[RF69] Added RTTY support

src/modules/RF69.cpp

@@ -216,6 +216,56 @@ int16_t RF69::standby() {
   return(setMode(RF69_STANDBY));
 }
 
+int16_t RF69::transmitDirect(uint32_t FRF) {
+  // user requested to start transmitting immediately (required for RTTY)
+  if(FRF != 0) {
+    _mod->SPIwriteRegister(RF69_REG_FRF_MSB, (FRF & 0xFF0000) >> 16);
+    _mod->SPIwriteRegister(RF69_REG_FRF_MID, (FRF & 0x00FF00) >> 8);
+    _mod->SPIwriteRegister(RF69_REG_FRF_LSB, FRF & 0x0000FF);
+  
+    return(setMode(RF69_TX));
+  }
+  
+  // activate direct mode
+  int16_t state = directMode();
+  if(state != ERR_NONE) {
+    return(state);
+  }
+  
+  // start transmitting
+  return(setMode(RF69_TX));
+}
+
+int16_t RF69::receiveDirect() {
+  // activate direct mode
+  int16_t state = directMode();
+  if(state != ERR_NONE) {
+    return(state);
+  }
+  
+  // start receiving
+  return(setMode(RF69_RX));
+}
+
+int16_t RF69::directMode() {
+  // set mode to standby
+  int16_t state = setMode(RF69_STANDBY);
+  if(state != ERR_NONE) {
+    return(state);
+  }
+  
+  // set DIO mapping
+  state = _mod->SPIsetRegValue(RF69_REG_DIO_MAPPING_1, RF69_DIO1_CONT_DCLK | RF69_DIO2_CONT_DATA, 5, 2);
+  
+  // set continuous mode
+  state |= _mod->SPIsetRegValue(RF69_REG_DATA_MODUL, RF69_CONTINUOUS_MODE_WITH_SYNC, 6, 5);
+  return(state);
+}
+
+int16_t RF69::packetMode() {
+  return(_mod->SPIsetRegValue(RF69_REG_DATA_MODUL, RF69_PACKET_MODE, 6, 5));
+}
+
 void RF69::setAESKey(uint8_t* key) {
   _mod->SPIwriteRegisterBurst(RF69_REG_AES_KEY_1, key, 16);
 }

src/modules/RF69.h

@@ -4,6 +4,8 @@
 #include "TypeDef.h"
 #include "Module.h"
 
+#include "../protocols/PhysicalLayer.h"
+
 //RF69 register map
 #define RF69_REG_FIFO                                 0x00
 #define RF69_REG_OP_MODE                              0x01
@@ -279,6 +281,7 @@
 #define RF69_DIO1_PACK_FIFO_NOT_EMPTY                 0b00100000  //  5     4
 #define RF69_DIO1_PACK_PLL_LOCK                       0b00110000  //  5     4
 #define RF69_DIO1_PACK_TIMEOUT                        0b00110000  //  5     4
+#define RF69_DIO2_CONT_DATA                           0b00000000  //  3     2  
 
 //RF69_REG_DIO_MAPPING_2
 #define RF69_CLK_OUT_FXOSC                            0b00000000  //  2     0     ClkOut frequency: F(XOSC)
@@ -412,7 +415,7 @@
 #define RF69_PA2_NORMAL                               0x70        //  7     0     PA_BOOST: none
 #define RF69_PA2_20_DBM                               0x7C        //  7     0               +20 dBm
 
-class RF69 {
+class RF69: public PhysicalLayer {
   public:
     // constructor
     RF69(Module* module);
@@ -429,6 +432,9 @@ class RF69 {
     int16_t receive(String& str, size_t len = 0);
     int16_t sleep();
     int16_t standby();
+    int16_t transmitDirect(uint32_t FRF = 0);
+    int16_t receiveDirect();
+    int16_t packetMode();
     
     // hardware AES support
     void setAESKey(uint8_t* key);
@@ -468,6 +474,7 @@ class RF69 {
     int16_t _tempOffset;
     
     int16_t config();
+    int16_t directMode();
     
   private:
     int16_t setMode(uint8_t mode);