void usb_host_hid_ctrl_callback
(
/* [IN] pointer to pipe */
_usb_pipe_handle pipe_handle,
/* [IN] user-defined parameter */
pointer2 user_parm,
/* [IN] buffer address */
uchar_ptr buffer,
/* [IN] length of data transferred */
uint_32 buflen,
/* [IN] status, hopefully USB_OK or USB_DONE */
uint_32 status
)
{ /* Body */
if (status == USBERR_ENDPOINT_STALLED) {
printf("\nHID Set_Protocol Request BOOT is not supported!\n");
//fflush(stdout);
}
else if (status) {
printf("\nHID Set_Protocol Request BOOT failed!: 0x%x ... END!\n", status);
//fflush(stdout);
exit(1);
} /* Endif */
if(hid_device.DEV_STATE == USB_DEVICE_SETTING_PROTOCOL)
hid_device.DEV_STATE = USB_DEVICE_INUSE;
/* notify application that status has changed */
_usb_event_set(&USB_Event, USB_EVENT_CTRL);
} /* Endbody */
static void usb_class_cdc_ctrl_acm_callback
(
/* [IN] pointer to pipe */
_usb_pipe_handle pipe,
/* [IN] user-defined parameter */
pointer param,
/* [IN] buffer address */
pointer buffer,
/* [IN] length of data transferred */
uint_32 len,
/* [IN] status, hopefully USB_OK or USB_DONE */
uint_32 status
)
{ /* Body */
CLASS_CALL_STRUCT_PTR acm_instance = (CLASS_CALL_STRUCT_PTR) param;
USB_ACM_CLASS_INTF_STRUCT_PTR if_ptr;
UNUSED(pipe)
UNUSED(buffer)
UNUSED(len)
UNUSED(status)
if_ptr = (USB_ACM_CLASS_INTF_STRUCT_PTR) acm_instance->class_intf_handle;
_usb_event_set(&if_ptr->acm_event, USB_ACM_CTRL_PIPE_FREE); /* mark we are not using interrupt pipe */
} /*EndBody */
static void usb_class_cdc_in_data_callback
(
/* [IN] pointer to pipe */
_usb_pipe_handle pipe,
/* [IN] user-defined parameter */
pointer param,
/* [IN] buffer address */
pointer buffer,
/* [IN] length of data transferred */
uint_32 len,
/* [IN] status, hopefully USB_OK or USB_DONE */
uint_32 status
)
{ /* Body */
FILE_CDC_PTR fd_ptr = (FILE_CDC_PTR) param;
CLASS_CALL_STRUCT_PTR data_instance = (CLASS_CALL_STRUCT_PTR) fd_ptr->DEV_PTR->DRIVER_INIT_PTR;
USB_DATA_CLASS_INTF_STRUCT_PTR if_ptr;
CLASS_CALL_STRUCT_PTR acm_instance;
USB_ACM_CLASS_INTF_STRUCT_PTR acm_if_ptr;
UNUSED(pipe)
if_ptr = (USB_DATA_CLASS_INTF_STRUCT_PTR) data_instance->class_intf_handle;
acm_instance = if_ptr->BOUND_CONTROL_INTERFACE;
if ((acm_instance == NULL) || !usb_host_class_intf_validate(acm_instance))
len = 0;
else if (((CDC_SERIAL_INIT_PTR) fd_ptr->FLAGS)->FLAGS & USB_UART_HW_FLOW) {
acm_if_ptr = (USB_ACM_CLASS_INTF_STRUCT_PTR) acm_instance->class_intf_handle;
/* check the state of DCD signal for HW flow control files */
if (!(acm_if_ptr->interrupt_buffer.bmStates & USB_ACM_STATE_RX_CARRIER))
len = 0; /* ignore all received bytes is DCD is not set */
/* check the state of DTR signal */
if (!(acm_if_ptr->ctrl_state.bmStates[1] & USB_ACM_LINE_STATE_DTR))
len = 0; /* ignore all sent bytes if DTR is not set */
}
/* in the case we have less data than expected, status is not USB_OK, but buffer is not NULL */
if ((status != USB_OK) && (buffer == NULL)) /* if no data received */
len = 0;
if (if_ptr->RX_BUFFER_DRV != NULL)
if_ptr->RX_BUFFER_DRV += len;
if_ptr->RX_READ = len;
_usb_event_set(&if_ptr->data_event, USB_DATA_READ_COMPLETE); /* signal that we have completed transfer on input pipe */
} /*EndBody */
void usb_class_cdc_acm_init
(
/* [IN] structure with USB pipe information on the interface */
PIPE_BUNDLE_STRUCT_PTR pbs_ptr,
/* [IN] acm call struct pointer2 */
CLASS_CALL_STRUCT_PTR ccs_ptr
)
{ /* Body */
USB_ACM_CLASS_INTF_STRUCT_PTR acm_anchor = NULL;
USB_ACM_CLASS_INTF_STRUCT_PTR if_ptr = ccs_ptr->class_intf_handle;
USB_STATUS status;
/* Make sure the device is still attached */
USB_lock();
status = usb_host_class_intf_init(pbs_ptr, if_ptr, &acm_anchor_abstract);
