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- /**
- * Copyright (c) 2016 - 2020, 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 "sdk_common.h"
- #if NRF_MODULE_ENABLED(APP_USBD_CDC_ACM)
- #include "app_usbd_cdc_acm.h"
- #include <inttypes.h>
- /**
- * @defgroup app_usbd_cdc_acm_internal CDC ACM internals
- * @{
- * @ingroup app_usbd_cdc
- * @internal
- */
- #define NRF_LOG_MODULE_NAME cdc_acm
- #if APP_USBD_CDC_ACM_CONFIG_LOG_ENABLED
- #define NRF_LOG_LEVEL APP_USBD_CDC_ACM_CONFIG_LOG_LEVEL
- #define NRF_LOG_INFO_COLOR APP_USBD_CDC_ACM_CONFIG_INFO_COLOR
- #define NRF_LOG_DEBUG_COLOR APP_USBD_CDC_ACM_CONFIG_DEBUG_COLOR
- #else //APP_USBD_CDC_ACM_CONFIG_LOG_ENABLED
- #define NRF_LOG_LEVEL 0
- #endif //APP_USBD_CDC_ACM_CONFIG_LOG_ENABLED
- #include "nrf_log.h"
- NRF_LOG_MODULE_REGISTER();
- #define APP_USBD_CDC_ACM_COMM_IFACE_IDX 0 /**< CDC ACM class comm interface index. */
- #define APP_USBD_CDC_ACM_DATA_IFACE_IDX 1 /**< CDC ACM class data interface index. */
- #define APP_USBD_CDC_ACM_COMM_EPIN_IDX 0 /**< CDC ACM comm class endpoint IN index. */
- #define APP_USBD_CDC_ACM_DATA_EPIN_IDX 0 /**< CDC ACM data class endpoint IN index. */
- #define APP_USBD_CDC_ACM_DATA_EPOUT_IDX 1 /**< CDC ACM data class endpoint OUT index. */
- /**
- * @brief Auxiliary function to access cdc_acm class instance data.
- *
- * @param[in] p_inst Class instance data.
- *
- * @return CDC ACM class instance.
- */
- static inline app_usbd_cdc_acm_t const * cdc_acm_get(app_usbd_class_inst_t const * p_inst)
- {
- ASSERT(p_inst != NULL);
- return (app_usbd_cdc_acm_t const *)p_inst;
- }
- /**
- * @brief Auxiliary function to access cdc_acm class context data.
- *
- * @param[in] p_cdc_acm CDC ACM class instance data.
- *
- * @return CDC ACM class instance context.
- */
- static inline app_usbd_cdc_acm_ctx_t * cdc_acm_ctx_get(app_usbd_cdc_acm_t const * p_cdc_acm)
- {
- ASSERT(p_cdc_acm != NULL);
- ASSERT(p_cdc_acm->specific.p_data != NULL);
- return &p_cdc_acm->specific.p_data->ctx;
- }
- /**
- * @brief User event handler.
- *
- * @param[in] p_inst Class instance.
- * @param[in] event user Event type.
- */
- static inline void user_event_handler(app_usbd_class_inst_t const * p_inst,
- app_usbd_cdc_acm_user_event_t event)
- {
- app_usbd_cdc_acm_t const * p_cdc_acm = cdc_acm_get(p_inst);
- if (p_cdc_acm->specific.inst.user_ev_handler != NULL)
- {
- p_cdc_acm->specific.inst.user_ev_handler(p_inst, event);
- }
- }
- /**
- * @brief Auxiliary function to access CDC ACM COMM IN endpoint address.
- *
- * @param[in] p_inst Class instance data.
- *
- * @return IN endpoint address.
- */
- static inline nrf_drv_usbd_ep_t comm_ep_in_addr_get(app_usbd_class_inst_t const * p_inst)
- {
- app_usbd_class_iface_conf_t const * class_iface;
- class_iface = app_usbd_class_iface_get(p_inst, APP_USBD_CDC_ACM_COMM_IFACE_IDX);
- app_usbd_class_ep_conf_t const * ep_cfg;
- ep_cfg = app_usbd_class_iface_ep_get(class_iface, APP_USBD_CDC_ACM_COMM_EPIN_IDX);
- return app_usbd_class_ep_address_get(ep_cfg);
- }
- /**
- * @brief Auxiliary function to access CDC ACM DATA IN endpoint address.
- *
- * @param[in] p_inst Class instance data.
- *
- * @return IN endpoint address.
- */
- static inline nrf_drv_usbd_ep_t data_ep_in_addr_get(app_usbd_class_inst_t const * p_inst)
- {
- app_usbd_class_iface_conf_t const * class_iface;
- class_iface = app_usbd_class_iface_get(p_inst, APP_USBD_CDC_ACM_DATA_IFACE_IDX);
- app_usbd_class_ep_conf_t const * ep_cfg;
- ep_cfg = app_usbd_class_iface_ep_get(class_iface, APP_USBD_CDC_ACM_DATA_EPIN_IDX);
- return app_usbd_class_ep_address_get(ep_cfg);
- }
- /**
- * @brief Auxiliary function to access CDC ACM DATA OUT endpoint address.
- *
- * @param[in] p_inst Class instance data.
- *
- * @return OUT endpoint address.
- */
- static inline nrf_drv_usbd_ep_t data_ep_out_addr_get(app_usbd_class_inst_t const * p_inst)
- {
- app_usbd_class_iface_conf_t const * class_iface;
- class_iface = app_usbd_class_iface_get(p_inst, APP_USBD_CDC_ACM_DATA_IFACE_IDX);
- app_usbd_class_ep_conf_t const * ep_cfg;
- ep_cfg = app_usbd_class_iface_ep_get(class_iface, APP_USBD_CDC_ACM_DATA_EPOUT_IDX);
- return app_usbd_class_ep_address_get(ep_cfg);
- }
- /**
- * @brief Internal SETUP standard IN request handler.
- *
- * @param[in] p_inst Generic class instance.
- * @param[in] p_setup_ev Setup event.
- *
- * @return Standard error code.
