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Add SAMD21 and SAMD51 support for CircuitPython.

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The ProtoThreads style subtasks were removed because it led to
extremely unclear control flow. RTOSes can be used if threading is
needed.

Also added some additional functionality to MSC to support dynamic
LUNs and read-only LUNs.
This commit is contained in:
Scott Shawcroft
2018-10-24 23:55:10 -07:00
parent cb9bcce6a2
commit c582c0fda9
16 changed files with 1051 additions and 208 deletions
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82
src/device/usbd.c
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@@ -239,25 +239,25 @@ void usbd_task( void* param)
OSAL_TASK_END
}
extern uint32_t setup_count;
static tusb_error_t usbd_main_st(void)
{
static dcd_event_t event;
OSAL_SUBTASK_BEGIN
dcd_event_t event;
tusb_error_t err = TUSB_ERROR_NONE;
// Loop until there is no more events in the queue
while (1)
while (_usbd_q->count > 0)
{
uint32_t err;
err = TUSB_ERROR_NONE;
tu_memclr(&event, sizeof(dcd_event_t));
osal_queue_receive(_usbd_q, &event, OSAL_TIMEOUT_WAIT_FOREVER, &err);
err = osal_queue_receive(_usbd_q, &event);
if (err != TUSB_ERROR_NONE) {
break;
}
if ( DCD_EVENT_SETUP_RECEIVED == event.event_id )
{
STASK_INVOKE( proc_control_request_st(event.rhport, &event.setup_received), err );
proc_control_request_st(event.rhport, &event.setup_received);
}
else if (DCD_EVENT_XFER_COMPLETE == event.event_id)
{
@@ -267,7 +267,7 @@ static tusb_error_t usbd_main_st(void)
if (drv_id < USBD_CLASS_DRIVER_COUNT)
{
usbd_class_drivers[drv_id].xfer_cb( event.rhport, ep_addr, (tusb_event_t) event.xfer_complete.result, event.xfer_complete.len);
usbd_class_drivers[drv_id].xfer_cb( event.rhport, ep_addr, event.xfer_complete.result, event.xfer_complete.len);
}
}
else if (DCD_EVENT_BUS_RESET == event.event_id)
@@ -304,7 +304,7 @@ static tusb_error_t usbd_main_st(void)
}
}
OSAL_SUBTASK_END
return err;
}
//--------------------------------------------------------------------+
@@ -312,10 +312,7 @@ static tusb_error_t usbd_main_st(void)
//--------------------------------------------------------------------+
static tusb_error_t proc_control_request_st(uint8_t rhport, tusb_control_request_t const * const p_request)
{
OSAL_SUBTASK_BEGIN
ATTR_UNUSED tusb_error_t error;
error = TUSB_ERROR_NONE;
tusb_error_t error = TUSB_ERROR_NONE;
//------------- Standard Request e.g in enumeration -------------//
if( TUSB_REQ_RCPT_DEVICE == p_request->bmRequestType_bit.recipient &&
@@ -326,9 +323,10 @@ static tusb_error_t proc_control_request_st(uint8_t rhport, tusb_control_request
uint8_t const * buffer = NULL;
uint16_t const len = get_descriptor(rhport, p_request, &buffer);
if ( len )
{
STASK_ASSERT( len <= CFG_TUD_CTRL_BUFSIZE );
TU_ASSERT( len <= CFG_TUD_CTRL_BUFSIZE );
memcpy(_usbd_ctrl_buf, buffer, len);
usbd_control_xfer_st(rhport, p_request->bmRequestType_bit.direction, _usbd_ctrl_buf, len);
}else
@@ -365,7 +363,7 @@ static tusb_error_t proc_control_request_st(uint8_t rhport, tusb_control_request
{
if (_usbd_dev.itf2drv[ tu_u16_low(p_request->wIndex) ] < USBD_CLASS_DRIVER_COUNT)
{
STASK_INVOKE( usbd_class_drivers[ _usbd_dev.itf2drv[ tu_u16_low(p_request->wIndex) ] ].control_req_st(rhport, p_request), error );
error = usbd_class_drivers[ _usbd_dev.itf2drv[ tu_u16_low(p_request->wIndex) ] ].control_req_st(rhport, p_request);
}else
{
dcd_control_stall(rhport); // Stall unsupported request
@@ -406,8 +404,10 @@ static tusb_error_t proc_control_request_st(uint8_t rhport, tusb_control_request
{
dcd_control_stall(rhport); // Stall unsupported request
}
OSAL_SUBTASK_END
if (error != TUSB_ERROR_NONE) {
dcd_control_stall(rhport); // Stall errored requests
}
return error;
}
// Process Set Configure Request
@@ -548,8 +548,6 @@ static void mark_interface_endpoint(uint8_t const* p_desc, uint16_t desc_len, ui
//--------------------------------------------------------------------+
void dcd_event_handler(dcd_event_t const * event, bool in_isr)
{
uint8_t const rhport = event->rhport;
switch (event->event_id)
{
case DCD_EVENT_BUS_RESET:
@@ -590,9 +588,49 @@ void dcd_event_handler(dcd_event_t const * event, bool in_isr)
}
}
void dcd_event_handler(dcd_event_t const * event, bool in_isr);
// helper to send bus signal event
void dcd_event_bus_signal (uint8_t rhport, dcd_eventid_t eid, bool in_isr)
{
dcd_event_t event = { .rhport = 0, .event_id = eid, };
dcd_event_handler(&event, in_isr);
}
// helper to send setup received
void dcd_event_setup_received(uint8_t rhport, uint8_t const * setup, bool in_isr)
{
dcd_event_t event = { .rhport = 0, .event_id = DCD_EVENT_SETUP_RECEIVED };
memcpy(&event.setup_received, setup, 8);
dcd_event_handler(&event, true);
}
// helper to send transfer complete event
void dcd_event_xfer_complete (uint8_t rhport, uint8_t ep_addr, uint32_t xferred_bytes, uint8_t result, bool in_isr)
{
dcd_event_t event = { .rhport = 0, .event_id = DCD_EVENT_XFER_COMPLETE };
event.xfer_complete.ep_addr = ep_addr;
event.xfer_complete.len = xferred_bytes;
event.xfer_complete.result = result;
dcd_event_handler(&event, in_isr);
}
//--------------------------------------------------------------------+
// Helper
//--------------------------------------------------------------------+
uint32_t usbd_control_xfer_st(uint8_t _rhport, uint8_t _dir, uint8_t* _buffer, uint16_t _len) {
uint32_t err = TUSB_ERROR_NONE;
if (_len) {
dcd_control_xfer(_rhport, _dir, (uint8_t*) _buffer, _len);
}
dcd_control_status(_rhport, _dir);
return err;
}
tusb_error_t usbd_open_edpt_pair(uint8_t rhport, tusb_desc_endpoint_t const* p_desc_ep, uint8_t xfer_type, uint8_t* ep_out, uint8_t* ep_in)
{
for(int i=0; i<2; i++)