if (status == USB_OK) {
/*
** We generate a code_key based on the attached device. This is used to
** verify that the device has not been detached and replaced with another.
*/
ccs_ptr->code_key = 0;
ccs_ptr->code_key = usb_host_class_intf_validate(ccs_ptr);
if_ptr->CDC_G.IFNUM = ((INTERFACE_DESCRIPTOR_PTR)if_ptr->CDC_G.G.intf_handle)->bInterfaceNumber;
if_ptr->interrupt_pipe = usb_hostdev_get_pipe_handle(pbs_ptr, USB_INTERRUPT_PIPE, 0);
if (USB_OK != (status = _usb_event_init(&if_ptr->acm_event))) {
status = USBERR_INIT_FAILED;
}
else {
/* prepare events to be auto or manual */
//_lwevent_set_auto_clear(&if_ptr->acm_event, USB_ACM_CTRL_PIPE_FREE | USB_ACM_INT_PIPE_FREE);
/* pre-set events */
_usb_event_set(&if_ptr->acm_event, USB_ACM_CTRL_PIPE_FREE | USB_ACM_INT_PIPE_FREE);
}
} /* Endif */
/* Signal that an error has occured by setting the "code_key" */
if (status) {
ccs_ptr->code_key = 0;
} /* Endif */
USB_unlock();
} /* Endbody */
/*FUNCTION*----------------------------------------------------------------
*
* Function Name : IRQ_ISR
* Returned Value : none
* Comments : IRQ interrupt service routine
*
*
*END*--------------------------------------------------------------------*/
void interrupt 64 IRQ_ISR(void)
{
if(USB_DEVICE_INTERFACED == audio_stream.DEV_STATE)
{
play = (boolean)(1 - play);
/* play */
if (TRUE == play)
{
printf("Playing ...\r\n");
_usb_event_set(&USB_Event, USB_EVENT_RECEIVED_DATA);
EnableTimer1Interrupt();
}
/* stop */
else
{
printf("\nPaused.\n");
DisableTimer1Interrupt();
}
}
IRQ_SC |= IRQ_SC_IRQF_MASK | IRQ_SC_IRQACK_MASK; /* clear KBI interrupt */
}
void usb_host_hid_recv_callback
(
/* [IN] pointer to pipe */
_usb_pipe_handle pipe_handle,
/* [IN] user-defined parameter */
pointer2 user_parm,
/* [IN] buffer address */
uchar_ptr buffer,
/* [IN] length of data transferred */
uint_32 buflen,
/* [IN] status, hopefully USB_OK or USB_DONE */
uint_32 status
)
{ /* Body */
/* notify application that data are available */
_usb_event_set(&USB_Event, USB_EVENT_DATA);
}
USB_STATUS usb_class_cdc_set_acm_ctrl_state
(
/* [IN] The communication device data instance structure */
CLASS_CALL_STRUCT_PTR ccs_ptr,
/* [IN] DTR state to set */
uint_8 dtr,
/* [IN] RTS state to set */
uint_8 rts
)
{ /* Body */
USB_DATA_CLASS_INTF_STRUCT_PTR if_data_ptr;
USB_ACM_CLASS_INTF_STRUCT_PTR if_acm_ptr;
CLASS_CALL_STRUCT_PTR acm_instance;
USB_STATUS status = USBERR_NO_INTERFACE;
USB_EVENT_STRUCT_PTR event;
CDC_COMMAND cmd;
USB_lock();
/* Validity checking: for data interface */
if (usb_host_class_intf_validate(ccs_ptr)) {
if_data_ptr = (USB_DATA_CLASS_INTF_STRUCT_PTR)ccs_ptr->class_intf_handle;
acm_instance = if_data_ptr->BOUND_CONTROL_INTERFACE;
if (usb_host_class_intf_validate(acm_instance)) {
if_acm_ptr = (USB_ACM_CLASS_INTF_STRUCT_PTR) if_data_ptr->BOUND_CONTROL_INTERFACE->class_intf_handle;
