saket mishra
zcbvsDG
Diff: src/peer_to_peer_example.cpp
- Revision:
- 0:aa8df9825311
diff -r 000000000000 -r aa8df9825311 src/peer_to_peer_example.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/peer_to_peer_example.cpp Mon Sep 25 09:41:00 2017 +0000
@@ -0,0 +1,200 @@
+#include "dot_util.h"
+#include "RadioEvent.h"
+
+#if ACTIVE_EXAMPLE == PEER_TO_PEER_EXAMPLE
+
+/////////////////////////////////////////////////////////////////////////////
+// -------------------- DOT LIBRARY REQUIRED ------------------------------//
+// * Because these example programs can be used for both mDot and xDot //
+// devices, the LoRa stack is not included. The libmDot library should //
+// be imported if building for mDot devices. The libxDot library //
+// should be imported if building for xDot devices. //
+// * https://developer.mbed.org/teams/MultiTech/code/libmDot-dev-mbed5/ //
+// * https://developer.mbed.org/teams/MultiTech/code/libmDot-mbed5/ //
+// * https://developer.mbed.org/teams/MultiTech/code/libxDot-dev-mbed5/ //
+// * https://developer.mbed.org/teams/MultiTech/code/libxDot-mbed5/ //
+/////////////////////////////////////////////////////////////////////////////
+
+/////////////////////////////////////////////////////////////
+// * these options must match between the two devices in //
+// order for communication to be successful
+/////////////////////////////////////////////////////////////
+static uint8_t network_address[] = { 0x01, 0x02, 0x03, 0x04 };
+static uint8_t network_session_key[] = { 0x01, 0x02, 0x03, 0x04, 0x01, 0x02, 0x03, 0x04, 0x01, 0x02, 0x03, 0x04, 0x01, 0x02, 0x03, 0x04 };
+static uint8_t data_session_key[] = { 0x01, 0x02, 0x03, 0x04, 0x01, 0x02, 0x03, 0x04, 0x01, 0x02, 0x03, 0x04, 0x01, 0x02, 0x03, 0x04 };
+
+mDot* dot = NULL;
+lora::ChannelPlan* plan = NULL;
+
+Serial pc(USBTX, USBRX);
+
+#if defined(TARGET_XDOT_L151CC)
+I2C i2c(I2C_SDA, I2C_SCL);
+ISL29011 lux(i2c);
+#else
+AnalogIn lux(XBEE_AD0);
+#endif
+
+int main() {
+ // Custom event handler for automatically displaying RX data
+ RadioEvent events;
+ uint32_t tx_frequency;
+ uint8_t tx_datarate;
+ uint8_t tx_power;
+ uint8_t frequency_band;
+
+ pc.baud(115200);
+
+ mts::MTSLog::setLogLevel(mts::MTSLog::TRACE_LEVEL);
+
+#if CHANNEL_PLAN == CP_US915
+ plan = new lora::ChannelPlan_US915();
+#elif CHANNEL_PLAN == CP_AU915
+ plan = new lora::ChannelPlan_AU915();
+#elif CHANNEL_PLAN == CP_EU868
+ plan = new lora::ChannelPlan_EU868();
+#elif CHANNEL_PLAN == CP_KR920
+ plan = new lora::ChannelPlan_KR920();
+#elif CHANNEL_PLAN == CP_AS923
+ plan = new lora::ChannelPlan_AS923();
+#elif CHANNEL_PLAN == CP_AS923_JAPAN
+ plan = new lora::ChannelPlan_AS923_Japan();
+#elif CHANNEL_PLAN == CP_IN865
+ plan = new lora::ChannelPlan_IN865();
+#endif
+ assert(plan);
+
+ dot = mDot::getInstance(plan);
+ assert(dot);
+
+ logInfo("mbed-os library version: %d", MBED_LIBRARY_VERSION);
+
+ // start from a well-known state
+ logInfo("defaulting Dot configuration");
+ dot->resetConfig();
+
+ // make sure library logging is turned on
+ dot->setLogLevel(mts::MTSLog::INFO_LEVEL);
+
+ // attach the custom events handler
+ dot->setEvents(&events);
+
+ // update configuration if necessary
+ if (dot->getJoinMode() != mDot::PEER_TO_PEER) {
+ logInfo("changing network join mode to PEER_TO_PEER");
+ if (dot->setJoinMode(mDot::PEER_TO_PEER) != mDot::MDOT_OK) {
