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/*
* Copyright 2021 Daniel Friesel
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "arch.h"
#include "driver/gpio.h"
#include "driver/stdout.h"
#include "driver/uptime.h"
#include "driver/adc.h"
/*
* Work in progress! Joining is sometimes successful, but that's about it.
* TX with user-defined payloads after joining doesn't appear to work yet.
*/
#define CFG_eu868 1
#define CFG_sx1276_radio 1
#define DISABLE_LMIC_FAILURE_TO
#include <lmic.h>
#include <hal/hal.h>
static const u1_t PROGMEM APPEUI[8]={ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
void os_getArtEui (u1_t* buf) { memcpy_P(buf, APPEUI, 8);}
static const u1_t PROGMEM DEVEUI[8]={ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
void os_getDevEui (u1_t* buf) { memcpy_P(buf, DEVEUI, 8);}
static const u1_t PROGMEM APPKEY[16] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
void os_getDevKey (u1_t* buf) { memcpy_P(buf, APPKEY, 16);}
// Schedule TX every this many seconds (might become longer due to duty
// cycle limitations).
const unsigned TX_INTERVAL = 10;
bool joined = false;
// DIYMall BSFrance LoRa32u4 II v1.3
// See also: arduino packages/adafruit/hardware/avr/1.4.13/variants/feather32u4/pins_arduino.h
// PB0 -> Charger enable and Vbat/2 measurement voltage divider enable
// PB0 is also the !SS pin, so it must be configured as output in order to use SPI.
// PB5 "D9" <- Vbat/2 via voltage divider. Appears to also have a connection to the user LED
// PC7 "D13" -> User LED
const lmic_pinmap lmic_pins = {
.nss = GPIO::pb4,
.rxtx = LMIC_UNUSED_PIN,
.rst = GPIO::pd4,
.dio = {GPIO::pe6, GPIO::pc6, LMIC_UNUSED_PIN},
};
static osjob_t sendjob;
void do_send(osjob_t* j){
uint16_t bat = adc.getVBat_mV(false);
// Check if there is not a current TX/RX job running
if (LMIC.opmode & OP_TXRXPEND) {
kout.pprint(PSTR("OP_TXRXPEND\n"));
} else {
// Prepare upstream data transmission at the next possible time.
LMIC_setTxData2(1, (uint8_t *)&bat, sizeof(bat), 0);
kout.pprint(PSTR("Packet queued\n"));
}
// Next TX is scheduled after TX_COMPLETE event.
}
void do_sleep(){
kout.pprint(PSTR("naptime\n"));
for(int i=0; i<75; i++){
arch.idle();
}
}
void onEvent (ev_t ev) {
switch(ev) {
case EV_SCAN_TIMEOUT:
kout.pprint(PSTR("EV_SCAN_TIMEOUT\n"));
break;
case EV_JOINING:
kout.pprint(PSTR("EV_JOINING\n"));
break;
case EV_JOINED:
kout.pprint(PSTR("EV_JOINED\n"));
#if 1
{
u4_t netid = 0;
devaddr_t devaddr = 0;
u1_t nwkKey[16];
u1_t artKey[16];
LMIC_getSessionKeys(&netid, &devaddr, nwkKey, artKey);
kout.pprint(PSTR("netid: "));
kout << dec << netid << endl;
kout.pprint(PSTR("devaddr: "));
kout << hex << devaddr << endl;
//Serial.print(PSTR("AppSKey: "));
for (size_t i=0; i<sizeof(artKey); ++i) {
if (i != 0) {
//Serial.print(PSTR("-"));
}
//printHex2(artKey[i]);
}
kout.pprint(PSTR(""));
//Serial.print(PSTR("NwkSKey: "));
for (size_t i=0; i<sizeof(nwkKey); ++i) {
if (i != 0) {
//Serial.print("-");
}
//printHex2(nwkKey[i]);
}
kout << endl;
}
#endif
joined = true;
break;
case EV_JOIN_FAILED:
kout.pprint(PSTR("EV_JOIN_FAILED\n"));
break;
case EV_TXCOMPLETE:
kout.pprint(PSTR("EV_TXCOMPLETE (includes waiting for RX windows)\n"));
// Schedule next transmission
if (joined) {
do_sleep();
do_send(&sendjob);
} else {
os_setTimedCallback(&sendjob, os_getTime()+sec2osticks(TX_INTERVAL), do_send);
}
break;
case EV_RESET:
kout.pprint(PSTR("EV_RESET\n"));
break;
case EV_RXCOMPLETE:
// data received in ping slot
kout.pprint(PSTR("EV_RXCOMPLETE\n"));
break;
case EV_LINK_DEAD:
kout.pprint(PSTR("EV_LINK_DEAD\n"));
break;
case EV_LINK_ALIVE:
kout.pprint(PSTR("EV_LINK_ALIVE\n"));
break;
case EV_TXSTART:
kout.pprint(PSTR("EV_TXSTART\n"));
break;
case EV_TXCANCELED:
kout.pprint(PSTR("EV_TXCANCELED\n"));
break;
case EV_RXSTART:
/* do not print anything -- it wrecks timing */
break;
case EV_JOIN_TXCOMPLETE:
kout.pprint(PSTR("EV_JOIN_TXCOMPLETE: no JoinAccept\n"));
break;
default:
kout.pprint(PSTR("Unknown event: "));
kout << (unsigned) ev;
break;
}
}
void loop(void)
{
os_runloop_once();
gpio.led_toggle();
}
int main(void)
{
arch.setup();
gpio.setup();
kout.setup();
gpio.input(GPIO::pb5);
gpio.led_on();
kout.pprint(PSTR("Hello, World!\n"));
kout.pprint(PSTR("Test, World!\n"));
os_init();
LMIC_reset();
LMIC_setClockError(MAX_CLOCK_ERROR * 20 / 100);
LMIC_setAdrMode(0);
do_send(&sendjob);
while (1) {
os_runloop_once();
gpio.led_toggle();
}
arch.idle_loop();
return 0;
}
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