acid-drop

- Hacking the planet from a LilyGo T-Deck using custom firmware
git clone git://git.acid.vegas/acid-drop.git
SSTV_Transmit_AFSK.ino (6544B)
      1 /*
      2    RadioLib SSTV Transmit AFSK Example
      3 
      4    The following example sends SSTV picture using
      5    SX1278's FSK modem. The data is modulated
      6    as AFSK.
      7 
      8    Other modules that can be used for SSTV:
      9    with AFSK modulation:
     10     - SX127x/RFM9x
     11     - RF69
     12     - SX1231
     13     - CC1101
     14     - Si443x/RFM2x
     15 
     16    NOTE: Some platforms (such as Arduino Uno)
     17          might not be fast enough to correctly
     18          send pictures via high-speed modes
     19          like Scottie2 or Martin2. For those,
     20          lower speed modes such as Wrasse,
     21          Scottie1 or Martin1 are recommended.
     22 
     23    For default module settings, see the wiki page
     24    https://github.com/jgromes/RadioLib/wiki/Default-configuration
     25 
     26    For full API reference, see the GitHub Pages
     27    https://jgromes.github.io/RadioLib/
     28 */
     29 
     30 // include the library
     31 #include <RadioLib.h>
     32 
     33 // SX1278 has the following connections:
     34 // NSS pin:   10
     35 // DIO0 pin:  2
     36 // RESET pin: 9
     37 // DIO1 pin:  3
     38 SX1278 radio = new Module(10, 2, 9, 3);
     39 
     40 // or using RadioShield
     41 // https://github.com/jgromes/RadioShield
     42 //SX1278 radio = RadioShield.ModuleA;
     43 
     44 // create AFSK client instance using the FSK module
     45 // pin 5 is connected to SX1278 DIO2
     46 AFSKClient audio(&radio, 5);
     47 
     48 // create SSTV client instance using the AFSK instance
     49 SSTVClient sstv(&audio);
     50 
     51 // test "image" - actually just a single 320px line
     52 // will be sent over and over again, to create vertical color stripes at the receiver
     53 uint32_t line[320] = {
     54   // black
     55   0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000,
     56   0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000,
     57 
     58   // blue
     59   0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF,
     60   0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF, 0x0000FF,
     61 
     62   // green
     63   0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00,
     64   0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00, 0x00FF00,
     65 
     66   // cyan
     67   0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF,
     68   0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF, 0x00FFFF,
     69 
     70   // red
     71   0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000,
     72   0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000, 0xFF0000,
     73 
     74   // magenta
     75   0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF,
     76   0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF, 0xFF00FF,
     77 
     78   // yellow
     79   0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00,
     80   0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00, 0xFFFF00,
     81 
     82   // white
     83   0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF,
     84   0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF, 0xFFFFFF
     85 };
     86 
     87 void setup() {
     88   Serial.begin(9600);
     89 
     90   // initialize SX1278 with default settings
     91   Serial.print(F("[SX1278] Initializing ... "));
     92   int state = radio.beginFSK();
     93   if (state == RADIOLIB_ERR_NONE) {
     94     Serial.println(F("success!"));
     95   } else {
     96     Serial.print(F("failed, code "));
     97     Serial.println(state);
     98     while (true);
     99   }
    100 
    101   // when using one of the non-LoRa modules for SSTV
    102   // (RF69, SX1231 etc.), use the basic begin() method
    103   // int state = radio.begin();
    104 
    105   // initialize SSTV client
    106   Serial.print(F("[SSTV] Initializing ... "));
    107   // SSTV mode:                   Wrasse (SC2-180)
    108   // correction factor:           0.95
    109   // NOTE: Due to different speeds of various platforms
    110   //       supported by RadioLib (Arduino Uno, ESP32 etc),
    111   //       and because SSTV is analog protocol, incorrect
    112   //       timing of pulses can lead to distortions.
    113   //       To compensate, correction factor can be used
    114   //       to adjust the length of timing pulses
    115   //       (lower number = shorter pulses).
    116   //       The value is usually around 0.95 (95%).
    117   state = sstv.begin(Wrasse, 0.95);
    118   if(state == RADIOLIB_ERR_NONE) {
    119     Serial.println(F("success!"));
    120   } else {
    121     Serial.print(F("failed, code "));
    122     Serial.println(state);
    123     while(true);
    124   }
    125 
    126   // to help tune the receiver, SSTVClient can send
    127   // continuous 1900 Hz beep
    128   /*
    129     sstv.idle();
    130     while(true);
    131   */
    132 }
    133 
    134 void loop() {
    135   // send picture with 8 color stripes
    136   Serial.print(F("[SSTV] Sending test picture ... "));
    137 
    138   // send synchronization header first
    139   sstv.sendHeader();
    140 
    141   // send all picture lines
    142   for(uint16_t i = 0; i < sstv.getPictureHeight(); i++) {
    143     sstv.sendLine(line);
    144   }
    145 
    146   // turn off transmitter
    147   radio.standby();
    148 
    149   Serial.println(F("done!"));
    150 
    151   delay(30000);
    152 }