if (if_acm_ptr->acm_desc->bmCapabilities & USB_ACM_CAP_LINE_CODING) {
event = &if_acm_ptr->acm_event;
USB_unlock(); /* we must wait until ctrl pipe is used */
#if !HIGH_SPEED_DEVICE
while(USB_EVENT_NOT_SET == _usb_event_wait_ticks(event, USB_ACM_CTRL_PIPE_FREE | USB_ACM_DETACH, FALSE, 0)){
_usb_khci_task();
}
#endif
_usb_event_clear(event, USB_ACM_CTRL_PIPE_FREE | USB_ACM_DETACH);
USB_lock();
if (usb_host_class_intf_validate(acm_instance)) {
cmd.CLASS_PTR = ccs_ptr;
cmd.CALLBACK_FN = (tr_callback)usb_class_cdc_ctrl_acm_callback;
cmd.CALLBACK_PARAM = acm_instance;
if_acm_ptr->ctrl_state.bmStates[0] = (uint_8)(dtr ? USB_ACM_LINE_STATE_DTR : 0);
if_acm_ptr->ctrl_state.bmStates[0] |= rts ? USB_ACM_LINE_STATE_RTS : 0;
status = usb_class_cdc_cntrl_common(&cmd, if_acm_ptr,
REQ_TYPE_OUT | REQ_TYPE_CLASS | REQ_TYPE_INTERFACE,
USB_CDC_SET_CTRL_LINE_STATE, * ((uint_16 *) &if_acm_ptr->ctrl_state), 0, NULL);
}
}
else
status = USBERR_INVALID_BMREQ_TYPE;
} /* Endif */
} /* Endif */
USB_unlock();
#if !HIGH_SPEED_DEVICE
while(USB_EVENT_NOT_SET == _usb_event_wait_ticks(event, USB_ACM_CTRL_PIPE_FREE | USB_ACM_DETACH, FALSE, 0)){
_usb_khci_task();
}
#endif
_usb_event_clear(event, USB_ACM_CTRL_PIPE_FREE | USB_ACM_DETACH);
_usb_event_set(event, USB_ACM_CTRL_PIPE_FREE);
return status;
} /* Endbody */
USB_STATUS usb_class_cdc_get_acm_line_coding
(
/* [IN] The communication device data instance structure */
CLASS_CALL_STRUCT_PTR ccs_ptr,
/* [IN] Where to store coding */
USB_CDC_UART_CODING_PTR uart_coding_ptr
)
{ /* Body */
USB_DATA_CLASS_INTF_STRUCT_PTR if_data_ptr;
USB_ACM_CLASS_INTF_STRUCT_PTR if_acm_ptr;
CLASS_CALL_STRUCT_PTR acm_instance;
USB_STATUS status = USBERR_NO_INTERFACE;
USB_EVENT_STRUCT_PTR event;
CDC_COMMAND cmd;
USB_lock();
/* Validity checking: for data interface */
if (usb_host_class_intf_validate(ccs_ptr)) {
if_data_ptr = (USB_DATA_CLASS_INTF_STRUCT_PTR)ccs_ptr->class_intf_handle;
acm_instance = if_data_ptr->BOUND_CONTROL_INTERFACE;
if (usb_host_class_intf_validate(if_data_ptr->BOUND_CONTROL_INTERFACE)) {
if_acm_ptr = (USB_ACM_CLASS_INTF_STRUCT_PTR) if_data_ptr->BOUND_CONTROL_INTERFACE->class_intf_handle;
if (if_acm_ptr->acm_desc->bmCapabilities & USB_ACM_CAP_LINE_CODING) {
event = &if_acm_ptr->acm_event;
USB_unlock(); /* we must wait until ctrl pipe is used */
#if !HIGH_SPEED_DEVICE
while(USB_EVENT_NOT_SET == _usb_event_wait_ticks(event, USB_ACM_CTRL_PIPE_FREE | USB_ACM_DETACH, FALSE, 0)){
_usb_khci_task();
}
#endif
_usb_event_clear(event, USB_ACM_CTRL_PIPE_FREE | USB_ACM_DETACH);
USB_lock();
if (usb_host_class_intf_validate(acm_instance)) {
cmd.CLASS_PTR = ccs_ptr;
cmd.CALLBACK_FN = (tr_callback)usb_class_cdc_ctrl_acm_callback;
cmd.CALLBACK_PARAM = acm_instance;
status = usb_class_cdc_cntrl_common(&cmd, if_acm_ptr,
REQ_TYPE_IN | REQ_TYPE_CLASS | REQ_TYPE_INTERFACE,
