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clear USB_RXFLVI_M before read_rx_fifo()

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more format clean up
This commit is contained in:
hathach 2020-04-10 15:13:12 +07:00
parent 933e3cdfc7
commit c0695b4b55
1 changed files with 7 additions and 14 deletions
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21
src/portable/espressif/esp32s2/dcd_esp32s2.c
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@ -362,22 +362,18 @@ void dcd_edpt_stall(uint8_t rhport, uint8_t ep_addr)
} else {
// Stop transmitting packets and NAK IN xfers.
in_ep[epnum].diepctl |= USB_DI_SNAK1_M;
while ((in_ep[epnum].diepint & USB_DI_SNAK1_M) == 0)
;
while ((in_ep[epnum].diepint & USB_DI_SNAK1_M) == 0) ;
// Disable the endpoint. Note that both SNAK and STALL are set here.
in_ep[epnum].diepctl |= (USB_DI_SNAK1_M | USB_D_STALL1_M |
USB_D_EPDIS1_M);
while ((in_ep[epnum].diepint & USB_D_EPDISBLD0_M) == 0)
;
in_ep[epnum].diepctl |= (USB_DI_SNAK1_M | USB_D_STALL1_M | USB_D_EPDIS1_M);
while ((in_ep[epnum].diepint & USB_D_EPDISBLD0_M) == 0) ;
in_ep[epnum].diepint = USB_D_EPDISBLD0_M;
}
// Flush the FIFO, and wait until we have confirmed it cleared.
USB0.grstctl |= ((epnum - 1) << USB_TXFNUM_S);
USB0.grstctl |= USB_TXFFLSH_M;
while ((USB0.grstctl & USB_TXFFLSH_M) != 0)
;
while ((USB0.grstctl & USB_TXFFLSH_M) != 0) ;
} else {
// Only disable currently enabled non-control endpoint
if ((epnum == 0) || !(out_ep[epnum].doepctl & USB_EPENA0_M)) {
@ -388,14 +384,12 @@ void dcd_edpt_stall(uint8_t rhport, uint8_t ep_addr)
// anyway, and it can't be cleared by user code. If this while loop never
// finishes, we have bigger problems than just the stack.
USB0.dctl |= USB_SGOUTNAK_M;
while ((USB0.gintsts & USB_GOUTNAKEFF_M) == 0)
;
while ((USB0.gintsts & USB_GOUTNAKEFF_M) == 0) ;
// Ditto here- disable the endpoint. Note that only STALL and not SNAK
// is set here.
out_ep[epnum].doepctl |= (USB_STALL0_M | USB_EPDIS0_M);
while ((out_ep[epnum].doepint & USB_EPDISBLD0_M) == 0)
;
while ((out_ep[epnum].doepint & USB_EPDISBLD0_M) == 0) ;
out_ep[epnum].doepint = USB_EPDISBLD0_M;
// Allow other OUT endpoints to keep receiving.
@ -698,6 +692,7 @@ void dcd_irq_handler(uint32_t rhport)
if (int_status & USB_RXFLVI_M) {
ESP_EARLY_LOGV(TAG, "dcd_irq_handler - rx!");
USB0.gintsts = USB_RXFLVI_M;
// disable RXFLVI interrupt until we read data from FIFO
USB0.gintmsk &= ~USB_RXFLVIMSK_M;
@ -706,8 +701,6 @@ void dcd_irq_handler(uint32_t rhport)
// re-enable RXFLVI
USB0.gintmsk |= USB_RXFLVIMSK_M;
USB0.gintsts = USB_RXFLVI_M;
}
// OUT endpoint interrupt handling.