nRF52833 Tx Power to 8dBm

Question

Hello fellow developers, 
 we're evaluating the BL653 (nRF52833 chip) for our application using the ESB protocol (BLE). 
 I'm using Zephyr RTOS + nRF Connect SDK + NCS 1.9.1 here. 
 Currently, according to the API, the maximum transmit power available ( enum esb_tx_power) is 4dBm. 
 But according to the specs of the device (Laird) it may reach up to 8dBm . 
 Is there a way to "hack" it and get the 8dBm via the API? 
 Thanks in advance,

Vagner Landskron · Accepted Answer

It seems like the solution is pretty simple, just have added to enum esb_tx_power in esb.h the following: 
 
 ESB_TX_POWER_8DBM = RADIO_TXPOWER_TXPOWER_Pos8dBm 
 
 The final enum looks like this: 
 
 enum esb_tx_power {
	ESB_TX_POWER_8DBM = RADIO_TXPOWER_TXPOWER_Pos8dBm, 
	/** 4 dBm radio transmit power. */
#if !defined(CONFIG_SOC_NRF5340_CPUNET)
	ESB_TX_POWER_4DBM = RADIO_TXPOWER_TXPOWER_Pos4dBm,
#endif
#if defined(CONFIG_SOC_SERIES_NRF52X)
	/** 3 dBm radio transmit power. */
	ESB_TX_POWER_3DBM = RADIO_TXPOWER_TXPOWER_Pos3dBm,
#endif
	/** 0 dBm radio transmit power. */
	ESB_TX_POWER_0DBM = RADIO_TXPOWER_TXPOWER_0dBm,
	/** -4 dBm radio transmit power. */
	ESB_TX_POWER_NEG4DBM = RADIO_TXPOWER_TXPOWER_Neg4dBm,
	/** -8 dBm radio transmit power. */
	ESB_TX_POWER_NEG8DBM = RADIO_TXPOWER_TXPOWER_Neg8dBm,
	/** -12 dBm radio transmit power. */
	ESB_TX_POWER_NEG12DBM = RADIO_TXPOWER_TXPOWER_Neg12dBm,
	/** -16 dBm radio transmit power. */
	ESB_TX_POWER_NEG16DBM = RADIO_TXPOWER_TXPOWER_Neg16dBm,
	/** -20 dBm radio transmit power. */
	ESB_TX_POWER_NEG20DBM = RADIO_TXPOWER_TXPOWER_Neg20dBm,
	/** -30 dBm radio transmit power. */
	ESB_TX_POWER_NEG30DBM = RADIO_TXPOWER_TXPOWER_Neg30dBm,
	/** -40 dBm radio transmit power. */
	ESB_TX_POWER_NEG40DBM = RADIO_TXPOWER_TXPOWER_Neg40dBm
};