Add config option to force module to always boot into the menu

software/CONFIGURATION.md

@@ -17,7 +17,8 @@ default configuration:
     "DISPLAY_CHANNEL": 0,
     "MAX_OUTPUT_VOLTAGE": 10,
     "MAX_INPUT_VOLTAGE": 12,
-    "GATE_VOLTAGE": 5
+    "GATE_VOLTAGE": 5,
+    "MENU_AFTER_POWER_ON": false
 }
 ```
 
@@ -36,7 +37,8 @@ default configuration:
   The hardware is capable of 12V maximum
 - `GATE_VOLTAGE` is an integer in the range `[0, 10]` indicating the voltage that an output will produce when `cvx.on()`
   is called. This value must not be higher than `MAX_OUTPUT_VOLTAGE`
-
+- `MENU_AFTER_POWER_ON` is a boolean indicating whether or not the module should always return to the main menu when
+  it powers on.  By default the EuroPi will re-launch the last-used program instead of returning to the main menu.
 
 
 # Experimental configuration
@@ -121,6 +123,7 @@ customizations described in the sections above. Below is a detailed summary of t
   'GATE_VOLTAGE',
   'MAX_INPUT_VOLTAGE',
   'MAX_OUTPUT_VOLTAGE',
+  'MENU_AFTER_POWER_ON',
   'PICO_MODEL',
   'ROTATE_DISPLAY'
 ]

software/firmware/bootloader.py

@@ -160,6 +160,10 @@ def main(self):
             europi.b2._handler_both(europi.b1, self.exit_to_menu)
 
             try:
+                if europi.europi_config.MENU_AFTER_POWER_ON:
+                    # Remove the last-launched file to force the module back to the menu after it powers-on next time
+                    self.save_state_json({})
+
                 script_class().main()
             except Exception as err:
                 # set all outputs to zero for safety

software/firmware/europi_config.py

@@ -73,7 +73,7 @@ def config_points(cls):
                 default=0
             ),
 
-            # Synthesizer family settings
+            # I/O voltage settings
             configuration.integer(
                 name="MAX_OUTPUT_VOLTAGE",
                 range=range(1, 11),
@@ -89,6 +89,12 @@ def config_points(cls):
                 range=range(1, 11),
                 default=5
             ),
+
+            # Menu settings
+            configuration.boolean(
+                name="MENU_AFTER_POWER_ON",
+                default=False
+            ),
         ]
         # fmt: on