// ucoolib - Microcontroller object oriented library. {{{ // // Copyright (C) 2013 Nicolas Schodet // // Permission is hereby granted, free of charge, to any person obtaining a // copy of this software and associated documentation files (the "Software"), // to deal in the Software without restriction, including without limitation // the rights to use, copy, modify, merge, publish, distribute, sublicense, // and/or sell copies of the Software, and to permit persons to whom the // Software is furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER // DEALINGS IN THE SOFTWARE. // // }}} #include "adc.host.hh" #include namespace ucoo { /// Shared context between instances. class AdcHostShared { public: /// Constructor, connect to mex node. AdcHostShared (Host &host); /// Register a new instance. void register_instance (Host &host, AdcHost &instance, const char *name); private: /// Handle value from Mex. void handle_adc_channel (mex::Msg &msg); private: Host &host_; typedef std::map Instances; Instances instances_; }; AdcHostShared::AdcHostShared (Host &host) : host_ (host) { std::string instance = host_.get_instance (); mex::Node &node = host_.get_node (); mex::mtype_t mtype = node.reserve (instance + ":adc_channel"); node.handler_register (mtype, *this, &AdcHostShared::handle_adc_channel); } void AdcHostShared::register_instance (Host &host, AdcHost &instance, const char *name) { assert (&host == &host_); std::pair r = instances_.insert (Instances::value_type (name, &instance)); assert (r.second); } void AdcHostShared::handle_adc_channel (mex::Msg &msg) { int ivalue, namelen; msg.pop ("l") >> ivalue; namelen = msg.len (); std::string name (msg.pop (namelen), namelen); Instances::iterator i = instances_.find (name); assert (i != instances_.end ()); double fvalue = ivalue / (double) (1u << 31); i->second->value_ = fvalue * i->second->resolution_; } AdcHostShared *AdcHost::shared_; AdcHost::AdcHost (Host &host, const char *name, int resolution) : resolution_ (resolution), value_ (0) { if (!shared_) { static AdcHostShared shared (host); shared_ = &shared; } shared_->register_instance (host, *this, name); } } // namespace ucoo