add tinyusb

4 files changed, 597 insertions, 0 deletions

diff --git a/tinyusb/src/class/vendor/vendor_device.c b/tinyusb/src/class/vendor/vendor_device.c
new file mode 100755
index 00000000..8c59b4ea
--- /dev/null
+++ b/tinyusb/src/class/vendor/vendor_device.c
@@ -0,0 +1,248 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#include "tusb_option.h"
+
+#if (TUSB_OPT_DEVICE_ENABLED && CFG_TUD_VENDOR)
+
+#include "device/usbd.h"
+#include "device/usbd_pvt.h"
+
+#include "vendor_device.h"
+
+//--------------------------------------------------------------------+
+// MACRO CONSTANT TYPEDEF
+//--------------------------------------------------------------------+
+typedef struct
+{
+  uint8_t itf_num;
+  uint8_t ep_in;
+  uint8_t ep_out;
+
+  /*------------- From this point, data is not cleared by bus reset -------------*/
+  tu_fifo_t rx_ff;
+  tu_fifo_t tx_ff;
+
+  uint8_t rx_ff_buf[CFG_TUD_VENDOR_RX_BUFSIZE];
+  uint8_t tx_ff_buf[CFG_TUD_VENDOR_TX_BUFSIZE];
+
+#if CFG_FIFO_MUTEX
+  osal_mutex_def_t rx_ff_mutex;
+  osal_mutex_def_t tx_ff_mutex;
+#endif
+
+  // Endpoint Transfer buffer
+  CFG_TUSB_MEM_ALIGN uint8_t epout_buf[CFG_TUD_VENDOR_EPSIZE];
+  CFG_TUSB_MEM_ALIGN uint8_t epin_buf[CFG_TUD_VENDOR_EPSIZE];
+} vendord_interface_t;
+
+CFG_TUSB_MEM_SECTION static vendord_interface_t _vendord_itf[CFG_TUD_VENDOR];
+
+#define ITF_MEM_RESET_SIZE   offsetof(vendord_interface_t, rx_ff)
+
+
+bool tud_vendor_n_mounted (uint8_t itf)
+{
+  return _vendord_itf[itf].ep_in && _vendord_itf[itf].ep_out;
+}
+
+uint32_t tud_vendor_n_available (uint8_t itf)
+{
+  return tu_fifo_count(&_vendord_itf[itf].rx_ff);
+}
+
+bool tud_vendor_n_peek(uint8_t itf, uint8_t* u8)
+{
+  return tu_fifo_peek(&_vendord_itf[itf].rx_ff, u8);
+}
+
+//--------------------------------------------------------------------+
+// Read API
+//--------------------------------------------------------------------+
+static void _prep_out_transaction (vendord_interface_t* p_itf)
+{
+  // skip if previous transfer not complete
+  if ( usbd_edpt_busy(TUD_OPT_RHPORT, p_itf->ep_out) ) return;
+
+  // Prepare for incoming data but only allow what we can store in the ring buffer.
+  uint16_t max_read = tu_fifo_remaining(&p_itf->rx_ff);
+  if ( max_read >= CFG_TUD_VENDOR_EPSIZE )
+  {
+    usbd_edpt_xfer(TUD_OPT_RHPORT, p_itf->ep_out, p_itf->epout_buf, CFG_TUD_VENDOR_EPSIZE);
+  }
+}
+
+uint32_t tud_vendor_n_read (uint8_t itf, void* buffer, uint32_t bufsize)
+{
+  vendord_interface_t* p_itf = &_vendord_itf[itf];
+  uint32_t num_read = tu_fifo_read_n(&p_itf->rx_ff, buffer, bufsize);
+  _prep_out_transaction(p_itf);
+  return num_read;
+}
+
+void tud_vendor_n_read_flush (uint8_t itf)
+{
+  vendord_interface_t* p_itf = &_vendord_itf[itf];
+  tu_fifo_clear(&p_itf->rx_ff);
+  _prep_out_transaction(p_itf);
+}
+
+//--------------------------------------------------------------------+
+// Write API
+//--------------------------------------------------------------------+
+static bool maybe_transmit(vendord_interface_t* p_itf)
+{
+  // skip if previous transfer not complete
+  TU_VERIFY( !usbd_edpt_busy(TUD_OPT_RHPORT, p_itf->ep_in) );
+
+  uint16_t count = tu_fifo_read_n(&p_itf->tx_ff, p_itf->epin_buf, CFG_TUD_VENDOR_EPSIZE);
+  if (count > 0)
+  {
+    TU_ASSERT( usbd_edpt_xfer(TUD_OPT_RHPORT, p_itf->ep_in, p_itf->epin_buf, count) );
+  }
+  return true;
+}
+
+uint32_t tud_vendor_n_write (uint8_t itf, void const* buffer, uint32_t bufsize)
+{
+  vendord_interface_t* p_itf = &_vendord_itf[itf];
