Renesas R8A66597, Руководство пользователя

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Renesas USB Device USB Host Mass Storage Class Driver(HMSC)
R01AN0513EJ0110 Rev.1.10 Page 21 of 55
Aug 10, 2011
4. Host Control Driver Interface(HCI) Functions
4.1 Functions and Features
For the case of uITRON, until the drive is mounted, HCI uses the HCD class area to send and receive messages.
When mounting of the drive is finished, it uses the HMSCD dedicated area. For the case of non-OS,HCI uses the
HMSCD area to send and receive messages. And it is not possible to enumerate (or access) two devices simultaneously.
4.2 HCI Global Area
Table 4.1 lists details of the HCI global area.
Table 4.1 HCI Global Area
Format Variable Name Description
1 USBC_UTR_t usb_ghmsc_TransData[US
BC_MAXSTRAGE]
Transmit data structure
2 USBC_UTR_t usb_ghmsc_ReceiveData[USBC_MAXSTRAGE] Receive data structure
3 USBC_UTR_t usb_ghmsc_ControlData Control transfer structure
4 uint16_t usb_ghmsc_OutPipe [USBC_MAXSTRAGE][2] Pipe number using OUT direction
endpoint
5 uint16_t usb_ghmsc_InPipe [USBC_MAXSTRAGE][2] Pipe number using IN direction
endpoint
6 uint8_t usb_ghmsc_Data[5120] Data transfer work area
4.3 HCI Functions
Table 4.2 lists the functions of HCI.
Table 4.2 HCI Functions
Function Name Description
1 usb_hmsc_SendCbw() Transmits CBW.
2 usb_hmsc_GetData() Receives data.
3 usb_hmsc_SendData() Transmits data.
4 usb_hmsc_GetCsw() Receives CBW.
5 usb_hmsc_GetStringInfo() GetDescriptor (string) request Execution.
6 R_usb_hmsc_GetMaxUnit() Get_MaxUnit request Execution.
7 R_usb_hmsc_MassStorageReset() MassStorageReset request Execution.
8 usb_hmsc_TransResult() Performs call-back of HCD data communication result.
9 usb_hmsc_TransWaitTmo() Waits for HCD data communication end or timeout.
10 usb_hmsc_ProcessResult() Performs call-back of HCD processing result.
11 usb_hmsc_ProcessWaitTmo() Waits for HCD processing end or timeout.
12 usb_hmsc_Submitutr() Data transfer request execution to HCD.
13 R_usb_hmsc_ClearStall() STALL release request execution to HCD.