- */
- static ret_code_t setup_req_std_in(app_usbd_class_inst_t const * p_inst,
- app_usbd_setup_evt_t const * p_setup_ev)
- {
- /* Only Get Descriptor standard IN request is supported by CDC class */
- if ((app_usbd_setup_req_rec(p_setup_ev->setup.bmRequestType) == APP_USBD_SETUP_REQREC_INTERFACE)
- &&
- (p_setup_ev->setup.bRequest == APP_USBD_SETUP_STDREQ_GET_DESCRIPTOR))
- {
- size_t dsc_len = 0;
- size_t max_size;
- uint8_t * p_trans_buff = app_usbd_core_setup_transfer_buff_get(&max_size);
- /* Try to find descriptor in class internals*/
- ret_code_t ret = app_usbd_class_descriptor_find(
- p_inst,
- p_setup_ev->setup.wValue.hb,
- p_setup_ev->setup.wValue.lb,
- p_trans_buff,
- &dsc_len);
- if (ret != NRF_ERROR_NOT_FOUND)
- {
- ASSERT(dsc_len < NRF_DRV_USBD_EPSIZE);
- return app_usbd_core_setup_rsp(&(p_setup_ev->setup), p_trans_buff, dsc_len);
- }
- }
- return NRF_ERROR_NOT_SUPPORTED;
- }
- /**
- * @brief Internal SETUP standard OUT request handler.
- *
- * @param[in] p_inst Generic class instance.
- * @param[in] p_setup_ev Setup event.
- *
- * @return Standard error code.
- */
- static ret_code_t setup_req_std_out(app_usbd_class_inst_t const * p_inst,
- app_usbd_setup_evt_t const * p_setup_ev)
- {
- switch (p_setup_ev->setup.bRequest)
- {
- default:
- break;
- }
- return NRF_ERROR_NOT_SUPPORTED;
- }
- /**
- * @brief Internal SETUP class IN request handler.
- *
- * @param[in] p_inst Generic class instance.
- * @param[in] p_setup_ev Setup event.
- *
- * @return Standard error code.
- */
- static ret_code_t setup_req_class_in(app_usbd_class_inst_t const * p_inst,
- app_usbd_setup_evt_t const * p_setup_ev)
- {
- app_usbd_cdc_acm_t const * p_cdc_acm = cdc_acm_get(p_inst);
- app_usbd_cdc_acm_ctx_t * p_cdc_acm_ctx = cdc_acm_ctx_get(p_cdc_acm);
- switch (p_setup_ev->setup.bRequest)
- {
- case APP_USBD_CDC_REQ_GET_LINE_CODING:
- {
- if (p_setup_ev->setup.wLength.w != sizeof(app_usbd_cdc_line_coding_t))
- {
- return NRF_ERROR_NOT_SUPPORTED;
- }
- return app_usbd_core_setup_rsp(&p_setup_ev->setup,
- &p_cdc_acm_ctx->line_coding,
- sizeof(app_usbd_cdc_line_coding_t));
- }
- default:
- break;
- }
- return NRF_ERROR_NOT_SUPPORTED;
- }
- /**
- * @brief Class specific OUT request data callback.
- *
- * @param status Endpoint status.
- * @param p_context Context of transfer (set by @ref app_usbd_core_setup_data_handler_set).
- *
- * @return Standard error code.
- */
- static ret_code_t cdc_acm_req_out_data_cb(nrf_drv_usbd_ep_status_t status, void * p_context)
- {
- if (status != NRF_USBD_EP_OK)
- {
- return NRF_ERROR_INTERNAL;
- }
- app_usbd_cdc_acm_t const * p_cdc_acm = p_context;
- app_usbd_cdc_acm_ctx_t * p_cdc_acm_ctx = cdc_acm_ctx_get(p_cdc_acm);
- switch (p_cdc_acm_ctx->request.type)
- {
- case APP_USBD_CDC_REQ_SET_LINE_CODING:
- {
- memcpy(&p_cdc_acm_ctx->line_coding,
- &p_cdc_acm_ctx->request.payload.line_coding,
- sizeof(app_usbd_cdc_line_coding_t));
- NRF_LOG_INFO("REQ_SET_LINE_CODING: baudrate: %"PRIu32", databits: %u, "
- "format: %u, parity: %u",
- uint32_decode(p_cdc_acm_ctx->line_coding.dwDTERate),
- p_cdc_acm_ctx->line_coding.bDataBits,
- p_cdc_acm_ctx->line_coding.bCharFormat,
- p_cdc_acm_ctx->line_coding.bParityType);
- break;
- }
- default:
- return NRF_ERROR_NOT_SUPPORTED;
- }
- return NRF_SUCCESS;
- }
- /**
- * @brief Class specific request data stage setup.
- *
- * @param[in] p_inst Generic class instance.
- * @param[in] p_setup_ev Setup event.
- *
- * @return Standard error code.
- */
- static ret_code_t cdc_acm_req_out_datastage(app_usbd_class_inst_t const * p_inst,
- app_usbd_setup_evt_t const * p_setup_ev)
- {
- app_usbd_cdc_acm_t const * p_cdc_acm = cdc_acm_get(p_inst);
- app_usbd_cdc_acm_ctx_t * p_cdc_acm_ctx = cdc_acm_ctx_get(p_cdc_acm);
- p_cdc_acm_ctx->request.type = p_setup_ev->setup.bRequest;
- p_cdc_acm_ctx->request.len = p_setup_ev->setup.wLength.w;
- /*Request setup data*/
- NRF_DRV_USBD_TRANSFER_OUT(transfer,
- &p_cdc_acm_ctx->request.payload,
- p_cdc_acm_ctx->request.len);
- ret_code_t ret;
- CRITICAL_REGION_ENTER();
- ret = app_usbd_ep_transfer(NRF_DRV_USBD_EPOUT0, &transfer);
- if (ret == NRF_SUCCESS)
- {
- const app_usbd_core_setup_data_handler_desc_t desc = {
- .handler = cdc_acm_req_out_data_cb,
- .p_context = (void*)p_cdc_acm
- };
- ret = app_usbd_core_setup_data_handler_set(NRF_DRV_USBD_EPOUT0, &desc);
- }
- CRITICAL_REGION_EXIT();
- return ret;
- }
- /**
- * @brief Reset port to default state.
