1 files changed, 534 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/modules/nrfx/drivers/src/nrfx_ppi.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/modules/nrfx/drivers/src/nrfx_ppi.c
new file mode 100644
index 0000000..067ba18
--- /dev/null
+++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/modules/nrfx/drivers/src/nrfx_ppi.c
@@ -0,0 +1,534 @@
+/**
+ * Copyright (c) 2015 - 2018, 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, except as embedded into a Nordic
+ *    Semiconductor ASA integrated circuit in a product or a software update for
+ *    such product, 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.
+ * 
+ * 4. This software, with or without modification, must only be used with a
+ *    Nordic Semiconductor ASA integrated circuit.
+ * 
+ * 5. Any software provided in binary form under this license must not be reverse
+ *    engineered, decompiled, modified and/or disassembled.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA 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_PPI_ENABLED)
+
+#include <nrfx_ppi.h>
+
+#define NRFX_LOG_MODULE_NAME PPI
+#include <nrfx_log.h>
+
+
+static uint32_t         m_channels_allocated; /**< Bitmap representing channels availability. 1 when a channel is allocated, 0 otherwise. */
+static uint8_t          m_groups_allocated;   /**< Bitmap representing groups availability. 1 when a group is allocated, 0 otherwise.*/
+
+
+/**
+ * @brief Compute a group mask (needed for driver internals, not used for NRF_PPI registers).
+ *
+ * @param[in] group Group number to transform to a mask.
+ *
+ * @retval Group mask.
+ */
+__STATIC_INLINE uint32_t group_to_mask(nrf_ppi_channel_group_t group)
+{
+    return (1uL << (uint32_t) group);
+}
+
+
+/**
+ * @brief Check whether a channel is a programmable channel and can be used by an application.
+ *
+ * @param[in] channel Channel to check.
+ *
+ * @retval true  The channel is a programmable application channel.
+ * @retval false The channel is used by a stack (for example SoftDevice) or is preprogrammed.
+ */
+__STATIC_INLINE bool is_programmable_app_channel(nrf_ppi_channel_t channel)
+{
+    return ((NRFX_PPI_PROG_APP_CHANNELS_MASK & nrfx_ppi_channel_to_mask(channel)) != 0);
+}
+
+
+/**
+ * @brief Check whether channels can be used by an application.
+ *
+ * @param[in] channel_mask Channel mask to check.
+ *
+ * @retval true  All specified channels can be used by an application.
+ * @retval false At least one specified channel is used by a stack (for example SoftDevice).
+ */
+__STATIC_INLINE bool are_app_channels(uint32_t channel_mask)
+{
+    //lint -e(587)
+    return ((~(NRFX_PPI_ALL_APP_CHANNELS_MASK) & channel_mask) == 0);
+}
+
+
+/**
+ * @brief Check whether a channel can be used by an application.
+ *
+ * @param[in] channel Channel to check.
+ *
+ * @retval true  The channel can be used by an application.
+ * @retval false The channel is used by a stack (for example SoftDevice).
+ */
+__STATIC_INLINE bool is_app_channel(nrf_ppi_channel_t channel)
+{
+    return are_app_channels(nrfx_ppi_channel_to_mask(channel));
+}
+
+
+/**
+ * @brief Check whether a channel group can be used by an application.
+ *
+ * @param[in] group Group to check.
+ *
+ * @retval true  The group is an application group.
+ * @retval false The group is not an application group (this group either does not exist or
+ *               it is used by a stack (for example SoftDevice)).
+ */
+__STATIC_INLINE bool is_app_group(nrf_ppi_channel_group_t group)
+{
+    return ((NRFX_PPI_ALL_APP_GROUPS_MASK & group_to_mask(group)) != 0);
+}
+
+
+/**
+ * @brief Check whether a channel is allocated.
+ *
+ * @param[in] channel_num  Channel number to check.
+ *
+ * @retval true  The channel is allocated.
+ * @retval false The channel is not allocated.
+ */
+__STATIC_INLINE bool is_allocated_channel(nrf_ppi_channel_t channel)
+{
+    return ((m_channels_allocated & nrfx_ppi_channel_to_mask(channel)) != 0);
+}
+
+
+/**
+ * @brief Set channel allocated indication.
