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CubeCellRepeater
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CubeCellRepeater/experimental/main.cpp

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8.7 KiB
C++
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#include <Arduino.h>
#include "config.h"
// CONFIGURATION: change values in config.h !
#define VERBOSE // define to SILENT to turn off serial messages
#define BLINK // define to NOBLINK to turn off LED signaling
#define OLED // define to OLED to display messages on the OLED
// OLED only supported for DevBoard Plus (HTCC-AB02)
MeshPacket thePacket;
ChannelSettings ChanSet;
static RadioEvents_t RadioEvents;
uint32_t lastreceivedID = 0x00000000;
#ifndef NOBLINK
#include "CubeCell_NeoPixel.h"
CubeCell_NeoPixel LED(1, RGB, NEO_GRB + NEO_KHZ800);
#endif
#ifndef NO_OLED
#include "cubecell_SH1107Wire.h"
SH1107Wire display(0x3c, 500000, I2C_NUM_0,GEOMETRY_128_64,GPIO10 );
char str[64];
#endif
void setup() {
#ifndef NO_OLED
pinMode(Vext,OUTPUT);
digitalWrite(Vext,LOW);
#endif
#ifndef NOBLINK
pinMode(Vext,OUTPUT);
digitalWrite(Vext,LOW); //SET POWER
delay(100);
LED.begin(); // INITIALIZE NeoPixel strip object (REQUIRED)
LED.clear( );
LED.show();
#endif
#ifndef NO_OLED
display.init();
display.clear();
display.display();
display.setTextAlignment(TEXT_ALIGN_LEFT);
display.setFont(ArialMT_Plain_16);
display.drawString(0,0,"CC Repeater");
display.display();
#endif
#ifndef SILENT
Serial.begin(115200);
MSG("\nSetting up Radio:\n");
#endif
RadioEvents.TxDone = TxDone;
RadioEvents.TxTimeout = TxTimeout;
RadioEvents.RxDone = RxDone;
Radio.Init( &RadioEvents );
Radio.Sleep();
memcpy(ChanSet.name, MESHTASTIC_NAME, 12);
//myRegion = &regions[REGION];
ChanSet.channel_num = hash( MESHTASTIC_NAME ) % regions[REGION].numChannels; // see config.h
ChanSet.tx_power = (regions[REGION].powerLimit == 0) ? TX_MAX_POWER : MIN(regions[REGION].powerLimit, TX_MAX_POWER) ;
ChanSet.psk = MESHTASTIC_PSK;
/* FYI:
"bandwidth":
[0: 125 kHz, 1: 250 kHz, 2: 500 kHz, 3: 62.5kHz, 4: 41.67kHz, 5: 31.25kHz, 6: 20.83kHz, 7: 15.63kHz, 8: 10.42kHz, 9: 7.81kHz]
"speed":
0: ChannelSettings_ModemConfig_Bw125Cr45Sf128 aka short range
1: ChannelSettings_ModemConfig_Bw500Cr45Sf128 aka medium range
2: ChannelSettings_ModemConfig_Bw31_25Cr48Sf512 aka long range
3: ChannelSettings_ModemConfig_Bw125Cr48Sf4096 aka very long range
"coding rate":
[1: 4/5, 2: 4/6, 3: 4/7, 4: 4/8]
*/
switch ( MESHTASTIC_SPEED ){
case 0: { // short range
ChanSet.bandwidth = 0; // 125 kHz
ChanSet.coding_rate = 1; // = 4/5
ChanSet.spread_factor = 7;
break;
}
case 1: { // medium range
ChanSet.bandwidth = 2; // 500 kHz
ChanSet.coding_rate = 1; // = 4/5
ChanSet.spread_factor = 7;
break;
}
case 2: { // long range
ChanSet.bandwidth = 5; // 31.25 kHz
ChanSet.coding_rate = 4; // = 4/8
ChanSet.spread_factor = 9;
break;
}
case 3: { // very long range
ChanSet.bandwidth = 0; // 125 kHz
ChanSet.coding_rate = 4; // = 4/8
ChanSet.spread_factor = 12;
break;
}
default:{ // default setting is medium range
ChanSet.bandwidth = 2; // 500 kHz
ChanSet.coding_rate = 1; // = 4/5
ChanSet.spread_factor = 7;
}
}
ConfigureRadio( ChanSet );
#ifndef SILENT
MSG("..done! Switch to Receive Mode.\n");
#endif
#ifndef NO_OLED
display.drawString(0,32, "Receive Mode..");
display.display();
#endif
Radio.Rx(0); // initial mode = receive
}
void loop( )
{
lowPowerHandler( );
delay(500);
Radio.IrqProcess( );
}
void TxDone( void )
{
Radio.Sleep( );
#ifndef NOBLINK
LED.clear( );
LED.show( );
#endif
#ifndef SILENT
MSG(".done! Switch to Receive Mode.\n");
#endif
#ifndef NO_OLED
sprintf(str,"..done. RX Mode..");
display.drawString(42,53,str);
display.display();
#endif
Radio.Rx( 0 ); // switch to receive mode
}
void TxTimeout( void )
{
Radio.Sleep( );
#ifndef NOBLINK
LED.clear( );
LED.show( );
#endif
#ifndef SILENT
MSG(".failed (TX Timeout)! Switch to Receive Mode.\n");
