Hi,
And sorry if this a wrong place to ask such a question…
I’m taking the first steps to get B-L072Z-LRWAN1 connected to TTN. And also novice PlatformIO user, just switching from Arduino IDE.
I have B-L072Z-LRWAN1 defined in platformio.ini (below):
[env:disco_l072cz_lrwan1]
platform = ststm32
board = disco_l072cz_lrwan1
framework = arduino
lib_deps = mcci-catena/MCCI LoRaWAN LMIC library@^4.1.0
build_flags =
; Use platformio.ini for settings instead lmic_project_config.h.
-D ARDUINO_LMIC_PROJECT_CONFIG_H_SUPPRESS
; Ping and beacons not supported for class A, disable to save memory.
-D DISABLE_PING
-D DISABLE_BEACONS
-D CFG_sx1276_radio=1 ; Use for SX1276 radio
-D USE_ORIGINAL_AES ; Faster but larger, see docs
-D CFG_eu868=1
But while compiling main.cpp I get “Unknow target” error.
Why is that?? I read that B-L072Z-LRWAN1 is supported and tested.
I copy-pasted main.cpp from LMIC-node library example in PlatformIO.
Also, why “do_send” error happens? Did I install the library wrong…?
Any help appreciated 
Main.cpp is below.
/*******************************************************************************
* Copyright (c) 2015 Thomas Telkamp and Matthijs Kooijman
* Copyright (c) 2018 Terry Moore, MCCI
*
* Permission is hereby granted, free of charge, to anyone
* obtaining a copy of this document and accompanying files,
* to do whatever they want with them without any restriction,
* including, but not limited to, copying, modification and redistribution.
* NO WARRANTY OF ANY KIND IS PROVIDED.
*
* This example sends a valid LoRaWAN packet with payload "Hello,
* world!", using frequency and encryption settings matching those of
* the The Things Network. It's pre-configured for the Adafruit
* Feather M0 LoRa.
*
* This uses OTAA (Over-the-air activation), where where a DevEUI and
* application key is configured, which are used in an over-the-air
* activation procedure where a DevAddr and session keys are
* assigned/generated for use with all further communication.
*
* Note: LoRaWAN per sub-band duty-cycle limitation is enforced (1% in
* g1, 0.1% in g2), but not the TTN fair usage policy (which is probably
* violated by this sketch when left running for longer)!
* To use this sketch, first register your application and device with
* the things network, to set or generate an AppEUI, DevEUI and AppKey.
* Multiple devices can use the same AppEUI, but each device has its own
* DevEUI and AppKey.
*
* Do not forget to define the radio type correctly in
* arduino-lmic/project_config/lmic_project_config.h or from your BOARDS.txt.
*
*******************************************************************************/
#include <lmic.h>
#include <hal/hal.h>
#include <SPI.h>
//
// For normal use, we require that you edit the sketch to replace FILLMEIN
// with values assigned by the TTN console. However, for regression tests,
// we want to be able to compile these scripts. The regression tests define
// COMPILE_REGRESSION_TEST, and in that case we define FILLMEIN to a non-
// working but innocuous value.
//
#ifdef COMPILE_REGRESSION_TEST
# define FILLMEIN 0
#else
# warning "You must replace the values marked FILLMEIN with real values from the TTN control panel!"
# define FILLMEIN (#dont edit this, edit the lines that use FILLMEIN)
#endif
// This EUI must be in little-endian format, so least-significant-byte
// first. When copying an EUI from ttnctl output, this means to reverse
// the bytes. For TTN issued EUIs the last bytes should be 0xD5, 0xB3,
// 0x70.
static const u1_t PROGMEM APPEUI[8]= { REMOVED };
void os_getArtEui (u1_t* buf) { memcpy_P(buf, APPEUI, 8);}
// This should also be in little endian format, see above.