+ *
+ * @param[in] channel_num Specifies the channel to set the "allocated" indication.
+ */
+__STATIC_INLINE void channel_allocated_set(nrf_ppi_channel_t channel)
+{
+    m_channels_allocated |= nrfx_ppi_channel_to_mask(channel);
+}
+
+
+/**
+ * @brief Clear channel allocated indication.
+ *
+ * @param[in] channel_num Specifies the channel to clear the "allocated" indication.
+ */
+__STATIC_INLINE void channel_allocated_clr(nrf_ppi_channel_t channel)
+{
+    m_channels_allocated &= ~nrfx_ppi_channel_to_mask(channel);
+}
+
+
+/**
+ * @brief Clear all allocated channels.
+ */
+__STATIC_INLINE void channel_allocated_clr_all(void)
+{
+    m_channels_allocated &= ~NRFX_PPI_ALL_APP_CHANNELS_MASK;
+}
+
+
+/**
+ * @brief Check whether a group is allocated.
+ *
+ * @param[in] group_num Group number to check.
+ *
+ * @retval true  The group is allocated.
+ *         false The group is not allocated.
+ */
+__STATIC_INLINE bool is_allocated_group(nrf_ppi_channel_group_t group)
+{
+    return ((m_groups_allocated & group_to_mask(group)) != 0);
+}
+
+
+/**
+ * @brief Set group allocated indication.
+ *
+ * @param[in] group_num Specifies the group to set the "allocated" indication.
+ */
+__STATIC_INLINE void group_allocated_set(nrf_ppi_channel_group_t group)
+{
+    m_groups_allocated |= group_to_mask(group);
+}
+
+
+/**
+ * @brief Clear group allocated indication.
+ *
+ * @param[in] group_num Specifies the group to clear the "allocated" indication.
+ */
+__STATIC_INLINE void group_allocated_clr(nrf_ppi_channel_group_t group)
+{
+    m_groups_allocated &= ~group_to_mask(group);
+}
+
+
+/**
+ * @brief Clear all allocated groups.
+ */
+__STATIC_INLINE void group_allocated_clr_all()
+{
+    m_groups_allocated &= ~NRFX_PPI_ALL_APP_GROUPS_MASK;
+}
+
+
+void nrfx_ppi_free_all(void)
+{
+    uint32_t mask = NRFX_PPI_ALL_APP_GROUPS_MASK;
+    nrf_ppi_channel_group_t group;
+
+    // Disable all channels and groups
+    nrf_ppi_channels_disable(NRFX_PPI_ALL_APP_CHANNELS_MASK);
+
+    for (group = NRF_PPI_CHANNEL_GROUP0; mask != 0; mask &= ~group_to_mask(group), group++)
+    {
+        if (mask & group_to_mask(group))
+        {
+            nrf_ppi_channel_group_clear(group);
+        }
+    }
+    channel_allocated_clr_all();
+    group_allocated_clr_all();
+}
+
+
+nrfx_err_t nrfx_ppi_channel_alloc(nrf_ppi_channel_t * p_channel)
+{
+    nrfx_err_t err_code = NRFX_SUCCESS;
+    nrf_ppi_channel_t channel;
+    uint32_t mask = 0;
+    err_code = NRFX_ERROR_NO_MEM;
+
+    mask = NRFX_PPI_PROG_APP_CHANNELS_MASK;
+    for (channel = NRF_PPI_CHANNEL0;
+         mask != 0;
+         mask &= ~nrfx_ppi_channel_to_mask(channel), channel++)
+    {
+        NRFX_CRITICAL_SECTION_ENTER();
+        if ((mask & nrfx_ppi_channel_to_mask(channel)) && (!is_allocated_channel(channel)))
+        {
+            channel_allocated_set(channel);
+            *p_channel = channel;
+            err_code   = NRFX_SUCCESS;
+        }
+        NRFX_CRITICAL_SECTION_EXIT();
+        if (err_code == NRFX_SUCCESS)
+        {
+            NRFX_LOG_INFO("Allocated channel: %d.", channel);
+            break;
+        }
+    }
+
+    NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code));
+    return err_code;
+}
+
+
+nrfx_err_t nrfx_ppi_channel_free(nrf_ppi_channel_t channel)
+{
+    nrfx_err_t err_code = NRFX_SUCCESS;
+
+    if (!is_programmable_app_channel(channel))
+    {
+        err_code = NRFX_ERROR_INVALID_PARAM;
