| /* |
| * Copyright (c) 2018 - 2019, 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 the copyright holder 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. |
| */ |
| |
| #include <nrfx.h> |
| |
| #if NRFX_CHECK(NRFX_DPPI_ENABLED) |
| |
| #include <nrfx_dppi.h> |
| |
| #define NRFX_LOG_MODULE DPPI |
| #include <nrfx_log.h> |
| |
| #if !defined(NRFX_DPPI_CHANNELS_USED) |
| // Default mask of DPPI channels reserved for other modules. |
| #define NRFX_DPPI_CHANNELS_USED 0x00000000uL |
| #endif |
| |
| #if !defined(NRFX_DPPI_GROUPS_USED) |
| // Default mask of DPPI groups reserved for other modules. |
| #define NRFX_DPPI_GROUPS_USED 0x00000000uL |
| #endif |
| |
| #define DPPI_AVAILABLE_CHANNELS_MASK \ |
| (((1UL << DPPI_CH_NUM) - 1) & (~NRFX_DPPI_CHANNELS_USED)) |
| |
| #define DPPI_AVAILABLE_GROUPS_MASK \ |
| (((1UL << DPPI_GROUP_NUM) - 1) & (~NRFX_DPPI_GROUPS_USED)) |
| |
| /** @brief Set bit at given position. */ |
| #define DPPI_BIT_SET(pos) (1uL << (pos)) |
| |
| static uint32_t m_allocated_channels; |
| |
| static uint8_t m_allocated_groups; |
| |
| __STATIC_INLINE bool channel_is_allocated(uint8_t channel) |
| { |
| return ((m_allocated_channels & DPPI_BIT_SET(channel)) != 0); |
| } |
| |
| __STATIC_INLINE bool group_is_allocated(nrf_dppi_channel_group_t group) |
| { |
| return ((m_allocated_groups & DPPI_BIT_SET(group)) != 0); |
| } |
| |
| void nrfx_dppi_free(void) |
| { |
| uint32_t mask = m_allocated_groups; |
| nrf_dppi_channel_group_t group = NRF_DPPI_CHANNEL_GROUP0; |
| |
| // Disable all channels |
| nrf_dppi_channels_disable(NRF_DPPIC, m_allocated_channels); |
| |
| // Clear all groups configurations |
| while (mask) |
| { |
| if (mask & DPPI_BIT_SET(group)) |
| { |
| nrf_dppi_group_clear(NRF_DPPIC, group); |
| mask &= ~DPPI_BIT_SET(group); |
| } |
| group++; |
| } |
| |
| // Clear all allocated channels. |
| m_allocated_channels = 0; |
| |
| // Clear all allocated groups. |
| m_allocated_groups = 0; |
| } |
| |
| nrfx_err_t nrfx_dppi_channel_alloc(uint8_t * p_channel) |
| { |
| nrfx_err_t err_code; |
| |
| // Get mask of available DPPI channels |
| uint32_t remaining_channels = DPPI_AVAILABLE_CHANNELS_MASK & ~(m_allocated_channels); |
| uint8_t channel = 0; |
| |
| if (!remaining_channels) |
| { |
| err_code = NRFX_ERROR_NO_MEM; |
| NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code)); |
| return err_code; |
| } |
| |
| // Find first free channel |
| while (!(remaining_channels & DPPI_BIT_SET(channel))) |
| { |
| channel++; |
| } |
| |
| m_allocated_channels |= DPPI_BIT_SET(channel); |
| *p_channel = channel; |
| |
| err_code = NRFX_SUCCESS; |
| NRFX_LOG_INFO("Allocated channel: %d.", channel); |
| return err_code; |
| } |
| |
| nrfx_err_t nrfx_dppi_channel_free(uint8_t channel) |
| { |
| nrfx_err_t err_code = NRFX_SUCCESS; |
| |
| if (!channel_is_allocated(channel)) |
| { |
| err_code = NRFX_ERROR_INVALID_PARAM; |
| } |
| else |
| { |
| // First disable this channel |
| nrf_dppi_channels_disable(NRF_DPPIC, DPPI_BIT_SET(channel)); |
| // Clear channel allocated indication. |
| m_allocated_channels &= ~DPPI_BIT_SET(channel); |
| } |
| NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code)); |
| return err_code; |
| } |
| |
| nrfx_err_t nrfx_dppi_channel_enable(uint8_t channel) |
| { |
| nrfx_err_t err_code = NRFX_SUCCESS; |
| |
| if (!channel_is_allocated(channel)) |
| { |
| err_code = NRFX_ERROR_INVALID_PARAM; |
| } |
| else |
| { |
| nrf_dppi_channels_enable(NRF_DPPIC, DPPI_BIT_SET(channel)); |
| } |
| NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code)); |
| return err_code; |
| } |
| |
| nrfx_err_t nrfx_dppi_channel_disable(uint8_t channel) |
| { |
| nrfx_err_t err_code = NRFX_SUCCESS; |
| |
