server_variable.c 2.4 KB

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  1. /*
  2. * This work is licensed under a Creative Commons CCZero 1.0 Universal License.
  3. * See http://creativecommons.org/publicdomain/zero/1.0/ for more information.
  4. */
  5. #include <signal.h>
  6. #ifdef UA_NO_AMALGAMATION
  7. # include "ua_types.h"
  8. # include "ua_server.h"
  9. # include "ua_config_standard.h"
  10. # include "networklayer_tcp.h"
  11. #else
  12. # include "open62541.h"
  13. #endif
  14. UA_Boolean running = true;
  15. UA_Logger logger = Logger_Stdout;
  16. static void stopHandler(int sign) {
  17. UA_LOG_INFO(logger, UA_LOGCATEGORY_SERVER, "received ctrl-c");
  18. running = false;
  19. }
  20. static void onRead(void *handle, const UA_NodeId nodeid, const UA_Variant *data, const UA_NumericRange *range) {
  21. UA_LOG_INFO(logger, UA_LOGCATEGORY_USERLAND, "onRead; handle is: %i", (uintptr_t)handle);
  22. }
  23. static void onWrite(void *h, const UA_NodeId nodeid, const UA_Variant *data, const UA_NumericRange *range) {
  24. UA_LOG_INFO(logger, UA_LOGCATEGORY_USERLAND, "onWrite; handle: %i", (uintptr_t)h);
  25. }
  26. int main(int argc, char** argv) {
  27. signal(SIGINT, stopHandler); /* catches ctrl-c */
  28. UA_ServerConfig config = UA_ServerConfig_standard;
  29. UA_ServerNetworkLayer nl = UA_ServerNetworkLayerTCP(UA_ConnectionConfig_standard, 16664);
  30. config.networkLayers = &nl;
  31. config.networkLayersSize = 1;
  32. UA_Server *server = UA_Server_new(config);
  33. /* add a variable node to the address space */
  34. UA_VariableAttributes attr;
  35. UA_VariableAttributes_init(&attr);
  36. UA_Int32 myInteger = 42;
  37. UA_Variant_setScalar(&attr.value, &myInteger, &UA_TYPES[UA_TYPES_INT32]);
  38. attr.description = UA_LOCALIZEDTEXT("en_US","the answer");
  39. attr.displayName = UA_LOCALIZEDTEXT("en_US","the answer");
  40. UA_NodeId myIntegerNodeId = UA_NODEID_STRING(1, "the.answer");
  41. UA_QualifiedName myIntegerName = UA_QUALIFIEDNAME(1, "the answer");
  42. UA_NodeId parentNodeId = UA_NODEID_NUMERIC(0, UA_NS0ID_OBJECTSFOLDER);
  43. UA_NodeId parentReferenceNodeId = UA_NODEID_NUMERIC(0, UA_NS0ID_ORGANIZES);
  44. UA_Server_addVariableNode(server, myIntegerNodeId, parentNodeId,
  45. parentReferenceNodeId, myIntegerName,
  46. UA_NODEID_NULL, attr, NULL, NULL);
  47. UA_ValueCallback callback = {(void*)7, onRead, onWrite};
  48. UA_Server_setVariableNode_valueCallback(server, myIntegerNodeId, callback);
  49. UA_StatusCode retval = UA_Server_run(server, &running);
  50. UA_Server_delete(server);
  51. nl.deleteMembers(&nl);
  52. return (int)retval;
  53. }