add tinyusb

1 files changed, 249 insertions, 0 deletions

diff --git a/tinyusb/src/class/cdc/cdc_host.c b/tinyusb/src/class/cdc/cdc_host.c
new file mode 100755
index 00000000..e7eaf4d0
--- /dev/null
+++ b/tinyusb/src/class/cdc/cdc_host.c
@@ -0,0 +1,249 @@
+/* 
+ * 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_CDC)
+
+#include "host/usbh.h"
+#include "host/usbh_classdriver.h"
+
+#include "cdc_host.h"
+
+//--------------------------------------------------------------------+
+// MACRO CONSTANT TYPEDEF
+//--------------------------------------------------------------------+
+typedef struct {
+  uint8_t itf_num;
+  uint8_t itf_protocol;
+
+  uint8_t ep_notif;
+  uint8_t ep_in;
+  uint8_t ep_out;
+
+  cdc_acm_capability_t acm_capability;
+
+} cdch_data_t;
+
+//--------------------------------------------------------------------+
+// INTERNAL OBJECT & FUNCTION DECLARATION
+//--------------------------------------------------------------------+
+static cdch_data_t cdch_data[CFG_TUH_DEVICE_MAX];
+
+static inline cdch_data_t* get_itf(uint8_t dev_addr)
+{
+  return &cdch_data[dev_addr-1];
+}
+
+bool tuh_cdc_mounted(uint8_t dev_addr)
+{
+  cdch_data_t* cdc = get_itf(dev_addr);
+  return cdc->ep_in && cdc->ep_out;
+}
+
+bool tuh_cdc_is_busy(uint8_t dev_addr, cdc_pipeid_t pipeid)
+{
+  if ( !tuh_cdc_mounted(dev_addr) ) return false;
+
+  cdch_data_t const * p_cdc = get_itf(dev_addr);
+
+  switch (pipeid)
+  {
+    case CDC_PIPE_NOTIFICATION:
+      return usbh_edpt_busy(dev_addr, p_cdc->ep_notif );
+
+    case CDC_PIPE_DATA_IN:
+      return usbh_edpt_busy(dev_addr, p_cdc->ep_in );
+
+    case CDC_PIPE_DATA_OUT:
+      return usbh_edpt_busy(dev_addr, p_cdc->ep_out );
+
+    default:
+      return false;
+  }
+}
+
+//--------------------------------------------------------------------+
+// APPLICATION API (parameter validation needed)
+//--------------------------------------------------------------------+
+bool tuh_cdc_serial_is_mounted(uint8_t dev_addr)
+{
+  // TODO consider all AT Command as serial candidate
+  return tuh_cdc_mounted(dev_addr)                                         &&
+      (cdch_data[dev_addr-1].itf_protocol <= CDC_COMM_PROTOCOL_ATCOMMAND_CDMA);
+}
+
+bool tuh_cdc_send(uint8_t dev_addr, void const * p_data, uint32_t length, bool is_notify)
+{
+  (void) is_notify;
+  TU_VERIFY( tuh_cdc_mounted(dev_addr) );
+  TU_VERIFY( p_data != NULL && length, TUSB_ERROR_INVALID_PARA);
+
+  uint8_t const ep_out = cdch_data[dev_addr-1].ep_out;
+  if ( usbh_edpt_busy(dev_addr, ep_out) ) return false;
+
+  return usbh_edpt_xfer(dev_addr, ep_out, (void *) p_data, length);
+}
+
+bool tuh_cdc_receive(uint8_t dev_addr, void * p_buffer, uint32_t length, bool is_notify)
+{
+  (void) is_notify;
+  TU_VERIFY( tuh_cdc_mounted(dev_addr) );
+  TU_VERIFY( p_buffer != NULL && length, TUSB_ERROR_INVALID_PARA);
+
+  uint8_t const ep_in = cdch_data[dev_addr-1].ep_in;
+  if ( usbh_edpt_busy(dev_addr, ep_in) ) return false;
+
+  return usbh_edpt_xfer(dev_addr, ep_in, p_buffer, length);
+}
+
+bool tuh_cdc_set_control_line_state(uint8_t dev_addr, bool dtr, bool rts, tuh_control_complete_cb_t complete_cb)
+{
+  cdch_data_t const * p_cdc = get_itf(dev_addr);
+  tusb_control_request_t const request =
+  {
+    .bmRequestType_bit =
+    {
+      .recipient = TUSB_REQ_RCPT_INTERFACE,
+      .type      = TUSB_REQ_TYPE_CLASS,
+      .direction = TUSB_DIR_OUT
+    },
+    .bRequest = CDC_REQUEST_SET_CONTROL_LINE_STATE,
+    .wValue   = (rts ? 2 : 0) | (dtr ? 1 : 0),
