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-rw-r--r--main.cpp71
1 files changed, 70 insertions, 1 deletions
diff --git a/main.cpp b/main.cpp
index 45b58a6..d220cf2 100644
--- a/main.cpp
+++ b/main.cpp
@@ -150,7 +150,7 @@ auto report_desc = gamepad(
padding_out(5)
);
-auto dev_desc = device_desc(0x200, 0, 0, 0, 64, 0x1d50, 0x6080, 0, 0, 0, 0, 1);
+auto dev_desc = device_desc(0x200, 0, 0, 0, 64, 0x1d50, 0x6080, 0, 1, 2, 3, 1);
auto conf_desc = configuration_desc(2, 1, 0, 0xc0, 0,
// HID interface.
interface_desc(0, 0, 1, 0x03, 0x00, 0x00, 0,
@@ -231,6 +231,75 @@ class USB_DFU_runtime : public USB_class_driver {
USB_DFU_runtime usb_dfu_runtime(usb);
+uint32_t serial_num() {
+ uint32_t* uid = (uint32_t*)0x1ffff7ac;
+
+ return uid[0] * uid[1] * uid[2];
+}
+
+class USB_strings : public USB_class_driver {
+ private:
+ USB_generic& usb;
+
+ public:
+ USB_strings(USB_generic& usbd) : usb(usbd) {
+ usb.register_driver(this);
+ }
+
+ protected:
+ virtual SetupStatus handle_setup(uint8_t bmRequestType, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, uint16_t wLength) {
+ // Get string descriptor.
+ if(bmRequestType == 0x80 && bRequest == 0x06 && (wValue & 0xff00) == 0x0300) {
+ const void* desc = nullptr;
+ uint16_t buf[9];
+
+ switch(wValue & 0xff) {
+ case 0:
+ desc = u"\u0304\u0409";
+ break;
+
+ case 1:
+ desc = u"\u0308zyp";
+ break;
+
+ case 2:
+ desc = u"\u030carcin";
+ break;
+
+ case 3:
+ {
+ buf[0] = 0x0312;
+ uint32_t id = serial_num();
+ for(int i = 8; i > 0; i--) {
+ buf[i] = (id & 0xf) > 9 ? 'A' + (id & 0xf) - 0xa : '0' + (id & 0xf);
+ id >>= 4;
+ }
+ desc = buf;
+ }
+ break;
+ }
+
+ if(!desc) {
+ return SetupStatus::Unhandled;
+ }
+
+ uint8_t len = *(uint8_t*)desc;
+
+ if(len > wLength) {
+ len = wLength;
+ }
+
+ usb.write(0, (uint32_t*)desc, len);
+
+ return SetupStatus::Ok;
+ }
+
+ return SetupStatus::Unhandled;
+ }
+};
+
+USB_strings usb_strings(usb);
+
struct report_t {
uint16_t buttons;
uint8_t axis_x;