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fix nrf clear data toggle sequence when clearing stall

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hathach 2021-08-29 12:05:34 +07:00
parent 66c292e2ec
commit ad21b69277
1 changed files with 6 additions and 3 deletions
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9
src/portable/nordic/nrf5x/dcd_nrf5x.c
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@ -539,12 +539,15 @@ void dcd_edpt_clear_stall (uint8_t rhport, uint8_t ep_addr)
if ( epnum != 0 && epnum != EP_ISO_NUM )
{
// reset data toggle to DATA0
// First write this register with VALUE=Nop to select the endpoint, then either read it to get the status from
// VALUE, or write it again with VALUE=Data0 or Data1
NRF_USBD->DTOGGLE = ep_addr;
NRF_USBD->DTOGGLE = (USBD_DTOGGLE_VALUE_Data0 << USBD_DTOGGLE_VALUE_Pos) | ep_addr;
// clear stall
NRF_USBD->EPSTALL = (USBD_EPSTALL_STALL_UnStall << USBD_EPSTALL_STALL_Pos) | ep_addr;
// reset data toggle to DATA0
NRF_USBD->DTOGGLE = (USBD_DTOGGLE_VALUE_Data0 << USBD_DTOGGLE_VALUE_Pos) | ep_addr;
// Write any value to SIZE register will allow nRF to ACK/accept data
if (dir == TUSB_DIR_OUT) NRF_USBD->SIZE.EPOUT[epnum] = 0;