bstanwell/wch-uf2-example
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enumerates okay on linux

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R
2024-04-13 02:11:20 +01:00
parent 8f986b45f1
commit 2cfaa6fdb3
1 changed files with 24 additions and 3 deletions
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bootloader.c
+24 -3
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@@ -41,15 +41,25 @@ const uint8_t USB_DEV_DESC[18] __attribute__((aligned(16))) = {
1, // bNumConfigurations
};
const uint8_t USB_CONF_DESC[9] __attribute__((aligned(16))) = {
const uint8_t USB_CONF_DESC[0x12] __attribute__((aligned(16))) = {
9, // bLength
2, // bDescriptorType
0x09, 0x00, // wTotalLength
0, // bNumInterfaces
0x12, 0x00, // wTotalLength
1, // bNumInterfaces
1, // bConfigurationValue
0, // iConfiguration
0x80, // bmAttributes
250, // bMaxPower
9, // bLength
4, // bDescriptorType
0, // bInterfaceNumber
0, // bAlternateSetting
0, // bNumEndpoints
0xff, // bInterfaceClass
0xff, // bInterfaceSubClass
0xff, // bInterfaceProtocol
0, // iInterface
};
#define USB_DESCS ((volatile USBD_descriptor*)0x40006000)
@@ -111,6 +121,7 @@ int main(void) {
R32_EXTEN_CTR |= (1 << 1);
uint32_t master_state = 0;
uint32_t active_config = 0;
// R32_GPIOA_CFGLR = (R32_GPIOA_CFGLR & ~0xf) | (0b0010 << 0);
while (1) {
@@ -162,6 +173,16 @@ int main(void) {
// bad descriptor
R16_USBD_EPR(0) = (0b01 << 9) | (0b11 << 12) | (0b11 << 4); // STALL for both
}
} else if (bRequest_bmRequestType == 0x0900) {
// SET_CONFIGURATION
uint32_t wValue = USB_EP0_OUT(2);
if (wValue == 0 || wValue == 1) {
active_config = wValue;
USB_DESCS[0].count_tx = 0;
R16_USBD_EPR(0) = (0b01 << 9) | (0b11 << 12) | (0b01 << 4); // STALL for OUT, ACK for IN
} else {
R16_USBD_EPR(0) = (0b01 << 9) | (0b11 << 12) | (0b11 << 4); // STALL for both
}
} else {
// unknown
R16_USBD_EPR(0) = (0b01 << 9) | (0b11 << 12) | (0b11 << 4); // STALL for both