6de7a808af
On CPUs like nRF51 which run at 16MHz, certain BLE control procedure PDU processing take more CPU time than permitted inside tIFS (150us). Current implementation of Data Length Update procedure does not span over multiple connection interval (unlike Encryption Setup, which is another control procedure processing that would consume more CPU time) hence taking more CPU time inside tIFS on nRF51. During the radio ISR, the active clock and packet timer are active and it is used to profile the CPU time taken which is used to decide on whether there is sufficient time in the current radio event to process the control packet. This commit also fixes a potential bug that would cause disconnection due to MIC failure on encrypted connections that performed Data Length Update. Controller used to NACK the request/response PDU if it was not in a state to resize the receive buffers but did not reset the CCM counter. This is now fixed by the change done to NACK control PDU based on available CPU time in radio ISR. Change-id: Id58322ad76a0dbc284738cdd9a7c0437c9e8c423 Signed-off-by: Vinayak Chettimada <vinayak.kariappa.chettimada@nordicsemi.no>
110 lines
3.3 KiB
C
110 lines
3.3 KiB
C
/*
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* Copyright (c) 2016 Nordic Semiconductor ASA
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* Copyright (c) 2016 Vinayak Kariappa Chettimada
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _RADIO_H_
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#define _RADIO_H_
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/* Ramp up times from OPS.
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*/
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#define RADIO_TX_READY_DELAY_US 140
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#define RADIO_RX_READY_DELAY_US 138
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/* Chain delays from OPS.
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* nRF51: Tx= 1us, Rx= 3us;
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* nRF52: Tx= 0.6us, Rx= 9.4us.
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*/
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#define RADIO_TX_CHAIN_DELAY_US 1
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#define RADIO_RX_CHAIN_DELAY_US 10
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/* Radio Pkt Size */
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#define RADIO_EMPDU_SIZE_MAX 3
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#define RADIO_ACPDU_SIZE_OVERHEAD 3
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#define RADIO_ACPDU_SIZE_MAX (37 + RADIO_ACPDU_SIZE_OVERHEAD)
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typedef void (*radio_isr_fp) (void);
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void radio_isr(void);
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void radio_isr_set(radio_isr_fp fp_radio_isr);
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void radio_reset(void);
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void radio_phy_set(uint8_t phy);
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void radio_tx_power_set(uint32_t power);
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void radio_freq_chnl_set(uint32_t chnl);
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void radio_whiten_iv_set(uint32_t iv);
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void radio_aa_set(uint8_t *aa);
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void radio_pkt_configure(uint8_t preamble16, uint8_t bits_len, uint8_t max_len);
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void radio_pkt_rx_set(void *rx_packet);
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void radio_pkt_tx_set(void *tx_packet);
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void radio_rx_enable(void);
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void radio_tx_enable(void);
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void radio_disable(void);
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void radio_status_reset(void);
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uint32_t radio_is_ready(void);
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uint32_t radio_is_done(void);
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uint32_t radio_has_disabled(void);
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uint32_t radio_is_idle(void);
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void radio_crc_configure(uint32_t polynomial, uint32_t iv);
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uint32_t radio_crc_is_valid(void);
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void *radio_pkt_empty_get(void);
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void *radio_pkt_scratch_get(void);
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void radio_switch_complete_and_rx(void);
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void radio_switch_complete_and_tx(void);
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void radio_switch_complete_and_disable(void);
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void radio_rssi_measure(void);
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uint32_t radio_rssi_get(void);
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void radio_rssi_status_reset(void);
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uint32_t radio_rssi_is_ready(void);
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void radio_filter_configure(uint8_t bitmask_enable,
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uint8_t bitmask_addr_type,
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uint8_t *bdaddr);
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void radio_filter_disable(void);
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void radio_filter_status_reset(void);
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uint32_t radio_filter_has_match(void);
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void radio_bc_configure(uint32_t n);
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void radio_bc_status_reset(void);
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uint32_t radio_bc_has_match(void);
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void radio_tmr_status_reset(void);
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void radio_tmr_tifs_set(uint32_t tifs);
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uint32_t radio_tmr_start(uint8_t trx, uint32_t ticks_start, uint32_t remainder);
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void radio_tmr_stop(void);
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void radio_tmr_hcto_configure(uint32_t hcto);
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void radio_tmr_aa_capture(void);
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uint32_t radio_tmr_aa_get(void);
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void radio_tmr_end_capture(void);
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uint32_t radio_tmr_end_get(void);
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void radio_tmr_sample(void);
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uint32_t radio_tmr_sample_get(void);
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void *radio_ccm_rx_pkt_set(struct ccm *ccm, void *pkt);
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void *radio_ccm_tx_pkt_set(struct ccm *ccm, void *pkt);
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uint32_t radio_ccm_is_done(void);
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uint32_t radio_ccm_mic_is_valid(void);
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void radio_ar_configure(uint32_t nirk, void *irk);
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uint32_t radio_ar_match_get(void);
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void radio_ar_status_reset(void);
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uint32_t radio_ar_has_match(void);
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#endif
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