Changed attenuator power to be int instead of float

4 files changed, 10 insertions, 10 deletions

diff --git a/libloragw/inc/loragw_fpga.h b/libloragw/inc/loragw_fpga.h
index d5b6f9d..722438c 100644
--- a/libloragw/inc/loragw_fpga.h
+++ b/libloragw/inc/loragw_fpga.h
@@ -135,6 +135,6 @@ int lgw_fpga_reg_wb(uint16_t register_id, uint8_t *data, uint16_t size);
 */
 int lgw_fpga_reg_rb(uint16_t register_id, uint8_t *data, uint16_t size);
 
-int lgw_set_attenuation(float *attn);
+int lgw_set_attenuation(uint8_t *attn);
 #endif
 /* --- EOF ------------------------------------------------------------------ */
diff --git a/libloragw/src/loragw_fpga.c b/libloragw/src/loragw_fpga.c
index 368fe37..906f4b5 100644
--- a/libloragw/src/loragw_fpga.c
+++ b/libloragw/src/loragw_fpga.c
@@ -366,7 +366,7 @@ int lgw_fpga_reg_rb(uint16_t register_id, uint8_t *data, uint16_t size) {
 
 /* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
 
-int lgw_set_attenuation(float *attn) {
+int lgw_set_attenuation(uint8_t *attn) {
     if (*attn < 0) {
         return LGW_HAL_ERROR;
     }
diff --git a/libloragw/src/loragw_hal.c b/libloragw/src/loragw_hal.c
index 386bd6d..9355cb8 100644
--- a/libloragw/src/loragw_hal.c
+++ b/libloragw/src/loragw_hal.c
@@ -1423,7 +1423,7 @@ int lgw_send(struct lgw_pkt_tx_s pkt_data) {
         /* Power is set to max and the attenuator brings down the level to match the packet's request */
         target_mix_gain = 15;  /* Mixer gain is not used for setting power*/
         lgw_reg_w(LGW_TX_GAIN, 0);  /* Dig gain is not used for setting power */
-        float attn = (float)(max_tx_power - pkt_data.rf_power);
+        uint8_t attn = (uint8_t)(max_tx_power - pkt_data.rf_power);
         x = lgw_set_attenuation(&attn);
         if (x != LGW_HAL_SUCCESS) {
             DEBUG_MSG("ERROR: Failed to set attenuation value\n");
diff --git a/util_tx_continuous/src/util_tx_continuous.c b/util_tx_continuous/src/util_tx_continuous.c
index 275c3eb..54d77f7 100644
--- a/util_tx_continuous/src/util_tx_continuous.c
+++ b/util_tx_continuous/src/util_tx_continuous.c
@@ -59,7 +59,7 @@ Maintainer: Matthieu Leurent
 #define DEFAULT_FDEV_KHZ        25
 #define DEFAULT_BT              2
 #define DEFAULT_NOTCH_FREQ      129000U
-#define DEFAULT_ATTENUATION     0.0
+#define DEFAULT_ATTENUATION     0
 
 /* -------------------------------------------------------------------------- */
 /* --- GLOBAL VARIABLES ----------------------------------------------------- */
@@ -109,7 +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;
+    uint8_t g_atten = DEFAULT_ATTENUATION;
     char mod[64] = DEFAULT_MODULATION;
     uint8_t sf = DEFAULT_SF;
     unsigned int bw_khz = DEFAULT_BW_KHZ;
@@ -267,13 +267,13 @@ int main(int argc, char **argv)
                     }
                 }
                 else if (strcmp(long_options[option_index].name,"attn") == 0) {
-                    i = sscanf(optarg, "%f", &arg_f);
-                    if ((i != 1) || (arg_f < 0.0) ) {
+                    i = sscanf(optarg, "%u", &arg_u);
+                    if ((i != 1) || (arg_f > 127) ) {
                         printf("ERROR: argument parsing of --attn argument. Use -h to print help\n");
                         return EXIT_FAILURE;
                     }
                     else {
-                        g_atten = arg_f;
+                        g_atten = arg_u;
                     }
                 }                
                 else {
@@ -363,9 +363,9 @@ int main(int argc, char **argv)
     txpkt.tx_mode = IMMEDIATE;
     txpkt.rf_chain = TX_RF_CHAIN;
     if (fpga_supports_attenuator()) {
-        txpkt.rf_power = 32.0 - g_atten;
+        txpkt.rf_power = 32 - g_atten;
     } else {
-        txpkt.rf_power = 0.0;
+        txpkt.rf_power = 0;
     }
 
     if (strcmp(mod, "FSK") == 0) {