Hi,
I need some help as to how to encode my packet I send, there are most probably some other improvements I can also have in my code (but very new to coding)
I have managed to send the packet as a “String” but want to send in HEX.
Thanks
#include "mbed.h"
#include "DS1820.h"
#include "mDot.h"
#include "MTSLog.h"
#include "MTSText.h"
#include <string>
#include <vector>
using namespace mts;
#define MIN(a,b) (((a)<(b))?(a):(b))
#define MAX(a,b) (((a)>(b))?(a):(b))
// AppEUI
uint8_t AppEUI[8]={ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
// AppKey
uint8_t AppKey[16]={ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
// Some defines for the LoRa configuration
/*
* EU868 Datarates
* ---------------
* DR0 - SF12BW125
* DR1 - SF11BW125
* DR2 - SF10BW125
* DR3 - SF9BW125
* DR4 - SF8BW125
* DR5 - SF7BW125
* DR6 - SF7BW250
*/
#define LORA_SF mDot::DR5
#define LORA_ACK 0
#define LORA_TXPOWER 14
// Ignoring sub band for EU modules.
static uint8_t config_frequency_sub_band = 1;
// DS18B20 OneWire pin
// D2 on Dev Board, pin 13 on mDot
#define DATA_PIN PC_13
// Temperature sensor object
DS1820 probe(DATA_PIN); //Temprature in
//Capacitive Soil Moisture Sensor V1.2 No1
// A0 on Dev Board, pin 20 on mDot
AnalogIn A1(PB_1); //Analog 1 in for Soil Moisture
//Capacitive Soil Moisture Sensor V1.2 No2
// A1 on Dev Board, pin 19 on mDot
AnalogIn A2(PB_0); //Analog 2 in for Soil Moisture
// Serial via USB for debugging only
Serial pc(USBTX,USBRX);
int main()
{
int32_t ret;
mDot* dot;
std::vector<uint8_t> send_data;
std::vector<uint8_t> recv_data;
std::vector<uint8_t> nwkId;
std::vector<uint8_t> nwkKey;
float temperature = 0.0;
pc.baud(115200);
pc.printf("TTN OTAA mDot LoRa Temperature sensor\n\r");
// get a mDot handle
dot = mDot::getInstance();
// dot->setLogLevel(MTSLog::WARNING_LEVEL);
dot->setLogLevel(MTSLog::TRACE_LEVEL);
logInfo("Checking Config");
uint8_t *it = AppEUI;
for (uint8_t i = 0; i<8; i++)
nwkId.push_back((uint8_t) *it++);
it = AppKey;
for (uint8_t i = 0; i<16; i++)
nwkKey.push_back((uint8_t) *it++);
logInfo("Resetting Config");
// reset to default config so we know what state we're in
dot->resetConfig();
// Set Spreading Factor, higher is lower data rate, smaller packets but longer range
// Lower is higher data rate, larger packets and shorter range.
logInfo("Set SF");
if((ret = dot->setTxDataRate( LORA_SF )) != mDot::MDOT_OK) {
logError("Failed to set SF %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
}
logInfo("Set TxPower");
if((ret = dot->setTxPower( LORA_TXPOWER )) != mDot::MDOT_OK) {
logError("Failed to set Tx Power %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
}
logInfo("Set Public mode");
if((ret = dot->setPublicNetwork(true)) != mDot::MDOT_OK) {
logError("failed to set Public Mode %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
}
logInfo("Set AUTO_OTA Join mode");
if((ret = dot->setJoinMode(mDot::AUTO_OTA)) != mDot::MDOT_OK) {
logError("Failed to set AUTO_OTA Join Mode %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
}
logInfo("Set Ack");
// 1 retries on Ack, 0 to disable
if((ret = dot->setAck( LORA_ACK)) != mDot::MDOT_OK) {
logError("Failed to set Ack %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
}
// Library ignores the frequency sub band for 868MHz in EU
if ((ret = dot->setFrequencySubBand(config_frequency_sub_band)) != mDot::MDOT_OK) {
logError("Failed to set frequency sub band %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
}
logInfo("Set Network Id");
if ((ret = dot->setNetworkId(nwkId)) != mDot::MDOT_OK) {
logError("Failed to set Network Id %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
}
logInfo("Set Network Key");
if ((ret = dot->setNetworkKey(nwkKey)) != mDot::MDOT_OK) {
logError("Failed to set Network Id %d:%s", ret, mDot::getReturnCodeString(ret).c_str());
}
logInfo("Saving Config");
// Save config
if (! dot->saveConfig()) {
logError("failed to save configuration");
}
pc.printf("Device ID {");