USB_CDC_GET_LINE_CODING, 0, 7 /* sizeof(USB_CDC_UART_CODING)*/, (uchar_ptr)uart_coding_ptr);
}
}
else
status = USBERR_INVALID_BMREQ_TYPE;
} /* Endif */
} /* Endif */
USB_unlock();
#if !HIGH_SPEED_DEVICE
while(USB_EVENT_NOT_SET == _usb_event_wait_ticks(event, USB_ACM_CTRL_PIPE_FREE | USB_ACM_DETACH, FALSE, 0)){
_usb_khci_task();
}
#endif
_usb_event_clear(event, USB_ACM_CTRL_PIPE_FREE | USB_ACM_DETACH);
_usb_event_set(event, USB_ACM_CTRL_PIPE_FREE);
return status;
} /* Endbody */
void usb_host_hid_mouse_event
(
/* [IN] pointer to device instance */
_usb_device_instance_handle dev_handle,
/* [IN] pointer to interface descriptor */
_usb_interface_descriptor_handle intf_handle,
/* [IN] code number for event causing callback */
uint_32 event_code
)
{ /* Body */
INTERFACE_DESCRIPTOR_PTR intf_ptr = (INTERFACE_DESCRIPTOR_PTR)intf_handle;
switch (event_code) {
case USB_ATTACH_EVENT:
printf("----- Attach Event -----\n");
/* Drop through into attach, same processing */
case USB_CONFIG_EVENT:
printf("State = %d", hid_device.DEV_STATE);
printf(" Class = %d", intf_ptr->bInterfaceClass);
printf(" SubClass = %d", intf_ptr->bInterfaceSubClass);
printf(" Protocol = %d\n", intf_ptr->bInterfaceProtocol);
////fflush(stdout);
if (hid_device.DEV_STATE == USB_DEVICE_IDLE) {
hid_device.DEV_HANDLE = dev_handle;
hid_device.INTF_HANDLE = intf_handle;
hid_device.DEV_STATE = USB_DEVICE_ATTACHED;
} else {
printf("HID device already attached - DEV_STATE = %d\n", hid_device.DEV_STATE);
////fflush(stdout);
} /* Endif */
break;
case USB_INTF_EVENT:
printf("----- Interfaced Event -----\n");
hid_device.DEV_STATE = USB_DEVICE_INTERFACED;
break ;
case USB_DETACH_EVENT:
/* Use only the interface with desired protocol */
printf("----- Detach Event -----\n");
printf("State = %d", hid_device.DEV_STATE);
printf(" Class = %d", intf_ptr->bInterfaceClass);
printf(" SubClass = %d", intf_ptr->bInterfaceSubClass);
printf(" Protocol = %d\n", intf_ptr->bInterfaceProtocol);
////fflush(stdout);
hid_device.DEV_HANDLE = NULL;
hid_device.INTF_HANDLE = NULL;
hid_device.DEV_STATE = USB_DEVICE_DETACHED;
break;
default:
printf("HID Device state = %d??\n", hid_device.DEV_STATE);
////fflush(stdout);
hid_device.DEV_STATE = USB_DEVICE_IDLE;
break;
} /* EndSwitch */
/* notify application that status has changed */
_usb_event_set(&USB_Event, USB_EVENT_CTRL);
} /* Endbody */
void usb_class_cdc_data_init
(
/* [IN] structure with USB pipe information on the interface */
PIPE_BUNDLE_STRUCT_PTR pbs_ptr,
/* [IN] acm call struct pointer */
CLASS_CALL_STRUCT_PTR ccs_ptr
)
{ /* Body */
USB_DATA_CLASS_INTF_STRUCT_PTR if_ptr = ccs_ptr->class_intf_handle;
ENDPOINT_DESCRIPTOR_PTR in_endpt, out_endpt;
USB_STATUS status;
/* Make sure the device is still attached */
USB_lock();
status = usb_host_class_intf_init(pbs_ptr, if_ptr, &data_anchor_abstract);
