ardupilot/libraries/AP_UAVCAN/AP_UAVCAN.h

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/*
* This file is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This file is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Author: Eugene Shamaev, Siddharth Bharat Purohit
*/
#pragma once
#include <AP_HAL/AP_HAL.h>
#if HAL_ENABLE_LIBUAVCAN_DRIVERS
#include <uavcan/uavcan.hpp>
#include "AP_UAVCAN_DNA_Server.h"
#include "AP_UAVCAN_IfaceMgr.h"
#include "AP_UAVCAN_Clock.h"
#include <AP_CANManager/AP_CANDriver.h>
#include <AP_HAL/Semaphores.h>
#include <AP_Param/AP_Param.h>
#include <uavcan/helpers/heap_based_pool_allocator.hpp>
#ifndef UAVCAN_NODE_POOL_SIZE
#define UAVCAN_NODE_POOL_SIZE 8192
#endif
#ifndef UAVCAN_NODE_POOL_BLOCK_SIZE
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#define UAVCAN_NODE_POOL_BLOCK_SIZE 64
#endif
#ifndef UAVCAN_SRV_NUMBER
#define UAVCAN_SRV_NUMBER 18
#endif
#define AP_UAVCAN_SW_VERS_MAJOR 1
#define AP_UAVCAN_SW_VERS_MINOR 0
#define AP_UAVCAN_HW_VERS_MAJOR 1
#define AP_UAVCAN_HW_VERS_MINOR 0
#define AP_UAVCAN_MAX_LED_DEVICES 4
// fwd-declare callback classes
class ButtonCb;
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class TrafficReportCb;
class ActuatorStatusCb;
class ESCStatusCb;
class DebugCb;
#if defined(__GNUC__) && (__GNUC__ > 8)
#define DISABLE_W_CAST_FUNCTION_TYPE_PUSH \
_Pragma("GCC diagnostic push") \
_Pragma("GCC diagnostic ignored \"-Wcast-function-type\"")
#define DISABLE_W_CAST_FUNCTION_TYPE_POP \
_Pragma("GCC diagnostic pop")
#else
#define DISABLE_W_CAST_FUNCTION_TYPE_PUSH
#define DISABLE_W_CAST_FUNCTION_TYPE_POP
#endif
/*
Frontend Backend-Registry Binder: Whenever a message of said DataType_ from new node is received,
the Callback will invoke registery to register the node as separate backend.
*/
#define UC_REGISTRY_BINDER(ClassName_, DataType_) \
class ClassName_ : public AP_UAVCAN::RegistryBinder<DataType_> { \
typedef void (*CN_Registry)(AP_UAVCAN*, uint8_t, const ClassName_&); \
public: \
ClassName_() : RegistryBinder() {} \
DISABLE_W_CAST_FUNCTION_TYPE_PUSH \
ClassName_(AP_UAVCAN* uc, CN_Registry ffunc) : \
RegistryBinder(uc, (Registry)ffunc) {} \
DISABLE_W_CAST_FUNCTION_TYPE_POP \
}
class AP_UAVCAN : public AP_CANDriver {
public:
AP_UAVCAN();
~AP_UAVCAN();
static const struct AP_Param::GroupInfo var_info[];
// Return uavcan from @driver_index or nullptr if it's not ready or doesn't exist
static AP_UAVCAN *get_uavcan(uint8_t driver_index);
void init(uint8_t driver_index, bool enable_filters) override;
bool add_interface(AP_HAL::CANIface* can_iface) override;
// send ESC telemetry messages over MAVLink
void send_esc_telemetry_mavlink(uint8_t mav_chan);
uavcan::Node<0>* get_node() { return _node; }
uint8_t get_driver_index() const { return _driver_index; }
///// SRV output /////
void SRV_push_servos(void);
///// LED /////
bool led_write(uint8_t led_index, uint8_t red, uint8_t green, uint8_t blue);
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// buzzer
void set_buzzer_tone(float frequency, float duration_s);
// send RTCMStream packets
void send_RTCMStream(const uint8_t *data, uint32_t len);
template <typename DataType_>
class RegistryBinder {
protected:
typedef void (*Registry)(AP_UAVCAN* _ap_uavcan, uint8_t _node_id, const RegistryBinder& _cb);
AP_UAVCAN* _uc;
Registry _ffunc;
public:
RegistryBinder() :
_uc(),
_ffunc(),
msg() {}
RegistryBinder(AP_UAVCAN* uc, Registry ffunc) :
_uc(uc),
_ffunc(ffunc),
msg(nullptr) {}
void operator()(const uavcan::ReceivedDataStructure<DataType_>& _msg) {
msg = &_msg;
_ffunc(_uc, _msg.getSrcNodeID().get(), *this);
}
const uavcan::ReceivedDataStructure<DataType_> *msg;
};
private:
// This will be needed to implement if UAVCAN is used with multithreading
// Such cases will be firmware update, etc.