static const u1_t PROGMEM DEVEUI[8]= { REMOVED };
void os_getDevEui (u1_t* buf) { memcpy_P(buf, DEVEUI, 8);}
// This key should be in big endian format (or, since it is not really a
// number but a block of memory, endianness does not really apply). In
// practice, a key taken from the TTN console can be copied as-is.
static const u1_t PROGMEM APPKEY[16] = { REMOVED };
void os_getDevKey (u1_t* buf) { memcpy_P(buf, APPKEY, 16);}
static uint8_t mydata[] = "Hello, world!";
static osjob_t sendjob;
// Schedule TX every this many seconds (might become longer due to duty
// cycle limitations).
const unsigned TX_INTERVAL = 180;
// Pin mapping
//
// Adafruit BSPs are not consistent -- m0 express defs ARDUINO_SAMD_FEATHER_M0,
// m0 defs ADAFRUIT_FEATHER_M0
//
#if defined(ARDUINO_SAMD_FEATHER_M0) || defined(ADAFRUIT_FEATHER_M0)
// Pin mapping for Adafruit Feather M0 LoRa, etc.
// /!\ By default Adafruit Feather M0's pin 6 and DIO1 are not connected.
// Please ensure they are connected.
const lmic_pinmap lmic_pins = {
.nss = 8,
.rxtx = LMIC_UNUSED_PIN,
.rst = 4,
.dio = {3, 6, LMIC_UNUSED_PIN},
.rxtx_rx_active = 0,
.rssi_cal = 8, // LBT cal for the Adafruit Feather M0 LoRa, in dB
.spi_freq = 8000000,
};
#elif defined(ARDUINO_AVR_FEATHER32U4)
// Pin mapping for Adafruit Feather 32u4 LoRa, etc.
// Just like Feather M0 LoRa, but uses SPI at 1MHz; and that's only
// because MCCI doesn't have a test board; probably higher frequencies
// will work.
// /!\ By default Feather 32u4's pin 6 and DIO1 are not connected. Please
// ensure they are connected.
const lmic_pinmap lmic_pins = {
.nss = 8,
.rxtx = LMIC_UNUSED_PIN,
.rst = 4,
.dio = {7, 6, LMIC_UNUSED_PIN},
.rxtx_rx_active = 0,
.rssi_cal = 8, // LBT cal for the Adafruit Feather 32U4 LoRa, in dB
.spi_freq = 1000000,
};
#elif defined(ARDUINO_CATENA_4551)
// Pin mapping for Murata module / Catena 4551
const lmic_pinmap lmic_pins = {
.nss = 7,
.rxtx = 29,
.rst = 8,
.dio = { 25, // DIO0 (IRQ) is D25
26, // DIO1 is D26
27, // DIO2 is D27
},
.rxtx_rx_active = 1,
.rssi_cal = 10,
.spi_freq = 8000000 // 8MHz
};
#else
# error "Unknown target"
#endif
void printHex2(unsigned v) {
v &= 0xff;
if (v < 16)
Serial.print('0');
Serial.print(v, HEX);
}
void onEvent (ev_t ev) {
Serial.print(os_getTime());
Serial.print(": ");
switch(ev) {
case EV_SCAN_TIMEOUT:
Serial.println(F("EV_SCAN_TIMEOUT"));
break;
case EV_BEACON_FOUND:
Serial.println(F("EV_BEACON_FOUND"));
break;
case EV_BEACON_MISSED:
Serial.println(F("EV_BEACON_MISSED"));
break;
case EV_BEACON_TRACKED:
Serial.println(F("EV_BEACON_TRACKED"));
break;
case EV_JOINING:
Serial.println(F("EV_JOINING"));
break;
case EV_JOINED:
Serial.println(F("EV_JOINED"));
{
u4_t netid = 0;
devaddr_t devaddr = 0;
u1_t nwkKey[16];
u1_t artKey[16];
LMIC_getSessionKeys(&netid, &devaddr, nwkKey, artKey);
Serial.print("netid: ");
Serial.println(netid, DEC);
Serial.print("devaddr: ");
Serial.println(devaddr, HEX);
Serial.print("AppSKey: ");
for (size_t i=0; i<sizeof(artKey); ++i) {
if (i != 0)
Serial.print("-");
printHex2(artKey[i]);
}
Serial.println("");
Serial.print("NwkSKey: ");
for (size_t i=0; i<sizeof(nwkKey); ++i) {
if (i != 0)
Serial.print("-");
printHex2(nwkKey[i]);
}
Serial.println();
}
// Disable link check validation (automatically enabled
// during join, but because slow data rates change max TX
// size, we don't use it in this example.
