F103 USB BULK OUT Problem

schlenkj · ‎2014-05-04

Posted on May 04, 2014 at 16:04

Hello,

I am trying to get double buffered USB bulk-out transfers working.The device does enumerate correctly but bulk transfers do not even raise interrupts.

This is my EP initialization (usb_prop.c : reset handler:

[code]

SetBTABLE(BTABLE_ADDRESS);

// ========================================================

// Initialize Endpoint 0

// ========================================================

SetEPType(ENDP0, EP_CONTROL);

SetEPTxStatus(ENDP0, EP_TX_NAK);//STALL);

SetEPRxAddr(ENDP0, ENDP0_RXADDR);

SetEPRxCount(ENDP0, Device_Property.MaxPacketSize);

SetEPTxAddr(ENDP0, ENDP0_TXADDR);

Clear_Status_Out(ENDP0);

SetEPRxValid(ENDP0);

// ========================================================

// Initialize Endpoint 1 - tx - IN

// ========================================================

SetEPType(ENDP1, EP_BULK);

SetEPDoubleBuff(ENDP1);

SetEPDblBuffAddr (ENDP1, ENDP1_BUF0_ADDR, ENDP1_BUF1_ADDR);

SetEPDblBuffCount(ENDP1, EP_DBUF_IN, 0x40);

ClearDTOG_RX(ENDP1);

ClearDTOG_TX(ENDP1);

ToggleDTOG_TX(ENDP1);

SetEPTxStatus(ENDP1, EP_TX_NAK);

SetEPRxStatus(ENDP1, EP_RX_DIS);

// ========================================================

// Initialize Endpoint 2 - rx - OUT

// ========================================================

SetEPType(ENDP2, EP_BULK);

SetEPDoubleBuff(ENDP2);

SetEPDblBuffAddr (ENDP2, ENDP2_BUF0_ADDR, ENDP2_BUF1_ADDR);

SetEPDblBuffCount(ENDP2, EP_DBUF_OUT, 0x40);

ClearDTOG_RX(ENDP2);

ClearDTOG_TX(ENDP2);

ToggleDTOG_RX(ENDP2);

SetEPRxStatus(ENDP2, EP_RX_VALID);

SetEPTxStatus(ENDP2, EP_TX_DIS);

SetEPRxValid(ENDP0);

SetDeviceAddress(0);

bDeviceState = ATTACHED;

[/code]

register values:

USB_EP0R = 00005250

USB_EP1R = 00000161

USB_EP2R = 00007102

CNTR = 0000BF00

ISTR = 00000000

USB_DADDR= 000000A4

BTAB_ADDR= 00000000

PMA BTABLE:

00000080 ADDR0_TX

00000000 COUNT0_TX

00000040 ADDR0_RX

00008400 COUNT0_RX

00000100 ...

00000040

00000140

00000040

00000180

00008400

000001C0

00008400

Device : STM32F103C8T6

zzdz2 · ‎2014-05-04

Posted on May 04, 2014 at 17:33

ClearDTOG_RX(ENDP2);

ClearDTOG_TX(ENDP2);

ToggleDTOG_RX(ENDP2);

Have you tried not to set the DTOG_RX ?

Maybe it will work when started with DTOG cleared.

tsuneo · ‎2014-05-04

Posted on May 04, 2014 at 18:49

Assuming you are working on STM32_USB-FS-Device_Lib_V4.0.0,

// ========================================================
// Initialize Endpoint 2 - rx - OUT
// ========================================================
SetEPType(ENDP2, EP_BULK);
SetEPDoubleBuff(ENDP2);
SetEPDblBuffAddr (ENDP2, ENDP2_BUF0_ADDR, ENDP2_BUF1_ADDR);
SetEPDblBuffCount(ENDP2, EP_DBUF_OUT, 0x40);
ClearDTOG_RX(ENDP2);
ClearDTOG_TX(ENDP2);
ToggleDTOG_RX(ENDP2); // <---- ToggleDTOG_TX(ENDP2);
SetEPRxStatus(ENDP2, EP_RX_VALID);
SetEPTxStatus(ENDP2, EP_TX_DIS);

Tsuneo