276 lines
8.1 KiB
C++
276 lines
8.1 KiB
C++
// Basic Config
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#include "globals.h"
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// LMIC-Arduino LoRaWAN Stack
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#include "loraconf.h"
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#include <hal/hal.h>
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#include <lmic.h>
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#ifdef MCP_24AA02E64_I2C_ADDRESS
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#include <Wire.h> // Needed for 24AA02E64, does not hurt anything if included and not used
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#endif
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// Local logging Tag
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static const char TAG[] = "lora";
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// functions defined in rcommand.cpp
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void rcommand(uint8_t cmd, uint8_t arg);
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void switch_lora(uint8_t sf, uint8_t tx);
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// DevEUI generator using devices's MAC address
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void gen_lora_deveui(uint8_t *pdeveui) {
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uint8_t *p = pdeveui, dmac[6];
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int i = 0;
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esp_efuse_mac_get_default(dmac);
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// deveui is LSB, we reverse it so TTN DEVEUI display
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// will remain the same as MAC address
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// MAC is 6 bytes, devEUI 8, set first 2 ones
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// with an arbitrary value
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*p++ = 0xFF;
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*p++ = 0xFE;
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// Then next 6 bytes are mac address reversed
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for (i = 0; i < 6; i++) {
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*p++ = dmac[5 - i];
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}
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}
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// Function to do a byte swap in a byte array
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void RevBytes(unsigned char *b, size_t c) {
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u1_t i;
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for (i = 0; i < c / 2; i++) {
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unsigned char t = b[i];
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b[i] = b[c - 1 - i];
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b[c - 1 - i] = t;
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}
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}
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void get_hard_deveui(uint8_t *pdeveui) {
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// read DEVEUI from Microchip 24AA02E64 2Kb serial eeprom if present
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#ifdef MCP_24AA02E64_I2C_ADDRESS
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uint8_t i2c_ret;
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// Init this just in case, no more to 100KHz
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Wire.begin(OLED_SDA, OLED_SCL, 100000);
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Wire.beginTransmission(MCP_24AA02E64_I2C_ADDRESS);
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Wire.write(MCP_24AA02E64_MAC_ADDRESS);
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i2c_ret = Wire.endTransmission();
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// check if device seen on i2c bus
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if (i2c_ret == 0) {
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char deveui[32] = "";
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uint8_t data;
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Wire.beginTransmission(MCP_24AA02E64_I2C_ADDRESS);
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Wire.write(MCP_24AA02E64_MAC_ADDRESS);
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Wire.requestFrom(MCP_24AA02E64_I2C_ADDRESS, 8);
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while (Wire.available()) {
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data = Wire.read();
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sprintf(deveui + strlen(deveui), "%02X ", data);
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*pdeveui++ = data;
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}
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i2c_ret = Wire.endTransmission();
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ESP_LOGI(TAG, "Serial EEPROM 24AA02E64 found, read DEVEUI %s", deveui);
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} else {
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ESP_LOGI(TAG, "Serial EEPROM 24AA02E64 not found ret=%d", i2c_ret);
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}
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// Set back to 400KHz to speed up OLED
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Wire.setClock(400000);
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#endif // MCP 24AA02E64
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}
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#ifdef VERBOSE
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// Display a key
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void printKey(const char *name, const uint8_t *key, uint8_t len, bool lsb) {
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const uint8_t *p;
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char keystring[len + 1] = "", keybyte[3];
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for (uint8_t i = 0; i < len; i++) {
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p = lsb ? key + len - i - 1 : key + i;
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sprintf(keybyte, "%02X", *p);
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strncat(keystring, keybyte, 2);
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}
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ESP_LOGI(TAG, "%s: %s", name, keystring);
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}
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// Display OTAA keys
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void printKeys(void) {
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// LMIC may not have used callback to fill
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// all EUI buffer so we do it here to a temp
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// buffer to be able to display them
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uint8_t buf[32];
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os_getDevEui((u1_t *)buf);
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printKey("DevEUI", buf, 8, true);
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os_getArtEui((u1_t *)buf);
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printKey("AppEUI", buf, 8, true);
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os_getDevKey((u1_t *)buf);
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printKey("AppKey", buf, 16, false);
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}
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#endif // VERBOSE
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void do_send(osjob_t *j) {
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// Check if there is a pending TX/RX job running
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if (LMIC.opmode & OP_TXRXPEND) {
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ESP_LOGI(TAG, "LoRa busy, rescheduling");
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sprintf(display_lmic, "LORA BUSY");
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goto end;
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}
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// prepare payload with sum of unique WIFI MACs seen
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static uint8_t mydata[4];
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mydata[0] = (macs_wifi & 0xff00) >> 8;
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mydata[1] = macs_wifi & 0xff;
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if (cfg.blescan) {
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// append sum of unique BLE MACs seen to payload
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mydata[2] = (macs_ble & 0xff00) >> 8;
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mydata[3] = macs_ble & 0xff;
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} else {
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mydata[2] = 0;
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mydata[3] = 0;
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}
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#ifdef HAS_GPS
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static uint8_t gpsdata[18];
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if (cfg.gpsmode && gps.location.isValid()) {
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gps_read();
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memcpy(gpsdata, mydata, 4);
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memcpy(gpsdata + 4, &gps_status, sizeof(gps_status));
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ESP_LOGI(TAG, "lat=%.6f / lon=%.6f | %u Sats | HDOP=%.1f | Altitude=%u m",
