bstanwell/wch-uf2-example
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add additional device requests

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R
2024-04-13 02:41:52 +01:00
parent 2cfaa6fdb3
commit c02a5ed484
1 changed files with 19 additions and 2 deletions
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bootloader.c
+19 -2
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@@ -90,6 +90,7 @@ const uint8_t USB_CONF_DESC[0x12] __attribute__((aligned(16))) = {
#define STATE_GET_DEV_DESC 0x01
#define STATE_GET_CONF_DESC 0x02
#define STATE_CTRL_STATUS_OUT 0x03
#define STATE_CTRL_SIMPLE_IN 0x04
int main(void) {
// PLL setup: system clock 96 MHz
@@ -137,7 +138,13 @@ int main(void) {
if (ep0_status & (1 << 11)) {
// setup, STAT_RX and STAT_TX both now NAK
uint16_t bRequest_bmRequestType = USB_EP0_OUT(0);
if (bRequest_bmRequestType == 0x0500) {
if (bRequest_bmRequestType == 0x0080) {
// GET_STATUS
USB_EP0_IN(0) = 0;
USB_DESCS[0].count_tx = 2;
master_state = (STATE_CTRL_SIMPLE_IN << 24);
R16_USBD_EPR(0) = (0b01 << 9) | (0b11 << 12) | (0b01 << 4); // STALL for OUT, ACK for IN
} else if (bRequest_bmRequestType == 0x0500) {
// SET_ADDRESS
master_state = (STATE_SET_ADDR << 24) | USB_EP0_OUT(2);
USB_DESCS[0].count_tx = 0;
@@ -173,6 +180,12 @@ int main(void) {
// bad descriptor
R16_USBD_EPR(0) = (0b01 << 9) | (0b11 << 12) | (0b11 << 4); // STALL for both
}
} else if (bRequest_bmRequestType == 0x0880) {
// GET_CONFIGURATION
USB_EP0_IN(0) = active_config;
USB_DESCS[0].count_tx = 1;
master_state = (STATE_CTRL_SIMPLE_IN << 24);
R16_USBD_EPR(0) = (0b01 << 9) | (0b11 << 12) | (0b01 << 4); // STALL for OUT, ACK for IN
} else if (bRequest_bmRequestType == 0x0900) {
// SET_CONFIGURATION
uint32_t wValue = USB_EP0_OUT(2);
@@ -186,7 +199,6 @@ int main(void) {
} else {
// unknown
R16_USBD_EPR(0) = (0b01 << 9) | (0b11 << 12) | (0b11 << 4); // STALL for both
while (1) {}
}
} else {
switch (master_state >> 24) {
@@ -254,6 +266,11 @@ int main(void) {
}
}
break;
case STATE_CTRL_SIMPLE_IN:
// ready for OUT status ACK, no more IN
master_state = (STATE_CTRL_STATUS_OUT << 24);
R16_USBD_EPR(0) = (0b01 << 9) | (0b10 << 12) | (1 << 8) | (0b11 << 4);
break;
}
}
}