+    .wIndex   = p_cdc->itf_num,
+    .wLength  = 0
+  };
+
+  TU_ASSERT( tuh_control_xfer(dev_addr, &request, NULL, complete_cb) );
+  return true;
+}
+
+//--------------------------------------------------------------------+
+// USBH-CLASS DRIVER API
+//--------------------------------------------------------------------+
+void cdch_init(void)
+{
+  tu_memclr(cdch_data, sizeof(cdch_data));
+}
+
+bool cdch_open(uint8_t rhport, uint8_t dev_addr, tusb_desc_interface_t const *itf_desc, uint16_t max_len)
+{
+  (void) max_len;
+
+  // Only support ACM subclass
+  // Protocol 0xFF can be RNDIS device for windows XP
+  TU_VERIFY( TUSB_CLASS_CDC                           == itf_desc->bInterfaceClass &&
+             CDC_COMM_SUBCLASS_ABSTRACT_CONTROL_MODEL == itf_desc->bInterfaceSubClass &&
+             0xFF                                     != itf_desc->bInterfaceProtocol);
+
+  cdch_data_t * p_cdc = get_itf(dev_addr);
+
+  p_cdc->itf_num      = itf_desc->bInterfaceNumber;
+  p_cdc->itf_protocol = itf_desc->bInterfaceProtocol;
+
+  //------------- Communication Interface -------------//
+  uint16_t drv_len = tu_desc_len(itf_desc);
+  uint8_t const * p_desc = tu_desc_next(itf_desc);
+
+  // Communication Functional Descriptors
+  while( TUSB_DESC_CS_INTERFACE == tu_desc_type(p_desc) && drv_len <= max_len )
+  {
+    if ( CDC_FUNC_DESC_ABSTRACT_CONTROL_MANAGEMENT == cdc_functional_desc_typeof(p_desc) )
+    {
+      // save ACM bmCapabilities
+      p_cdc->acm_capability = ((cdc_desc_func_acm_t const *) p_desc)->bmCapabilities;
+    }
+
+    drv_len += tu_desc_len(p_desc);
+    p_desc = tu_desc_next(p_desc);
+  }
+
+  if ( TUSB_DESC_ENDPOINT == tu_desc_type(p_desc) )
+  {
+    // notification endpoint
+    tusb_desc_endpoint_t const * desc_ep = (tusb_desc_endpoint_t const *) p_desc;
+
+    TU_ASSERT( usbh_edpt_open(rhport, dev_addr, desc_ep) );
+    p_cdc->ep_notif = desc_ep->bEndpointAddress;
+
+    drv_len += tu_desc_len(p_desc);
+    p_desc = tu_desc_next(p_desc);
+  }
+
+  //------------- Data Interface (if any) -------------//
+  if ( (TUSB_DESC_INTERFACE == tu_desc_type(p_desc)) &&
+       (TUSB_CLASS_CDC_DATA == ((tusb_desc_interface_t const *) p_desc)->bInterfaceClass) )
+  {
+    // next to endpoint descriptor
+    drv_len += tu_desc_len(p_desc);
+    p_desc = tu_desc_next(p_desc);
+
+    // data endpoints expected to be in pairs
+    for(uint32_t i=0; i<2; i++)
+    {
+      tusb_desc_endpoint_t const *desc_ep = (tusb_desc_endpoint_t const *) p_desc;
+      TU_ASSERT(TUSB_DESC_ENDPOINT == desc_ep->bDescriptorType && TUSB_XFER_BULK == desc_ep->bmAttributes.xfer);
+
+      TU_ASSERT(usbh_edpt_open(rhport, dev_addr, desc_ep));
+
+      if ( tu_edpt_dir(desc_ep->bEndpointAddress) == TUSB_DIR_IN )
+      {
+        p_cdc->ep_in = desc_ep->bEndpointAddress;
+      }else
+      {
+        p_cdc->ep_out = desc_ep->bEndpointAddress;
+      }
+
+      drv_len += tu_desc_len(p_desc);
+      p_desc = tu_desc_next( p_desc );
+    }
+  }
+
+  return true;
+}
+
+bool cdch_set_config(uint8_t dev_addr, uint8_t itf_num)
+{
+  (void) dev_addr; (void) itf_num;
+  return true;
+}
+
+bool cdch_xfer_cb(uint8_t dev_addr, uint8_t ep_addr, xfer_result_t event, uint32_t xferred_bytes)
+{
+  (void) ep_addr;
+  tuh_cdc_xfer_isr( dev_addr, event, 0, xferred_bytes );
+  return true;
+}
+
+void cdch_close(uint8_t dev_addr)
+{
+  TU_VERIFY(dev_addr <= CFG_TUH_DEVICE_MAX, );
+
+  cdch_data_t * p_cdc = get_itf(dev_addr);
+  tu_memclr(p_cdc, sizeof(cdch_data_t));
+}
+
+#endif