all commands implemented, untested.

micropizza/main.py

@@ -55,8 +55,7 @@ class Scroll:
         self.c += self._dir
 
     def _stop(self, pin):
-        self.a_pin.value(0)
-        self.b_pin.value(0)
+        self.speed = 0
 
     @property
     def dir(self):
@@ -74,10 +73,10 @@ class Scroll:
 
     @speed.setter
     def speed(self, speed):
-        self._speed = speed
         self.en_pin.duty_u16(speed * (_PWM_MAX // 100))
         self.dir = (1 if speed > 0 else
                     (-1 if speed < 0 else 0))
+        self._speed = speed
 
 pwm_bl = PWM(Pin(_PIN_EN_BACKLIGHT))
 pwm_bl.freq(_PWM_FREQ)
@@ -189,9 +188,14 @@ def recording(timeout):
         time.sleep_ms(50)
     return 'OK'
 
-
 def rewind(*opts):
-    print(f'rewind({opts})')
+    scroll_h.speed = -100
+    scroll_v.speed = -100
+    while (scroll_h.speed + scroll_v.speed) > 0:
+        time.sleep_ms(10)
+    scroll_h.c = 0
+    scroll_v.c = 0
+    return 'OK'
 
 ###############################################################################
 
@@ -201,6 +205,7 @@ choice_map = {
     CMD_BL: backlight, 
     CMD_FL: frontlight,
     CMD_UI: user_interaction,
+    CMD_RC: recording,
     CMD_RW: rewind
 }