+  uint16_t ret = tu_fifo_write_n(&p_itf->tx_ff, buffer, bufsize);
+  maybe_transmit(p_itf);
+  return ret;
+}
+
+uint32_t tud_vendor_n_write_available (uint8_t itf)
+{
+  return tu_fifo_remaining(&_vendord_itf[itf].tx_ff);
+}
+
+//--------------------------------------------------------------------+
+// USBD Driver API
+//--------------------------------------------------------------------+
+void vendord_init(void)
+{
+  tu_memclr(_vendord_itf, sizeof(_vendord_itf));
+
+  for(uint8_t i=0; i<CFG_TUD_VENDOR; i++)
+  {
+    vendord_interface_t* p_itf = &_vendord_itf[i];
+
+    // config fifo
+    tu_fifo_config(&p_itf->rx_ff, p_itf->rx_ff_buf, CFG_TUD_VENDOR_RX_BUFSIZE, 1, false);
+    tu_fifo_config(&p_itf->tx_ff, p_itf->tx_ff_buf, CFG_TUD_VENDOR_TX_BUFSIZE, 1, false);
+
+#if CFG_FIFO_MUTEX
+    tu_fifo_config_mutex(&p_itf->rx_ff, NULL, osal_mutex_create(&p_itf->rx_ff_mutex));
+    tu_fifo_config_mutex(&p_itf->tx_ff, osal_mutex_create(&p_itf->tx_ff_mutex), NULL);
+#endif
+  }
+}
+
+void vendord_reset(uint8_t rhport)
+{
+  (void) rhport;
+
+  for(uint8_t i=0; i<CFG_TUD_VENDOR; i++)
+  {
+    vendord_interface_t* p_itf = &_vendord_itf[i];
+
+    tu_memclr(p_itf, ITF_MEM_RESET_SIZE);
+    tu_fifo_clear(&p_itf->rx_ff);
+    tu_fifo_clear(&p_itf->tx_ff);
+  }
+}
+
+uint16_t vendord_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t max_len)
+{
+  TU_VERIFY(TUSB_CLASS_VENDOR_SPECIFIC == itf_desc->bInterfaceClass, 0);
+
+  uint16_t const drv_len = sizeof(tusb_desc_interface_t) + itf_desc->bNumEndpoints*sizeof(tusb_desc_endpoint_t);
+  TU_VERIFY(max_len >= drv_len, 0);
+
+  // Find available interface
+  vendord_interface_t* p_vendor = NULL;
+  for(uint8_t i=0; i<CFG_TUD_VENDOR; i++)
+  {
+    if ( _vendord_itf[i].ep_in == 0 && _vendord_itf[i].ep_out == 0 )
+    {
+      p_vendor = &_vendord_itf[i];
+      break;
+    }
+  }
+  TU_VERIFY(p_vendor, 0);
+
+  // Open endpoint pair with usbd helper
+  TU_ASSERT(usbd_open_edpt_pair(rhport, tu_desc_next(itf_desc), 2, TUSB_XFER_BULK, &p_vendor->ep_out, &p_vendor->ep_in), 0);
+
+  p_vendor->itf_num = itf_desc->bInterfaceNumber;
+
+  // Prepare for incoming data
+  if ( !usbd_edpt_xfer(rhport, p_vendor->ep_out, p_vendor->epout_buf, sizeof(p_vendor->epout_buf)) )
+  {
+    TU_LOG_FAILED();
+    TU_BREAKPOINT();
+  }
+
+  maybe_transmit(p_vendor);
+
+  return drv_len;
+}
+
+bool vendord_xfer_cb(uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint32_t xferred_bytes)
+{
+  (void) rhport;
+  (void) result;
+
+  uint8_t itf = 0;
+  vendord_interface_t* p_itf = _vendord_itf;
+
+  for ( ; ; itf++, p_itf++)
+  {
+    if (itf >= TU_ARRAY_SIZE(_vendord_itf)) return false;
+
+    if ( ( ep_addr == p_itf->ep_out ) || ( ep_addr == p_itf->ep_in ) ) break;
+  }
+
+  if ( ep_addr == p_itf->ep_out )
+  {
+    // Receive new data
+    tu_fifo_write_n(&p_itf->rx_ff, p_itf->epout_buf, xferred_bytes);
+
+    // Invoked callback if any
+    if (tud_vendor_rx_cb) tud_vendor_rx_cb(itf);
+
+    _prep_out_transaction(p_itf);
+  }
+  else if ( ep_addr == p_itf->ep_in )
+  {
+    // Send complete, try to send more if possible
+    maybe_transmit(p_itf);
+  }
+
+  return true;
+}
+
+#endif
diff --git a/tinyusb/src/class/vendor/vendor_device.h b/tinyusb/src/class/vendor/vendor_device.h
new file mode 100755
index 00000000..844693c6
--- /dev/null
+++ b/tinyusb/src/class/vendor/vendor_device.h
@@ -0,0 +1,136 @@
+/* 
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#ifndef _TUSB_VENDOR_DEVICE_H_
+#define _TUSB_VENDOR_DEVICE_H_
+
