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Bluetooth: Controller: nRF53x: Fix NRF_CCM MAXPACKETSIZE value

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Fix NRF_CCM MAXPACKETSIZE value to mitigate Bus Faults.

Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
This commit is contained in:
Vinayak Kariappa Chettimada 2025-05-13 14:30:26 +02:00 • committed by Benjamin Cabé
commit 920117922b
1 changed files with 6 additions and 1 deletions
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7
subsys/bluetooth/controller/ll_sw/nordic/hal/nrf5/radio/radio.c
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@ -2214,11 +2214,16 @@ static void *radio_ccm_ext_rx_pkt_set(struct ccm *cnf, uint8_t phy, uint8_t pdu_
!defined(CONFIG_SOC_COMPATIBLE_NRF54LX) && \
(!defined(CONFIG_BT_CTLR_DATA_LENGTH_MAX) || \
(CONFIG_BT_CTLR_DATA_LENGTH_MAX < ((HAL_RADIO_PDU_LEN_MAX) - 4U)))
#define NRF_CCM_WORKAROUND_XXXX_MAXPACKETSIZE_EXTRA 1U
const uint8_t max_len = (NRF_RADIO->PCNF1 & RADIO_PCNF1_MAXLEN_Msk) >>
RADIO_PCNF1_MAXLEN_Pos;
/* MAXPACKETSIZE value 0x001B (27) - 0x00FB (251) bytes */
NRF_CCM->MAXPACKETSIZE = max_len - 4U;
NRF_CCM->MAXPACKETSIZE =
MAX(MIN((max_len - 4U + NRF_CCM_WORKAROUND_XXXX_MAXPACKETSIZE_EXTRA), 0x00FB),
0x001B);
#endif
#if defined(CONFIG_SOC_COMPATIBLE_NRF54LX)