#endif
#ifndef NO_OLED
sprintf(str,"..timeout!");
display.drawString(42,53,str);
display.display();
#endif
Radio.Rx( 0 ); // switch to receive mode
}
void RxDone( uint8_t *payload, uint16_t size, int16_t rssi, int8_t snr )
{
Radio.Sleep( );
if ( size > MAX_PAYLOAD_LENGTH ) size = MAX_PAYLOAD_LENGTH;
if ( !(size > sizeof(PacketHeader)) ) {
#ifndef SILENT
MSG("\nReceived packet! (Size %i bytes, RSSI %i, SNR %i)\n", size, rssi, snr);
MSG("Packet to small (No MeshPacket), discard. Switch to Receive Mode.\n");
#endif
Radio.Rx( 0 );
return;
}
PacketHeader * h = (PacketHeader *)payload;
MeshPacket * p = &thePacket;
p->to = h->to;
p->from = h->from;
p->id = h->id;
p->hop_limit = h->flags && 0b00000111;
p->want_ack = h->flags && 0b00001000;
p->which_payload = MeshPacket_encrypted_tag;
p->encrypted.size= size - sizeof(PacketHeader);
p->decoded.data.payload.size = p->encrypted.size;
memcpy(p->encrypted.bytes, payload + sizeof(PacketHeader), p->encrypted.size);
#ifndef SILENT
MSG("\nReceived packet! (Size %i bytes, RSSI %i, SNR %i)\n", size, rssi, snr);
MSG("TO: "); HEXMSG(thePacket.to);
MSG(" FROM: "); HEXMSG(thePacket.from);
MSG(" Packet ID: "); HEXMSG(thePacket.id);
MSG(" Flags: WANT_ACK="); MSG((thePacket.want_ack) ? "YES " : "NO ");
MSG(" HOP_LIMIT=%i\n", thePacket.hop_limit);
MSG("Payload:");
for (int i=0; i<p->encrypted.size; i++){
MSG(" ");
HEXMSG(p->encrypted.bytes[i]);
}
MSG("\n");
#endif
#ifndef NO_OLED
display.clear();
display.display();
display.setFont(ArialMT_Plain_10);
sprintf(str,"Size: %i RSSI %i SNR %i", size, rssi, snr);
display.drawString(0,0,str);
sprintf(str,"%X", thePacket.to);
display.drawString(0,11,"TO:");
display.drawString(40,11,str);
sprintf(str,"%X", thePacket.from);
display.drawString(0,22,"FROM:");
display.drawString(40,22,str);
sprintf(str,"%X", thePacket.id);
display.drawString(0,32,"ID:");
display.drawString(40,32,str);
display.display();
#endif
if ( !(lastreceivedID == thePacket.id) ){
// will repeat package
#ifndef SILENT
MSG("Sending packet.. (Size: %i)..", size);
#endif
#ifndef NO_OLED
sprintf(str,"Sending..");
display.drawString(0,53,str);
display.display();
#endif
lastreceivedID = thePacket.id;
#ifndef NOBLINK
LED.setPixelColor( 0, RGB_RED ); // send mode
LED.show();
#endif
Radio.Send( payload, size );
}
else{
#ifndef SILENT
MSG("PacketID = last PacketID, will not repeat again.\n");
#endif
#ifndef NO_OLED
sprintf(str,"ID known!");
display.drawString(0,53,str);
display.display();
#endif
Radio.Rx( 0 ); // switch to Receive Mode
}
}
// hash a string into an integer - djb2 by Dan Bernstein. -
// http://www.cse.yorku.ca/~oz/hash.html
unsigned long hash(char *str)
{
unsigned long hash = 5381;
int c;
while ((c = *str++) != 0)
hash = ((hash << 5) + hash) + (unsigned char) c; // hash * 33 + c //
return hash;
}
void ConfigureRadio( ChannelSettings ChanSet )
{
//uint32_t freq = (myRegion->freq + myRegion->spacing * ChanSet.channel_num)*1E6;
uint32_t freq = (regions[REGION].freq + regions[REGION].spacing * ChanSet.channel_num)*1E6;
#ifndef SILENT
MSG("\nRegion is: %s", regions[REGION].name);
MSG(" TX power: %i\n", ChanSet.tx_power);
MSG("Setting frequency to %i Hz (meshtastic channel %i) .. \n",freq,ChanSet.channel_num );
MSG("Channel name is: %s .. \n", ChanSet.name );
MSG("Setting bandwidth to index %i ..\n",ChanSet.bandwidth);
MSG("Setting CodeRate to index %i .. \n", ChanSet.coding_rate);
MSG("Setting SpreadingFactor to %i ..\n",ChanSet.spread_factor);
#endif
Radio.SetChannel( freq );
Radio.SetTxConfig( MODEM_LORA, ChanSet.tx_power ,0 , ChanSet.bandwidth, ChanSet.spread_factor, ChanSet.coding_rate,
LORA_PREAMBLE_LENGTH, false, true, false, 0, false, 20000 );
Radio.SetRxConfig( MODEM_LORA, ChanSet.bandwidth, ChanSet.spread_factor, ChanSet.coding_rate, 0, LORA_PREAMBLE_LENGTH,
LORA_SYMBOL_TIMEOUT, false , 0, true, false, 0, false, true );
}
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