+#include "common/tusb_common.h"
+
+#ifndef CFG_TUD_VENDOR_EPSIZE
+#define CFG_TUD_VENDOR_EPSIZE     64
+#endif
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+//--------------------------------------------------------------------+
+// Application API (Multiple Interfaces)
+//--------------------------------------------------------------------+
+bool     tud_vendor_n_mounted         (uint8_t itf);
+
+uint32_t tud_vendor_n_available       (uint8_t itf);
+uint32_t tud_vendor_n_read            (uint8_t itf, void* buffer, uint32_t bufsize);
+bool     tud_vendor_n_peek            (uint8_t itf, uint8_t* u8);
+void     tud_vendor_n_read_flush      (uint8_t itf);
+
+uint32_t tud_vendor_n_write           (uint8_t itf, void const* buffer, uint32_t bufsize);
+uint32_t tud_vendor_n_write_available (uint8_t itf);
+
+static inline
+uint32_t tud_vendor_n_write_str       (uint8_t itf, char const* str);
+
+//--------------------------------------------------------------------+
+// Application API (Single Port)
+//--------------------------------------------------------------------+
+static inline bool     tud_vendor_mounted         (void);
+static inline uint32_t tud_vendor_available       (void);
+static inline uint32_t tud_vendor_read            (void* buffer, uint32_t bufsize);
+static inline bool     tud_vendor_peek            (uint8_t* u8);
+static inline void     tud_vendor_read_flush      (void);
+static inline uint32_t tud_vendor_write           (void const* buffer, uint32_t bufsize);
+static inline uint32_t tud_vendor_write_str       (char const* str);
+static inline uint32_t tud_vendor_write_available (void);
+
+//--------------------------------------------------------------------+
+// Application Callback API (weak is optional)
+//--------------------------------------------------------------------+
+
+// Invoked when received new data
+TU_ATTR_WEAK void tud_vendor_rx_cb(uint8_t itf);
+
+//--------------------------------------------------------------------+
+// Inline Functions
+//--------------------------------------------------------------------+
+
+static inline uint32_t tud_vendor_n_write_str (uint8_t itf, char const* str)
+{
+  return tud_vendor_n_write(itf, str, strlen(str));
+}
+
+static inline bool tud_vendor_mounted (void)
+{
+  return tud_vendor_n_mounted(0);
+}
+
+static inline uint32_t tud_vendor_available (void)
+{
+  return tud_vendor_n_available(0);
+}
+
+static inline uint32_t tud_vendor_read (void* buffer, uint32_t bufsize)
+{
+  return tud_vendor_n_read(0, buffer, bufsize);
+}
+
+static inline bool tud_vendor_peek (uint8_t* u8)
+{
+  return tud_vendor_n_peek(0, u8);
+}
+
+static inline void tud_vendor_read_flush(void)
+{
+    tud_vendor_n_read_flush(0);
+}
+
+static inline uint32_t tud_vendor_write (void const* buffer, uint32_t bufsize)
+{
+  return tud_vendor_n_write(0, buffer, bufsize);
+}
+
+static inline uint32_t tud_vendor_write_str (char const* str)
+{
+  return tud_vendor_n_write_str(0, str);
+}
+
+static inline uint32_t tud_vendor_write_available (void)
+{
+  return tud_vendor_n_write_available(0);
+}
+
+//--------------------------------------------------------------------+
+// Internal Class Driver API
+//--------------------------------------------------------------------+
+void     vendord_init(void);
+void     vendord_reset(uint8_t rhport);
+uint16_t vendord_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t max_len);
+bool     vendord_xfer_cb(uint8_t rhport, uint8_t ep_addr, xfer_result_t event, uint32_t xferred_bytes);