| if (!channel_is_allocated(channel)) |
| { |
| err_code = NRFX_ERROR_INVALID_PARAM; |
| } |
| else |
| { |
| nrf_dppi_channels_disable(NRF_DPPIC, DPPI_BIT_SET(channel)); |
| err_code = NRFX_SUCCESS; |
| } |
| NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code)); |
| return err_code; |
| } |
| |
| nrfx_err_t nrfx_dppi_group_alloc(nrf_dppi_channel_group_t * p_group) |
| { |
| nrfx_err_t err_code; |
| |
| // Get mask of available DPPI groups |
| uint32_t remaining_groups = DPPI_AVAILABLE_GROUPS_MASK & ~(m_allocated_groups); |
| nrf_dppi_channel_group_t group = NRF_DPPI_CHANNEL_GROUP0; |
| |
| if (!remaining_groups) |
| { |
| err_code = NRFX_ERROR_NO_MEM; |
| NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code)); |
| return err_code; |
| } |
| |
| // Find first free group |
| while (!(remaining_groups & DPPI_BIT_SET(group))) |
| { |
| group++; |
| } |
| |
| m_allocated_groups |= DPPI_BIT_SET(group); |
| *p_group = group; |
| |
| err_code = NRFX_SUCCESS; |
| NRFX_LOG_INFO("Allocated channel: %d.", group); |
| return err_code; |
| } |
| |
| nrfx_err_t nrfx_dppi_group_free(nrf_dppi_channel_group_t group) |
| { |
| nrfx_err_t err_code = NRFX_SUCCESS; |
| |
| if (!group_is_allocated(group)) |
| { |
| err_code = NRFX_ERROR_INVALID_PARAM; |
| } |
| else |
| { |
| nrf_dppi_group_disable(NRF_DPPIC, group); |
| // Set bit value to zero at position corresponding to the group number. |
| m_allocated_groups &= ~DPPI_BIT_SET(group); |
| } |
| NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code)); |
| return err_code; |
| } |
| |
| nrfx_err_t nrfx_dppi_channel_include_in_group(uint8_t channel, |
| nrf_dppi_channel_group_t group) |
| { |
| nrfx_err_t err_code = NRFX_SUCCESS; |
| |
| if (!group_is_allocated(group) || !channel_is_allocated(channel)) |
| { |
| err_code = NRFX_ERROR_INVALID_PARAM; |
| } |
| else |
| { |
| nrf_dppi_channels_include_in_group(NRF_DPPIC, DPPI_BIT_SET(channel), group); |
| } |
| NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code)); |
| return err_code; |
| } |
| |
| nrfx_err_t nrfx_dppi_channel_remove_from_group(uint8_t channel, |
| nrf_dppi_channel_group_t group) |
| { |
| nrfx_err_t err_code = NRFX_SUCCESS; |
| |
| if (!group_is_allocated(group) || !channel_is_allocated(channel)) |
| { |
| err_code = NRFX_ERROR_INVALID_PARAM; |
| } |
| else |
| { |
| nrf_dppi_channels_remove_from_group(NRF_DPPIC, DPPI_BIT_SET(channel), group); |
| } |
| NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code)); |
| return err_code; |
| } |
| |
| nrfx_err_t nrfx_dppi_group_clear(nrf_dppi_channel_group_t group) |
| { |
| nrfx_err_t err_code = NRFX_SUCCESS; |
| |
| if (!group_is_allocated(group)) |
| { |
| err_code = NRFX_ERROR_INVALID_PARAM; |
| } |
| else |
| { |
| nrf_dppi_channels_remove_from_group(NRF_DPPIC, DPPI_AVAILABLE_CHANNELS_MASK, group); |
| } |
| NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code)); |
| return err_code; |
| } |
| |
| nrfx_err_t nrfx_dppi_group_enable(nrf_dppi_channel_group_t group) |
| { |
| nrfx_err_t err_code = NRFX_SUCCESS; |
| |
| if (!group_is_allocated(group)) |
| { |
| err_code = NRFX_ERROR_INVALID_PARAM; |
| } |
| else |
| { |
| nrf_dppi_group_enable(NRF_DPPIC, group); |
| } |
| NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code)); |
| return err_code; |
| } |
| |
| nrfx_err_t nrfx_dppi_group_disable(nrf_dppi_channel_group_t group) |
| { |
| nrfx_err_t err_code = NRFX_SUCCESS; |
| |
| if (!group_is_allocated(group)) |
| { |
| err_code = NRFX_ERROR_INVALID_PARAM; |
| } |
| else |
| { |
| nrf_dppi_group_disable(NRF_DPPIC, group); |
| } |
| NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code)); |
| return err_code; |
| } |
| |
| #endif // NRFX_CHECK(NRFX_DPPI_ENABLED) |