std::vector<uint8_t> deviceId;
deviceId = dot->getDeviceId();
for (std::vector<uint8_t>::iterator it = deviceId.begin() ; it != deviceId.end(); ++it) {
pc.printf("0x%2.2X",*it );
pc.printf("%s", it != (deviceId.end() -1 ) ? ", " : " " );
}
pc.printf("}\r\n");
std::vector<uint8_t> netId;
pc.printf("Network Id/App EUI {");
netId = dot->getNetworkId();
for (std::vector<uint8_t>::iterator it = netId.begin() ; it != netId.end(); ++it) {
pc.printf("0x%2.2X", *it );
pc.printf("%s", it != (netId.end() -1 ) ? ", " : " " );
}
pc.printf("}\r\n");
std::vector<uint8_t> netKey;
pc.printf("Network Key/App Key {");
netKey = dot->getNetworkKey();
for (std::vector<uint8_t>::iterator it = netKey.begin() ; it != netKey.end(); ++it) {
pc.printf("0x%2.2X", *it );
pc.printf("%s", it != (netKey.end() -1 ) ? ", " : " " );
}
pc.printf("}\r\n");
// Display LoRa parameters
// Display label and values in different colours, show pretty values not numeric values where applicable
/*
pc.printf("Public Network: %s\r\n", (char*)(dot->getPublicNetwork() ? "Yes" : "No") );
pc.printf("Frequency: %s\r\n", (char*)mDot::FrequencyBandStr(dot->getFrequencyBand()).c_str() );
pc.printf("Sub Band: %s\r\n", (char*)mDot::FrequencySubBandStr(dot->getFrequencySubBand()).c_str() );
pc.printf("Join Mode: %s\r\n", (char*)mDot::JoinModeStr(dot->getJoinMode()).c_str() );
pc.printf("Join Retries: %d\r\n", dot->getJoinRetries() );
pc.printf("Join Byte Order: %s\r\n", (char*)(dot->getJoinByteOrder() == 0 ? "LSB" : "MSB") );
pc.printf("Link Check Count: %d\r\n", dot->getLinkCheckCount() );
pc.printf("Link Check Thold: %d\r\n", dot->getLinkCheckThreshold() );
pc.printf("Tx Data Rate: %s\r\n", (char*)mDot::DataRateStr(dot->getTxDataRate()).c_str() );
pc.printf("Tx Power: %d\r\n", dot->getTxPower() );
pc.printf("TxWait: %s, ", (dot->getTxWait() ? "Y" : "N" ));
pc.printf("CRC: %s, ", (dot->getCrc() ? "Y" : "N") );
pc.printf("Ack: %s\r\n", (dot->getAck() ? "Y" : "N") );
*/
logInfo("Joining Network");
while ((ret = dot->joinNetwork()) != mDot::MDOT_OK) {
logError("failed to join network [%d][%s]", ret, mDot::getReturnCodeString(ret).c_str());
wait_ms(dot->getNextTxMs() + 1);
}
logInfo("Joined Network");
// Display Network session key and data session key from Join command
/*
std::vector<uint8_t> tmp = dot->getNetworkSessionKey();
pc.printf("Network Session Key: ");
pc.printf("%s\r\n", mts::Text::bin2hexString(tmp, " ").c_str());
tmp = dot->getDataSessionKey();
pc.printf("Data Session Key: ");
pc.printf("%s\r\n", mts::Text::bin2hexString(tmp, " ").c_str());
*/
// Set the Temperature sesnor resolution, 9 bits is enough and makes it faster to provide a reading.
probe.setResolution(9);
char dataBuf[50];
while( 1 ) {
float analog1; //Analog 1 in for Soil Moisture No.1
analog1 = A1.read() * 3.3;
float analog2; //Analog 2 in for Soil Moisture No.2
analog2 = A2.read() * 3.3;
//Start temperature conversion, wait until ready
probe.convertTemperature(true, DS1820::all_devices);
// Output data as JSON e.g. {"t":21.3}
temperature = probe.temperature();
//sprintf(dataBuf, "%3.1f", temperature );
sprintf(dataBuf, "%3.1f,%3.1f,%04.2f", temperature , analog1 , analog2 );
pc.printf("%s\n",dataBuf);
send_data.clear();
// probably not the most efficent way to do this
for( int i=0; i< strlen(dataBuf); i++ )
send_data.push_back( dataBuf[i] );
if ((ret = dot->send(send_data)) != mDot::MDOT_OK) {
logError("failed to send: [%d][%s]", ret, mDot::getReturnCodeString(ret).c_str());
} else {
logInfo("send data: %s", Text::bin2hexString(send_data).c_str());
}
// Should sleep here and wakeup after a set 10 minute interval.
// in the 868 (EU) frequency band, we need to wait until another channel is available before transmitting again
uint32_t sleep_time = std::max((uint32_t)600000, (uint32_t)dot->getNextTxMs()) / 1000;
// go to sleep and wake up automatically sleep_time seconds later
dot->sleep(sleep_time, mDot::RTC_ALARM);
}
}
Moderator edit to remove keys and link that may reveal keys.