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* _TUSB_VENDOR_DEVICE_H_ */
diff --git a/tinyusb/src/class/vendor/vendor_host.c b/tinyusb/src/class/vendor/vendor_host.c
new file mode 100755
index 00000000..1e28e9af
--- /dev/null
+++ b/tinyusb/src/class/vendor/vendor_host.c
@@ -0,0 +1,146 @@
+/* 
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#include "tusb_option.h"
+
+#if (TUSB_OPT_HOST_ENABLED && CFG_TUH_VENDOR)
+
+//--------------------------------------------------------------------+
+// INCLUDE
+//--------------------------------------------------------------------+
+#include "host/usbh.h"
+#include "vendor_host.h"
+
+//--------------------------------------------------------------------+
+// MACRO CONSTANT TYPEDEF
+//--------------------------------------------------------------------+
+
+//--------------------------------------------------------------------+
+// INTERNAL OBJECT & FUNCTION DECLARATION
+//--------------------------------------------------------------------+
+custom_interface_info_t custom_interface[CFG_TUH_DEVICE_MAX];
+
+static tusb_error_t cush_validate_paras(uint8_t dev_addr, uint16_t vendor_id, uint16_t product_id, void * p_buffer, uint16_t length)
+{
+  if ( !tusbh_custom_is_mounted(dev_addr, vendor_id, product_id) )
+  {
+    return TUSB_ERROR_DEVICE_NOT_READY;
+  }
+
+  TU_ASSERT( p_buffer != NULL && length != 0, TUSB_ERROR_INVALID_PARA);
+
+  return TUSB_ERROR_NONE;
+}
+//--------------------------------------------------------------------+
+// APPLICATION API (need to check parameters)
+//--------------------------------------------------------------------+
+tusb_error_t tusbh_custom_read(uint8_t dev_addr, uint16_t vendor_id, uint16_t product_id, void * p_buffer, uint16_t length)
+{
+  TU_ASSERT_ERR( cush_validate_paras(dev_addr, vendor_id, product_id, p_buffer, length) );
+
+  if ( !hcd_pipe_is_idle(custom_interface[dev_addr-1].pipe_in) )
+  {
+    return TUSB_ERROR_INTERFACE_IS_BUSY;
+  }
+
+  (void) usbh_edpt_xfer( custom_interface[dev_addr-1].pipe_in, p_buffer, length);
+
+  return TUSB_ERROR_NONE;
+}
+
+tusb_error_t tusbh_custom_write(uint8_t dev_addr, uint16_t vendor_id, uint16_t product_id, void const * p_data, uint16_t length)
+{
+  TU_ASSERT_ERR( cush_validate_paras(dev_addr, vendor_id, product_id, p_data, length) );
+
+  if ( !hcd_pipe_is_idle(custom_interface[dev_addr-1].pipe_out) )
+  {
+    return TUSB_ERROR_INTERFACE_IS_BUSY;
+  }
+
+  (void) usbh_edpt_xfer( custom_interface[dev_addr-1].pipe_out, p_data, length);
+
+  return TUSB_ERROR_NONE;
+}
+
+//--------------------------------------------------------------------+
+// USBH-CLASS API
+//--------------------------------------------------------------------+
+void cush_init(void)
+{
+  tu_memclr(&custom_interface, sizeof(custom_interface_info_t) * CFG_TUH_DEVICE_MAX);
+}
+
+tusb_error_t cush_open_subtask(uint8_t dev_addr, tusb_desc_interface_t const *p_interface_desc, uint16_t *p_length)
+{
+  // FIXME quick hack to test lpc1k custom class with 2 bulk endpoints
+  uint8_t const *p_desc = (uint8_t const *) p_interface_desc;
+  p_desc = tu_desc_next(p_desc);
+
+  //------------- Bulk Endpoints Descriptor -------------//
+  for(uint32_t i=0; i<2; i++)
+  {
+    tusb_desc_endpoint_t const *p_endpoint = (tusb_desc_endpoint_t const *) p_desc;
+    TU_ASSERT(TUSB_DESC_ENDPOINT == p_endpoint->bDescriptorType, TUSB_ERROR_INVALID_PARA);
+
+    pipe_handle_t * p_pipe_hdl =  ( p_endpoint->bEndpointAddress &  TUSB_DIR_IN_MASK ) ?
