Not working HID device (c++, Pico)

1

This code builds without errors but isn´t sending keyboard inputs. I am not good in coding yet and I can´t figure out why it doesn´t work

#include "Arduino.h"
#include "pico/stdlib.h"
#include "hardware/adc.h"   // For reading ADC values
#include "tusb.h"           // For TinyUSB HID functions

#define test 26

// Setup function
void setup() 
{
    pinMode(test, INPUT);
    tusb_init();
}

// Loop function
void loop() 
{   
    int poti = analogRead(test);
    poti = poti / 4;
    poti = poti -128;
    Serial.println(poti);
    delay(1000);

    //report array
    uint8_t report[6];
    

    if (poti<0)
    {
      report[0]= (HID_KEY_A);
    }
    else
    {
      report [0] = (HID_KEY_B);
    }

    tud_hid_n_keyboard_report(0, 0, 0, report);
    delay(100);                            // Short delay
    tud_hid_keyboard_report(0, 0, NULL);   // Send key release

    if (tud_hid_ready())
    {
      Serial.println("HID DETECTED");
    }

    if (tud_cdc_connected())
    {
      Serial.println("CDC DETECTED");
    }

}

extern "C" 
{
    // Invoked when USB HID gets a report request from host
    uint16_t tud_hid_get_report_cb(uint8_t itf, uint8_t report_id, hid_report_type_t report_type, uint8_t* buffer, uint16_t reqlen)
    {
        // No report to send by default
        return 0;
    }

    // Invoked when USB HID receives a report from host
    void tud_hid_set_report_cb(uint8_t itf, uint8_t report_id, hid_report_type_t report_type, uint8_t const* buffer, uint16_t bufsize)
    {
        // Handle received report (not needed in this example)
    }
}
2

What’s the platformio.ini here?

And why not try a standard sketch for a HID keyboard first instead of this custom stuff?

3

Here is the full plattformio.ini

; PlatformIO Project Configuration File
;
;   Build options: build flags, source filter
;   Upload options: custom upload port, speed and extra flags
;   Library options: dependencies, extra library storages
;   Advanced options: extra scripting
;
; Please visit documentation for the other options and examples
; https://docs.platformio.org/page/projectconf.html

[env:pico]
platform = https://github.com/maxgerhardt/platform-raspberrypi.git
board = pico
framework = arduino
board_build.core = earlephilhower
4

Any reason to not use https://github.com/maxgerhardt/pio-arduino-pico-tinyusb-hid as a source and just copy paste the Adafruit TinyUSB example code for a HID keyboard into it?

https://github.com/adafruit/Adafruit_TinyUSB_Arduino/blob/446e0af7a90f5b8eefac626767607436522610e5/examples/HID/hid_boot_keyboard/hid_boot_keyboard.ino