Added function to get PD offset by address in control panel

include/osdp.h

@@ -1176,6 +1176,20 @@ void osdp_cp_refresh(osdp_t *ctx);
 OSDP_EXPORT
 void osdp_cp_teardown(osdp_t *ctx);
 
+/**
+ * @brief Get the PD offset (0-indexed) in the internal `osdp_pd_info_t *`
+ * list that is registered in the given address.
+ *
+ * @param ctx OSDP context
+ * @param address PD address of the device in `osdp_pd_info_t *` passed to
+ * osdp_cp_setup()
+ *
+ * @retval PD offset (0-indexed) on success
+ * @retval -1 on failure
+ */
+OSDP_EXPORT
+int osdp_cp_get_pd_by_addr(osdp_t *ctx, int address);
+
 /**
  * @brief Generic command enqueue API.
  *

include/osdp.hpp

@@ -120,6 +120,11 @@ class OSDP_EXPORT ControlPanel : public Common {
 		osdp_cp_set_command_completion_callback(_ctx, cb, arg);
 	}
 
+	int get_pd_by_addr(int address)
+	{
+		return osdp_cp_get_pd_by_addr(_ctx, address);
+	}
+
 	int get_pd_id(int pd, struct osdp_pd_id *id)
 	{
 		return osdp_cp_get_pd_id(_ctx, pd, id);

src/osdp_cp.c

@@ -1612,6 +1612,22 @@ void osdp_cp_teardown(osdp_t *ctx)
 #endif
 }
 
+int osdp_cp_get_pd_by_addr(osdp_t *ctx, int address)
+{
+	input_check(ctx);
+	int i;
+	struct osdp_pd *pd;
+
+	for (i = 0; i < NUM_PD(ctx); i++) {
+		pd = osdp_to_pd(ctx, i);
+		if (pd->address == address) {
+			return i;
+		}
+	}
+
+	return -1;
+}						
+
 void osdp_cp_refresh(osdp_t *ctx)
 {
 	input_check(ctx);

src/osdp_diag.c

@@ -52,7 +52,7 @@ void osdp_packet_capture_finish(struct osdp_pd *pd)
 		LOG_ERR("Unable to stop capture (flush/close failed)");
 		return;
 	}
-	LOG_INF("Captured %d packets", num_packets);
+	LOG_INF("Captured %zu packets", num_packets);
 }
 
 void osdp_capture_packet(struct osdp_pd *pd, uint8_t *buf, int len)