if (status == USB_OK) {
/*
** We generate a code_key based on the attached device. This is used to
** verify that the device has not been detached and replaced with another.
*/
ccs_ptr->code_key = 0;
ccs_ptr->code_key = usb_host_class_intf_validate(ccs_ptr);
if_ptr->CDC_G.IFNUM = ((INTERFACE_DESCRIPTOR_PTR)if_ptr->CDC_G.G.intf_handle)->bInterfaceNumber;
if_ptr->in_pipe = usb_hostdev_get_pipe_handle(pbs_ptr, USB_BULK_PIPE, USB_RECV);
if_ptr->out_pipe = usb_hostdev_get_pipe_handle(pbs_ptr, USB_BULK_PIPE, USB_SEND);
if ((if_ptr->in_pipe == NULL) && (if_ptr->out_pipe == NULL))
status = USBERR_OPEN_PIPE_FAILED;
else if (USB_OK != (status = _usb_event_init(&if_ptr->data_event)))
status = USBERR_INIT_FAILED;
else {
/* prepare events to be auto or manual */
//_lwevent_set_auto_clear(&if_ptr->data_event, USB_DATA_READ_PIPE_FREE | USB_DATA_SEND_PIPE_FREE);
/* pre-set events */
_usb_event_set(&if_ptr->data_event, USB_DATA_READ_PIPE_FREE | USB_DATA_SEND_PIPE_FREE);
if (if_ptr->out_pipe) {
/* Don't use host - predefined constant for NAK_COUNT...
** NOTE!!!
** This hack is not very clean. We need to maximize number of retries to minimize the time of
** transaction (minimize task's time while waiting for 1 transaction to be done (with or without data))
** The time depends on user expecatation of the read() latency, on the delay between 2 NAKs and on number
** of NAKs to be performed.
** The workaround is to limit amount of retries for the pipe maximally to 3.
** Number 3 is hard-coded here for now.
*/
if (((PIPE_DESCRIPTOR_STRUCT_PTR) if_ptr->in_pipe)->NAK_COUNT > 3)
((PIPE_DESCRIPTOR_STRUCT_PTR) if_ptr->in_pipe)->NAK_COUNT = 3; /* don't use host - predefined constant */
}
if (if_ptr->in_pipe) {
/* The same as for OUT pipe applies here */
if (((PIPE_DESCRIPTOR_STRUCT_PTR) if_ptr->out_pipe)->NAK_COUNT > 3)
((PIPE_DESCRIPTOR_STRUCT_PTR) if_ptr->out_pipe)->NAK_COUNT = 3; /* don't use host - predefined constant */
/* initialize buffer */
/* size of buffer equals to the size of endpoint data size */
if_ptr->RX_BUFFER_SIZE = ((PIPE_INIT_PARAM_STRUCT_PTR) (if_ptr->in_pipe))->MAX_PACKET_SIZE;
if (NULL == (if_ptr->RX_BUFFER = USB_mem_alloc_zero(if_ptr->RX_BUFFER_SIZE))) {
status = USBERR_ALLOC;
}
else {
/* initialize members */
if_ptr->RX_BUFFER_APP = if_ptr->RX_BUFFER_DRV = if_ptr->RX_BUFFER;
}
}
}
} /* Endif */
/* Signal that an error has occured by setting the "code_key" */
if (status) {
ccs_ptr->code_key = 0;
} /* Endif */
USB_unlock();
} /* Endbody */
void usb_host_cdc_data_event
(
/* [IN] pointer to device instance */
_usb_device_instance_handle dev_handle,
/* [IN] pointer to interface descriptor */
_usb_interface_descriptor_handle intf_handle,
/* [IN] code number for event causing callback */
uint_32 event_code
)
{ /* Body */
INTERFACE_DESCRIPTOR_PTR intf_ptr =
(INTERFACE_DESCRIPTOR_PTR)intf_handle;
DATA_DEVICE_STRUCT_PTR data_device;
fflush(stdout);
switch (event_code)
{
case USB_CONFIG_EVENT:
/* Drop through into attach, same processing */
case USB_ATTACH_EVENT:
{
/* This data interface could be controlled by some control interface,
* which could be already initialized (or not). We have to find
* that interface. Then we need to bind this interface with
* found control interface. */
INTERFACE_DESCRIPTOR_PTR if_desc;
if (USB_OK != usb_class_cdc_get_ctrl_descriptor(dev_handle,
intf_handle,
&if_desc))
break;
/* interface descriptor found, so we can allocate new data device */
if (NULL == (data_device = USB_mem_alloc_zero(sizeof(DATA_DEVICE_STRUCT))))
