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Make sure OUT endpoint 0 on the SAMDs always has a valid buffer to store

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a SETUP token into.
This commit is contained in:
Scott Shawcroft 2018-11-14 14:36:26 -08:00
parent 246c28db1a
commit bf8c4612dc
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GPG Key ID: FD0EDC4B6C53CA59
2 changed files with 12 additions and 0 deletions
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6
src/portable/microchip/samd21/dcd_samd21.c
View File

@ -164,6 +164,12 @@ bool dcd_edpt_xfer (uint8_t rhport, uint8_t ep_addr, uint8_t * buffer, uint16_t
UsbDeviceDescBank* bank = &sram_registers[epnum][dir]; UsbDeviceDescBank* bank = &sram_registers[epnum][dir];
UsbDeviceEndpoint* ep = &USB->DEVICE.DeviceEndpoint[epnum]; UsbDeviceEndpoint* ep = &USB->DEVICE.DeviceEndpoint[epnum];
// A setup token can occur immediately after an OUT STATUS packet so make sure we have a valid
// buffer for the control endpoint.
if (epnum == 0 && dir == 0 && buffer == NULL) {
buffer = _setup_packet;
}
bank->ADDR.reg = (uint32_t) buffer; bank->ADDR.reg = (uint32_t) buffer;
if ( dir == TUSB_DIR_OUT ) if ( dir == TUSB_DIR_OUT )
{ {

6
src/portable/microchip/samd51/dcd_samd51.c
View File

@ -163,6 +163,12 @@ bool dcd_edpt_xfer (uint8_t rhport, uint8_t ep_addr, uint8_t * buffer, uint16_t
UsbDeviceDescBank* bank = &sram_registers[epnum][dir]; UsbDeviceDescBank* bank = &sram_registers[epnum][dir];
UsbDeviceEndpoint* ep = &USB->DEVICE.DeviceEndpoint[epnum]; UsbDeviceEndpoint* ep = &USB->DEVICE.DeviceEndpoint[epnum];
// A setup token can occur immediately after an OUT STATUS packet so make sure we have a valid
// buffer for the control endpoint.
if (epnum == 0 && dir == 0 && buffer == NULL) {
buffer = _setup_packet;
}
bank->ADDR.reg = (uint32_t) buffer; bank->ADDR.reg = (uint32_t) buffer;
if ( dir == TUSB_DIR_OUT ) if ( dir == TUSB_DIR_OUT )
{ {