+                         &custom_interface[dev_addr-1].pipe_in : &custom_interface[dev_addr-1].pipe_out;
+    *p_pipe_hdl = usbh_edpt_open(dev_addr, p_endpoint, TUSB_CLASS_VENDOR_SPECIFIC);
+    TU_ASSERT ( pipehandle_is_valid(*p_pipe_hdl), TUSB_ERROR_HCD_OPEN_PIPE_FAILED );
+
+    p_desc = tu_desc_next(p_desc);
+  }
+
+  (*p_length) = sizeof(tusb_desc_interface_t) + 2*sizeof(tusb_desc_endpoint_t);
+  return TUSB_ERROR_NONE;
+}
+
+void cush_isr(pipe_handle_t pipe_hdl, xfer_result_t event)
+{
+
+}
+
+void cush_close(uint8_t dev_addr)
+{
+  tusb_error_t err1, err2;
+  custom_interface_info_t * p_interface = &custom_interface[dev_addr-1];
+
+  // TODO re-consider to check pipe valid before calling pipe_close
+  if( pipehandle_is_valid( p_interface->pipe_in ) )
+  {
+    err1 = hcd_pipe_close( p_interface->pipe_in );
+  }
+
+  if ( pipehandle_is_valid( p_interface->pipe_out ) )
+  {
+    err2 = hcd_pipe_close( p_interface->pipe_out );
+  }
+
+  tu_memclr(p_interface, sizeof(custom_interface_info_t));
+
+  TU_ASSERT(err1 == TUSB_ERROR_NONE && err2 == TUSB_ERROR_NONE, (void) 0 );
+}
+
+#endif
diff --git a/tinyusb/src/class/vendor/vendor_host.h b/tinyusb/src/class/vendor/vendor_host.h
new file mode 100755
index 00000000..07fa56c6
--- /dev/null
+++ b/tinyusb/src/class/vendor/vendor_host.h
@@ -0,0 +1,67 @@
+/* 
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+
+#ifndef _TUSB_VENDOR_HOST_H_
+#define _TUSB_VENDOR_HOST_H_
+
+#include "common/tusb_common.h"
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+typedef struct {
+  pipe_handle_t pipe_in;
+  pipe_handle_t pipe_out;
+}custom_interface_info_t;
+
+//--------------------------------------------------------------------+
+// USBH-CLASS DRIVER API
+//--------------------------------------------------------------------+
+static inline bool tusbh_custom_is_mounted(uint8_t dev_addr, uint16_t vendor_id, uint16_t product_id)
+{
+  (void) vendor_id; // TODO check this later
+  (void) product_id;
+//  return (tusbh_device_get_mounted_class_flag(dev_addr) & TU_BIT(TUSB_CLASS_MAPPED_INDEX_END-1) ) != 0;
+  return false;
+}
+
+tusb_error_t tusbh_custom_read(uint8_t dev_addr, uint16_t vendor_id, uint16_t product_id, void * p_buffer, uint16_t length);
+tusb_error_t tusbh_custom_write(uint8_t dev_addr, uint16_t vendor_id, uint16_t product_id, void const * p_data, uint16_t length);
+
+//--------------------------------------------------------------------+
+// Internal Class Driver API
+//--------------------------------------------------------------------+
+void         cush_init(void);
+tusb_error_t cush_open_subtask(uint8_t dev_addr, tusb_desc_interface_t const *p_interface_desc, uint16_t *p_length);
+void         cush_isr(pipe_handle_t pipe_hdl, xfer_result_t event);
+void         cush_close(uint8_t dev_addr);
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* _TUSB_VENDOR_HOST_H_ */