hpp"
 
 #define ENDL F("\r\n")
@@ -49,6 +51,7 @@ class Terminal {
 				if (m_serial.peek(inputByte) && (inputByte == '\r' || inputByte == '\n')) {
 					m_serial.rxByte(inputByte);
 				}
+				m_serial << ENDL;
 				handleInput = true;
 				break;
 			}
@@ -63,7 +66,7 @@ class Terminal {
 		if (handleInput) {
 			parseInput();
 			m_inputSize = 0;
-			m_serial << ENDL << F("$ ");
+			m_serial << F("$ ");
 		}
 	}
 
@@ -74,7 +77,18 @@ class Terminal {
 	static char m_inputBuffer[INPUT_BUFFER_SIZE];
 	static uint16_t m_inputSize;
 
-	static void parseInput() {}
+	static void parseInput()
+	{
+		if (m_inputSize && strncmp_P(m_inputBuffer, reinterpret_cast<const char *>(F("help")), m_inputSize) == 0) {
+			printHelp();
+		}
+	}
+
+	static void printHelp()
+	{
+		m_serial << F("Help: ") << ENDL;
+		m_serial << F("help .: print this help message") << ENDL;
+	}
 };
 
 template <class Uart>