244 lines
9.3 KiB
C
244 lines
9.3 KiB
C
/**************************************************************************/
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/*!
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@file cdc_host.c
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@author hathach (tinyusb.org)
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@section LICENSE
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Software License Agreement (BSD License)
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Copyright (c) 2013, hathach (tinyusb.org)
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the copyright holders nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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This file is part of the tinyusb stack.
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*/
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/**************************************************************************/
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#include "tusb_option.h"
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#if (MODE_HOST_SUPPORTED && TUSB_CFG_HOST_CDC)
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#define _TINY_USB_SOURCE_FILE_
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//--------------------------------------------------------------------+
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// INCLUDE
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//--------------------------------------------------------------------+
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#include "common/tusb_common.h"
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#include "cdc_host.h"
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//--------------------------------------------------------------------+
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// MACRO CONSTANT TYPEDEF
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//--------------------------------------------------------------------+
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//--------------------------------------------------------------------+
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// INTERNAL OBJECT & FUNCTION DECLARATION
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//--------------------------------------------------------------------+
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STATIC_VAR cdch_data_t cdch_data[TUSB_CFG_HOST_DEVICE_MAX]; // TODO to be static
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static inline cdc_pipeid_t get_app_pipeid(pipe_handle_t pipe_hdl)
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{
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cdch_data_t const * p_cdc = &cdch_data[pipe_hdl.dev_addr-1];
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return pipehandle_is_equal( pipe_hdl, p_cdc->pipe_notification ) ? CDC_PIPE_NOTIFICATION :
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pipehandle_is_equal( pipe_hdl, p_cdc->pipe_in ) ? CDC_PIPE_DATA_IN :
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pipehandle_is_equal( pipe_hdl, p_cdc->pipe_out ) ? CDC_PIPE_DATA_OUT : CDC_PIPE_ERROR;
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}
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static inline bool tusbh_cdc_is_mounted(uint8_t dev_addr)
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{
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// FIXME cannot use mounted class flag as at the point _open_sublass is called, the flag is not set yet
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#ifdef _TEST_
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return (tusbh_device_get_mounted_class_flag(dev_addr) & BIT_(TUSB_CLASS_CDC)) != 0;
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#else
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return pipehandle_is_valid(cdch_data[dev_addr-1].pipe_in) &&
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pipehandle_is_valid(cdch_data[dev_addr-1].pipe_out);
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#endif
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}
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bool tuh_cdc_is_busy(uint8_t dev_addr, cdc_pipeid_t pipeid)
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{
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if ( !tusbh_cdc_is_mounted(dev_addr) ) return false;
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cdch_data_t const * p_cdc = &cdch_data[dev_addr-1];
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switch (pipeid)
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{
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case CDC_PIPE_NOTIFICATION:
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return hcd_pipe_is_busy( p_cdc->pipe_notification );
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case CDC_PIPE_DATA_IN:
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return hcd_pipe_is_busy( p_cdc->pipe_in );
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case CDC_PIPE_DATA_OUT:
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return hcd_pipe_is_busy( p_cdc->pipe_out );
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default:
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return false;
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}
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}
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//--------------------------------------------------------------------+
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// APPLICATION API (parameter validation needed)
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//--------------------------------------------------------------------+
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bool tuh_cdc_serial_is_mounted(uint8_t dev_addr)
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{
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// TODO consider all AT Command as serial candidate
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return tusbh_cdc_is_mounted(dev_addr) &&
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(CDC_COMM_PROTOCOL_ATCOMMAND <= cdch_data[dev_addr-1].interface_protocol) &&
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(cdch_data[dev_addr-1].interface_protocol <= CDC_COMM_PROTOCOL_ATCOMMAND_CDMA);
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}
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tusb_error_t tuh_cdc_send(uint8_t dev_addr, void const * p_data, uint32_t length, bool is_notify)
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{
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ASSERT( tusbh_cdc_is_mounted(dev_addr), TUSB_ERROR_CDCH_DEVICE_NOT_MOUNTED);
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ASSERT( p_data != NULL && length, TUSB_ERROR_INVALID_PARA);
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pipe_handle_t pipe_out = cdch_data[dev_addr-1].pipe_out;
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if ( hcd_pipe_is_busy(pipe_out) ) return TUSB_ERROR_INTERFACE_IS_BUSY;
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return hcd_pipe_xfer( pipe_out, (void *) p_data, length, is_notify);
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}
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tusb_error_t tuh_cdc_receive(uint8_t dev_addr, void * p_buffer, uint32_t length, bool is_notify)
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{
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ASSERT( tusbh_cdc_is_mounted(dev_addr), TUSB_ERROR_CDCH_DEVICE_NOT_MOUNTED);
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ASSERT( p_buffer != NULL && length, TUSB_ERROR_INVALID_PARA);
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pipe_handle_t pipe_in = cdch_data[dev_addr-1].pipe_in;
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if ( hcd_pipe_is_busy(pipe_in) ) return TUSB_ERROR_INTERFACE_IS_BUSY;
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return hcd_pipe_xfer( pipe_in, p_buffer, length, is_notify);
