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Fix stall interrupt handling

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This commit is contained in:
kkitayam 2021-09-15 21:28:36 +09:00
parent 46bb821753
commit fbe1bf375c
1 changed files with 15 additions and 2 deletions
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17
src/portable/nxp/khci/dcd_khci.c
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@ -134,10 +134,20 @@ static void prepare_next_setup_packet(uint8_t rhport)
static void process_stall(uint8_t rhport)
{
if (KHCI->ENDPOINT[0].ENDPT & USB_ENDPT_EPSTALL_MASK) {
unsigned endpt;
endpt = KHCI->ENDPOINT[0].ENDPT;
if (endpt & USB_ENDPT_EPSTALL_MASK) {
/* clear stall condition of the control pipe */
prepare_next_setup_packet(rhport);
KHCI->ENDPOINT[0].ENDPT &= ~USB_ENDPT_EPSTALL_MASK;
KHCI->ENDPOINT[0].ENDPT = endpt & ~USB_ENDPT_EPSTALL_MASK;
return;
}
for (int i = 1; i < 16; ++i) {
endpt = KHCI->ENDPOINT[i].ENDPT;
if (endpt & USB_ENDPT_EPSTALL_MASK) {
KHCI->ENDPOINT[i].ENDPT = endpt & ~USB_ENDPT_EPSTALL_MASK;
return;
}
}
}
@ -471,6 +481,9 @@ void dcd_edpt_clear_stall(uint8_t rhport, uint8_t ep_addr)
bd[odd ].data = 0;
bd[odd ^ 1].data = 1;
const unsigned endpt = KHCI->ENDPOINT[epn].ENDPT;
if (endpt & USB_ENDPT_EPSTALL_MASK)
KHCI->ENDPOINT[epn].ENDPT = endpt & ~USB_ENDPT_EPSTALL_MASK;
if (ie) NVIC_EnableIRQ(USB0_IRQn);
}