- *
- * @param p_inst Generic class instance.
- */
- static void cdc_acm_reset_port(app_usbd_class_inst_t const * p_inst)
- {
- app_usbd_cdc_acm_t const * p_cdc_acm = cdc_acm_get(p_inst);
- app_usbd_cdc_acm_ctx_t * p_cdc_acm_ctx = cdc_acm_ctx_get(p_cdc_acm);
- p_cdc_acm_ctx->line_state = 0;
- // Set rx transfers configuration to default state.
- p_cdc_acm_ctx->rx_transfer[0].p_buf = NULL;
- p_cdc_acm_ctx->rx_transfer[1].p_buf = NULL;
- p_cdc_acm_ctx->bytes_left = 0;
- p_cdc_acm_ctx->bytes_read = 0;
- p_cdc_acm_ctx->last_read = 0;
- p_cdc_acm_ctx->cur_read = 0;
- p_cdc_acm_ctx->p_copy_pos = p_cdc_acm_ctx->internal_rx_buf;
- }
- /**
- * @brief Internal SETUP class OUT request handler.
- *
- * @param[in] p_inst Generic class instance.
- * @param[in] p_setup_ev Setup event.
- *
- * @return Standard error code.
- */
- static ret_code_t setup_req_class_out(app_usbd_class_inst_t const * p_inst,
- app_usbd_setup_evt_t const * p_setup_ev)
- {
- app_usbd_cdc_acm_t const * p_cdc_acm = cdc_acm_get(p_inst);
- app_usbd_cdc_acm_ctx_t * p_cdc_acm_ctx = cdc_acm_ctx_get(p_cdc_acm);
- switch (p_setup_ev->setup.bRequest)
- {
- case APP_USBD_CDC_REQ_SET_LINE_CODING:
- {
- if (p_setup_ev->setup.wLength.w != sizeof(app_usbd_cdc_line_coding_t))
- {
- return NRF_ERROR_NOT_SUPPORTED;
- }
- return cdc_acm_req_out_datastage(p_inst, p_setup_ev);
- }
- case APP_USBD_CDC_REQ_SET_CONTROL_LINE_STATE:
- {
- if (p_setup_ev->setup.wLength.w != 0)
- {
- return NRF_ERROR_NOT_SUPPORTED;
- }
- NRF_LOG_INFO("REQ_SET_CONTROL_LINE_STATE: 0x%x", p_setup_ev->setup.wValue.w);
- bool old_dtr = (p_cdc_acm_ctx->line_state & APP_USBD_CDC_ACM_LINE_STATE_DTR) ?
- true : false;
- p_cdc_acm_ctx->line_state = p_setup_ev->setup.wValue.w;
- bool new_dtr = (p_cdc_acm_ctx->line_state & APP_USBD_CDC_ACM_LINE_STATE_DTR) ?
- true : false;
- if (old_dtr == new_dtr)
- {
- return NRF_SUCCESS;
- }
- const app_usbd_cdc_acm_user_event_t ev = new_dtr ?
- APP_USBD_CDC_ACM_USER_EVT_PORT_OPEN : APP_USBD_CDC_ACM_USER_EVT_PORT_CLOSE;
- user_event_handler(p_inst, ev);
- if (!new_dtr)
- {
- /*Abort DATA endpoints on port close */
- nrf_drv_usbd_ep_t ep;
- ep = data_ep_in_addr_get(p_inst);
- nrf_drv_usbd_ep_abort(ep);
- ep = data_ep_out_addr_get(p_inst);
- nrf_drv_usbd_ep_abort(ep);
- // Set rx transfers configuration to default state.
- p_cdc_acm_ctx->rx_transfer[0].p_buf = NULL;
- p_cdc_acm_ctx->rx_transfer[1].p_buf = NULL;
- p_cdc_acm_ctx->bytes_left = 0;
- p_cdc_acm_ctx->bytes_read = 0;
- p_cdc_acm_ctx->last_read = 0;
- p_cdc_acm_ctx->cur_read = 0;
- p_cdc_acm_ctx->p_copy_pos = p_cdc_acm_ctx->internal_rx_buf;
- }
- return NRF_SUCCESS;
- }
- default:
- break;
- }
- return NRF_ERROR_NOT_SUPPORTED;
- }
- /**
- * @brief Control endpoint handler.
- *
- * @param[in] p_inst Generic class instance.
- * @param[in] p_setup_ev Setup event.
- *
- * @return Standard error code.
- */
- static ret_code_t setup_event_handler(app_usbd_class_inst_t const * p_inst,
- app_usbd_setup_evt_t const * p_setup_ev)
- {
- ASSERT(p_inst != NULL);
- ASSERT(p_setup_ev != NULL);
- if (app_usbd_setup_req_dir(p_setup_ev->setup.bmRequestType) == APP_USBD_SETUP_REQDIR_IN)
- {
- switch (app_usbd_setup_req_typ(p_setup_ev->setup.bmRequestType))
- {
- case APP_USBD_SETUP_REQTYPE_STD:
- return setup_req_std_in(p_inst, p_setup_ev);
- case APP_USBD_SETUP_REQTYPE_CLASS:
- return setup_req_class_in(p_inst, p_setup_ev);
- default:
- break;
- }
- }
- else /*APP_USBD_SETUP_REQDIR_OUT*/
- {
- switch (app_usbd_setup_req_typ(p_setup_ev->setup.bmRequestType))
- {
- case APP_USBD_SETUP_REQTYPE_STD:
- return setup_req_std_out(p_inst, p_setup_ev);
- case APP_USBD_SETUP_REQTYPE_CLASS:
- return setup_req_class_out(p_inst, p_setup_ev);
- default:
- break;
- }
- }
- return NRF_ERROR_NOT_SUPPORTED;
- }
- /**
- * @brief CDC ACM consumer.
