arduino-esp32/libraries/USB/examples/HIDVendor/HIDVendor.ino

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#include "USB.h"
#include "USBHIDVendor.h"
USBHIDVendor Vendor;
const int buttonPin = 0;
int previousButtonState = HIGH;
static void vendorEventCallback(void* arg, esp_event_base_t event_base, int32_t event_id, void* event_data){
if(event_base == ARDUINO_USB_HID_VENDOR_EVENTS){
arduino_usb_hid_vendor_event_data_t * data = (arduino_usb_hid_vendor_event_data_t*)event_data;
switch (event_id){
case ARDUINO_USB_HID_VENDOR_GET_FEATURE_EVENT:
Serial.printf("HID VENDOR GET FEATURE: len:%u\n", data->len);
break;
case ARDUINO_USB_HID_VENDOR_SET_FEATURE_EVENT:
Serial.printf("HID VENDOR SET FEATURE: len:%u\n", data->len);
for(uint16_t i=0; i<data->len; i++){
Serial.printf("0x%02X ",data->buffer);
}
Serial.println();
break;
case ARDUINO_USB_HID_VENDOR_OUTPUT_EVENT:
Serial.printf("HID VENDOR OUTPUT: len:%u\n", data->len);
// for(uint16_t i=0; i<data->len; i++){
// Serial.write(Vendor.read());
// }
break;
default:
break;
}
}
}
void setup() {
pinMode(buttonPin, INPUT_PULLUP);
Serial.begin(115200);
Vendor.onEvent(vendorEventCallback);
Vendor.begin();
USB.begin();
}
void loop() {
int buttonState = digitalRead(buttonPin);
if ((buttonState != previousButtonState) && (buttonState == LOW)) {
Vendor.println("Hello World!");
}
previousButtonState = buttonState;
while(Vendor.available()){
Serial.write(Vendor.read());
}
}