Dia antes primera install

node_modules/i2c-bus/src/setaddr.cc

@@ -0,0 +1,69 @@
+#include <errno.h>
+#include <node.h>
+#include <nan.h>
+#include "./i2c-dev.h"
+#include "./setaddr.h"
+#include "./util.h"
+
+static int SetAddr(int fd, int addr, bool forceAccess) {
+  return ioctl(fd, forceAccess ? I2C_SLAVE_FORCE : I2C_SLAVE, addr);
+}
+
+class SetAddrWorker : public I2cAsyncWorker {
+public:
+  SetAddrWorker(Nan::Callback *callback, int fd, int addr, bool forceAccess)
+    : I2cAsyncWorker(callback), fd(fd), addr(addr), forceAccess(forceAccess) {}
+  ~SetAddrWorker() {}
+
+  void Execute() {
+    if (SetAddr(fd, addr, forceAccess) == -1) {
+      SetErrorNo(errno);
+      SetErrorSyscall("setAddr");
+    }
+  }
+
+  void HandleOKCallback() {
+    Nan::HandleScope scope;
+
+    v8::Local<v8::Value> argv[] = {
+      Nan::Null()
+    };
+
+    callback->Call(1, argv, async_resource);
+  }
+
+private:
+  int fd;
+  int addr;
+  bool forceAccess;
+};
+
+NAN_METHOD(SetAddrAsync) {
+  if (info.Length() < 4 || !info[0]->IsInt32() || !info[1]->IsInt32() || !info[2]->IsBoolean() || !info[3]->IsFunction()) {
+    return Nan::ThrowError(Nan::ErrnoException(EINVAL, "setAddr",
+      "incorrect arguments passed to setAddr(int fd, int addr, bool forceAccess, function cb)"));
+  }
+
+  int fd = Nan::To<int32_t>(info[0]).FromJust();
+  int addr = Nan::To<int32_t>(info[1]).FromJust();
+  bool forceAccess = Nan::To<bool>(info[2]).FromJust();
+  Nan::Callback *callback = new Nan::Callback(info[3].As<v8::Function>());
+
+  Nan::AsyncQueueWorker(new SetAddrWorker(callback, fd, addr, forceAccess));
+}
+
+NAN_METHOD(SetAddrSync) {
+  if (info.Length() < 3 || !info[0]->IsInt32() || !info[1]->IsInt32() || !info[2]->IsBoolean()) {
+    return Nan::ThrowError(Nan::ErrnoException(EINVAL, "setAddrSync",
+      "incorrect arguments passed to setAddrSync(int fd, int addr, bool forceAccess)"));
+  }
+
+  int fd = Nan::To<int32_t>(info[0]).FromJust();
+  int addr = Nan::To<int32_t>(info[1]).FromJust();
+  bool forceAccess = Nan::To<bool>(info[2]).FromJust();
+
+  if (SetAddr(fd, addr, forceAccess) != 0) {
+    return Nan::ThrowError(Nan::ErrnoException(errno, "setAddrSync", ""));
+  }
+}
+