- *
- * @note See @ref nrf_drv_usbd_consumer_t
- */
- static bool cdc_acm_consumer(nrf_drv_usbd_ep_transfer_t * p_next,
- void * p_context,
- size_t ep_size,
- size_t data_size)
- {
- app_usbd_cdc_acm_ctx_t * p_cdc_acm_ctx = (app_usbd_cdc_acm_ctx_t *) p_context;
- p_next->size = data_size;
- if (data_size <= p_cdc_acm_ctx->rx_transfer[0].read_left)
- {
- p_next->p_data.rx = p_cdc_acm_ctx->rx_transfer[0].p_buf;
- p_cdc_acm_ctx->rx_transfer[0].p_buf += data_size;
- p_cdc_acm_ctx->bytes_read += data_size;
- p_cdc_acm_ctx->rx_transfer[0].read_left -= data_size;
- NRF_LOG_DEBUG("Received %d bytes. Space left in user buffer: %d bytes.",
- data_size,
- p_cdc_acm_ctx->rx_transfer[0].read_left);
- return (p_cdc_acm_ctx->rx_transfer[0].read_left) != 0;
- }
- else
- {
- p_next->p_data.rx = p_cdc_acm_ctx->internal_rx_buf;
- p_cdc_acm_ctx->cur_read = data_size;
- NRF_LOG_DEBUG("Received %d bytes. Stored in internal buffer.", data_size);
- return false;
- }
- }
- /**
- * @brief CDC ACM single transfer consumer.
- *
- * This function finalizes transfer after any received block.
- *
- * @note See @ref nrf_drv_usbd_consumer_t
- */
- static bool cdc_acm_single_shoot_consumer(nrf_drv_usbd_ep_transfer_t * p_next,
- void * p_context,
- size_t ep_size,
- size_t data_size)
- {
- app_usbd_cdc_acm_ctx_t * p_cdc_acm_ctx = (app_usbd_cdc_acm_ctx_t *) p_context;
- p_next->size = data_size;
- if (data_size <= p_cdc_acm_ctx->rx_transfer[0].read_left)
- {
- p_next->p_data.rx = p_cdc_acm_ctx->rx_transfer[0].p_buf;
- p_cdc_acm_ctx->bytes_read = data_size;
- p_cdc_acm_ctx->rx_transfer[0].read_left = data_size;
- NRF_LOG_DEBUG("Received %d bytes. Space left in user buffer: %d bytes.",
- data_size,
- p_cdc_acm_ctx->rx_transfer[0].read_left);
- }
- else
- {
- p_next->p_data.rx = p_cdc_acm_ctx->internal_rx_buf;
- p_cdc_acm_ctx->cur_read = data_size;
- NRF_LOG_DEBUG("Received %d bytes. Stored in internal buffer.", data_size);
- }
- return false;
- }
- /**
- * @brief Manage switching between user buffers and copying data from internal buffer.
- *
- * @param p_inst Generic USB class instance.
- *
- * @return Standard error code.
- */
- static ret_code_t cdc_acm_rx_block_finished(app_usbd_class_inst_t const * p_inst)
- {
- app_usbd_cdc_acm_t const * p_cdc_acm = cdc_acm_get(p_inst);
- app_usbd_cdc_acm_ctx_t * p_cdc_acm_ctx = cdc_acm_ctx_get(p_cdc_acm);
- nrf_drv_usbd_ep_t ep = data_ep_out_addr_get(p_inst);
- nrf_drv_usbd_handler_desc_t handler_desc = {
- .handler.consumer = cdc_acm_consumer,
- .p_context = p_cdc_acm_ctx
- };
- if (p_cdc_acm_ctx->rx_transfer[0].read_left == 0) // Buffer completely filled by consumer
- {
- p_cdc_acm_ctx->last_read = p_cdc_acm_ctx->bytes_read;
- p_cdc_acm_ctx->bytes_read = 0;
- p_cdc_acm_ctx->bytes_left = 0;
- if (p_cdc_acm_ctx->rx_transfer[1].p_buf != NULL)
- {
- p_cdc_acm_ctx->rx_transfer[0] = p_cdc_acm_ctx->rx_transfer[1];
- p_cdc_acm_ctx->rx_transfer[1].p_buf = NULL;
- return app_usbd_ep_handled_transfer(ep, &handler_desc);
- }
- else
- {
- p_cdc_acm_ctx->rx_transfer[0].p_buf = NULL;
- return NRF_SUCCESS;
- }
- }
- size_t bytes_read = p_cdc_acm_ctx->cur_read;
- size_t bytes_to_cpy = bytes_read;
- if (bytes_read > p_cdc_acm_ctx->rx_transfer[0].read_left)
- {
- bytes_to_cpy = p_cdc_acm_ctx->rx_transfer[0].read_left;
- }
- memcpy(p_cdc_acm_ctx->rx_transfer[0].p_buf,
- p_cdc_acm_ctx->internal_rx_buf,
- bytes_to_cpy);
- // First buffer is full
- p_cdc_acm_ctx->last_read = p_cdc_acm_ctx->bytes_read + bytes_to_cpy;
- p_cdc_acm_ctx->bytes_read = 0;
- p_cdc_acm_ctx->bytes_left = bytes_read - bytes_to_cpy;
- p_cdc_acm_ctx->p_copy_pos = p_cdc_acm_ctx->internal_rx_buf + bytes_to_cpy;
- if (p_cdc_acm_ctx->rx_transfer[1].p_buf != NULL)
- {
- // If there is second transfer, copy it to first
- p_cdc_acm_ctx->rx_transfer[0] = p_cdc_acm_ctx->rx_transfer[1];
- p_cdc_acm_ctx->rx_transfer[1].p_buf = NULL;
- while (p_cdc_acm_ctx->bytes_left > 0)
- {
- if (p_cdc_acm_ctx->bytes_left >= p_cdc_acm_ctx->rx_transfer[0].read_left)
- {
- // If there are enough bytes left in internal buffer to completely fill next transfer,
- // we call user event handler to obtain next buffer and continue double buffering.
