Added APIs for Device min sense and CCA threshold table.

-Added get, set and validate API for device min sens.
-Added get API for CCA threshold table.

Author: debdeep-arm

features/nanostack/mbed-mesh-api/mbed-mesh-api/WisunInterface.h

@@ -53,8 +53,20 @@ typedef struct ws_stack_state {
     uint8_t join_state;
     /** Network PAN ID */
     uint16_t pan_id;
+    /** Device RF minimum sensitivity configuration. lowest level of radio signal strength packet heard. Range of -174 (0) to +80 (254) dBm*/
+    uint8_t device_min_sens;
 } ws_stack_state_t;
 
+/**
+ * \brief Struct ws_cca_threshold_table Wi-SUN CCA threshold table information.
+ */
+typedef struct ws_cca_threshold_table {
+    /** Number of channels */
+    uint8_t number_of_channels;
+    /** CCA threshold table */
+    const int8_t *cca_threshold_table;
+} ws_cca_threshold_table_t;
+
 /** Wi-SUN mesh network interface class
  *
  * Configure Nanostack to use Wi-SUN protocol.
@@ -373,6 +385,41 @@ class WisunInterface : public MeshInterfaceNanostack {
      * */
     mesh_error_t validate_timing_parameters(uint16_t disc_trickle_imin, uint16_t disc_trickle_imax, uint8_t disc_trickle_k, uint16_t pan_timeout);
 
+    /**
+     * \brief Set Wi-SUN device minimum sensitivity
+     *
+     * Function stores new parameters to mbed-mesh-api and uses them when connect() is called next time.
+     * If device is already connected to the Wi-SUN network then settings take effect right away.
+     *
+     * \param device_min_sens Device minimum sensitivity. Range 0(-174 dB) to 254(+80 dB).
+     * \return MESH_ERROR_NONE on success.
+     * \return MESH_ERROR_UNKNOWN in case of failure.
+     * */
+    mesh_error_t set_device_min_sens(uint8_t device_min_sens);
+
+    /**
+     * \brief Get Wi-SUN device minimum sensitivity.
+     *
+     * Function reads device minimum sensitivity from mbed-mesh-api.
+     *
+     * \param device_min_sens Device minimum sensitivity. Range 0-254.
+     * \return MESH_ERROR_NONE on success.
+     * \return MESH_ERROR_UNKNOWN in case of failure.
+     * */
+    mesh_error_t get_device_min_sens(uint8_t *device_min_sens);
+
+    /**
+     * \brief Validates Device minimum sensitivity.
+     *
+     * Function validates device minimum sensitivity. Function can be used to test that values that will be used on set
+     * function are valid.
+     *
+     * \param device_min_sens Device minimum sensitivity. Range 0-254.
+     * \return MESH_ERROR_NONE on success.
+     * \return MESH_ERROR_UNKNOWN in case of failure.
+     * */
+    mesh_error_t validate_device_min_sens(uint8_t device_min_sens);
+
     /**
      * \brief Set own certificate and private key reference to the Wi-SUN network.
      *
@@ -495,6 +542,16 @@ class WisunInterface : public MeshInterfaceNanostack {
      * */
     mesh_error_t stack_info_get(ws_stack_state_t *stack_info_ptr);
 
+    /**
+     * \brief Get Wi-SUN CCA threshold table information.
+     *
+     * Function reads CCA threshold table from nanostack.
+     *
+     * \return pointer to ws_cca_threshold_table_t structure on success.
+     * \return NULL in case of failure.
+     * */
+    const ws_cca_threshold_table_t *cca_threshold_table_get(void);
+
 protected:
     Nanostack::WisunInterface *get_interface() const;
     virtual nsapi_error_t do_initialize();

features/nanostack/mbed-mesh-api/source/WisunInterface.cpp

@@ -470,6 +470,42 @@ mesh_error_t WisunInterface::validate_timing_parameters(uint16_t disc_trickle_im
     return MESH_ERROR_NONE;
 }
 
+mesh_error_t WisunInterface::set_device_min_sens(uint8_t device_min_sens)
+{
+    int status = ws_device_min_sens_set(get_interface_id(), device_min_sens);
+    if (status != 0) {
+        return MESH_ERROR_UNKNOWN;
+    }
+
+    return MESH_ERROR_NONE;
+}
+
+mesh_error_t WisunInterface::get_device_min_sens(uint8_t *device_min_sens)
+{
+    if (device_min_sens == NULL) {
+        return MESH_ERROR_PARAM;
+    }
+
+    ws_stack_info_t stack_info = {0};
+
+    if (ws_stack_info_get(get_interface_id(), &stack_info)) {
+        return MESH_ERROR_UNKNOWN;
+    }
+
+    *device_min_sens = stack_info.device_min_sens;
+
+    return MESH_ERROR_NONE;
+}
+
+mesh_error_t WisunInterface::validate_device_min_sens(uint8_t device_min_sens)
+{
+    if (device_min_sens == 0xFF) {
+        return MESH_ERROR_UNKNOWN;
+    }
+
+    return MESH_ERROR_NONE;
+}
+
 mesh_error_t WisunInterface::set_own_certificate(uint8_t *cert, uint16_t cert_len, uint8_t *cert_key, uint16_t cert_key_len)
 {
     mesh_error_t ret_val = MESH_ERROR_NONE;
@@ -627,13 +663,21 @@ mesh_error_t WisunInterface::stack_info_get(ws_stack_state_t *stack_info_ptr)
     stack_info_ptr->pan_id = stack_info.pan_id;
     stack_info_ptr->rsl_in = stack_info.rsl_in;
     stack_info_ptr->rsl_out = stack_info.rsl_out;
+    stack_info_ptr->device_min_sens = stack_info.device_min_sens;
     memcpy(stack_info_ptr->parent_addr, stack_info.parent, 16);
     memcpy(stack_info_ptr->global_addr, global_address, 16);
     memcpy(stack_info_ptr->link_local_addr, link_local_address, 16);
 
     return MESH_ERROR_NONE;
 }
 
+const ws_cca_threshold_table_t *WisunInterface::cca_threshold_table_get(void)
+{
+    const cca_threshold_table_s *cca_threshold_table = arm_nwk_get_cca_threshold_table(get_interface_id());
+
+    return (const ws_cca_threshold_table_t *)cca_threshold_table;
+}
+
 #define WISUN 0x2345
 #if MBED_CONF_NSAPI_DEFAULT_MESH_TYPE == WISUN && DEVICE_802_15_4_PHY
 MBED_WEAK MeshInterface *MeshInterface::get_target_default_instance()