| |
| /* Copyright (c) 2017, Nordic Semiconductor ASA |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright notice, this |
| * list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * |
| * 3. Neither the name of Nordic Semiconductor ASA nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| /** |
| * @file |
| * This file implements requests to the driver triggered by the MAC layer through SWI. |
| * |
| */ |
| |
| #include "nrf_drv_radio802154_request.h" |
| |
| #include <assert.h> |
| #include <stdbool.h> |
| #include <stdint.h> |
| |
| #include "nrf_drv_radio802154_config.h" |
| #include "nrf_drv_radio802154_critical_section.h" |
| #include "nrf_drv_radio802154_debug.h" |
| #include "nrf_drv_radio802154_fsm.h" |
| #include "nrf_drv_radio802154_rx_buffer.h" |
| #include "nrf_drv_radio802154_swi.h" |
| #include "hal/nrf_radio.h" |
| |
| #include <cmsis/core_cmFunc.h> |
| #include <cmsis/core_cm4.h> |
| |
| #define CMSIS_IRQ_NUM_VECTACTIVE_DIFF 16 |
| |
| /** Check if active vector priority is high enough to call requests directly. |
| * |
| * @retval true Active vector priority is greater or equal to SWI priority. |
| * @retval false Active vector priority is lower than SWI priority. |
| */ |
| static bool active_vector_priority_is_high(void) |
| { |
| uint32_t active_vector_id = (SCB->ICSR & SCB_ICSR_VECTACTIVE_Msk) >> SCB_ICSR_VECTACTIVE_Pos; |
| IRQn_Type irq_number; |
| uint32_t active_priority; |
| |
| // Check if this function is called from main thread. |
| if (active_vector_id == 0) |
| { |
| return false; |
| } |
| |
| assert(active_vector_id >= CMSIS_IRQ_NUM_VECTACTIVE_DIFF); |
| |
| irq_number = (IRQn_Type)(active_vector_id - CMSIS_IRQ_NUM_VECTACTIVE_DIFF); |
| active_priority = NVIC_GetPriority(irq_number); |
| |
| return active_priority <= RADIO_NOTIFICATION_SWI_PRIORITY; |
| } |
| |
| void nrf_drv_radio802154_request_init(void) |
| { |
| nrf_drv_radio802154_swi_init(); |
| } |
| |
| bool nrf_drv_radio802154_request_sleep(void) |
| { |
| bool result = false; |
| |
| if (active_vector_priority_is_high()) |
| { |
| nrf_drv_radio802154_critical_section_enter(); |
| result = nrf_drv_radio802154_fsm_sleep(); |
| nrf_drv_radio802154_critical_section_exit(); |
| } |
| else |
| { |
| nrf_drv_radio802154_swi_sleep(&result); |
| } |
| |
| return result; |
| } |
| |
| bool nrf_drv_radio802154_request_receive(uint8_t channel) |
| { |
| bool result = false; |
| |
| if (active_vector_priority_is_high()) |
| { |
| nrf_drv_radio802154_critical_section_enter(); |
| result = nrf_drv_radio802154_fsm_receive(channel); |
| nrf_drv_radio802154_critical_section_exit(); |
| } |
| else |
| { |
| nrf_drv_radio802154_swi_receive(channel, &result); |
| } |
| |
| return result; |
| } |
| |
| bool nrf_drv_radio802154_request_transmit(const uint8_t * p_data, uint8_t channel, int8_t power, bool cca) |
| { |
| bool result = false; |
| |
| if (active_vector_priority_is_high()) |
| { |
| nrf_drv_radio802154_critical_section_enter(); |
| result = nrf_drv_radio802154_fsm_transmit(p_data, channel, power, cca); |
| nrf_drv_radio802154_critical_section_exit(); |
| } |
| else |
| { |
| nrf_drv_radio802154_swi_transmit(p_data, channel, power, cca, &result); |
| } |
| |
| return result; |
| } |
| |
| bool nrf_drv_radio802154_request_energy_detection(uint8_t channel, uint32_t time_us) |
| { |
| bool result = false; |
| |
| if (active_vector_priority_is_high()) |
| { |
| nrf_drv_radio802154_critical_section_enter(); |
| result = nrf_drv_radio802154_fsm_energy_detection(channel, time_us); |
| nrf_drv_radio802154_critical_section_exit(); |
| } |
| else |
| { |
| nrf_drv_radio802154_swi_energy_detection(channel, time_us, &result); |
| } |
| |
| return result; |
| } |
| |
| void nrf_drv_radio802154_request_buffer_free(uint8_t * p_data) |
| { |
| if (active_vector_priority_is_high()) |
| { |
| nrf_drv_radio802154_critical_section_enter(); |
| nrf_drv_radio802154_fsm_notify_buffer_free((rx_buffer_t *)p_data); |
| nrf_drv_radio802154_critical_section_exit(); |
| } |
| else |
| { |
| nrf_drv_radio802154_swi_buffer_free(p_data); |
| } |
| } |