Implemented proper logic for number of channels (incl. start channel)

radio/src/gui/colorlcd/model_setup.cpp

@@ -1129,7 +1129,10 @@ class ModuleWindow : public FormGroup {
           });
           bindButton->setCheckHandler([=]() {
               if (moduleState[moduleIdx].mode != MODULE_MODE_BIND) {
-                bindButton->check(false);
+                if (bindButton->checked()) {
+                  bindButton->check(false);
+                  this->invalidate();
+                }
               }
 #if defined(MULTIMODULE)
               if (isModuleMultimodule(moduleIdx) &&

radio/src/gui/gui_common.h

@@ -183,11 +183,12 @@ inline uint8_t MODULE_CHANNELS_ROWS(int moduleIdx)
       return 1;
     else
       return 0;
-  }
-  else if (isModuleDSM2(moduleIdx) || isModuleCrossfire(moduleIdx) || isModuleGhost(moduleIdx) || isModuleSBUS(moduleIdx)) {
+  } else if (isModuleDSM2(moduleIdx) || isModuleCrossfire(moduleIdx) ||
+             isModuleGhost(moduleIdx) || isModuleSBUS(moduleIdx) ||
+             isModuleDSMP(moduleIdx)) {
+    // fixed number of channels
     return 0;
-  }
-  else {
+  } else {
     return 1;
   }
 }