acid-drop

- Hacking the planet from a LilyGo T-Deck using custom firmware
git clone git://git.acid.vegas/acid-drop.git
SX1231.cpp (2820B)
      1 #include "SX1231.h"
      2 #if !defined(RADIOLIB_EXCLUDE_SX1231)
      3 
      4 SX1231::SX1231(Module* mod) : RF69(mod) {
      5 
      6 }
      7 
      8 int16_t SX1231::begin(float freq, float br, float freqDev, float rxBw, int8_t power, uint8_t preambleLen) {
      9   // set module properties
     10   _mod->init();
     11   _mod->pinMode(_mod->getIrq(), INPUT);
     12   _mod->pinMode(_mod->getRst(), OUTPUT);
     13 
     14   // try to find the SX1231 chip
     15   uint8_t i = 0;
     16   bool flagFound = false;
     17   while((i < 10) && !flagFound) {
     18     int16_t version = getChipVersion();
     19     if((version == 0x21) || (version == 0x22) || (version == 0x23)) {
     20       flagFound = true;
     21       _chipRevision = version;
     22     } else {
     23       #if defined(RADIOLIB_DEBUG)
     24         RADIOLIB_DEBUG_PRINT(F("SX1231 not found! ("));
     25         RADIOLIB_DEBUG_PRINT(i + 1);
     26         RADIOLIB_DEBUG_PRINT(F(" of 10 tries) RF69_REG_VERSION == "));
     27 
     28         char buffHex[12];
     29         sprintf(buffHex, "0x%04X", version);
     30         RADIOLIB_DEBUG_PRINT(buffHex);
     31         RADIOLIB_DEBUG_PRINT(F(", expected 0x0021 / 0x0022 / 0x0023"));
     32         RADIOLIB_DEBUG_PRINTLN();
     33       #endif
     34       _mod->delay(10);
     35       i++;
     36     }
     37   }
     38 
     39   if(!flagFound) {
     40     RADIOLIB_DEBUG_PRINTLN(F("No SX1231 found!"));
     41     _mod->term();
     42     return(RADIOLIB_ERR_CHIP_NOT_FOUND);
     43   }
     44   RADIOLIB_DEBUG_PRINTLN(F("M\tSX1231"));
     45 
     46   // configure settings not accessible by API
     47   int16_t state = config();
     48   RADIOLIB_ASSERT(state);
     49   RADIOLIB_DEBUG_PRINTLN(F("M\tRF69"));
     50 
     51   // configure publicly accessible settings
     52   state = setFrequency(freq);
     53   RADIOLIB_ASSERT(state);
     54 
     55   // configure bitrate
     56   _rxBw = 125.0;
     57   state = setBitRate(br);
     58   RADIOLIB_ASSERT(state);
     59 
     60   // configure default RX bandwidth
     61   state = setRxBandwidth(rxBw);
     62   RADIOLIB_ASSERT(state);
     63 
     64   // configure default frequency deviation
     65   state = setFrequencyDeviation(freqDev);
     66   RADIOLIB_ASSERT(state);
     67 
     68   // configure default TX output power
     69   state = setOutputPower(power);
     70   RADIOLIB_ASSERT(state);
     71 
     72   // configure default preamble length
     73   state = setPreambleLength(preambleLen);
     74   RADIOLIB_ASSERT(state);
     75 
     76   // default sync word values 0x2D01 is the same as the default in LowPowerLab RFM69 library
     77   uint8_t syncWord[] = {0x2D, 0x01};
     78   state = setSyncWord(syncWord, 2);
     79   RADIOLIB_ASSERT(state);
     80 
     81   // set default packet length mode
     82   state = variablePacketLengthMode();
     83   if (state != RADIOLIB_ERR_NONE) {
     84     return(state);
     85   }
     86 
     87   // SX1231 V2a only
     88   if(_chipRevision == RADIOLIB_SX1231_CHIP_REVISION_2_A) {
     89     // modify default OOK threshold value
     90     state = _mod->SPIsetRegValue(RADIOLIB_SX1231_REG_TEST_OOK, RADIOLIB_SX1231_OOK_DELTA_THRESHOLD);
     91     RADIOLIB_ASSERT(state);
     92 
     93     // enable OCP with 95 mA limit
     94     state = _mod->SPIsetRegValue(RADIOLIB_RF69_REG_OCP, RADIOLIB_RF69_OCP_ON | RADIOLIB_RF69_OCP_TRIM, 4, 0);
     95     RADIOLIB_ASSERT(state);
     96   }
     97 
     98   return(RADIOLIB_ERR_NONE);
     99 }
    100 
    101 #endif