| /* |
| * Copyright (c) 2018-2020 Nordic Semiconductor ASA |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <stdbool.h> |
| |
| #include <toolchain.h> |
| #include <zephyr/types.h> |
| #include <sys/util.h> |
| |
| #include "hal/ccm.h" |
| #include "hal/radio.h" |
| #include "hal/ticker.h" |
| |
| #include "util/memq.h" |
| |
| #include "pdu.h" |
| |
| #include "lll.h" |
| #include "lll_vendor.h" |
| #include "lll_clock.h" |
| #include "lll_conn.h" |
| #include "lll_slave.h" |
| #include "lll_chan.h" |
| |
| #include "lll_internal.h" |
| #include "lll_tim_internal.h" |
| |
| #define BT_DBG_ENABLED IS_ENABLED(CONFIG_BT_DEBUG_HCI_DRIVER) |
| #define LOG_MODULE_NAME bt_ctlr_lll_slave |
| #include "common/log.h" |
| #include <soc.h> |
| #include "hal/debug.h" |
| |
| static int init_reset(void); |
| static int prepare_cb(struct lll_prepare_param *prepare_param); |
| |
| int lll_slave_init(void) |
| { |
| int err; |
| |
| err = init_reset(); |
| if (err) { |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| int lll_slave_reset(void) |
| { |
| int err; |
| |
| err = init_reset(); |
| if (err) { |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| void lll_slave_prepare(void *param) |
| { |
| struct lll_prepare_param *p = param; |
| struct lll_conn *lll = p->param; |
| u16_t elapsed; |
| int err; |
| |
| err = lll_hfclock_on(); |
| LL_ASSERT(!err || err == -EINPROGRESS); |
| |
| /* Instants elapsed */ |
| elapsed = p->lazy + 1; |
| |
| /* Save the (latency + 1) for use in event */ |
| lll->latency_prepare += elapsed; |
| |
| /* Accumulate window widening */ |
| lll->slave.window_widening_prepare_us += |
| lll->slave.window_widening_periodic_us * elapsed; |
| if (lll->slave.window_widening_prepare_us > |
| lll->slave.window_widening_max_us) { |
| lll->slave.window_widening_prepare_us = |
| lll->slave.window_widening_max_us; |
| } |
| |
| /* Invoke common pipeline handling of prepare */ |
| err = lll_prepare(lll_conn_is_abort_cb, lll_conn_abort_cb, prepare_cb, |
| 0, p); |
| LL_ASSERT(!err || err == -EINPROGRESS); |
| } |
| |
| static int init_reset(void) |
| { |
| return 0; |
| } |
| |
| static int prepare_cb(struct lll_prepare_param *prepare_param) |
| { |
| struct lll_conn *lll = prepare_param->param; |
| u32_t ticks_at_event, ticks_at_start; |
| struct evt_hdr *evt; |
| u16_t event_counter; |
| u32_t remainder_us; |
| u8_t data_chan_use; |
| u32_t remainder; |
| u32_t hcto; |
| |
| DEBUG_RADIO_START_S(1); |
| |
| /* Reset connection event global variables */ |
| lll_conn_prepare_reset(); |
| |
| /* Deduce the latency */ |
| lll->latency_event = lll->latency_prepare - 1; |
| |
| /* Calculate the current event counter value */ |
| event_counter = lll->event_counter + lll->latency_event; |
| |
| /* Update event counter to next value */ |
| lll->event_counter = lll->event_counter + lll->latency_prepare; |
| |
| /* Reset accumulated latencies */ |
| lll->latency_prepare = 0; |
| |
| if (lll->data_chan_sel) { |
| #if defined(CONFIG_BT_CTLR_CHAN_SEL_2) |
| data_chan_use = lll_chan_sel_2(event_counter, lll->data_chan_id, |
| &lll->data_chan_map[0], |
| lll->data_chan_count); |
| #else /* !CONFIG_BT_CTLR_CHAN_SEL_2 */ |
| data_chan_use = 0; |
| LL_ASSERT(0); |
| #endif /* !CONFIG_BT_CTLR_CHAN_SEL_2 */ |
| } else { |
| data_chan_use = lll_chan_sel_1(&lll->data_chan_use, |
| lll->data_chan_hop, |
| lll->latency_event, |
| &lll->data_chan_map[0], |
| lll->data_chan_count); |
| } |
| |
| /* current window widening */ |
| lll->slave.window_widening_event_us += |
| lll->slave.window_widening_prepare_us; |