LMIC_setLinkCheckMode(0);
break;
/*
|| This event is defined but not used in the code. No
|| point in wasting codespace on it.
||
|| case EV_RFU1:
|| Serial.println(F("EV_RFU1"));
|| break;
*/
case EV_JOIN_FAILED:
Serial.println(F("EV_JOIN_FAILED"));
break;
case EV_REJOIN_FAILED:
Serial.println(F("EV_REJOIN_FAILED"));
break;
break;
case EV_TXCOMPLETE:
Serial.println(F("EV_TXCOMPLETE (includes waiting for RX windows)"));
if (LMIC.txrxFlags & TXRX_ACK)
Serial.println(F("Received ack"));
if (LMIC.dataLen) {
Serial.println(F("Received "));
Serial.println(LMIC.dataLen);
Serial.println(F(" bytes of payload"));
}
// Schedule next transmission
os_setTimedCallback(&sendjob, os_getTime()+sec2osticks(TX_INTERVAL), do_send);
break;
case EV_LOST_TSYNC:
Serial.println(F("EV_LOST_TSYNC"));
break;
case EV_RESET:
Serial.println(F("EV_RESET"));
break;
case EV_RXCOMPLETE:
// data received in ping slot
Serial.println(F("EV_RXCOMPLETE"));
break;
case EV_LINK_DEAD:
Serial.println(F("EV_LINK_DEAD"));
break;
case EV_LINK_ALIVE:
Serial.println(F("EV_LINK_ALIVE"));
break;
/*
|| This event is defined but not used in the code. No
|| point in wasting codespace on it.
||
|| case EV_SCAN_FOUND:
|| Serial.println(F("EV_SCAN_FOUND"));
|| break;
*/
case EV_TXSTART:
Serial.println(F("EV_TXSTART"));
break;
case EV_TXCANCELED:
Serial.println(F("EV_TXCANCELED"));
break;
case EV_RXSTART:
/* do not print anything -- it wrecks timing */
break;
case EV_JOIN_TXCOMPLETE:
Serial.println(F("EV_JOIN_TXCOMPLETE: no JoinAccept"));
break;
default:
Serial.print(F("Unknown event: "));
Serial.println((unsigned) ev);
break;
}
}
void do_send(osjob_t* j){
// Check if there is not a current TX/RX job running
if (LMIC.opmode & OP_TXRXPEND) {
Serial.println(F("OP_TXRXPEND, not sending"));
} else {
// Prepare upstream data transmission at the next possible time.
LMIC_setTxData2(1, mydata, sizeof(mydata)-1, 0);
Serial.println(F("Packet queued"));
}
// Next TX is scheduled after TX_COMPLETE event.
}
void setup() {
delay(5000);
while (! Serial)
;
Serial.begin(9600);
Serial.println(F("Starting"));
#ifdef VCC_ENABLE
// For Pinoccio Scout boards
pinMode(VCC_ENABLE, OUTPUT);
digitalWrite(VCC_ENABLE, HIGH);
delay(1000);
#endif
// LMIC init
os_init();
// Reset the MAC state. Session and pending data transfers will be discarded.
LMIC_reset();
LMIC_setLinkCheckMode(0);
LMIC_setDrTxpow(DR_SF7,14);
LMIC_selectSubBand(1);
// Start job (sending automatically starts OTAA too)
do_send(&sendjob);
}
void loop() {
os_runloop_once();
}