+ logError("failed to set network join mode to PEER_TO_PEER");
+ }
+ }
+ frequency_band = dot->getFrequencyBand();
+ switch (frequency_band) {
+ case lora::ChannelPlan::EU868_OLD:
+ case lora::ChannelPlan::EU868:
+ // 250kHz channels achieve higher throughput
+ // DR_6 : SF7 @ 250kHz
+ // DR_0 - DR_5 (125kHz channels) available but much slower
+ tx_frequency = 869850000;
+ tx_datarate = lora::DR_6;
+ // the 869850000 frequency is 100% duty cycle if the total power is under 7 dBm - tx power 4 + antenna gain 3 = 7
+ tx_power = 4;
+ break;
+
+ case lora::ChannelPlan::US915_OLD:
+ case lora::ChannelPlan::US915:
+ case lora::ChannelPlan::AU915_OLD:
+ case lora::ChannelPlan::AU915:
+ // 500kHz channels achieve highest throughput
+ // DR_8 : SF12 @ 500kHz
+ // DR_9 : SF11 @ 500kHz
+ // DR_10 : SF10 @ 500kHz
+ // DR_11 : SF9 @ 500kHz
+ // DR_12 : SF8 @ 500kHz
+ // DR_13 : SF7 @ 500kHz
+ // DR_0 - DR_3 (125kHz channels) available but much slower
+ tx_frequency = 915500000;
+ tx_datarate = lora::DR_13;
+ // 915 bands have no duty cycle restrictions, set tx power to max
+ tx_power = 20;
+ break;
+
+ case lora::ChannelPlan::AS923:
+ case lora::ChannelPlan::AS923_JAPAN:
+ // 250kHz channels achieve higher throughput
+ // DR_6 : SF7 @ 250kHz
+ // DR_0 - DR_5 (125kHz channels) available but much slower
+ tx_frequency = 924800000;
+ tx_datarate = lora::DR_6;
+ tx_power = 16;
+ break;
+
+ case lora::ChannelPlan::KR920:
+ // DR_5 : SF7 @ 125kHz
+ tx_frequency = 922700000;
+ tx_datarate = lora::DR_5;
+ tx_power = 14;
+ break;
+
+ default:
+ while (true) {
+ logFatal("no known channel plan in use - extra configuration is needed!");
+ wait(5);
+ }
+ break;
+ }
+ // in PEER_TO_PEER mode there is no join request/response transaction
+ // as long as both Dots are configured correctly, they should be able to communicate
+ update_peer_to_peer_config(network_address, network_session_key, data_session_key, tx_frequency, tx_datarate, tx_power);
+
+ // save changes to configuration
+ logInfo("saving configuration");
+ if (!dot->saveConfig()) {
+ logError("failed to save configuration");
+ }
+
+ // display configuration
+ display_config();
+
+#if defined(TARGET_XDOT_L151CC)
+ // configure the ISL29011 sensor on the xDot-DK for continuous ambient light sampling, 16 bit conversion, and maximum range
+ lux.setMode(ISL29011::ALS_CONT);
+ lux.setResolution(ISL29011::ADC_16BIT);
+ lux.setRange(ISL29011::RNG_64000);
+#endif
+
+ while (true) {
+ uint16_t light;
+ std::vector<uint8_t> tx_data;
+
+ // join network if not joined
+ if (!dot->getNetworkJoinStatus()) {
+ join_network();
+ }
+
+#if defined(TARGET_XDOT_L151CC)
+ // get the latest light sample and send it to the gateway
+ light = lux.getData();
+ tx_data.push_back((light >> 8) & 0xFF);
+ tx_data.push_back(light & 0xFF);
+ logInfo("light: %lu [0x%04X]", light, light);
+ send_data(tx_data);
+#else
+ // get some dummy data and send it to the gateway
+ light = lux.read_u16();
+ tx_data.push_back((light >> 8) & 0xFF);
+ tx_data.push_back(light & 0xFF);
+ logInfo("light: %lu [0x%04X]", light, light);
+ send_data(tx_data);
+#endif
+
+ // the Dot can't sleep in PEER_TO_PEER mode
+ // it must be waiting for data from the other Dot
+ // send data every 5 seconds
+ logInfo("waiting for 5s");
+ wait(5);
+ }
+
+ return 0;
+}
+
+#endif
+