break;
/* initializes interface members and selects it */
if (USB_OK != _usb_hostdev_select_interface(dev_handle,
intf_handle, (pointer)&data_device->CLASS_INTF))
{
free(data_device);
break;
}
/* binds this data interface with its control interface, if possible */
if (USB_OK != usb_class_cdc_bind_acm_interface((pointer)&data_device->CLASS_INTF,
if_desc))
{
free(data_device);
break;
}
#if 0 /* << EST */
printf("----- CDC data interface attach event -----\n");
fflush(stdout);
printf("State = attached");
printf(" Class = %%d", intf_ptr->bInterfaceClass);
printf(" SubClass = %%d", intf_ptr->bInterfaceSubClass);
printf(" Protocol = %%d\n", intf_ptr->bInterfaceProtocol);
fflush(stdout);
#endif
check_open = 0;
break;
}
case USB_INTF_EVENT:
{
CLASS_CALL_STRUCT_PTR data_parser;
//USB_CDC_UART_CODING uart_coding;
#if 0 /* << EST */
fflush(stdout);
#endif
if (NULL == (data_parser = usb_class_cdc_get_data_interface(intf_handle)))
break;
if (USB_OK == usb_class_cdc_install_driver(data_parser, device_name))
{
if (((USB_DATA_CLASS_INTF_STRUCT_PTR) (data_parser->class_intf_handle))->BOUND_CONTROL_INTERFACE != NULL)
{
if (reg_device == 0)
{
reg_device = dev_handle;
_usb_event_set(&device_registered, 0x01);
}
}
#if 0 /* << EST */
printf("----- Device installed -----\n");
#endif
}
#if 0 /* << EST */
printf("----- CDC data interface selected -----\n");
#endif
break;
}
case USB_DETACH_EVENT:
{
CLASS_CALL_STRUCT_PTR data_parser;
USB_DATA_CLASS_INTF_STRUCT_PTR if_ptr;
if (NULL == (data_parser = usb_class_cdc_get_data_interface(intf_handle)))
break;
if_ptr = (USB_DATA_CLASS_INTF_STRUCT_PTR) data_parser->class_intf_handle;
if (if_ptr->in_pipe != NULL)
_usb_event_set(&if_ptr->data_event, USB_DATA_DETACH); /* mark we are not using input pipe */
/* Allow tasks waiting for data to be finished...
** This does have sense only if this task will not be active
** or scheduler switches to another task.
** For simplification, we dont use any semaphore to indicate that
** all tasks have finished its job with device. Instead, we have just
** informed them that device is detached and we rely on USB stack layer
** that it checking if the device is available returns false.
** The code that would synchronize tasks to be finished would look like:
**
** _lwsem_wait(if_ptr->device_using_tasks);
*/
/* unbind data interface */
if (USB_OK != usb_class_cdc_unbind_acm_interface(data_parser))
break;
//if (USB_OK != usb_class_cdc_uninstall_driver(data_parser))
// break;
if (if_ptr->in_pipe != NULL)
{
free(if_ptr->RX_BUFFER);
}
if (reg_device == dev_handle)
{
reg_device = 0;
_usb_event_clear(&device_registered, 0x01);
}
#if 0 /* << EST */
printf("----- CDC data interface detach Event -----\n");
fflush(stdout);
printf("State = detached");
printf(" Class = %%d", intf_ptr->bInterfaceClass);
printf(" SubClass = %%d", intf_ptr->bInterfaceSubClass);
printf(" Protocol = %%d\n", intf_ptr->bInterfaceProtocol);
fflush(stdout);
#endif
break;
}
default:
#if 0 /* << EST */
printf("CDC device: unknown data event\n");
fflush(stdout);
#endif
break;
} /* EndSwitch */
} /* Endbody */
void usb_host_cdc_acm_event
(
/* [IN] pointer to device instance */
_usb_device_instance_handle dev_handle,
/* [IN] pointer to interface descriptor */
_usb_interface_descriptor_handle intf_handle,
/* [IN] code number for event causing callback */
uint_32 event_code
)
{ /* Body */
INTERFACE_DESCRIPTOR_PTR intf_ptr = (INTERFACE_DESCRIPTOR_PTR)intf_handle;
