From 6003ea660387cb7602b29cf912eb477cdf0b176a Mon Sep 17 00:00:00 2001
From: BlackMark <me@blackmark.me>
Date: Wed, 1 Apr 2020 05:21:56 +0200
Subject: [PATCH] Add monitor command to continuously show measurements

---
 fantemp/terminal.hpp | 23 ++++++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/fantemp/terminal.hpp b/fantemp/terminal.hpp
index d310b42..29a0eaa 100644
--- a/fantemp/terminal.hpp
+++ b/fantemp/terminal.hpp
@@ -14,6 +14,7 @@ GF(ENDL, "\r\n");
 GF(HELP_CMD, "help");
 GF(SHOW_CMD, "show");
 GF(CURVE_CMD, "curve");
+GF(MONITOR_CMD, "monitor");
 
 constexpr auto BACKSPACE = uint8_t{0x7f};
 constexpr auto CTRL_C = uint8_t{0x03};
@@ -77,14 +78,23 @@ class Terminal {
 			m_inputSize = 0;
 			m_serial << F("$ ");
 		}
+
+		if (m_state == State::MONITOR)
+			showState();
 	}
 
   private:
 	static constexpr auto INPUT_BUFFER_SIZE = 128;
 
+	enum class State {
+		NONE,
+		MONITOR,
+	};
+
 	static Uart m_serial;
 	static char m_inputBuffer[INPUT_BUFFER_SIZE];
 	static uint16_t m_inputSize;
+	static State m_state;
 
 	static void parseInput()
 	{
@@ -97,6 +107,8 @@ class Terminal {
 				showState();
 			} else if (strncmp_P(m_inputBuffer, reinterpret_cast<const char *>(CURVE_CMD), m_inputSize) == 0) {
 				printCurve();
+			} else if (strncmp_P(m_inputBuffer, reinterpret_cast<const char *>(MONITOR_CMD), m_inputSize) == 0) {
+				m_state = State::MONITOR;
 			} else {
 				printUnknown();
 			}
@@ -106,14 +118,16 @@ class Terminal {
 	static void handleCtrlC()
 	{
 		m_serial << F("Abort!") << ENDL;
+		m_state = State::NONE;
 	}
 
 	static void printHelp()
 	{
 		m_serial << F("FanTemp command overview: ") << ENDL;
-		m_serial << HELP_CMD << F(" ..: print this help message") << ENDL;
-		m_serial << SHOW_CMD << F(" ..: shows current temperature and fan speed") << ENDL;
-		m_serial << CURVE_CMD << F(" .: shows the curve used to map temperature to fan speed") << ENDL;
+		m_serial << HELP_CMD << F(" ....: print this help message") << ENDL;
+		m_serial << SHOW_CMD << F(" ....: shows current temperature and fan speed") << ENDL;
+		m_serial << CURVE_CMD << F(" ...: shows the curve used to map temperature to fan speed") << ENDL;
+		m_serial << MONITOR_CMD << F(" .: loops the show command until Ctrl + C is pressed") << ENDL;
 	}
 
 	static void showState()
@@ -156,3 +170,6 @@ char Terminal<Uart>::m_inputBuffer[INPUT_BUFFER_SIZE];
 
 template <class Uart>
 uint16_t Terminal<Uart>::m_inputSize = 0;
+
+template <class Uart>
+typename Terminal<Uart>::State Terminal<Uart>::m_state = State::NONE;