Force K22 mode on Elecraft rigs to get PC power level in .1W intervals for low power operations

https://github.com/Hamlib/Hamlib/issues/1205

rigs/kenwood/elecraft.c

@@ -165,6 +165,18 @@ int elecraft_open(RIG *rig)
         }
     }
 
+    if (rig->caps->rig_model != RIG_MODEL_XG3)   // XG3 doesn't have extended
+    {
+        // turn on k2 extended to get PC values in more resolution
+        err = kenwood_transaction(rig, "K22;", NULL, 0);
+
+        if (err != RIG_OK)
+        {
+            rig_debug(RIG_DEBUG_ERR, "%s: error setting K22='%s'...continuing\n", __func__,
+                      rigerror(err));
+        }
+    }
+
     switch (rig->caps->rig_model)
     {
     case RIG_MODEL_K2:
@@ -310,8 +322,8 @@ int elecraft_open(RIG *rig)
         kenwood_get_trn(rig, &priv->trn_state);  /* ignore errors */
         /* Currently we cannot cope with AI mode so turn it off in
              case last client left it on */
-        kenwood_set_trn(rig, RIG_TRN_OFF); /* ignore status in case
-                                                                                        it's not supported */
+        kenwood_set_trn(rig,
+                        RIG_TRN_OFF); /* ignore status in case it's not supported */
     }
 
     // For rigs like K3X vfo emulation need to set VFO_A to start

rigs/kenwood/k3.c

@@ -160,7 +160,8 @@ int kx3_set_level(RIG *rig, vfo_t vfo, setting_t level, value_t val);
 int kx3_get_level(RIG *rig, vfo_t vfo, setting_t level, value_t *val);
 int k3_set_func(RIG *rig, vfo_t vfo, setting_t func, int status);
 int k3_get_func(RIG *rig, vfo_t vfo, setting_t func, int *status);
-int k3_power2mW(RIG *rig, unsigned int *mwpower, float power, freq_t freq, rmode_t mode);
+int k3_power2mW(RIG *rig, unsigned int *mwpower, float power, freq_t freq,
+                rmode_t mode);
 
 /* Private helper functions */
 int set_rit_xit(RIG *rig, shortfreq_t rit);
@@ -1825,6 +1826,7 @@ static int k3_get_maxpower(RIG *rig)
             break;
         }
     }
+
 #endif
 
     rig_debug(RIG_DEBUG_TRACE, "%s: maxpower=%d\n", __func__, maxpower);
@@ -1944,8 +1946,9 @@ int k3_set_level(RIG *rig, vfo_t vfo, setting_t level, value_t val)
         break;
 
     case RIG_LEVEL_RFPOWER:
-        SNPRINTF(levelbuf, sizeof(levelbuf), "PC%03d",
-                 (int)(val.f * k3_get_maxpower(rig)));
+        kenwood_val = (int)(val.f * k3_get_maxpower(rig));
+        SNPRINTF(levelbuf, sizeof(levelbuf), "PC%03d%s", kenwood_val,
+                 kenwood_val > 15 ? "1" : "0");
         break;
 
     default:
@@ -2247,7 +2250,15 @@ int k3_get_level(RIG *rig, vfo_t vfo, setting_t level, value_t *val)
             return RIG_EPROTO;
         }
 
-        val->f = (float) lvl / k3_get_maxpower(rig);
+        // extended K22 format PCnnnx where 0=.1W units and 1=1W units
+        if (len == 6 && levelbuf[5] == '0')
+        {
+            val->f = (float) lvl / 10.0 / k3_get_maxpower(rig);
+        }
+        else
+        {
+            val->f = (float) lvl / k3_get_maxpower(rig);
+        }
 
         break;
 

simulators/simelecraft.c

@@ -132,7 +132,8 @@ int main(int argc, char *argv[])
         {
             printf("%s\n", buf);
             usleep(50 * 1000);
-            pbuf = "IF059014200000+000000700000;";
+            //pbuf = "IF059014200000+000000700000;";
+            pbuf = "IF00007230000     -000000 0001000001 ;" ;
             n = write(fd, pbuf, strlen(pbuf));
             printf("n=%d\n", n);
 
@@ -280,7 +281,7 @@ int main(int argc, char *argv[])
         }
         else if (strncmp(buf, "PC;", 3) == 0)
         {
-            SNPRINTF(buf, sizeof(buf), "PC005;");
+            SNPRINTF(buf, sizeof(buf), "PC0150;");
             n = write(fd, buf, strlen(buf));
         }
         else if (strlen(buf) > 0)