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}
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//--------------------------------------------------------------------+
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// USBH-CLASS DRIVER API
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//--------------------------------------------------------------------+
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void cdch_init(void)
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{
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memclr_(cdch_data, sizeof(cdch_data_t)*TUSB_CFG_HOST_DEVICE_MAX);
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}
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tusb_error_t cdch_open_subtask(uint8_t dev_addr, tusb_descriptor_interface_t const *p_interface_desc, uint16_t *p_length)
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{
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OSAL_SUBTASK_BEGIN
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// TODO change following assert to subtask_assert
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if ( CDC_COMM_SUBCLASS_ABSTRACT_CONTROL_MODEL != p_interface_desc->bInterfaceSubClass) return TUSB_ERROR_CDC_UNSUPPORTED_SUBCLASS;
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if ( !(is_in_range(CDC_COMM_PROTOCOL_ATCOMMAND, p_interface_desc->bInterfaceProtocol, CDC_COMM_PROTOCOL_ATCOMMAND_CDMA) ||
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0xff == p_interface_desc->bInterfaceProtocol) )
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{
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return TUSB_ERROR_CDC_UNSUPPORTED_PROTOCOL;
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}
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uint8_t const * p_desc;
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cdch_data_t * p_cdc;
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p_desc = descriptor_next ( (uint8_t const *) p_interface_desc );
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p_cdc = &cdch_data[dev_addr-1]; // non-static variable cannot be used after OS service call
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p_cdc->interface_number = p_interface_desc->bInterfaceNumber;
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p_cdc->interface_protocol = p_interface_desc->bInterfaceProtocol; // TODO 0xff is consider as rndis candidate, other is virtual Com
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//------------- Communication Interface -------------//
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(*p_length) = sizeof(tusb_descriptor_interface_t);
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while( TUSB_DESC_CLASS_SPECIFIC == p_desc[DESCRIPTOR_OFFSET_TYPE] )
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{ // Communication Functional Descriptors
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if ( CDC_FUNC_DESC_ABSTRACT_CONTROL_MANAGEMENT == cdc_functional_desc_typeof(p_desc) )
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{ // save ACM bmCapabilities
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p_cdc->acm_capability = ((cdc_desc_func_abstract_control_management_t const *) p_desc)->bmCapabilities;
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}
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(*p_length) += p_desc[DESCRIPTOR_OFFSET_LENGTH];
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p_desc = descriptor_next(p_desc);
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}
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if ( TUSB_DESC_ENDPOINT == p_desc[DESCRIPTOR_OFFSET_TYPE])
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{ // notification endpoint if any
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p_cdc->pipe_notification = hcd_pipe_open(dev_addr, (tusb_descriptor_endpoint_t const *) p_desc, TUSB_CLASS_CDC);
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(*p_length) += p_desc[DESCRIPTOR_OFFSET_LENGTH];
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p_desc = descriptor_next(p_desc);
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ASSERT(pipehandle_is_valid(p_cdc->pipe_notification), TUSB_ERROR_HCD_OPEN_PIPE_FAILED);
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}
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//------------- Data Interface (if any) -------------//
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if ( (TUSB_DESC_INTERFACE == p_desc[DESCRIPTOR_OFFSET_TYPE]) &&
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(TUSB_CLASS_CDC_DATA == ((tusb_descriptor_interface_t const *) p_desc)->bInterfaceClass) )
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{
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(*p_length) += p_desc[DESCRIPTOR_OFFSET_LENGTH];
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p_desc = descriptor_next(p_desc);
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// data endpoints expected to be in pairs
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for(uint32_t i=0; i<2; i++)
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{
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tusb_descriptor_endpoint_t const *p_endpoint = (tusb_descriptor_endpoint_t const *) p_desc;
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ASSERT_INT(TUSB_DESC_ENDPOINT, p_endpoint->bDescriptorType, TUSB_ERROR_USBH_DESCRIPTOR_CORRUPTED);
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ASSERT_INT(TUSB_XFER_BULK, p_endpoint->bmAttributes.xfer, TUSB_ERROR_USBH_DESCRIPTOR_CORRUPTED);
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pipe_handle_t * p_pipe_hdl = ( p_endpoint->bEndpointAddress & TUSB_DIR_IN_MASK ) ?
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&p_cdc->pipe_in : &p_cdc->pipe_out;
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(*p_pipe_hdl) = hcd_pipe_open(dev_addr, p_endpoint, TUSB_CLASS_CDC);
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ASSERT ( pipehandle_is_valid(*p_pipe_hdl), TUSB_ERROR_HCD_OPEN_PIPE_FAILED );
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(*p_length) += p_desc[DESCRIPTOR_OFFSET_LENGTH];
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p_desc = descriptor_next( p_desc );
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}
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}
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{
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// FIXME mounted class flag is not set yet
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tuh_cdc_mounted_cb(dev_addr);
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}
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OSAL_SUBTASK_END
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}
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void cdch_isr(pipe_handle_t pipe_hdl, tusb_event_t event, uint32_t xferred_bytes)
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{
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tuh_cdc_xfer_isr( pipe_hdl.dev_addr, event, get_app_pipeid(pipe_hdl), xferred_bytes );
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}
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void cdch_close(uint8_t dev_addr)
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{
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cdch_data_t * p_cdc = &cdch_data[dev_addr-1];
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(void) hcd_pipe_close(p_cdc->pipe_notification);
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(void) hcd_pipe_close(p_cdc->pipe_in);
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(void) hcd_pipe_close(p_cdc->pipe_out);
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memclr_(p_cdc, sizeof(cdch_data_t));
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tuh_cdc_unmounted_cb(dev_addr);
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}
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#endif
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