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authorNicolas Schodet2015-06-03 13:46:44 +0200
committerNicolas Schodet2019-10-07 00:44:44 +0200
commit574480980dcffbfa7cd6dbe71e88253eb4c9feba (patch)
tree5f1c1261341a7c2a56de01d8c6d0815b164be8ba /ucoo/hal/adc/adc.host.cc
parentd415a0646e874848cd06482c5d57916cca5cff4a (diff)
Rename ucoolib modules directory from ucoolib to ucoo
Diffstat (limited to 'ucoo/hal/adc/adc.host.cc')
-rw-r--r--ucoo/hal/adc/adc.host.cc92
1 files changed, 92 insertions, 0 deletions
diff --git a/ucoo/hal/adc/adc.host.cc b/ucoo/hal/adc/adc.host.cc
new file mode 100644
index 0000000..0dfc01d
--- /dev/null
+++ b/ucoo/hal/adc/adc.host.cc
@@ -0,0 +1,92 @@
+// 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 <string>
+
+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<std::string, AdcHost *> 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<Instances::iterator, bool> 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