Diff: main.cpp

Revision:

1:b277f5a65c1c

Parent:

0:44fb2db84011

Child:

2:546880a768fa

--- a/main.cpp	Wed Feb 20 07:27:34 2019 +0000
+++ b/main.cpp	Thu Mar 21 10:22:46 2019 +0000
@@ -1,5 +1,7 @@
 #include "radio.h"
 
+// Semtech radio definitions for SX127x, SX126x and SX128x
+
 #if defined(SX127x_H)
     #define BW_KHZ              500
     #define SPREADING_FACTOR    11
@@ -17,7 +19,9 @@
     #define TX_DBM              6
 #endif
 
-/**********************************************************************/
+/******************** Setup radio transmitter ****************************/
+
+
 volatile bool txDone;
 
 void txDoneCB()
@@ -29,6 +33,8 @@
 {
 }
 
+    // Define radio events for transmitter
+
 const RadioEvents_t rev = {
     /* Dio0_top_half */     NULL,
     /* TxDone_topHalf */    NULL,
@@ -43,19 +49,26 @@
 
 int main()
 {
-    uint8_t seq = 0;
-
+    uint8_t seq = 0;  //  Set initial transmit sequence to 0
+ 
     printf("\r\nreset-tx ");
+    
+    // Start radio transmitter after POR or reset
 
     Radio::Init(&rev);
 
+    //Set radio properties for transmitter
+
     Radio::Standby();
     Radio::LoRaModemConfig(BW_KHZ, SPREADING_FACTOR, 1);
     Radio::SetChannel(CF_HZ);
 
+    // Set transmitter output power
+
     Radio::set_tx_dbm(TX_DBM);
 
-               // preambleLen, fixLen, crcOn, invIQ
+    // Setup transmit packet payload  -> preambleLen, fixLen, crcOn, invIQ
+               
     Radio::LoRaPacketConfig(8, false, true, false);
     
     printf("\n");
@@ -63,21 +76,19 @@
     printf("%02d \r\n\n", seq);
 
     for (;;) {
-        Radio::radio.tx_buf[0] = seq;  /* set payload */
+        Radio::radio.tx_buf[0] = seq;  // set payload 
         txDone = false;
-        Radio::Send(10, 0, 0, 0);   /* begin transmission */
+        Radio::Send(10, 0, 0, 0);   // begin transmission of payload 
 
-        //printf("sent\r\n\n");
         while (!txDone) {
             Radio::service();
         }
 
-        //printf("got-tx-done\r\n\n");
+        // Transmit payload every 500mS
 
-        wait(0.5);  /* throttle sending rate */
-        seq++;  /* change payload */
-        printf("%02d \r\n\n", seq);
+        wait(0.5);  // throttle sending rate 
+        seq++;  // change payload (increment sequence number)
+        printf("%02d \r\n\n", seq);  // Print sequence number
         
-        
-    }
+        }
 }