bstanwell/wch-uf2-example
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not super well tested suspend

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R
2024-04-14 03:52:08 +01:00
parent 3d657b6704
commit 394046a4b1
1 changed files with 10 additions and 2 deletions
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bootloader.c
+10 -2
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@@ -314,7 +314,7 @@ __attribute__((naked)) int main(void) {
// Enable USB
R32_RCC_APB1PCENR |= (1 << 23);
R16_USBD_CNTR &= ~(1 << 1);
R16_USBD_CNTR = 1;
USB_DESCS[0].addr_tx = 0x30 / 2;
USB_DESCS[0].addr_rx = 0x20 / 2;
USB_DESCS[0].count_rx = (8 << 10);
@@ -324,7 +324,7 @@ __attribute__((naked)) int main(void) {
// XXX because the table is at offset 0 don't bother writing this
// Attach USB
R16_USBD_CNTR &= ~(1 << 0);
R16_USBD_CNTR = 0;
R32_EXTEN_CTR |= (1 << 1);
CTRL_XFER_STATE = 0;
@@ -354,6 +354,14 @@ __attribute__((naked)) int main(void) {
set_ep_mode(0, 0, USB_EPTYPE_CONTROL, USB_STAT_STALL, USB_STAT_STALL, 0, 0);
set_ep_mode(1, 1, USB_EPTYPE_BULK, USB_STAT_DISABLED, USB_STAT_DISABLED, 0, 0);
R16_USBD_DADDR = 0x80;
R16_USBD_CNTR = 0;
} else if (usb_int_status & (1 << 11)) {
// suspend
R16_USBD_CNTR |= 1 << 3;
R16_USBD_CNTR |= 1 << 2;
} else if (usb_int_status & (1 << 12)) {
// wakeup
R16_USBD_CNTR = 0;
} else if (usb_int_status & (1 << 15)) {
uint32_t epidx = usb_int_status & 0xf;
uint32_t ep_status = R16_USBD_EPR(epidx);