- memcpy(p_cdc_acm_ctx->rx_transfer[0].p_buf,
- p_cdc_acm_ctx->p_copy_pos,
- p_cdc_acm_ctx->rx_transfer[0].read_left);
- p_cdc_acm_ctx->bytes_left -= p_cdc_acm_ctx->rx_transfer[0].read_left;
- p_cdc_acm_ctx->p_copy_pos += p_cdc_acm_ctx->rx_transfer[0].read_left;
- p_cdc_acm_ctx->last_read = p_cdc_acm_ctx->rx_transfer[0].read_left;
- user_event_handler(p_inst, APP_USBD_CDC_ACM_USER_EVT_RX_DONE);
- if (p_cdc_acm_ctx->rx_transfer[1].p_buf != NULL)
- {
- p_cdc_acm_ctx->rx_transfer[0] = p_cdc_acm_ctx->rx_transfer[1];
- p_cdc_acm_ctx->rx_transfer[1].p_buf = NULL;
- }
- else
- {
- // If user does not specify a second buffer, all data transfers are done
- // and data left in internal buffer is lost.
- p_cdc_acm_ctx->rx_transfer[0].p_buf = NULL;
- break;
- }
- }
- else
- {
- memcpy(p_cdc_acm_ctx->rx_transfer[0].p_buf,
- p_cdc_acm_ctx->p_copy_pos,
- p_cdc_acm_ctx->bytes_left);
- p_cdc_acm_ctx->bytes_read = p_cdc_acm_ctx->bytes_left;
- p_cdc_acm_ctx->rx_transfer[0].read_left -= p_cdc_acm_ctx->bytes_left;
- p_cdc_acm_ctx->rx_transfer[0].p_buf += p_cdc_acm_ctx->bytes_left;
- break;
- }
- }
- }
- else
- {
- p_cdc_acm_ctx->rx_transfer[0].p_buf = NULL;
- }
- if (p_cdc_acm_ctx->rx_transfer[0].p_buf != NULL)
- {
- return app_usbd_ep_handled_transfer(ep, &handler_desc);
- }
- return NRF_SUCCESS;
- }
- /**
- * @brief Class specific endpoint transfer handler.
- *
- * @param[in] p_inst Generic class instance.
- * @param[in] p_setup_ev Setup event.
- *
- * @return Standard error code.
- */
- static ret_code_t cdc_acm_endpoint_ev(app_usbd_class_inst_t const * p_inst,
- app_usbd_complex_evt_t const * p_event)
- {
- if (comm_ep_in_addr_get(p_inst) == p_event->drv_evt.data.eptransfer.ep)
- {
- NRF_LOG_INFO("EPIN_COMM: notify");
- return NRF_SUCCESS;
- }
- ret_code_t ret;
- if (NRF_USBD_EPIN_CHECK(p_event->drv_evt.data.eptransfer.ep))
- {
- switch (p_event->drv_evt.data.eptransfer.status)
- {
- case NRF_USBD_EP_OK:
- NRF_LOG_INFO("EPIN_DATA: %02x done", p_event->drv_evt.data.eptransfer.ep);
- user_event_handler(p_inst, APP_USBD_CDC_ACM_USER_EVT_TX_DONE);
- return NRF_SUCCESS;
- case NRF_USBD_EP_ABORTED:
- return NRF_SUCCESS;
- default:
- return NRF_ERROR_INTERNAL;
- }
- }
- if (NRF_USBD_EPOUT_CHECK(p_event->drv_evt.data.eptransfer.ep))
- {
- switch (p_event->drv_evt.data.eptransfer.status)
- {
- case NRF_USBD_EP_OK:
- ret = cdc_acm_rx_block_finished(p_inst);
- NRF_LOG_INFO("EPOUT_DATA: %02x done", p_event->drv_evt.data.eptransfer.ep);
- user_event_handler(p_inst, APP_USBD_CDC_ACM_USER_EVT_RX_DONE);
- return ret;
- case NRF_USBD_EP_WAITING:
- case NRF_USBD_EP_ABORTED:
- return NRF_SUCCESS;
- default:
- return NRF_ERROR_INTERNAL;
- }
- }
- return NRF_ERROR_NOT_SUPPORTED;
- }
- /**
- * @brief @ref app_usbd_class_methods_t::event_handler
- */
- static ret_code_t cdc_acm_event_handler(app_usbd_class_inst_t const * p_inst,
- app_usbd_complex_evt_t const * p_event)
- {
- ASSERT(p_inst != NULL);
- ASSERT(p_event != NULL);
- ret_code_t ret = NRF_SUCCESS;
- switch (p_event->app_evt.type)
- {
- case APP_USBD_EVT_DRV_SOF:
- break;
- case APP_USBD_EVT_DRV_RESET:
- cdc_acm_reset_port(p_inst);
- break;
- case APP_USBD_EVT_DRV_SETUP:
- ret = setup_event_handler(p_inst, (app_usbd_setup_evt_t const *)p_event);
- break;
- case APP_USBD_EVT_DRV_EPTRANSFER:
- ret = cdc_acm_endpoint_ev(p_inst, p_event);
- break;
- case APP_USBD_EVT_DRV_SUSPEND:
- break;
- case APP_USBD_EVT_DRV_RESUME:
- break;
- case APP_USBD_EVT_INST_APPEND:
- break;
- case APP_USBD_EVT_INST_REMOVE:
- break;
- case APP_USBD_EVT_STARTED:
- break;
- case APP_USBD_EVT_STOPPED:
- break;
- case APP_USBD_EVT_POWER_REMOVED:
- user_event_handler(p_inst, APP_USBD_CDC_ACM_USER_EVT_PORT_CLOSE);
- cdc_acm_reset_port(p_inst);
- break;
- default:
- ret = NRF_ERROR_NOT_SUPPORTED;
- break;
- }
- return ret;
- }
- static bool cdc_acm_feed_descriptors(app_usbd_class_descriptor_ctx_t * p_ctx,
- app_usbd_class_inst_t const * p_inst,
- uint8_t * p_buff,
- size_t max_size)
- {
- static uint8_t ifaces = 0;
- ifaces = app_usbd_class_iface_count_get(p_inst);
- app_usbd_cdc_acm_t const * p_cdc_acm = cdc_acm_get(p_inst);
- APP_USBD_CLASS_DESCRIPTOR_BEGIN(p_ctx, p_buff, max_size);
- /* INTERFACE ASSOCIATION DESCRIPTOR */
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x08); // bLength
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_DESCRIPTOR_INTERFACE_ASSOCIATION); // bDescriptorType = Interface Association
- APP_USBD_CLASS_DESCRIPTOR_WRITE(p_cdc_acm->specific.inst.comm_interface); // bFirstInterface
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x02); // bInterfaceCount
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_CDC_COMM_CLASS); // bFunctionClass
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_CDC_SUBCLASS_ACM); // bFunctionSubClass
- APP_USBD_CLASS_DESCRIPTOR_WRITE(p_cdc_acm->specific.inst.protocol); // bFunctionProtocol
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // iFunction
- static uint8_t i = 0;
- for (i = 0; i < ifaces; i++)
- {
- /* INTERFACE DESCRIPTOR */
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x09); // bLength
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_DESCRIPTOR_INTERFACE); // bDescriptorType = Interface