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gps_status.latitude / (float)1000000,
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gps_status.longitude / (float)1000000, gps_status.satellites,
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gps_status.hdop / (float)100, gps_status.altitude);
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LMIC_setTxData2(COUNTERPORT, gpsdata, sizeof(gpsdata),
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(cfg.countermode & 0x02));
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ESP_LOGI(TAG, "%d bytes queued to send", sizeof(gpsdata));
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} else {
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#endif
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LMIC_setTxData2(COUNTERPORT, mydata, sizeof(mydata),
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(cfg.countermode & 0x02));
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ESP_LOGI(TAG, "%d bytes queued to send", sizeof(mydata));
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sprintf(display_lmic, "PACKET QUEUED");
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#ifdef HAS_GPS
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}
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#endif
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// clear counter if not in cumulative counter mode
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if (cfg.countermode != 1) {
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reset_counters(); // clear macs container and reset all counters
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reset_salt(); // get new salt for salting hashes
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ESP_LOGI(TAG, "Counter cleared (countermode = %d)", cfg.countermode);
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}
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// Schedule next transmission
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end:
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os_setTimedCallback(&sendjob, os_getTime() + sec2osticks(cfg.sendcycle * 2),
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do_send);
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} // do_send()
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void onEvent(ev_t ev) {
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char buff[24] = "";
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switch (ev) {
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case EV_SCAN_TIMEOUT:
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strcpy_P(buff, PSTR("SCAN TIMEOUT"));
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break;
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case EV_BEACON_FOUND:
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strcpy_P(buff, PSTR("BEACON FOUND"));
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break;
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case EV_BEACON_MISSED:
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strcpy_P(buff, PSTR("BEACON MISSED"));
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break;
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case EV_BEACON_TRACKED:
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strcpy_P(buff, PSTR("BEACON TRACKED"));
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break;
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case EV_JOINING:
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strcpy_P(buff, PSTR("JOINING"));
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break;
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case EV_LOST_TSYNC:
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strcpy_P(buff, PSTR("LOST TSYNC"));
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break;
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case EV_RESET:
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strcpy_P(buff, PSTR("RESET"));
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break;
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case EV_RXCOMPLETE:
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strcpy_P(buff, PSTR("RX COMPLETE"));
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break;
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case EV_LINK_DEAD:
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strcpy_P(buff, PSTR("LINK DEAD"));
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break;
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case EV_LINK_ALIVE:
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strcpy_P(buff, PSTR("LINK ALIVE"));
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break;
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case EV_RFU1:
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strcpy_P(buff, PSTR("RFUI"));
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break;
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case EV_JOIN_FAILED:
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strcpy_P(buff, PSTR("JOIN FAILED"));
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break;
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case EV_REJOIN_FAILED:
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strcpy_P(buff, PSTR("REJOIN FAILED"));
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break;
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case EV_JOINED:
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strcpy_P(buff, PSTR("JOINED"));
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sprintf(display_lora,
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" "); // clear previous lmic status message from display
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// set data rate adaptation
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LMIC_setAdrMode(cfg.adrmode);
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// Set data rate and transmit power (note: txpower seems to be ignored by
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// the library)
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switch_lora(cfg.lorasf, cfg.txpower);
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// show effective LoRa parameters after join
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ESP_LOGI(TAG, "ADR=%d, SF=%d, TXPOWER=%d", cfg.adrmode, cfg.lorasf,
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cfg.txpower);
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break;
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case EV_TXCOMPLETE:
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strcpy_P(buff, (LMIC.txrxFlags & TXRX_ACK) ? PSTR("RECEIVED ACK")
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: PSTR("TX COMPLETE"));
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sprintf(display_lora,
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" "); // clear previous lmic status message from display
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if (LMIC.dataLen) {
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ESP_LOGI(TAG, "Received %d bytes of payload, RSSI %d SNR %d",
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LMIC.dataLen, LMIC.rssi, (signed char)LMIC.snr / 4);
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// LMIC.snr = SNR twos compliment [dB] * 4
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// LMIC.rssi = RSSI [dBm] (-196...+63)
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sprintf(display_lora, "RSSI %d SNR %d", LMIC.rssi,
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(signed char)LMIC.snr / 4);
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// check if payload received on command port, then call remote command
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// interpreter
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if ((LMIC.txrxFlags & TXRX_PORT) &&
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(LMIC.frame[LMIC.dataBeg - 1] == RCMDPORT)) {
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// caution: buffering LMIC values here because rcommand() can modify
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// LMIC.frame
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unsigned char *buffer = new unsigned char[MAX_LEN_FRAME];
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memcpy(buffer, LMIC.frame, MAX_LEN_FRAME); // Copy data from cfg to
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// char*
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int i, k = LMIC.dataBeg, l = LMIC.dataBeg + LMIC.dataLen - 2;
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for (i = k; i <= l; i += 2) {
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rcommand(buffer[i], buffer[i + 1]);
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}
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delete[] buffer; // free memory
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}
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}
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break;
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default:
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sprintf_P(buff, PSTR("UNKNOWN EVENT %d"), ev);
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break;
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}
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// Log & Display if asked
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if (*buff) {
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ESP_LOGI(TAG, "EV_%s", buff);
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sprintf(display_lmic, buff);
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}
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} // onEvent()
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