Diff: TARGET_DISCO_L072CZ_LRWAN1/radio_typeABZ.cpp

Revision:

5:ab124d3842a8

Parent:

0:9c052ff8dd6a

Child:

18:78c5e644d37a

--- a/TARGET_DISCO_L072CZ_LRWAN1/radio_typeABZ.cpp	Mon Aug 20 14:07:47 2018 -0700
+++ b/TARGET_DISCO_L072CZ_LRWAN1/radio_typeABZ.cpp	Sun Nov 25 17:12:03 2018 -0800
@@ -2,7 +2,8 @@
 
 #define SSA_BOARD   1
 
-SPI spi(PA_7, PA_6, PB_3); // mosi, miso, sclk
+#include "SPIu.h"
+SPIu spi(PA_7, PA_6, PB_3); // mosi, miso, sclk
 //                  dio0, dio1,  nss,  spi,  rst
 SX127x Radio::radio(PB_4, PB_1, PA_15, spi, PC_0); // sx1276 arduino shield
 SX127x_lora Radio::lora(radio);
@@ -44,6 +45,18 @@
 Radio::set_tx_dbm(int8_t dbm)
 {
     RegPdsTrim1_t pds_trim;
+    unsigned v = radio.read_reg(REG_PATEST_SX1276);
+
+    if (dbm == PA_OFF_DBM) {
+        /* for bench testing: prevent overloading receiving station (very low TX power) */
+        v &= ~0x20; // turn off pu_regpa_n: disable PA
+        radio.write_reg(REG_PATEST_SX1276, v);
+        return;
+    } else if ((v & 0x20) == 0) {
+        v |= 0x20; // turn on pu_regpa_n: enable PA
+        radio.write_reg(REG_PATEST_SX1276, v);
+    }
+
     pds_trim.octet = radio.read_reg(REG_PDSTRIM1_SX1276);
 
     if (dbm > 13) {