ardupilot/libraries/AP_Airspeed/AP_Airspeed_UAVCAN.cpp

198 lines
6.2 KiB
C++

#include "AP_Airspeed_UAVCAN.h"
#if AP_AIRSPEED_UAVCAN_ENABLED
#include <AP_CANManager/AP_CANManager.h>
#include <AP_UAVCAN/AP_UAVCAN.h>
#include <AP_BoardConfig/AP_BoardConfig.h>
extern const AP_HAL::HAL& hal;
#define LOG_TAG "AirSpeed"
AP_Airspeed_UAVCAN::DetectedModules AP_Airspeed_UAVCAN::_detected_modules[];
HAL_Semaphore AP_Airspeed_UAVCAN::_sem_registry;
// constructor
AP_Airspeed_UAVCAN::AP_Airspeed_UAVCAN(AP_Airspeed &_frontend, uint8_t _instance) :
AP_Airspeed_Backend(_frontend, _instance)
{}
void AP_Airspeed_UAVCAN::subscribe_msgs(AP_UAVCAN* ap_uavcan)
{
if (ap_uavcan == nullptr) {
return;
}
if (Canard::allocate_sub_arg_callback(ap_uavcan, &handle_airspeed, ap_uavcan->get_driver_index()) == nullptr) {
AP_BoardConfig::allocation_error("airspeed_sub");
}
#if AP_AIRSPEED_HYGROMETER_ENABLE
if (Canard::allocate_sub_arg_callback(ap_uavcan, &handle_hygrometer, ap_uavcan->get_driver_index()) == nullptr) {
AP_BoardConfig::allocation_error("hygrometer_sub");
}
#endif
}
AP_Airspeed_Backend* AP_Airspeed_UAVCAN::probe(AP_Airspeed &_frontend, uint8_t _instance, uint32_t previous_devid)
{
WITH_SEMAPHORE(_sem_registry);
AP_Airspeed_UAVCAN* backend = nullptr;
for (uint8_t i = 0; i < AIRSPEED_MAX_SENSORS; i++) {
if (_detected_modules[i].driver == nullptr && _detected_modules[i].ap_uavcan != nullptr) {
const auto bus_id = AP_HAL::Device::make_bus_id(AP_HAL::Device::BUS_TYPE_UAVCAN,
_detected_modules[i].ap_uavcan->get_driver_index(),
_detected_modules[i].node_id, 0);
if (previous_devid != 0 && previous_devid != bus_id) {
// match with previous ID only
continue;
}
backend = new AP_Airspeed_UAVCAN(_frontend, _instance);
if (backend == nullptr) {
AP::can().log_text(AP_CANManager::LOG_INFO,
LOG_TAG,
"Failed register UAVCAN Airspeed Node %d on Bus %d\n",
_detected_modules[i].node_id,
_detected_modules[i].ap_uavcan->get_driver_index());
} else {
_detected_modules[i].driver = backend;
AP::can().log_text(AP_CANManager::LOG_INFO,
LOG_TAG,
"Registered UAVCAN Airspeed Node %d on Bus %d\n",
_detected_modules[i].node_id,
_detected_modules[i].ap_uavcan->get_driver_index());
backend->set_bus_id(bus_id);
}
break;
}
}
return backend;
}
AP_Airspeed_UAVCAN* AP_Airspeed_UAVCAN::get_uavcan_backend(AP_UAVCAN* ap_uavcan, uint8_t node_id)
{
if (ap_uavcan == nullptr) {
return nullptr;
}
for (uint8_t i = 0; i < AIRSPEED_MAX_SENSORS; i++) {
if (_detected_modules[i].driver != nullptr &&
_detected_modules[i].ap_uavcan == ap_uavcan &&
_detected_modules[i].node_id == node_id ) {
return _detected_modules[i].driver;
}
}
bool detected = false;
for (uint8_t i = 0; i < AIRSPEED_MAX_SENSORS; i++) {
if (_detected_modules[i].ap_uavcan == ap_uavcan && _detected_modules[i].node_id == node_id) {
// detected
detected = true;
break;
}
}
if (!detected) {
for (uint8_t i = 0; i < AIRSPEED_MAX_SENSORS; i++) {
if (_detected_modules[i].ap_uavcan == nullptr) {
_detected_modules[i].ap_uavcan = ap_uavcan;
_detected_modules[i].node_id = node_id;
break;
}
}
}
return nullptr;
}
void AP_Airspeed_UAVCAN::handle_airspeed(AP_UAVCAN *ap_uavcan, const CanardRxTransfer& transfer, const uavcan_equipment_air_data_RawAirData &msg)
{
WITH_SEMAPHORE(_sem_registry);
AP_Airspeed_UAVCAN* driver = get_uavcan_backend(ap_uavcan, transfer.source_node_id);
if (driver != nullptr) {
WITH_SEMAPHORE(driver->_sem_airspeed);
driver->_pressure = msg.differential_pressure;
if (!isnan(msg.static_air_temperature) &&
msg.static_air_temperature > 0) {
driver->_temperature = KELVIN_TO_C(msg.static_air_temperature);
driver->_have_temperature = true;
}
driver->_last_sample_time_ms = AP_HAL::millis();
}
}
#if AP_AIRSPEED_HYGROMETER_ENABLE
void AP_Airspeed_UAVCAN::handle_hygrometer(AP_UAVCAN *ap_uavcan, const CanardRxTransfer& transfer, const dronecan_sensors_hygrometer_Hygrometer &msg)
{
WITH_SEMAPHORE(_sem_registry);
AP_Airspeed_UAVCAN* driver = get_uavcan_backend(ap_uavcan, transfer.source_node_id);
if (driver != nullptr) {
WITH_SEMAPHORE(driver->_sem_airspeed);
driver->_hygrometer.temperature = KELVIN_TO_C(msg.temperature);
driver->_hygrometer.humidity = msg.humidity;
driver->_hygrometer.last_sample_ms = AP_HAL::millis();
}
}
#endif // AP_AIRSPEED_HYGROMETER_ENABLE
bool AP_Airspeed_UAVCAN::init()
{
// always returns true
return true;
}
bool AP_Airspeed_UAVCAN::get_differential_pressure(float &pressure)
{
WITH_SEMAPHORE(_sem_airspeed);
if ((AP_HAL::millis() - _last_sample_time_ms) > 100) {
return false;
}
pressure = _pressure;
return true;
}
bool AP_Airspeed_UAVCAN::get_temperature(float &temperature)
{
if (!_have_temperature) {
return false;
}
WITH_SEMAPHORE(_sem_airspeed);
if ((AP_HAL::millis() - _last_sample_time_ms) > 100) {
return false;
}
temperature = _temperature;
return true;
}
#if AP_AIRSPEED_HYGROMETER_ENABLE
/*
return hygrometer data if available
*/
bool AP_Airspeed_UAVCAN::get_hygrometer(uint32_t &last_sample_ms, float &temperature, float &humidity)
{
if (_hygrometer.last_sample_ms == 0) {
return false;
}
WITH_SEMAPHORE(_sem_airspeed);
last_sample_ms = _hygrometer.last_sample_ms;
temperature = _hygrometer.temperature;
humidity = _hygrometer.humidity;
return true;
}
#endif // AP_AIRSPEED_HYGROMETER_ENABLE
#endif // AP_AIRSPEED_UAVCAN_ENABLED