ardupilot/libraries/AP_Baro/AP_Baro_UAVCAN.cpp

185 lines
6.1 KiB
C++

#include <AP_HAL/AP_HAL.h>
#if HAL_WITH_UAVCAN
#include "AP_Baro_UAVCAN.h"
#include <AP_BoardConfig/AP_BoardConfig_CAN.h>
#include <AP_UAVCAN/AP_UAVCAN.h>
#include <uavcan/equipment/air_data/StaticPressure.hpp>
#include <uavcan/equipment/air_data/StaticTemperature.hpp>
extern const AP_HAL::HAL& hal;
#define debug_baro_uavcan(level_debug, can_driver, fmt, args...) do { if ((level_debug) <= AP::can().get_debug_level_driver(can_driver)) { printf(fmt, ##args); }} while (0)
//UAVCAN Frontend Registry Binder
UC_REGISTRY_BINDER(PressureCb, uavcan::equipment::air_data::StaticPressure);
UC_REGISTRY_BINDER(TemperatureCb, uavcan::equipment::air_data::StaticTemperature);
AP_Baro_UAVCAN::DetectedModules AP_Baro_UAVCAN::_detected_modules[] = {0};
HAL_Semaphore AP_Baro_UAVCAN::_sem_registry;
/*
constructor - registers instance at top Baro driver
*/
AP_Baro_UAVCAN::AP_Baro_UAVCAN(AP_Baro &baro) :
AP_Baro_Backend(baro)
{}
void AP_Baro_UAVCAN::subscribe_msgs(AP_UAVCAN* ap_uavcan)
{
if (ap_uavcan == nullptr) {
return;
}
auto* node = ap_uavcan->get_node();
uavcan::Subscriber<uavcan::equipment::air_data::StaticPressure, PressureCb> *pressure_listener;
pressure_listener = new uavcan::Subscriber<uavcan::equipment::air_data::StaticPressure, PressureCb>(*node);
// Msg Handler
const int pressure_listener_res = pressure_listener->start(PressureCb(ap_uavcan, &handle_pressure));
if (pressure_listener_res < 0) {
AP_HAL::panic("UAVCAN Baro subscriber start problem\n\r");
return;
}
uavcan::Subscriber<uavcan::equipment::air_data::StaticTemperature, TemperatureCb> *temperature_listener;
temperature_listener = new uavcan::Subscriber<uavcan::equipment::air_data::StaticTemperature, TemperatureCb>(*node);
// Msg Handler
const int temperature_listener_res = temperature_listener->start(TemperatureCb(ap_uavcan, &handle_temperature));
if (temperature_listener_res < 0) {
AP_HAL::panic("UAVCAN Baro subscriber start problem\n\r");
return;
}
}
bool AP_Baro_UAVCAN::take_registry()
{
return _sem_registry.take(HAL_SEMAPHORE_BLOCK_FOREVER);
}
void AP_Baro_UAVCAN::give_registry()
{
_sem_registry.give();
}
AP_Baro_Backend* AP_Baro_UAVCAN::probe(AP_Baro &baro)
{
if (!take_registry()) {
return nullptr;
}
AP_Baro_UAVCAN* backend = nullptr;
for (uint8_t i = 0; i < BARO_MAX_DRIVERS; i++) {
if (_detected_modules[i].driver == nullptr && _detected_modules[i].ap_uavcan != nullptr) {
backend = new AP_Baro_UAVCAN(baro);
if (backend == nullptr) {
debug_baro_uavcan(2,
_detected_modules[i].ap_uavcan->get_driver_index(),
"Failed register UAVCAN Baro 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;
backend->_ap_uavcan = _detected_modules[i].ap_uavcan;
backend->_node_id = _detected_modules[i].node_id;
backend->register_sensor();
debug_baro_uavcan(2,
_detected_modules[i].ap_uavcan->get_driver_index(),
"Registered UAVCAN Baro Node %d on Bus %d\n",
_detected_modules[i].node_id,
_detected_modules[i].ap_uavcan->get_driver_index());
}
break;
}
}
give_registry();
return backend;
}
AP_Baro_UAVCAN* AP_Baro_UAVCAN::get_uavcan_backend(AP_UAVCAN* ap_uavcan, uint8_t node_id, bool create_new)
{
if (ap_uavcan == nullptr) {
return nullptr;
}
for (uint8_t i = 0; i < BARO_MAX_DRIVERS; 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;
}
}
if (create_new) {
bool already_detected = false;
//Check if there's an empty spot for possible registeration
for (uint8_t i = 0; i < BARO_MAX_DRIVERS; i++) {
if (_detected_modules[i].ap_uavcan == ap_uavcan && _detected_modules[i].node_id == node_id) {
//Already Detected
already_detected = true;
break;
}
}
if (!already_detected) {
for (uint8_t i = 0; i < BARO_MAX_DRIVERS; 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_Baro_UAVCAN::handle_pressure(AP_UAVCAN* ap_uavcan, uint8_t node_id, const PressureCb &cb)
{
if (take_registry()) {
AP_Baro_UAVCAN* driver = get_uavcan_backend(ap_uavcan, node_id, true);
if (driver == nullptr) {
give_registry();
return;
}
{
WITH_SEMAPHORE(driver->_sem_baro);
driver->_pressure = cb.msg->static_pressure;
driver->new_pressure = true;
}
give_registry();
}
}
void AP_Baro_UAVCAN::handle_temperature(AP_UAVCAN* ap_uavcan, uint8_t node_id, const TemperatureCb &cb)
{
if (take_registry()) {
AP_Baro_UAVCAN* driver = get_uavcan_backend(ap_uavcan, node_id, false);
if (driver == nullptr) {
give_registry();
return;
}
{
WITH_SEMAPHORE(driver->_sem_baro);
driver->_temperature = cb.msg->static_temperature - C_TO_KELVIN;
}
give_registry();
}
}
// Read the sensor
void AP_Baro_UAVCAN::update(void)
{
WITH_SEMAPHORE(_sem_baro);
if (new_pressure) {
_copy_to_frontend(_instance, _pressure, _temperature);
_frontend.set_external_temperature(_temperature);
new_pressure = false;
}
}
#endif // HAL_WITH_UAVCAN