LUA/SENT: hook to get RAW sig0 and sig1 (WIP)

TODO: how to return two (N) values from LUA hook?

firmware/controllers/lua/lua_hooks.cpp

@@ -655,6 +655,17 @@ void configureRusefiLuaHooks(lua_State* l) {
 			lua_pushnumber(l, value);
 			return 1;
 	});
+
+	lua_register(l, "getSentValues",
+			[](lua_State* l) {
+			uint16_t sig0;
+			uint16_t sig1;
+			auto humanIndex = luaL_checkinteger(l, 1);
+			auto ret = getSentValues(humanIndex - 1, &sig0, &sig1);
+			lua_pushnumber(l, sig0);
+			lua_pushnumber(l, sig1);
+			return 2;
+	});
 #endif // EFI_SENT_SUPPORT
 
 #if EFI_LAUNCH_CONTROL

firmware/hw_layer/drivers/sent/sent.cpp

@@ -603,6 +603,7 @@ static void printSentInfo()
 }
 
 /* Don't be confused: this actually returns throttle body position */
+/* TODO: remove, replace with getSentValues() */
 float getSentValue(size_t index) {
 	if (index < SENT_CHANNELS_NUM) {
 		uint16_t sig0, sig1;
@@ -623,6 +624,17 @@ float getSentValue(size_t index) {
     return NAN;
 }
 
+int getSentValues(size_t index, uint16_t *sig0, uint16_t *sig1) {
+	if (index < SENT_CHANNELS_NUM) {
+		sent_channel &ch = channels[index];
+
+		return ch.GetSignals(NULL, sig0, sig1);
+	}
+
+	/* invalid channel */
+    return -1;
+}
+
 /* Should be called once */
 void initSent(void)
 {

firmware/hw_layer/drivers/sent/sent.h

@@ -20,3 +20,4 @@ void startSent(void);
 void stopSent(void);
 
 float getSentValue(size_t index);
+int getSentValues(size_t index, uint16_t *sig0, uint16_t *sig1);