/* * Author: Jon Trulson * Copyright (c) 2017 Intel Corporation. * * 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 #include #include #include #include "rn2903.h" #include "upm_utilities.h" #include "upm_platform.h" bool shouldRun = true; void sig_handler(int signo) { if (signo == SIGINT) shouldRun = false; } #if defined(UPM_PLATFORM_ZEPHYR) && !defined(CONFIG_STDOUT_CONSOLE) # define printf printk #endif int main(int argc, char **argv) { //! [Interesting] char *defaultDev = "/dev/ttyUSB0"; if (argc > 1) defaultDev = argv[1]; printf("Using device: %s\n", defaultDev); // Instantiate a RN2903 sensor on defaultDev at 57600 baud. #if defined(UPM_PLATFORM_ZEPHYR) rn2903_context sensor = rn2903_init(0, RN2903_DEFAULT_BAUDRATE); #else rn2903_context sensor = rn2903_init_tty(defaultDev, RN2903_DEFAULT_BAUDRATE); #endif // To use an internal UART understood by MRAA, use the following // to inititialize rather than the above, which by default uses a // tty path. // // rn2903_context sensor = rn2903_init(0, RN2903_DEFAULT_BAUDRATE); if (!sensor) { printf("rn2903_init_tty() failed.\n"); return 1; } // enable debugging // rn2903_set_debug(sensor, true); // get version if (rn2903_command(sensor, "sys get ver")) { printf("Failed to retrieve device version string\n"); rn2903_close(sensor); return 1; } printf("Firmware version: %s\n", rn2903_get_response(sensor)); printf("Hardware EUI: %s\n", rn2903_get_hardware_eui(sensor)); // For this example, we will just try transmitting a packet over // LoRa. We reset the device to defaults, and we do not make any // adjustments to the radio configuration. You will probably want // to do so for a real life application. // The first thing to do is to suspend the LoRaWAN stack on the device. if (rn2903_mac_pause(sensor)) { printf("Failed to pause the LoRaWAN stack\n"); rn2903_close(sensor); return 1; } // the default radio watchdog timer is set for 15 seconds, so we // will send a packet every 10 seconds. In reality, local // restrictions limit the amount of time on the air, so in a real // implementation, you would not want to send packets that // frequently. int count = 0; while (shouldRun) { char pingbuf[32] = {}; snprintf(pingbuf, 32, "Ping %d", count++); // All payloads must be hex encoded const char *payload = rn2903_to_hex(sensor, pingbuf, strlen(pingbuf)); printf("Transmitting a packet, data: '%s' -> hex: '%s'\n", pingbuf, payload); RN2903_RESPONSE_T rv; rv = rn2903_radio_tx(sensor, payload); if (rv == RN2903_RESPONSE_OK) printf("Transmit successful.\n"); else printf("Transmit failed with code %d.\n", rv); printf("\n"); upm_delay(10); } printf("Exiting\n"); rn2903_close(sensor); //! [Interesting] return 0; }