Make parameter names case-insensitive

+ minor fix

docs/usage.md

@@ -108,7 +108,7 @@ The drone is configured using parameters. To access and modify them, go to the Q
 
 <img src="img/parameters.png" width="400">
 
-You can also work with parameters using `p` command in the console.
+You can also work with parameters using `p` command in the console. Parameter names are case-insensitive.
 
 ### Define IMU orientation
 

flix/parameters.ino

@@ -121,7 +121,7 @@ float getParameter(int index) {
 
 float getParameter(const char *name) {
 	for (auto &parameter : parameters) {
-		if (strcmp(parameter.name, name) == 0) {
+		if (strcasecmp(parameter.name, name) == 0) {
 			return parameter.getValue();
 		}
 	}
@@ -130,7 +130,7 @@ float getParameter(const char *name) {
 
 bool setParameter(const char *name, const float value) {
 	for (auto &parameter : parameters) {
-		if (strcmp(parameter.name, name) == 0) {
+		if (strcasecmp(parameter.name, name) == 0) {
 			if (parameter.integer && !isfinite(value)) return false; // can't set integer to NaN or Inf
 			parameter.setValue(value);
 			return true;

flix/rc.ino

@@ -13,10 +13,10 @@ float channelZero[16]; // calibration zero values
 float channelMax[16]; // calibration max values
 
 float controlRoll, controlPitch, controlYaw, controlThrottle; // pilot's inputs, range [-1, 1]
-float controlMode = NAN; //
+float controlMode = NAN;
 float controlTime; // time of the last controls update (0 when no RC)
 
-// Channels mapping (using float to store in parameters):
+// Channels mapping (nan means not assigned):
 float rollChannel = NAN, pitchChannel = NAN, throttleChannel = NAN, yawChannel = NAN, modeChannel = NAN;
 
 void setupRC() {