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dcd_msp430x5xx: Add dummy dcd_edpt0_status_complete handler. Add

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comment which describes why it might be needed.
This commit is contained in:
William D. Jones 2020-03-24 00:03:12 -04:00
parent 27efedc9e6
commit 6b5157fd28
1 changed files with 18 additions and 8 deletions
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26
src/portable/ti/msp430x5xx/dcd_msp430x5xx.c
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@ -1,8 +1,8 @@
/*
* The MIT License (MIT)
*
* Copyright (c) 2019 William D. Jones
* Copyright (c) 2019 Ha Thach (tinyusb.org)
* Copyright (c) 2019-2020 William D. Jones
* Copyright (c) 2019-2020 Ha Thach (tinyusb.org)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
@ -384,6 +384,22 @@ void dcd_edpt_clear_stall (uint8_t rhport, uint8_t ep_addr)
}
}
void dcd_edpt0_status_complete(uint8_t rhport, tusb_control_request_t const * request)
{
(void) rhport;
(void) request;
// FIXME: Per manual, we should be clearing the NAK bits of EP0 after the
// Status Phase of a control xfer is done, in preparation of another possible
// SETUP packet. However, from my own testing, SETUP packets _are_ correctly
// handled by the USB core without clearing the NAKs.
//
// Right now, clearing NAKs in this callbacks causes a direction mismatch
// between host and device on EP0. Figure out why and come back to this.
// USBOEPCNT_0 &= ~NAK;
// USBIEPCNT_0 &= ~NAK;
}
/*------------------------------------------------------------------*/
static void receive_packet(uint8_t ep_num)
@ -563,12 +579,6 @@ void __attribute__ ((interrupt(USB_UBM_VECTOR))) USB_UBM_ISR(void)
// first place. When I first noticed the STALL, the only two places I
// touched the NAK bits were in dcd_edpt_xfer() and to _set_ (sic) them in
// bus_reset(). SETUP packet handling should've been unaffected.
//
// FIXME: Per manual, we should be clearing the NAK bits of EP0 after the
// Status Phase of a control xfer is done, in preparation of another
// possible SETUP packet. We don't do this right now, as there is no
// "Status Phase done" callback the driver can use. However, SETUP packets
// _are_ correctly handled by the USB core without clearing the NAKs.
case USBVECINT_SETUP_PACKET_RECEIVED:
break;