From 1e66084295f37f0d7f5f0a3518e43ae0cc613898 Mon Sep 17 00:00:00 2001
From: Harsh Sharma <harsh.sharma@multitech.com>
Date: Thu, 9 Aug 2018 15:10:43 -0500
Subject: Changed attenuation setup to be the difference between the LUT power
 and the tx packet power and make it automatically set

---
 util_tx_continuous/src/util_tx_continuous.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'util_tx_continuous')

diff --git a/util_tx_continuous/src/util_tx_continuous.c b/util_tx_continuous/src/util_tx_continuous.c
index 79cf4b4..7768c22 100644
--- a/util_tx_continuous/src/util_tx_continuous.c
+++ b/util_tx_continuous/src/util_tx_continuous.c
@@ -59,6 +59,7 @@ Maintainer: Matthieu Leurent
 #define DEFAULT_FDEV_KHZ        25
 #define DEFAULT_BT              2
 #define DEFAULT_NOTCH_FREQ      129000U
+#define DEFAULT_ATTENUATION     0.0
 
 /* -------------------------------------------------------------------------- */
 /* --- GLOBAL VARIABLES ----------------------------------------------------- */
@@ -95,6 +96,7 @@ int main(int argc, char **argv)
         {"fdev", 1, 0, 0},
         {"bt", 1, 0, 0},
         {"notch", 1, 0, 0},
+        {"attn", 1, 0, 0},
         {0, 0, 0, 0}
     };
     unsigned int arg_u;
@@ -107,6 +109,7 @@ int main(int argc, char **argv)
     uint8_t g_dac = DEFAULT_DAC_GAIN;
     uint8_t g_mix = DEFAULT_MIXER_GAIN;
     uint8_t g_pa = DEFAULT_PA_GAIN;
+    float g_atten = DEFAULT_ATTENUATION;
     char mod[64] = DEFAULT_MODULATION;
     uint8_t sf = DEFAULT_SF;
     unsigned int bw_khz = DEFAULT_BW_KHZ;
@@ -146,6 +149,7 @@ int main(int argc, char **argv)
                 printf(" --br    <float>  FSK bitrate in kbps, [0.5:250]\n");
                 printf(" --fdev  <uint>   FSK frequency deviation in kHz, [1:250]\n");
                 printf(" --bt    <uint>   FSK gaussian filter BT trim, [0:3]\n");
+                printf(" --attn  <float>  Attenuator value in dB, Full Card Only [0.0:31.75]\n");
                 printf("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n");
                 return EXIT_SUCCESS;
                 break;
@@ -262,6 +266,16 @@ int main(int argc, char **argv)
                         tx_notch_freq = (uint32_t)arg_u * 1000U;
                     }
                 }
+                else if (strcmp(long_options[option_index].name,"attn") == 0) {
+                    i = sscanf(optarg, "%f", &arg_f);
+                    if ((i != 1) || (arg_f < 0.0) || (arg_f > 31.75)) {
+                        printf("ERROR: argument parsing of --br argument. Use -h to print help\n");
+                        return EXIT_FAILURE;
+                    }
+                    else {
+                        g_atten = arg_f;
+                    }
+                }                
                 else {
                     printf("ERROR: argument parsing options. Use -h to print help\n");
                     return EXIT_FAILURE;
@@ -349,6 +363,10 @@ int main(int argc, char **argv)
     txpkt.tx_mode = IMMEDIATE;
     txpkt.rf_chain = TX_RF_CHAIN;
     txpkt.rf_power = 0;
+    if (read_fpga_version() == 32) {
+        i = lgw_set_attenuation(g_atten);
+    }
+
     if (strcmp(mod, "FSK") == 0) {
         txpkt.modulation = MOD_FSK;
         txpkt.datarate = br_kbps * 1e3;
-- 
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