payload deliverer: remove PD_GRIPPER_EN as unnecessary, reduce gripper timeout to 1s

ROMFS/px4fmu_common/init.d-posix/rcS

@@ -345,11 +345,7 @@ then
 	gyro_calibration start
 fi
 
-# Payload deliverer module if gripper is enabled
-if param compare -s PD_GRIPPER_EN 1
-then
-	payload_deliverer start
-fi
+payload_deliverer start
 
 if param compare -s ICE_EN 1
 then

ROMFS/px4fmu_common/init.d/rcS

@@ -568,11 +568,7 @@ else
 		px4flow start -X &
 	fi
 
-	# Payload deliverer module if gripper is enabled
-	if param compare -s PD_GRIPPER_EN 1
-	then
-		payload_deliverer start
-	fi
+	payload_deliverer start
 
 	if param compare -s ICE_EN 1
 	then

docs/en/peripherals/gripper.md

@@ -38,7 +38,7 @@ MAVLink applications, such as ground stations, can also control the gripper usin
 
 PX4 gripper support is tied to the package delivery feature, which must be enabled and configured in order to be able to use a gripper.
 
-1. Set [PD_GRIPPER_EN](../advanced_config/parameter_reference.md#PD_GRIPPER_EN) parameter to 1 (reboot required after change).
+1. Ensure your board has the Payload Deliverer module enabled: CONFIG_MODULES_PAYLOAD_DELIVERER.
 1. Set [PD_GRIPPER_TYPE](../advanced_config/parameter_reference.md#PD_GRIPPER_TYPE) to match your gripper.
    For example, set to `Servo` for a [Servo Gripper](gripper_servo.md).
 

src/modules/payload_deliverer/module.yaml

@@ -5,13 +5,6 @@ parameters:
       definitions:
 
         # Gripper configuration
-        PD_GRIPPER_EN:
-            description:
-                short: Enable Gripper actuation in Payload Deliverer
-            type: boolean
-            default: 0
-            reboot_required: true
-
         PD_GRIPPER_TYPE:
             description:
                 short: Type of Gripper (Servo, etc.)
@@ -34,4 +27,4 @@ parameters:
             type: float
             unit: s
             min: 0
-            default: 3
+            default: 1

src/modules/payload_deliverer/payload_deliverer.cpp

@@ -54,7 +54,7 @@ bool PayloadDeliverer::init()
 void PayloadDeliverer::configure_gripper()
 {
 	// If gripper instance is invalid, and user enabled the gripper, try initializing it
-	if (!_gripper.is_valid() && _param_gripper_enable.get()) {
+	if (!_gripper.is_valid()) {
 		GripperConfig config{};
 		config.type = (GripperConfig::GripperType)_param_gripper_type.get();
 		config.sensor = GripperConfig::GripperSensorType::NONE; // Feedback sensor isn't supported for now

src/modules/payload_deliverer/payload_deliverer.h

@@ -104,7 +104,7 @@ private:
 	/**
 	 * @brief Initialize or deinitialize gripper instance based on parameter settings
 	 *
-	 * Depending on `PD_GRIPPER_EN` and the state of `_gripper` instance, this function will
+	 * Depending on the state of `_gripper` instance, this function will
 	 * either try to initialize or de-initialize the gripper appropriately.
 	 */
 	void configure_gripper();
@@ -159,7 +159,6 @@ private:
 
 	DEFINE_PARAMETERS(
 		(ParamFloat<px4::params::PD_GRIPPER_TO>)	_param_gripper_timeout_s,
-		(ParamInt<px4::params::PD_GRIPPER_TYPE>)	_param_gripper_type,
-		(ParamBool<px4::params::PD_GRIPPER_EN>)		_param_gripper_enable
+		(ParamInt<px4::params::PD_GRIPPER_TYPE>)	_param_gripper_type
 	)
 };