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changing usbd driver open() return type, add max_len

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only done with cdc and msc, push this interim for feedback first
This commit is contained in:
hathach
2020-05-27 19:01:59 +07:00
parent de88294e05
commit e340404968
5 changed files with 54 additions and 42 deletions
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26
src/class/cdc/cdc_device.c
View File

@@ -222,14 +222,16 @@ void cdcd_reset(uint8_t rhport)
}
}
bool cdcd_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t *p_length)
uint16_t cdcd_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t max_len)
{
// Only support ACM subclass
TU_VERIFY ( TUSB_CLASS_CDC == itf_desc->bInterfaceClass &&
CDC_COMM_SUBCLASS_ABSTRACT_CONTROL_MODEL == itf_desc->bInterfaceSubClass);
CDC_COMM_SUBCLASS_ABSTRACT_CONTROL_MODEL == itf_desc->bInterfaceSubClass, 0);
// Note: 0xFF can be used with RNDIS
TU_VERIFY(tu_within(CDC_COMM_PROTOCOL_NONE, itf_desc->bInterfaceProtocol, CDC_COMM_PROTOCOL_ATCOMMAND_CDMA));
TU_VERIFY(tu_within(CDC_COMM_PROTOCOL_NONE, itf_desc->bInterfaceProtocol, CDC_COMM_PROTOCOL_ATCOMMAND_CDMA), 0);
uint16_t len = 0;
// Find available interface
cdcd_interface_t * p_cdc = NULL;
@@ -242,29 +244,29 @@ bool cdcd_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t
break;
}
}
TU_ASSERT(p_cdc);
TU_ASSERT(p_cdc, 0);
//------------- Control Interface -------------//
p_cdc->itf_num = itf_desc->bInterfaceNumber;
uint8_t const * p_desc = tu_desc_next( itf_desc );
(*p_length) = sizeof(tusb_desc_interface_t);
len = sizeof(tusb_desc_interface_t);
// Communication Functional Descriptors
while ( TUSB_DESC_CS_INTERFACE == tu_desc_type(p_desc) )
while ( TUSB_DESC_CS_INTERFACE == tu_desc_type(p_desc) && len <= max_len )
{
(*p_length) += tu_desc_len(p_desc);
len += tu_desc_len(p_desc);
p_desc = tu_desc_next(p_desc);
}
if ( TUSB_DESC_ENDPOINT == tu_desc_type(p_desc) )
{
// notification endpoint if any
TU_ASSERT( usbd_edpt_open(rhport, (tusb_desc_endpoint_t const *) p_desc) );
TU_ASSERT( usbd_edpt_open(rhport, (tusb_desc_endpoint_t const *) p_desc), 0 );
p_cdc->ep_notif = ((tusb_desc_endpoint_t const *) p_desc)->bEndpointAddress;
(*p_length) += tu_desc_len(p_desc);
len += tu_desc_len(p_desc);
p_desc = tu_desc_next(p_desc);
}
@@ -276,15 +278,15 @@ bool cdcd_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t
p_desc = tu_desc_next(p_desc);
// Open endpoint pair
TU_ASSERT( usbd_open_edpt_pair(rhport, p_desc, 2, TUSB_XFER_BULK, &p_cdc->ep_out, &p_cdc->ep_in) );
TU_ASSERT( usbd_open_edpt_pair(rhport, p_desc, 2, TUSB_XFER_BULK, &p_cdc->ep_out, &p_cdc->ep_in), 0 );
(*p_length) += sizeof(tusb_desc_interface_t) + 2*sizeof(tusb_desc_endpoint_t);
len += sizeof(tusb_desc_interface_t) + 2*sizeof(tusb_desc_endpoint_t);
}
// Prepare for incoming data
_prep_out_transaction(cdc_id);
return true;
return len;
}
// Invoked when class request DATA stage is finished.

12
src/class/cdc/cdc_device.h
View File

@@ -229,12 +229,12 @@ static inline uint32_t tud_cdc_write_available(void)
//--------------------------------------------------------------------+
// INTERNAL USBD-CLASS DRIVER API
//--------------------------------------------------------------------+
void cdcd_init (void);
void cdcd_reset (uint8_t rhport);
bool cdcd_open (uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t *p_length);
bool cdcd_control_request (uint8_t rhport, tusb_control_request_t const * request);
bool cdcd_control_complete (uint8_t rhport, tusb_control_request_t const * request);
bool cdcd_xfer_cb (uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint32_t xferred_bytes);
void cdcd_init (void);
void cdcd_reset (uint8_t rhport);
uint16_t cdcd_open (uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t max_len);
bool cdcd_control_request (uint8_t rhport, tusb_control_request_t const * request);
bool cdcd_control_complete (uint8_t rhport, tusb_control_request_t const * request);
bool cdcd_xfer_cb (uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint32_t xferred_bytes);
#ifdef __cplusplus
}