Diff: radio.cpp

Revision:

8:0faa1bb768b5

Parent:

4:1a9a62cf220f

Child:

9:83ae7f34e88c

--- a/radio.cpp	Mon Sep 21 17:59:42 2015 +0000
+++ b/radio.cpp	Wed Oct 21 01:03:34 2015 +0000
@@ -399,7 +399,33 @@
 
 DigitalOut pd2(PD_2);   // power amplifier voltage control pin
 
+/*     pd2=0   pd2=1
+op pab  rfo     rfo
+0  4.6  18.5    27.0
+1  5.6  21.1    28.1
+2  6.7  23.3    29.1
+3  7.7  25.3    30.1
+4  8.8  26.2    30.7
+5  9.8  27.3    31.2
+6  10.7 28.1    31.6
+7  11.7 28.6    32.2
+8  12.8 29.2    32.4
+9  13.7 29.9    32.9
+10 14.7 30.5    33.1
+11 15.6 30.8    33.4
+12 16.4 30.9    33.6
+13 17.1 31.0    33.7
+14 17.8 31.1    33.7
+15 18.4 31.1    33.7
+*/
+//                     txpow:   0  1  2  3  4  5  6  7  8  9 10 11 12 13 14  15  16  17  18  19
+static const u1_t boost_table[20] = { 0, 0, 0, 0, 0, 1, 2, 3, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15 };
+
+//                     txpow:  20 21 22 23 24 25 26 27 28 29 30
+static const u1_t   rfo_table[11] = { 1, 1, 1, 2, 2, 3, 4, 5, 6, 8, 9 }; 
+
 static void configPower () {
+    printf("txpow:%d ", LMIC.txpow);
 #ifdef CFG_sx1276_radio
     // no boost used for now
     s1_t pw = (s1_t)LMIC.txpow;
@@ -413,30 +439,17 @@
     writeReg(RegPaDac, readReg(RegPaDac)|0x4);
 
 #elif defined(CFG_sx1272_radio)
-    // set PA config (2-17 dBm using PA_BOOST)
-    s1_t pw = (s1_t)LMIC.txpow;
-    /*if(pw > 17) {
-        pw = 17;
-    } else if(pw < 2) {
-        pw = 2;
-    }*/
+
     /* NA-mote TX power config: */
-    if (pw > 23) {
-        // use RFO with external amplifier
+    if (LMIC.txpow > 19) {
         PaSelect = 0x00;    // use RFO
-        writeReg(RegPaConfig, (u1_t)(PaSelect|(pw-25)));
-        if (pw > 26)
-            pd2 = 1;
-        else
-            pd2 = 0;
+        writeReg(RegPaConfig, PaSelect | rfo_table[LMIC.txpow-20]);
+        pd2 = 0;
     } else {
-        // use PA_BOOST direct to antenna
         PaSelect = 0x80;    // use PA_BOOST 
-        if (pw > 17)
-            pw = 17;
-        writeReg(RegPaConfig, (u1_t)(PaSelect|(pw-2)));
+        writeReg(RegPaConfig, PaSelect | boost_table[LMIC.txpow]);
     }
-    
+    //printf("PaConfig:%02x\r\n", readReg(RegPaConfig));
     
 #else
 #error Missing CFG_sx1272_radio/CFG_sx1276_radio