146 lines
4.2 KiB
C
146 lines
4.2 KiB
C
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2020, Ha Thach (tinyusb.org)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* This file is part of the TinyUSB stack.
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*/
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#include "tusb_option.h"
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#if CFG_TUH_ENABLED
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#include "tusb.h"
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#include "usbh_classdriver.h"
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enum
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{
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STAGE_SETUP,
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STAGE_DATA,
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STAGE_ACK
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};
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typedef struct
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{
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tusb_control_request_t request TU_ATTR_ALIGNED(4);
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uint8_t stage;
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uint8_t* buffer;
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tuh_control_complete_cb_t complete_cb;
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} usbh_control_xfer_t;
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static usbh_control_xfer_t _ctrl_xfer;
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//CFG_TUSB_MEM_SECTION CFG_TUSB_MEM_ALIGN
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//static uint8_t _tuh_ctrl_buf[CFG_TUH_ENUMERATION_BUFSIZE];
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//--------------------------------------------------------------------+
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// MACRO TYPEDEF CONSTANT ENUM DECLARATION
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//--------------------------------------------------------------------+
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bool tuh_control_xfer (uint8_t dev_addr, tusb_control_request_t const* request, void* buffer, tuh_control_complete_cb_t complete_cb)
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{
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// TODO need to claim the endpoint first
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const uint8_t rhport = usbh_get_rhport(dev_addr);
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_ctrl_xfer.request = (*request);
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_ctrl_xfer.buffer = buffer;
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_ctrl_xfer.stage = STAGE_SETUP;
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_ctrl_xfer.complete_cb = complete_cb;
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TU_LOG2("Control Setup (addr = %u): ", dev_addr);
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TU_LOG2_VAR(request);
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TU_LOG2("\r\n");
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// Send setup packet
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if ( hcd_edpt_control_xfer )
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{
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_ctrl_xfer.stage = STAGE_ACK;
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TU_ASSERT( hcd_edpt_control_xfer(rhport, dev_addr, (uint8_t const*) &_ctrl_xfer.request, buffer) );
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}else
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{
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TU_ASSERT( hcd_setup_send(rhport, dev_addr, (uint8_t const*) &_ctrl_xfer.request) );
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}
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return true;
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}
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static void _xfer_complete(uint8_t dev_addr, xfer_result_t result)
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{
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TU_LOG2("\r\n");
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if (_ctrl_xfer.complete_cb) _ctrl_xfer.complete_cb(dev_addr, &_ctrl_xfer.request, result);
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}
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bool usbh_control_xfer_cb (uint8_t dev_addr, uint8_t ep_addr, xfer_result_t result, uint32_t xferred_bytes)
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{
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(void) ep_addr;
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(void) xferred_bytes;
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const uint8_t rhport = usbh_get_rhport(dev_addr);
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tusb_control_request_t const * request = &_ctrl_xfer.request;
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if (XFER_RESULT_SUCCESS != result)
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{
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TU_LOG2("Control failed: result = %d\r\n", result);
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// terminate transfer if any stage failed
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_xfer_complete(dev_addr, result);
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}else
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{
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switch(_ctrl_xfer.stage)
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{
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case STAGE_SETUP:
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_ctrl_xfer.stage = STAGE_DATA;
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if (request->wLength)
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{
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// DATA stage: initial data toggle is always 1
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hcd_edpt_xfer(rhport, dev_addr, tu_edpt_addr(0, request->bmRequestType_bit.direction), _ctrl_xfer.buffer, request->wLength);
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return true;
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}
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__attribute__((fallthrough));
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case STAGE_DATA:
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_ctrl_xfer.stage = STAGE_ACK;
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if (request->wLength)
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{
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TU_LOG2("Control data (addr = %u):\r\n", dev_addr);
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TU_LOG2_MEM(_ctrl_xfer.buffer, request->wLength, 2);
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}
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// ACK stage: toggle is always 1
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hcd_edpt_xfer(rhport, dev_addr, tu_edpt_addr(0, 1-request->bmRequestType_bit.direction), NULL, 0);
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break;
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case STAGE_ACK:
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_xfer_complete(dev_addr, result);
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break;
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default: return false;
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}
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}
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return true;
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}
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#endif
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