| lll->slave.window_widening_prepare_us = 0; |
| if (lll->slave.window_widening_event_us > |
| lll->slave.window_widening_max_us) { |
| lll->slave.window_widening_event_us = |
| lll->slave.window_widening_max_us; |
| } |
| |
| /* current window size */ |
| lll->slave.window_size_event_us += |
| lll->slave.window_size_prepare_us; |
| lll->slave.window_size_prepare_us = 0; |
| |
| /* Start setting up Radio h/w */ |
| radio_reset(); |
| #if defined(CONFIG_BT_CTLR_TX_PWR_DYNAMIC_CONTROL) |
| radio_tx_power_set(lll->tx_pwr_lvl); |
| #else |
| radio_tx_power_set(RADIO_TXP_DEFAULT); |
| #endif /* CONFIG_BT_CTLR_TX_PWR_DYNAMIC_CONTROL */ |
| |
| lll_conn_rx_pkt_set(lll); |
| |
| radio_aa_set(lll->access_addr); |
| radio_crc_configure(((0x5bUL) | ((0x06UL) << 8) | ((0x00UL) << 16)), |
| (((u32_t)lll->crc_init[2] << 16) | |
| ((u32_t)lll->crc_init[1] << 8) | |
| ((u32_t)lll->crc_init[0]))); |
| |
| lll_chan_set(data_chan_use); |
| |
| radio_isr_set(lll_conn_isr_rx, lll); |
| |
| radio_tmr_tifs_set(EVENT_IFS_US); |
| |
| #if defined(CONFIG_BT_CTLR_PHY) |
| radio_switch_complete_and_tx(lll->phy_rx, 0, lll->phy_tx, |
| lll->phy_flags); |
| #else /* !CONFIG_BT_CTLR_PHY */ |
| radio_switch_complete_and_tx(0, 0, 0, 0); |
| #endif /* !CONFIG_BT_CTLR_PHY */ |
| |
| ticks_at_event = prepare_param->ticks_at_expire; |
| evt = HDR_LLL2EVT(lll); |
| ticks_at_event += lll_evt_offset_get(evt); |
| |
| ticks_at_start = ticks_at_event; |
| ticks_at_start += HAL_TICKER_US_TO_TICKS(EVENT_OVERHEAD_START_US); |
| |
| remainder = prepare_param->remainder; |
| remainder_us = radio_tmr_start(0, ticks_at_start, remainder); |
| |
| radio_tmr_aa_capture(); |
| radio_tmr_aa_save(0); |
| |
| hcto = remainder_us + EVENT_JITTER_US + (EVENT_JITTER_US << 2) + |
| (lll->slave.window_widening_event_us << 1) + |
| lll->slave.window_size_event_us; |
| |
| #if defined(CONFIG_BT_CTLR_PHY) |
| hcto += radio_rx_ready_delay_get(lll->phy_rx, 1); |
| hcto += addr_us_get(lll->phy_rx); |
| hcto += radio_rx_chain_delay_get(lll->phy_rx, 1); |
| #else /* !CONFIG_BT_CTLR_PHY */ |
| hcto += radio_rx_ready_delay_get(0, 0); |
| hcto += addr_us_get(0); |
| hcto += radio_rx_chain_delay_get(0, 0); |
| #endif /* !CONFIG_BT_CTLR_PHY */ |
| |
| radio_tmr_hcto_configure(hcto); |
| |
| #if defined(CONFIG_BT_CTLR_GPIO_LNA_PIN) |
| radio_gpio_lna_setup(); |
| |
| #if defined(CONFIG_BT_CTLR_PHY) |
| radio_gpio_pa_lna_enable(remainder_us + |
| radio_rx_ready_delay_get(lll->phy_rx, 1) - |
| CONFIG_BT_CTLR_GPIO_LNA_OFFSET); |
| #else /* !CONFIG_BT_CTLR_PHY */ |
| radio_gpio_pa_lna_enable(remainder_us + |
| radio_rx_ready_delay_get(0, 0) - |
| CONFIG_BT_CTLR_GPIO_LNA_OFFSET); |
| #endif /* !CONFIG_BT_CTLR_PHY */ |
| #endif /* CONFIG_BT_CTLR_GPIO_LNA_PIN */ |
| |
| #if defined(CONFIG_BT_CTLR_PROFILE_ISR) || \ |
| defined(CONFIG_BT_CTLR_GPIO_PA_PIN) |
| radio_tmr_end_capture(); |
| #endif /* CONFIG_BT_CTLR_PROFILE_ISR */ |
| |
| #if defined(CONFIG_BT_CTLR_CONN_RSSI) |
| radio_rssi_measure(); |
| #endif /* CONFIG_BT_CTLR_CONN_RSSI */ |
| |
| #if defined(CONFIG_BT_CTLR_XTAL_ADVANCED) && \ |
| (EVENT_OVERHEAD_PREEMPT_US <= EVENT_OVERHEAD_PREEMPT_MIN_US) |
| /* check if preempt to start has changed */ |
| if (lll_preempt_calc(evt, (TICKER_ID_CONN_BASE + lll->handle), |
| ticks_at_event)) { |
| radio_isr_set(lll_conn_isr_abort, lll); |
| radio_disable(); |
| } else |
| #endif /* CONFIG_BT_CTLR_XTAL_ADVANCED */ |
| { |
| u32_t ret; |
| |
| ret = lll_prepare_done(lll); |
| LL_ASSERT(!ret); |
| } |
| |
| DEBUG_RADIO_START_S(1); |
| |
| return 0; |
| } |