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258 lines
9.1 KiB
C
258 lines
9.1 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 (TUSB_OPT_HOST_ENABLED && CFG_TUH_CDC)
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#define _TINY_USB_SOURCE_FILE_
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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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typedef struct {
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uint8_t itf_num;
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uint8_t itf_protocol;
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cdc_acm_capability_t acm_capability;
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pipe_handle_t pipe_notification, pipe_out, pipe_in;
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uint8_t ep_notif;
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uint8_t ep_in;
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uint8_t ep_out;
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} cdch_data_t;
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//--------------------------------------------------------------------+
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// INTERNAL OBJECT & FUNCTION DECLARATION
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//--------------------------------------------------------------------+
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static cdch_data_t cdch_data[CFG_TUSB_HOST_DEVICE_MAX];
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bool tuh_cdc_mounted(uint8_t dev_addr)
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{
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cdch_data_t* cdc = &cdch_data[dev_addr-1];
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return cdc->ep_in && cdc->ep_out;
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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 ( !tuh_cdc_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(dev_addr, p_cdc->pipe_notification );
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case CDC_PIPE_DATA_IN:
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return hcd_pipe_is_busy(dev_addr, p_cdc->pipe_in );
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case CDC_PIPE_DATA_OUT:
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return hcd_pipe_is_busy(dev_addr, 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 tuh_cdc_mounted(dev_addr) &&
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(CDC_COMM_PROTOCOL_ATCOMMAND <= cdch_data[dev_addr-1].itf_protocol) &&
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(cdch_data[dev_addr-1].itf_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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TU_ASSERT( tuh_cdc_mounted(dev_addr), TUSB_ERROR_CDCH_DEVICE_NOT_MOUNTED);
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TU_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(dev_addr, pipe_out) ) return TUSB_ERROR_INTERFACE_IS_BUSY;
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return hcd_pipe_xfer(dev_addr, 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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TU_ASSERT( tuh_cdc_mounted(dev_addr), TUSB_ERROR_CDCH_DEVICE_NOT_MOUNTED);
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TU_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(dev_addr, pipe_in) ) return TUSB_ERROR_INTERFACE_IS_BUSY;
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return hcd_pipe_xfer(dev_addr, 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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tu_memclr(cdch_data, sizeof(cdch_data_t)*CFG_TUSB_HOST_DEVICE_MAX);
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}
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bool cdch_open_subtask(uint8_t rhport, uint8_t dev_addr, tusb_desc_interface_t const *itf_desc, uint16_t *p_length)
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{
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// Only support ACM
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TU_VERIFY( CDC_COMM_SUBCLASS_ABSTRACT_CONTROL_MODEL == itf_desc->bInterfaceSubClass);
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// Only support AT commands, no protocol and vendor specific commands.
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TU_VERIFY(tu_within(CDC_COMM_PROTOCOL_NONE, itf_desc->bInterfaceProtocol, CDC_COMM_PROTOCOL_ATCOMMAND_CDMA) ||
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0xff == itf_desc->bInterfaceProtocol);
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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 *) itf_desc );
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p_cdc = &cdch_data[dev_addr-1];
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p_cdc->itf_num = itf_desc->bInterfaceNumber;
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p_cdc->itf_protocol = itf_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_desc_interface_t);
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// Communication Functional Descriptors
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while( TUSB_DESC_CLASS_SPECIFIC == p_desc[DESC_OFFSET_TYPE] )
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{
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if ( CDC_FUNC_DESC_ABSTRACT_CONTROL_MANAGEMENT == cdc_functional_desc_typeof(p_desc) )
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{
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// save ACM bmCapabilities
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p_cdc->acm_capability = ((cdc_desc_func_acm_t const *) p_desc)->bmCapabilities;
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}
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(*p_length) += p_desc[DESC_OFFSET_LEN];
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p_desc = descriptor_next(p_desc);
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}
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if ( TUSB_DESC_ENDPOINT == p_desc[DESC_OFFSET_TYPE])
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{
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// notification endpoint if any
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tusb_desc_endpoint_t const * ep_desc = (tusb_desc_endpoint_t const *) p_desc;
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p_cdc->pipe_notification = hcd_pipe_open(rhport, dev_addr, ep_desc, TUSB_CLASS_CDC);
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p_cdc->ep_notif = ep_desc->bEndpointAddress;
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(*p_length) += p_desc[DESC_OFFSET_LEN];
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p_desc = descriptor_next(p_desc);
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TU_ASSERT(pipehandle_is_valid(p_cdc->pipe_notification));
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}
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//------------- Data Interface (if any) -------------//
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if ( (TUSB_DESC_INTERFACE == p_desc[DESC_OFFSET_TYPE]) &&
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(TUSB_CLASS_CDC_DATA == ((tusb_desc_interface_t const *) p_desc)->bInterfaceClass) )
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{
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(*p_length) += p_desc[DESC_OFFSET_LEN];
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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_desc_endpoint_t const *ep_desc = (tusb_desc_endpoint_t const *) p_desc;
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TU_ASSERT(TUSB_DESC_ENDPOINT == ep_desc->bDescriptorType);
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TU_ASSERT(TUSB_XFER_BULK == ep_desc->bmAttributes.xfer);
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pipe_handle_t * p_pipe_hdl = ( ep_desc->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(rhport, dev_addr, ep_desc, TUSB_CLASS_CDC);
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TU_ASSERT ( pipehandle_is_valid(*p_pipe_hdl) );
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if ( edpt_dir(ep_desc->bEndpointAddress) == TUSB_DIR_IN )
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{
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p_cdc->ep_in = ep_desc->bEndpointAddress;
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}else
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{
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p_cdc->ep_out = ep_desc->bEndpointAddress;
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}
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(*p_length) += p_desc[DESC_OFFSET_LEN];
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p_desc = descriptor_next( p_desc );
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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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// FIXME move to seperate API : connect
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tusb_control_request_t request =
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{
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.bmRequestType_bit = { .recipient = TUSB_REQ_RCPT_INTERFACE, .type = TUSB_REQ_TYPE_CLASS, .direction = TUSB_DIR_OUT },
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.bRequest = CDC_REQUEST_SET_CONTROL_LINE_STATE,
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.wValue = 0x03, // dtr on, cst on
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.wIndex = p_cdc->itf_num,
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.wLength = 0
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};
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TU_ASSERT( usbh_control_xfer(dev_addr, &request, NULL) );
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return true;
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}
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void cdch_isr(uint8_t dev_addr, uint8_t ep_addr, xfer_result_t event, uint32_t xferred_bytes)
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{
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tuh_cdc_xfer_isr( dev_addr, event, 0, 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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hcd_pipe_close(TUH_OPT_RHPORT, dev_addr, p_cdc->pipe_notification);
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hcd_pipe_close(TUH_OPT_RHPORT, dev_addr, p_cdc->pipe_in);
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hcd_pipe_close(TUH_OPT_RHPORT, dev_addr, p_cdc->pipe_out);
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tu_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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