spheroncd: Implement heading calibration.

ncd/examples/sphero/calculator.py

@@ -9,26 +9,22 @@ def main():
     
     while True:
         comps = sys.stdin.readline().rstrip('\n').split(' ')
-        assert len(comps) == 6
+        assert len(comps) == 11
         numbers = [float(x) for x in comps]
         
-        x_val = numbers[0]
-        x_min = numbers[1]
-        x_max = numbers[2]
-        y_val = numbers[3]
-        y_min = numbers[4]
-        y_max = numbers[5]
+        x_val, x_min, x_max, y_val, y_min, y_max, rz_val, rz_min, rz_max, turbo, adjust = numbers
         
         x_rel = 2.0 * ((x_val - x_min) / (x_max - x_min)) - 1.0
         y_rel = 2.0 * ((y_val - y_min) / (y_max - y_min)) - 1.0
+        rz_rel = 2.0 * ((rz_val - rz_min) / (rz_max - rz_min)) - 1.0
         
         angle = math.atan2(y_rel, x_rel)
         length = math.sqrt(x_rel**2 + y_rel**2)
         
-        angle_fixed = int(round(math.degrees(angle))) % 360
-        length_fixed = max(0, min(255, int(round(255.0 * length))))
+        angle_fixed = (int(round(math.degrees(angle))) + 90) % 360
+        speed_fixed = 0 if adjust else 255 if turbo else max(0, min(255, int(round(255.0 * length))))
         
-        sys.stdout.write('{} {}\n'.format(angle_fixed, length_fixed))
+        sys.stdout.write('{} {}\n'.format(angle_fixed, speed_fixed))
         sys.stdout.flush()
         
 main()

ncd/examples/sphero/spheroncd.ncd

@@ -10,14 +10,17 @@ process main {
     
     value([]) joy_positions;
     joy_positions->insert("BTN_TRIGGER", "0");
+    joy_positions->insert("BTN_THUMB", "0");
     Foreach (joy_axis_ranges As axis_name: range) {
         joy_positions->insert(@concat("ABS_", axis_name), @num_divide(range, "2"));
     };
     
-    value(["BTN_THUMB": @false]) joy_latch_buttons;
+    value([]) joy_latch_buttons;
     
     blocker(@true) joy_event_signal;
     
+    var("0") last_adjust;
+    
     compile_search(" ") search_space;
     
     refhere() global;
@@ -92,7 +95,7 @@ template _spheroncd_sphero {
     mgr->start(@_spheroncd_read_task, {});
     mgr->start(@_spheroncd_send_task, {});
     mgr->start(@_spheroncd_ping_task, {});
-    mgr->start(@_spheroncd_roll_task, {});
+    mgr->start(@_spheroncd_control_task, {});
     mgr->start(@_spheroncd_calculator_task, {});
     
     call(@_spheroncd_set_back_led, {^dev, "255"});
@@ -179,7 +182,7 @@ template _spheroncd_ping_task {
     again->go();
 }
 
-template _spheroncd_roll_task {
+template _spheroncd_control_task {
     objref(^_caller.dev) dev;
     objref(^dev.global) global;
     
@@ -189,11 +192,18 @@ template _spheroncd_roll_task {
     
     global.joy_positions->get("ABS_X") pos_x;
     global.joy_positions->get("ABS_Y") pos_y;
+    global.joy_positions->get("ABS_RZ") pos_rz;
     global.joy_positions->get("BTN_TRIGGER") turbo;
+    global.joy_positions->get("BTN_THUMB") adjust;
     global.joy_axis_ranges->get("X") max_x;
     global.joy_axis_ranges->get("Y") max_y;
+    global.joy_axis_ranges->get("RZ") max_rz;
+    
+    var(global.last_adjust) old_adjust;
+    global.last_adjust->set(adjust);
+    
+    var(@concat(pos_x, " ", "0", " ", max_x, " ", pos_y, " ", "0", " ", max_y, " ", pos_rz, " ", "0", " ", max_rz, " ", turbo, " ", adjust, "\n")) calc_request;
     
-    var(@concat(pos_x, " ", "0", " ", max_x, " ", pos_y, " ", "0", " ", max_y, "\n")) calc_request;
     call(@_spheroncd_calc_operation, {^dev, calc_request}) calc_op;
     global.search_space->explode(calc_op.response) resp_fields;
     value(resp_fields) resp_fields;
@@ -201,9 +211,11 @@ template _spheroncd_roll_task {
     resp_fields->get("0") calc_heading;
     resp_fields->get("1") calc_speed;
     
-    var(@if(@num_greater(turbo, "0"), "255", calc_speed)) speed;
+    If (@and(@num_different(old_adjust, "0"), @num_equal(adjust, "0"))) {
+        call(@_spheroncd_set_heading, {^dev, "0"});
+    };
     
-    call(@_spheroncd_roll, {^dev, speed, calc_heading, "1"});
+    call(@_spheroncd_roll, {^dev, calc_speed, calc_heading, "1"});
     
     sleep(global.max_roll_interval);
     
@@ -275,6 +287,15 @@ template _spheroncd_calc_operation {
     };
 }
 
+template _spheroncd_set_heading {
+    objref_arg(_arg0) dev;
+    alias(@_arg1) heading;
+    
+    call(@_spheroncd_enqueue_packet, {^dev, @true, @false, "2", "1", "0", @struct_encode({
+        {@u16b, heading}
+    })});
+}
+
 template _spheroncd_roll {
     objref_arg(_arg0) dev;
     alias(@_arg1) speed;