- static app_usbd_class_iface_conf_t const * p_cur_iface = NULL;
- p_cur_iface = app_usbd_class_iface_get(p_inst, i);
- APP_USBD_CLASS_DESCRIPTOR_WRITE(app_usbd_class_iface_number_get(p_cur_iface)); // bInterfaceNumber
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // bAlternateSetting
- APP_USBD_CLASS_DESCRIPTOR_WRITE(app_usbd_class_iface_ep_count_get(p_cur_iface)); // bNumEndpoints
- if (p_cdc_acm->specific.inst.comm_interface == app_usbd_class_iface_number_get(p_cur_iface))
- {
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_CDC_COMM_CLASS); // bInterfaceClass = CDC COMM
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_CDC_SUBCLASS_ACM); // bInterfaceSubclass
- APP_USBD_CLASS_DESCRIPTOR_WRITE(p_cdc_acm->specific.inst.protocol); // bInterfaceProtocol
- }
- else if (p_cdc_acm->specific.inst.data_interface ==
- app_usbd_class_iface_number_get(p_cur_iface))
- {
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_CDC_DATA_CLASS); // bInterfaceClass = CDC DATA
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // bInterfaceSubclass
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // bInterfaceProtocol
- }
- else
- {
- ASSERT(0);
- }
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // iInterface
- if (p_cdc_acm->specific.inst.comm_interface == app_usbd_class_iface_number_get(p_cur_iface))
- {
- /* HEADER DESCRIPTOR */
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x05); // bLength
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_CDC_CS_INTERFACE); // bDescriptorType = Class Specific Interface
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_CDC_SCS_HEADER); // bDescriptorSubtype = Header Functional Descriptor
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x10); // bcdCDC LSB
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x01); // bcdCDC MSB
- /* CALL MANAGEMENT DESCRIPTOR */
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x05); // bLength
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_CDC_CS_INTERFACE); // bDescriptorType = Class Specific Interface
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_CDC_SCS_CALL_MGMT); // bDescriptorSubtype = Call Management Functional Descriptor
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x03); // bmCapabilities
- APP_USBD_CLASS_DESCRIPTOR_WRITE(p_cdc_acm->specific.inst.data_interface); // bDataInterface
- /* ABSTRACT CONTROL MANAGEMENT DESCRIPTOR */
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x04); // bLength
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_CDC_CS_INTERFACE); // bDescriptorType = Class Specific Interface
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_CDC_SCS_ACM); // bDescriptorSubtype = Abstract Control Management Functional Descriptor
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x02); // bmCapabilities
- /* UNION DESCRIPTOR */
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x05);
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_CDC_CS_INTERFACE); // bDescriptorType = Class Specific Interface
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_CDC_SCS_UNION); // bDescriptorSubtype = Union Functional Descriptor
- APP_USBD_CLASS_DESCRIPTOR_WRITE(p_cdc_acm->specific.inst.comm_interface); // bControlInterface
- APP_USBD_CLASS_DESCRIPTOR_WRITE(p_cdc_acm->specific.inst.data_interface); // bSubordinateInterface
- }
- else if (p_cdc_acm->specific.inst.data_interface ==
- app_usbd_class_iface_number_get(p_cur_iface))
- {
- ;
- }
- else
- {
- ASSERT(0);
- }
- /* ENDPOINT DESCRIPTORS */
- static uint8_t endpoints = 0;
- endpoints = app_usbd_class_iface_ep_count_get(p_cur_iface);
- static uint8_t j = 0;
- for (j = 0; j < endpoints; j++)
- {
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x07); // bLength
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_DESCRIPTOR_ENDPOINT); // bDescriptorType = Endpoint
- static app_usbd_class_ep_conf_t const * p_cur_ep = NULL;
- p_cur_ep = app_usbd_class_iface_ep_get(p_cur_iface, j);
- APP_USBD_CLASS_DESCRIPTOR_WRITE(app_usbd_class_ep_address_get(p_cur_ep)); // bEndpointAddress
- if (p_cdc_acm->specific.inst.comm_interface ==
- app_usbd_class_iface_number_get(p_cur_iface))
- {
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_DESCRIPTOR_EP_ATTR_TYPE_INTERRUPT); // bmAttributes
- }
- else if (p_cdc_acm->specific.inst.data_interface ==
- app_usbd_class_iface_number_get(p_cur_iface))
- {
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_DESCRIPTOR_EP_ATTR_TYPE_BULK); // bmAttributes
- }
- else
- {
- ASSERT(0);
- }
- APP_USBD_CLASS_DESCRIPTOR_WRITE(LSB_16(NRF_DRV_USBD_EPSIZE)); // wMaxPacketSize LSB
- APP_USBD_CLASS_DESCRIPTOR_WRITE(MSB_16(NRF_DRV_USBD_EPSIZE)); // wMaxPacketSize MSB
- if (p_cdc_acm->specific.inst.comm_interface ==
- app_usbd_class_iface_number_get(p_cur_iface))
- {
- APP_USBD_CLASS_DESCRIPTOR_WRITE(p_cdc_acm->specific.inst.p_ep_interval[0]); // bInterval
- }
- else if (p_cdc_acm->specific.inst.data_interface ==
- app_usbd_class_iface_number_get(p_cur_iface))
- {
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // bInterval
- }
- else
- {
- ASSERT(0);
- }
- }
- }
- APP_USBD_CLASS_DESCRIPTOR_END();
- }
- /**
- * @brief Public cdc_acm class interface.
