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68 lines
1.6 KiB
68 lines
1.6 KiB
#include <AP_Gripper/AP_Gripper_Servo.h> |
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extern const AP_HAL::HAL& hal; |
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void AP_Gripper_Servo::init_gripper() |
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{ |
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// move the servo to the release position |
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release(); |
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} |
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void AP_Gripper_Servo::grab() |
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{ |
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// move the servo to the grab position |
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SRV_Channels::set_output_pwm(SRV_Channel::k_gripper, config.grab_pwm); |
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action_timestamp = AP_HAL::millis(); |
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} |
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void AP_Gripper_Servo::release() |
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{ |
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// move the servo to the release position |
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SRV_Channels::set_output_pwm(SRV_Channel::k_gripper, config.release_pwm); |
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action_timestamp = AP_HAL::millis(); |
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} |
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bool AP_Gripper_Servo::has_state_pwm(const uint16_t pwm) const |
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{ |
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// return true if servo is in position represented by pwm |
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uint16_t current_pwm; |
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if (!SRV_Channels::get_output_pwm(SRV_Channel::k_gripper, current_pwm)) { |
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// function not assigned to a channel, perhaps? |
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return false; |
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} |
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if (current_pwm != pwm) { |
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// last action did not set pwm to the current value |
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// (e.g. last action was a grab not a release) |
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return false; |
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} |
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if (AP_HAL::millis() - action_timestamp < action_time) { |
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// servo still moving.... |
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return false; |
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} |
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return true; |
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} |
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bool AP_Gripper_Servo::released() const |
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{ |
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return has_state_pwm(config.release_pwm); |
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} |
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bool AP_Gripper_Servo::grabbed() const |
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{ |
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return has_state_pwm(config.grab_pwm); |
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} |
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// type-specific periodic updates: |
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void AP_Gripper_Servo::update_gripper() { }; |
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bool AP_Gripper_Servo::valid() const |
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{ |
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if (!AP_Gripper_Backend::valid()) { |
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return false; |
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} |
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if (!SRV_Channels::function_assigned(SRV_Channel::k_gripper)) { |
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return false; |
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} |
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return true; |
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}
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