Defined own structure to give CSMA backoff symbol time and cca mode.

Change-Id: Ia07c5d34ff1cb5b2d4fe01c77c60e9fccc4d065d

nanostack/platform/arm_hal_phy.h

@@ -62,8 +62,8 @@ typedef enum {
  PHY_EXTENSION_READ_TX_FINNISH_TIME, /**< Read the time of last finished TX symbol based on global time stamp. */
  PHY_EXTENSION_DYNAMIC_RF_SUPPORTED, /**< Read status for support Radio driver support for set TX time, CCA and Timestamp read. Also PHY_LINK_CCA_PREPARE tx status must be supported also*/
  PHY_EXTENSION_GET_TIMESTAMP, /**< Read 32-bit constant monotonic time stamp in us */
- PHY_EXTENSION_SET_CSMA_PARAMETERS, /**< CSMA parameter's: Include 32-bit backoff time in us and CCA mode used after timeout CCA is boolean true do normal CCA and false start TX direct*/
- PHY_EXTENSION_GET_SYMBOLS_IN_SECOND, /**< Read Symbols per seconds which will help to convert symbol time to real time */
+ PHY_EXTENSION_SET_CSMA_PARAMETERS, /**< CSMA parameter's are given by phy_csma_params_t structure remember type cast uint8_t pointer to structure type*/
+ PHY_EXTENSION_GET_SYMBOLS_PER_SECOND, /**< Read Symbols per seconds which will help to convert symbol time to real time */
 } phy_extension_type_e;
 
 /** Address types */
@@ -118,6 +118,12 @@ typedef struct phy_signal_info_s {
  uint16_t result; /**< Resulting signal information. */
 } phy_signal_info_s;
 
+/** CSMA-CA parameters */
+typedef struct phy_csma_params {
+ uint32_t symbol_backoff_time; /**< CSMA Backoff symbol time before start CCA & TX. */
+ bool cca_enabled; /**< True will affect CCA check false start TX direct after backoff */
+} phy_csma_params_t;
+
 /** PHY modulation scheme */
 typedef enum phy_modulation_e
 {