+    }
+    else
+    {
+        // First disable this channel
+        nrf_ppi_channel_disable(channel);
+        NRFX_CRITICAL_SECTION_ENTER();
+        channel_allocated_clr(channel);
+        NRFX_CRITICAL_SECTION_EXIT();
+    }
+    NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code));
+    return err_code;
+}
+
+
+nrfx_err_t nrfx_ppi_channel_assign(nrf_ppi_channel_t channel, uint32_t eep, uint32_t tep)
+{
+    if ((uint32_t *)eep == NULL || (uint32_t *)tep == NULL)
+    {
+        return NRFX_ERROR_NULL;
+    }
+
+    nrfx_err_t err_code = NRFX_SUCCESS;
+
+    if (!is_programmable_app_channel(channel))
+    {
+        err_code = NRFX_ERROR_INVALID_PARAM;
+    }
+    else if (!is_allocated_channel(channel))
+    {
+        err_code = NRFX_ERROR_INVALID_STATE;
+    }
+    else
+    {
+        nrf_ppi_channel_endpoint_setup(channel, eep, tep);
+        NRFX_LOG_INFO("Assigned channel: %d, event end point: %x, task end point: %x.",
+                      channel,
+                      eep,
+                      tep);
+    }
+    NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code));
+    return err_code;
+}
+
+nrfx_err_t nrfx_ppi_channel_fork_assign(nrf_ppi_channel_t channel, uint32_t fork_tep)
+{
+    nrfx_err_t err_code = NRFX_SUCCESS;
+#ifdef PPI_FEATURE_FORKS_PRESENT
+    if (!is_programmable_app_channel(channel))
+    {
+        err_code = NRFX_ERROR_INVALID_PARAM;
+    }
+    else if (!is_allocated_channel(channel))
+    {
+        err_code = NRFX_ERROR_INVALID_STATE;
+    }
+    else
+    {
+        nrf_ppi_fork_endpoint_setup(channel, fork_tep);
+        NRFX_LOG_INFO("Fork assigned channel: %d, task end point: %d.", channel, fork_tep);
+    }
+    NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code));
+    return err_code;
+#else
+    err_code = NRFX_ERROR_NOT_SUPPORTED;
+    NRFX_LOG_WARNING("Function: %s, error code: %s.",
+                     __func__,
+                     NRFX_LOG_ERROR_STRING_GET(err_code));
+    return err_code;
+#endif
+}
+
+nrfx_err_t nrfx_ppi_channel_enable(nrf_ppi_channel_t channel)
+{
+    nrfx_err_t err_code = NRFX_SUCCESS;
+
+    if (!is_app_channel(channel))
+    {
+        err_code = NRFX_ERROR_INVALID_PARAM;
+    }
+    else if (is_programmable_app_channel(channel) && !is_allocated_channel(channel))
+    {
+        err_code = NRFX_ERROR_INVALID_STATE;
+    }
+    else
+    {
+        nrf_ppi_channel_enable(channel);
+    }
+    NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code));
+    return err_code;
+}
+
+
+nrfx_err_t nrfx_ppi_channel_disable(nrf_ppi_channel_t channel)
+{
+    nrfx_err_t err_code = NRFX_SUCCESS;
+
+    if (!is_app_channel(channel))
+    {
+        err_code = NRFX_ERROR_INVALID_PARAM;
+    }
+    else if (is_programmable_app_channel(channel) && !is_allocated_channel(channel))
+    {
+        err_code = NRFX_ERROR_INVALID_STATE;
+    }
+    else
+    {
+        nrf_ppi_channel_disable(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_ppi_group_alloc(nrf_ppi_channel_group_t * p_group)
+{
+    nrfx_err_t err_code;
+    uint32_t mask = 0;
+    nrf_ppi_channel_group_t group;
+
+    err_code = NRFX_ERROR_NO_MEM;
+
+    mask = NRFX_PPI_ALL_APP_GROUPS_MASK;
+    for (group = NRF_PPI_CHANNEL_GROUP0; mask != 0; mask &= ~group_to_mask(group), group++)
+    {
+        NRFX_CRITICAL_SECTION_ENTER();
+        if ((mask & group_to_mask(group)) && (!is_allocated_group(group)))
