server_variable.c 2.4 KB

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