UM0290 datasheet(8/76 Pages) STMICROELECTRONICS

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STR7/STR9 USB firmware library

UM0290

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Endpoint register functions: All operations related to endpoint registers can be

performed with the SetENDPOINT and GetENDPOINT functions. However, several

functions are derived from these to permit direct action on a specific field.

Endpoint set/get value

SetENDPOINT

void SetENDPOINT(u8 bEpNum,u16 wRegValue)

bEpNum = Endpoint number, wRegValue = Value to write

GetENDPOINT

u16 GetENDPOINT(u8 bEpNum)

bEpNum = Endpoint number

return value: the endpoint register value

Endpoint TYPE field

The EP_TYPE field of the endpoint register could have these defined values:

#define EP_BULK

(0x0000)

// Endpoint BULK

#define EP_CONTROL

(0x0200)

// Endpoint CONTROL

#define EP_ISOCHRNOUS

(0x0400)

// Endpoint ISOCHRONOUS

#define EP_INTERRUPT

(0x0600)

// Endpoint INTERRUPT

SetEPType

void SetEPType (u8 bEpNum, u16 wtype)

bEpNum = Endpoint number, wtype = Endpoint type (value from the

above define’s)

GetEPType

u16 GetEPType (u8 bEpNum)

bEpNum = Endpoint number

return value: a value from the above define’s

Endpoint STATUS field

The STAT_TX / STAT_RX fields of the endpoint register could have these defined

values:

#define EP_TX_DIS

(0x0000)

// Endpoint TX DISabled

#define EP_TX_STALL

(0x0010)

// Endpoint TX STALLed

#define EP_TX_NAK

(0x0020)

// Endpoint TX NAKed

#define EP_TX_VALID

(0x0030)

// Endpoint TX VALID

#define EP_RX_DIS

(0x0000)

// Endpoint RX DISabled

#define EP_RX_STALL

(0x1000)

// Endpoint RX STALLed

#define EP_RX_NAK

(0x2000)

// Endpoint RX NAKed

#define EP_RX_VALID

(0x3000)

// Endpoint RX VALID

SetEPTxStatus

void SetEPTxStatus(u8 bEpNum,u16 wState)

SetEPRxStatus

void SetEPRxStatus(u8 bEpNum,u16 wState)

bEpNum = Endpoint number, wState = a value from the above define’s

GetEPTxStatus

u16 GetEPTxStatus(u8 bEpNum)

GetEPRxStatus

u16 GetEPRxStatus(u8 bEpNum)

bEpNum = endpoint number

return value:a value from the above define’s

Endpoint KIND field

SetEP_KIND

void SetEP_KIND(u8 bEpNum)

ClearEP_KIND

void ClearEP_KIND(u8 bEpNum)

bEpNum = endpoint number

Set_Status_Out

void Set_Status_Out(u8 bEpNum)

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