ACM_DEVICE_STRUCT_PTR acm_device;
#if 0 /* << EST */
fflush(stdout);
#endif
switch (event_code)
{
case USB_CONFIG_EVENT:
/* Drop through into attach, same processing */
case USB_ATTACH_EVENT:
{
USB_CDC_DESC_ACM_PTR acm_desc = NULL;
USB_CDC_DESC_CM_PTR cm_desc = NULL;
USB_CDC_DESC_HEADER_PTR header_desc = NULL;
USB_CDC_DESC_UNION_PTR union_desc = NULL;
int_32 external_data = 0;
/* finds all the descriptors in the configuration */
if (USB_OK != usb_class_cdc_get_acm_descriptors(dev_handle,
intf_handle,
&acm_desc,
&cm_desc,
&header_desc,
&union_desc))
break;
/* we can allocate new acm device */
if (NULL == (acm_device = USB_mem_alloc_zero(sizeof(ACM_DEVICE_STRUCT))))
break;
/* initialize new interface members and select this interface */
if (USB_OK != _usb_hostdev_select_interface(dev_handle,
intf_handle, (pointer)&acm_device->CLASS_INTF))
{
free(acm_device);
break;
}
/* set all info got from descriptors to the class interface struct */
usb_class_cdc_set_acm_descriptors((pointer)&acm_device->CLASS_INTF,
acm_desc, cm_desc, header_desc, union_desc);
/* link all already registered data interfaces to this ACM control, if needed */
if (USB_OK != usb_class_cdc_bind_data_interfaces(dev_handle, (pointer)&acm_device->CLASS_INTF))
{
free(acm_device);
break;
}
#if 0 /* << EST */
printf("----- CDC control interface attach Event -----\n");
fflush(stdout);
printf("State = attached");
printf(" Class = %%d", intf_ptr->bInterfaceClass);
printf(" SubClass = %%d", intf_ptr->bInterfaceSubClass);
printf(" Protocol = %%d\n", intf_ptr->bInterfaceProtocol);
fflush(stdout);
#endif
check_open = 0;
break;
}
case USB_INTF_EVENT:
{
CLASS_CALL_STRUCT_PTR acm_parser;
USB_STATUS status;
if (NULL == (acm_parser = usb_class_cdc_get_ctrl_interface(intf_handle)))
break;
status = usb_class_cdc_init_ipipe(acm_parser);
if ((status != USB_OK) && (status != USBERR_OPEN_PIPE_FAILED))
break;
#if 0 /* << EST */
printf("----- CDC control interface selected -----\n");
#endif
break;
}
case USB_DETACH_EVENT:
{
CLASS_CALL_STRUCT_PTR acm_parser;
USB_ACM_CLASS_INTF_STRUCT_PTR if_ptr;
if (NULL == (acm_parser = usb_class_cdc_get_ctrl_interface(intf_handle)))
break;
if_ptr = (USB_ACM_CLASS_INTF_STRUCT_PTR) acm_parser->class_intf_handle;
_usb_event_set(&if_ptr->acm_event, USB_ACM_DETACH); /* mark we are not using input pipe */
/* Allow tasks waiting for acm to be finished...
** This does have sense only if this task will not be active
** or scheduler switches to another task.
** For simplification, we dont use any semaphore to indicate that
** all tasks have finished its job with device. Instead, we have just
** informed them that device is detached and we rely on USB stack layer
** that it checking if the device is available returns false.
** The code that would synchronize tasks to be finished would look like:
**
** _lwsem_wait(if_ptr->device_using_tasks);
*/
usb_class_cdc_unbind_data_interfaces(acm_parser);
USB_unlock();
free(acm_parser);
/* Use only the interface with desired protocol */
#if 0 /* << EST */
printf("----- CDC control interface detach event -----\n");
fflush(stdout);
printf("State = detached");
printf(" Class = %%d", intf_ptr->bInterfaceClass);
printf(" SubClass = %%d", intf_ptr->bInterfaceSubClass);
printf(" Protocol = %%d\n", intf_ptr->bInterfaceProtocol);
fflush(stdout);
#endif
break;
}
break;
default:
#if 0 /* << EST */
printf("CDC device: unknown control event\n");
fflush(stdout);
#endif
break;
} /* EndSwitch */
} /* Endbody */