+        {
+            group_allocated_set(group);
+            *p_group = group;
+            err_code = NRFX_SUCCESS;
+        }
+        NRFX_CRITICAL_SECTION_EXIT();
+        if (err_code == NRFX_SUCCESS)
+        {
+            NRFX_LOG_INFO("Allocated group: %d.", group);
+            break;
+        }
+    }
+
+    NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code));
+    return err_code;
+}
+
+
+nrfx_err_t nrfx_ppi_group_free(nrf_ppi_channel_group_t group)
+{
+    nrfx_err_t err_code = NRFX_SUCCESS;
+
+    if (!is_app_group(group))
+    {
+        err_code = NRFX_ERROR_INVALID_PARAM;
+    }
+    if (!is_allocated_group(group))
+    {
+        err_code = NRFX_ERROR_INVALID_STATE;
+    }
+    else
+    {
+        nrf_ppi_group_disable(group);
+        NRFX_CRITICAL_SECTION_ENTER();
+        group_allocated_clr(group);
+        NRFX_CRITICAL_SECTION_EXIT();
+    }
+    NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code));
+    return err_code;
+}
+
+
+nrfx_err_t nrfx_ppi_group_enable(nrf_ppi_channel_group_t group)
+{
+    nrfx_err_t err_code = NRFX_SUCCESS;
+
+    if (!is_app_group(group))
+    {
+        err_code = NRFX_ERROR_INVALID_PARAM;
+    }
+    else if (!is_allocated_group(group))
+    {
+        err_code = NRFX_ERROR_INVALID_STATE;
+    }
+    else
+    {
+        nrf_ppi_group_enable(group);
+    }
+    NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code));
+    return err_code;
+}
+
+
+nrfx_err_t nrfx_ppi_group_disable(nrf_ppi_channel_group_t group)
+{
+    nrfx_err_t err_code = NRFX_SUCCESS;
+
+    if (!is_app_group(group))
+    {
+        err_code = NRFX_ERROR_INVALID_PARAM;
+    }
+    else
+    {
+        nrf_ppi_group_disable(group);
+    }
+    NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code));
+    return err_code;
+}
+
+nrfx_err_t nrfx_ppi_channels_remove_from_group(uint32_t                channel_mask,
+                                               nrf_ppi_channel_group_t group)
+{
+    nrfx_err_t err_code = NRFX_SUCCESS;
+
+    if (!is_app_group(group))
+    {
+        err_code = NRFX_ERROR_INVALID_PARAM;
+    }
+    else if (!is_allocated_group(group))
+    {
+        err_code = NRFX_ERROR_INVALID_STATE;
+    }
+    else if (!are_app_channels(channel_mask))
+    {
+        err_code = NRFX_ERROR_INVALID_PARAM;
+    }
+    else
+    {
+        NRFX_CRITICAL_SECTION_ENTER();
+        nrf_ppi_channels_remove_from_group(channel_mask, group);
+        NRFX_CRITICAL_SECTION_EXIT();
+    }
+    NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code));
+    return err_code;
+}
+
+nrfx_err_t nrfx_ppi_channels_include_in_group(uint32_t                channel_mask,
+                                              nrf_ppi_channel_group_t group)
+{
+    nrfx_err_t err_code = NRFX_SUCCESS;
+
+    if (!is_app_group(group))
+    {
+        err_code = NRFX_ERROR_INVALID_PARAM;
+    }
+    else if (!is_allocated_group(group))
+    {
+        err_code = NRFX_ERROR_INVALID_STATE;
+    }
+    else if (!are_app_channels(channel_mask))
+    {
+        err_code = NRFX_ERROR_INVALID_PARAM;
+    }
+    else
+    {
+        NRFX_CRITICAL_SECTION_ENTER();
+        nrf_ppi_channels_include_in_group(channel_mask, group);
+        NRFX_CRITICAL_SECTION_EXIT();
+    }
+    NRFX_LOG_INFO("Function: %s, error code: %s.", __func__, NRFX_LOG_ERROR_STRING_GET(err_code));
+    return err_code;
+}
+#endif // NRFX_CHECK(NRFX_PPI_ENABLED)