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Below is a short example of how an application can send a data struct every 5 seconds, followed by parsing any downstream data received since the last transmission.
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#include <stdlib.h> #include "dn_qsl_api.h" #define NETID 0 // Factory default value used if zero (1229) #define JOINKEY NULL // Factory default value used if NULL (44 55 53 54 4E 45 54 57 4F 52 4B 53 52 4F 43 4B) #define BANDWIDTH_MS 5000 // Not changed if zero (default base bandwidth given by manager is 9 s) #define SRC_PORT 0 // Default port used if zero (0xf0b8) #define DEST_PORT 0 // Default port used if zero (0xf0b8) int main(void) { my_data_struct_t myData; uint8_t bytesRead; uint8_t* myBuffer[DN_DEFAULT_PAYLOAD_SIZE_LIMIT]; if (!dn_qsl_init()) { return; // Initialization failed } while (TRUE) { if (dn_qsl_isConnected()) { /* Prepare myData */ if (!dn_qsl_send(&myData, sizeof (myData), DEST_PORT)) { // Pushing data to the manager failed } do { bytesRead = dn_qsl_read(inboxBuf); /* Parse received data */ } while (bytesRead > 0); /* Wait for next transmission (5000 ms) */ } else { if (dn_qsl_connect(netID, joinKey, srcPort, service_ms)) { // Connected to network } else { // Failed to connect } } } return (EXIT_SUCCESS); } |
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