diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/portable/ti/msp430x5xx/dcd_msp430x5xx.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/src/portable/ti/msp430x5xx/dcd_msp430x5xx.c b/src/portable/ti/msp430x5xx/dcd_msp430x5xx.c index 32565c38e..7b31ddd0a 100644 --- a/src/portable/ti/msp430x5xx/dcd_msp430x5xx.c +++ b/src/portable/ti/msp430x5xx/dcd_msp430x5xx.c @@ -90,9 +90,9 @@ static void bus_reset(void) USBOEPIE |= BIT0; USBIEPIE |= BIT0; - // Set NAK until a setup packet is received. - USBOEPCNT_0 |= NAK; - USBIEPCNT_0 |= NAK; + // Clear NAK until a setup packet is received. + USBOEPCNT_0 &= ~NAK; + USBIEPCNT_0 &= ~NAK; USBCTL |= FEN; // Enable responding to packets. @@ -515,6 +515,11 @@ static void handle_setup_packet(void) _setup_packet[i] = setup_buf[i]; } + // The NAK bits must be clear to receive a SETUP packet. Clearing SETUPIFG + // by reading USBVECINT does not set NAK, so now that we have a SETUP packet + // force NAKs. + USBIEPCNT_0 |= NAK; + USBOEPCNT_0 |= NAK; dcd_event_setup_received(0, (uint8_t*) &_setup_packet[0], true); } |