- *
- */
- const app_usbd_class_methods_t app_usbd_cdc_acm_class_methods = {
- .event_handler = cdc_acm_event_handler,
- .feed_descriptors = cdc_acm_feed_descriptors,
- };
- /** @} */
- ret_code_t app_usbd_cdc_acm_write(app_usbd_cdc_acm_t const * p_cdc_acm,
- const void * p_buf,
- size_t length)
- {
- app_usbd_class_inst_t const * p_inst = app_usbd_cdc_acm_class_inst_get(p_cdc_acm);
- app_usbd_cdc_acm_ctx_t * p_cdc_acm_ctx = cdc_acm_ctx_get(p_cdc_acm);
- bool dtr_state = (p_cdc_acm_ctx->line_state & APP_USBD_CDC_ACM_LINE_STATE_DTR) ?
- true : false;
- if (!dtr_state)
- {
- /*Port is not opened*/
- return NRF_ERROR_INVALID_STATE;
- }
-
- nrf_drv_usbd_ep_t ep = data_ep_in_addr_get(p_inst);
-
- if (APP_USBD_CDC_ACM_ZLP_ON_EPSIZE_WRITE && ((length % NRF_DRV_USBD_EPSIZE) == 0))
- {
- NRF_DRV_USBD_TRANSFER_IN_ZLP(transfer, p_buf, length);
- return app_usbd_ep_transfer(ep, &transfer);
- }
- else
- {
- NRF_DRV_USBD_TRANSFER_IN(transfer, p_buf, length);
- return app_usbd_ep_transfer(ep, &transfer);
- }
- }
- size_t app_usbd_cdc_acm_rx_size(app_usbd_cdc_acm_t const * p_cdc_acm)
- {
- app_usbd_cdc_acm_ctx_t * p_cdc_acm_ctx = cdc_acm_ctx_get(p_cdc_acm);
- return p_cdc_acm_ctx->last_read;
- }
- size_t app_usbd_cdc_acm_bytes_stored(app_usbd_cdc_acm_t const * p_cdc_acm)
- {
- app_usbd_cdc_acm_ctx_t * p_cdc_acm_ctx = cdc_acm_ctx_get(p_cdc_acm);
- return p_cdc_acm_ctx->bytes_left;
- }
- ret_code_t app_usbd_cdc_acm_read(app_usbd_cdc_acm_t const * p_cdc_acm,
- void * p_buf,
- size_t length)
- {
- ASSERT(p_buf != NULL);
- ret_code_t ret;
- app_usbd_cdc_acm_ctx_t * p_cdc_acm_ctx = cdc_acm_ctx_get(p_cdc_acm);
- if (0U == (p_cdc_acm_ctx->line_state & APP_USBD_CDC_ACM_LINE_STATE_DTR))
- {
- /*Port is not opened*/
- return NRF_ERROR_INVALID_STATE;
- }
- #if (APP_USBD_CONFIG_EVENT_QUEUE_ENABLE == 0)
- CRITICAL_REGION_ENTER();
- #endif // (APP_USBD_CONFIG_EVENT_QUEUE_ENABLE == 0)
- if (p_cdc_acm_ctx->rx_transfer[0].p_buf == NULL)
- {
- if (p_cdc_acm_ctx->bytes_left >= length)
- {
- memcpy(p_buf, p_cdc_acm_ctx->p_copy_pos, length);
- p_cdc_acm_ctx->bytes_left -= length;
- p_cdc_acm_ctx->p_copy_pos += length;
- p_cdc_acm_ctx->last_read = length;
- ret = NRF_SUCCESS;
- }
- else
- {
- p_cdc_acm_ctx->rx_transfer[0].p_buf = p_buf;
- p_cdc_acm_ctx->rx_transfer[0].read_left = length;
- nrf_drv_usbd_ep_t ep = data_ep_out_addr_get(app_usbd_cdc_acm_class_inst_get(p_cdc_acm));
- nrf_drv_usbd_handler_desc_t const handler_desc = {
- .handler.consumer = cdc_acm_consumer,
- .p_context = p_cdc_acm_ctx
- };
- if (p_cdc_acm_ctx->bytes_left > 0)
- {
- memcpy(p_cdc_acm_ctx->rx_transfer[0].p_buf,
- p_cdc_acm_ctx->p_copy_pos,
- p_cdc_acm_ctx->bytes_left);
- p_cdc_acm_ctx->rx_transfer[0].read_left -= p_cdc_acm_ctx->bytes_left;
- p_cdc_acm_ctx->rx_transfer[0].p_buf += p_cdc_acm_ctx->bytes_left;
- p_cdc_acm_ctx->bytes_read = p_cdc_acm_ctx->bytes_left;
- p_cdc_acm_ctx->bytes_left = 0;
- }
- ret = app_usbd_ep_handled_transfer(ep, &handler_desc);
- if (ret == NRF_SUCCESS)
- {
- ret = NRF_ERROR_IO_PENDING;
- }
- }
- }
- else if (p_cdc_acm_ctx->rx_transfer[1].p_buf == NULL)
- {
- p_cdc_acm_ctx->rx_transfer[1].p_buf = p_buf;
- p_cdc_acm_ctx->rx_transfer[1].read_left = length;
- ret = NRF_ERROR_IO_PENDING;
- }
- else
- {
- ret = NRF_ERROR_BUSY;
- }
- #if (APP_USBD_CONFIG_EVENT_QUEUE_ENABLE == 0)
- CRITICAL_REGION_EXIT();
- #endif // (APP_USBD_CONFIG_EVENT_QUEUE_ENABLE == 0)
- return ret;
- }
- ret_code_t app_usbd_cdc_acm_read_any(app_usbd_cdc_acm_t const * p_cdc_acm,
- void * p_buf,
- size_t length)
- {
- ASSERT(p_buf != NULL);
- ret_code_t ret;
- app_usbd_cdc_acm_ctx_t * p_cdc_acm_ctx = cdc_acm_ctx_get(p_cdc_acm);
- if (0U == (p_cdc_acm_ctx->line_state & APP_USBD_CDC_ACM_LINE_STATE_DTR))
- {
- /*Port is not opened*/