class RaiiSynchronizer {};
void loop(void);
///// SRV output /////
void SRV_send_actuator();
void SRV_send_esc();
///// LED /////
void led_out_send();
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// buzzer
void buzzer_send();
// SafetyState
void safety_state_send();
// send GNSS injection
void rtcm_stream_send();
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uavcan::PoolAllocator<UAVCAN_NODE_POOL_SIZE, UAVCAN_NODE_POOL_BLOCK_SIZE, AP_UAVCAN::RaiiSynchronizer> _node_allocator;
// UAVCAN parameters
AP_Int8 _uavcan_node;
AP_Int32 _servo_bm;
AP_Int32 _esc_bm;
AP_Int16 _servo_rate_hz;
uavcan::Node<0> *_node;
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uint8_t _driver_index;
uavcan::CanIfaceMgr* _iface_mgr;
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char _thread_name[13];
bool _initialized;
///// SRV output /////
struct {
uint16_t pulse;
bool esc_pending;
bool servo_pending;
} _SRV_conf[UAVCAN_SRV_NUMBER];
uint8_t _SRV_armed;
uint32_t _SRV_last_send_us;
HAL_Semaphore SRV_sem;
///// LED /////
struct led_device {
uint8_t led_index;
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uint8_t red;
uint8_t green;
uint8_t blue;
};
struct {
led_device devices[AP_UAVCAN_MAX_LED_DEVICES];
uint8_t devices_count;
uint64_t last_update;
} _led_conf;
HAL_Semaphore _led_out_sem;
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// buzzer
struct {
HAL_Semaphore sem;
float frequency;
float duration;
uint8_t pending_mask; // mask of interfaces to send to
} _buzzer;
// GNSS RTCM injection
struct {
HAL_Semaphore sem;
uint32_t last_send_ms;
ByteBuffer *buf;
} _rtcm_stream;
// ESC
static HAL_Semaphore _telem_sem;
struct esc_data {
uint8_t temp;
uint16_t voltage;
uint16_t current;
uint16_t total_current;
uint16_t rpm;
uint16_t count; //count of telemetry packets received (wraps at 65535).
bool available;
};
static esc_data _escs_data[UAVCAN_SRV_NUMBER];
// safety status send state
uint32_t _last_safety_state_ms;
// incoming button handling
static void handle_button(AP_UAVCAN* ap_uavcan, uint8_t node_id, const ButtonCb &cb);
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static void handle_traffic_report(AP_UAVCAN* ap_uavcan, uint8_t node_id, const TrafficReportCb &cb);
static void handle_actuator_status(AP_UAVCAN* ap_uavcan, uint8_t node_id, const ActuatorStatusCb &cb);
static void handle_ESC_status(AP_UAVCAN* ap_uavcan, uint8_t node_id, const ESCStatusCb &cb);
static bool is_esc_data_index_valid(const uint8_t index);
static void handle_debug(AP_UAVCAN* ap_uavcan, uint8_t node_id, const DebugCb &cb);
};
#endif // #if HAL_ENABLE_LIBUAVCAN_DRIVERS