CC2652P7: Access to Low Link Layer to manage/control Channel and RF Power using Zephyr RTOS source code

Hi Farooq,

Zephyr actually provides APIs to do these

For the setting of channel frequency map, you can checkout the `bt_le_set_chan_map` API: https://docs.zephyrproject.org/3.7.0/doxygen/html/group__bt__gap.html#gabc115fd3fff6d00ae878a31613bf70aa

For changing the RF Power, there is an example in Zephyr that you can reference, called `hci_pwr_ctrl`: https://docs.zephyrproject.org/latest/samples/bluetooth/hci_pwr_ctrl/README.html

However, you may need to do something like the following for RF Power and also add `CONFIG_BT_HCI_VS=y` to your prj.conf file:

#define HCI_EXT_SET_TX_POWER_DBM  BT_OP(BT_OGF_VS, 0x002F)  /* 0xFC2F */      
                                                                                
  static void set_tx_power(int8_t tx_pwr_lvl)                                   
  {                                                                             
      struct net_buf *buf;                                                      
      int err;                                                                  
                                      
      buf = bt_hci_cmd_create(HCI_EXT_SET_TX_POWER_DBM, 1);                     
      if (!buf) {                                             
          printk("Failed to allocate TX power command buffer\n");               
          return;                                                               
      }                               
                                                                                
      net_buf_add_u8(buf, tx_pwr_lvl);                                          
                                      
      err = bt_hci_cmd_send(HCI_EXT_SET_TX_POWER_DBM, buf);                     
      if (err) {                                              
          printk("TX power SET failed (err %d)\n", err);                        
          return;                                                               
      }                               
                                                                                
      printk("TX power SET to %d dBm\n", tx_pwr_lvl);                           
  }

Regards,

Ging