Adding environment setup and instructions

main/system.h

@@ -5,6 +5,8 @@
 #include "freertos/task.h"
 #include "freertos/semphr.h"
 
+#define DISABLE_GUI
+
 enum
 {
     ANGLE_XY = 0,
@@ -27,11 +29,15 @@ typedef struct SystemState_s
 
 	EventGroupHandle_t event;
 
+    float zeroAngle;
+    int primaryAxis;
 
 } SystemState_t;
 
 
-#define MAX_INDICATION_ANGLE    10.0f
+#define MAX_INDICATION_ANGLE    5.0f
+#define FILTER_COEFF            0.2f        // 0 to 1   Smaller number is heavier filter
+#define PRIMARY_AXIS            ANGLE_YZ
 
 #define EM_MAX_SUBSCRIBERS 8    // tweak as needed
 #define EM_EVENT_NEW_DATA   (1UL<<0)
@@ -49,6 +55,13 @@ void system_setImuData(ImuData_t imu);
 
 ImuData_t system_getImuData(void);
 
+int system_getPrimaryAxis(void);
+float system_getAngle(void);
+
+void system_setZeroAngle(void);
+void system_clearZeroAngle(void);
+float system_getZeroAngle(void);
+
 // Subscribe (register) current task to receive events
 BaseType_t system_subscribe(TaskHandle_t task);