Merge branch 'master' into speedfield

libs/core/buttons.ts

@@ -92,6 +92,7 @@ namespace brick {
         //% blockNamespace=brick
         //% weight=81 blockGap=8
         //% group="Buttons"
+        //% button.fieldEditor="brickbuttons"
         isPressed() {
             return this._isPressed
         }
@@ -107,6 +108,7 @@ namespace brick {
         //% blockNamespace=brick
         //% weight=80
         //% group="Buttons"
+        //% button.fieldEditor="brickbuttons"
         wasPressed() {
             const r = this._wasPressed
             this._wasPressed = false
@@ -125,6 +127,7 @@ namespace brick {
         //% blockNamespace=brick
         //% weight=99 blockGap=8
         //% group="Buttons"
+        //% button.fieldEditor="brickbuttons"
         onEvent(ev: ButtonEvent, body: () => void) {
             control.onEvent(this._id, ev, body)
         }
@@ -139,6 +142,7 @@ namespace brick {
         //% blockNamespace=brick
         //% weight=98 blockGap=8
         //% group="Buttons"
+        //% button.fieldEditor="brickbuttons"
         pauseUntil(ev: ButtonEvent) {
             control.waitForEvent(this._id, ev);
         }
@@ -166,7 +170,6 @@ namespace brick {
         // this needs to be done in query(), which is run without the main JS execution mutex
         // otherwise, while(true){} will lock the device
         if (ret & DAL.BUTTON_ID_ESCAPE) {
-            motors.stopAllMotors();
             control.reset()
         }
         return ret

libs/core/linux.cpp

@@ -483,7 +483,15 @@ void runLMS() {
     */
 }
 
+void stopMotors() {
+    uint8_t cmd[2] = { 0xA3, 0x0F };
+    int fd = open("/dev/lms_pwm", O_RDWR);
+    write(fd, cmd, 2);
+    close(fd);
+}
+
 extern "C" void target_reset() {
+    stopMotors();
     if (lmsPid)
         runLMS();
     else