- return NRF_ERROR_INVALID_STATE;
- }
- #if (APP_USBD_CONFIG_EVENT_QUEUE_ENABLE == 0)
- CRITICAL_REGION_ENTER();
- #endif // (APP_USBD_CONFIG_EVENT_QUEUE_ENABLE == 0)
- if (p_cdc_acm_ctx->bytes_left > 0)
- {
- size_t to_copy = MIN(length, p_cdc_acm_ctx->bytes_left);
- memcpy(p_buf, p_cdc_acm_ctx->p_copy_pos, to_copy);
- p_cdc_acm_ctx->bytes_left -= to_copy;
- p_cdc_acm_ctx->p_copy_pos += to_copy;
- p_cdc_acm_ctx->last_read = to_copy;
- ret = NRF_SUCCESS;
- }
- else
- {
- if (p_cdc_acm_ctx->rx_transfer[0].p_buf == NULL)
- {
- p_cdc_acm_ctx->rx_transfer[0].p_buf = p_buf;
- p_cdc_acm_ctx->rx_transfer[0].read_left = length;
- nrf_drv_usbd_ep_t ep = data_ep_out_addr_get(app_usbd_cdc_acm_class_inst_get(p_cdc_acm));
- nrf_drv_usbd_handler_desc_t const handler_desc = {
- .handler.consumer = cdc_acm_single_shoot_consumer,
- .p_context = p_cdc_acm_ctx
- };
- ret = app_usbd_ep_handled_transfer(ep, &handler_desc);
- if (ret == NRF_SUCCESS)
- {
- ret = NRF_ERROR_IO_PENDING;
- }
- }
- else
- {
- ret = NRF_ERROR_BUSY;
- }
- }
- #if (APP_USBD_CONFIG_EVENT_QUEUE_ENABLE == 0)
- CRITICAL_REGION_EXIT();
- #endif // (APP_USBD_CONFIG_EVENT_QUEUE_ENABLE == 0)
- return ret;
- }
- static ret_code_t cdc_acm_serial_state_notify(app_usbd_cdc_acm_t const * p_cdc_acm)
- {
- app_usbd_class_inst_t const * p_inst = app_usbd_cdc_acm_class_inst_get(p_cdc_acm);
- app_usbd_cdc_acm_ctx_t * p_cdc_acm_ctx = cdc_acm_ctx_get(p_cdc_acm);
- nrf_drv_usbd_ep_t ep = comm_ep_in_addr_get(p_inst);
- NRF_DRV_USBD_TRANSFER_OUT(transfer,
- &p_cdc_acm_ctx->request.payload,
- sizeof(app_usbd_cdc_acm_notify_t));
- return app_usbd_ep_transfer(ep, &transfer);
- }
- ret_code_t app_usbd_cdc_acm_serial_state_notify(app_usbd_cdc_acm_t const * p_cdc_acm,
- app_usbd_cdc_acm_serial_state_t serial_state,
- bool value)
- {
- app_usbd_cdc_acm_ctx_t * p_cdc_acm_ctx = cdc_acm_ctx_get(p_cdc_acm);
- ret_code_t ret;
- CRITICAL_REGION_ENTER();
- ret = NRF_SUCCESS;
- switch (serial_state)
- {
- case APP_USBD_CDC_ACM_SERIAL_STATE_DCD:
- case APP_USBD_CDC_ACM_SERIAL_STATE_DSR:
- case APP_USBD_CDC_ACM_SERIAL_STATE_BREAK:
- case APP_USBD_CDC_ACM_SERIAL_STATE_RING:
- case APP_USBD_CDC_ACM_SERIAL_STATE_FRAMING:
- case APP_USBD_CDC_ACM_SERIAL_STATE_PARITY:
- case APP_USBD_CDC_ACM_SERIAL_STATE_OVERRUN:
- if (value)
- {
- p_cdc_acm_ctx->serial_state |= serial_state;
- }
- else
- {
- p_cdc_acm_ctx->serial_state &= ~serial_state;
- }
- break;
- default:
- ret = NRF_ERROR_NOT_SUPPORTED;
- break;
- }
- if (ret == NRF_SUCCESS)
- {
- app_usbd_cdc_acm_notify_t * notify = &p_cdc_acm_ctx->request.payload.notify;
- notify->cdc_notify.bmRequestType = app_usbd_setup_req_val(APP_USBD_SETUP_REQREC_INTERFACE,
- APP_USBD_SETUP_REQTYPE_CLASS,
- APP_USBD_SETUP_REQDIR_IN);
- notify->cdc_notify.bRequest = APP_USBD_CDC_NOTIF_SERIAL_STATE;
- notify->cdc_notify.wValue = 0;
- notify->cdc_notify.wIndex = 0;
- notify->cdc_notify.wLength = sizeof(notify->serial_state);
- notify->serial_state = p_cdc_acm_ctx->serial_state;
- ret = cdc_acm_serial_state_notify(p_cdc_acm);
- }
- CRITICAL_REGION_EXIT();
- return ret;
- }
- ret_code_t app_usbd_cdc_acm_line_state_get(app_usbd_cdc_acm_t const * p_cdc_acm,
- app_usbd_cdc_acm_line_state_t line_state,
- uint32_t * value)
- {
- app_usbd_cdc_acm_ctx_t * p_cdc_acm_ctx = cdc_acm_ctx_get(p_cdc_acm);
- ret_code_t ret;
- CRITICAL_REGION_ENTER();
- ret = NRF_SUCCESS;
- switch (line_state)
- {
- case APP_USBD_CDC_ACM_LINE_STATE_DTR:
- case APP_USBD_CDC_ACM_LINE_STATE_RTS:
- *value = (p_cdc_acm_ctx->line_state & line_state) != 0;
- break;
- default:
- ret = NRF_ERROR_NOT_SUPPORTED;
- break;
- }
- CRITICAL_REGION_EXIT();
- return ret;
- }
- #endif //NRF_MODULE_ENABLED(APP_USBD_CDC_ACM)
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