USB HID performance optimization I'm planning to use a cheap STM32 board (either with a F103 or F401/11) as a joystick/rotary encoder controller for arcade games. I already have a working proof of concept using the old STM32duino cores (not HAL based), but I prefer to use the HAL environment to avoid more abstraction levels.I used an existing example as a starting point (https://github.com/miniwinwm/BluePillDemo/tree/master/BluePillDemo_USB_HID), and I run into a problem trying to send data at high rates.I'm using a Windows PC with mouserate.exe (http://tscherwitschke.de/old/mouseratechecker.html) to check effective rates. Windows can handle 1000Hz rates for mice.First, I modified usbd_conf.h and changed#define HID_FS_BINTERVAL 0x1 // was 0x0Ato increase the reported polling rate to 1000HzThen I put the following code in my main.cint main(void)
{
/* USER CODE BEGIN 1 */
// in the mouse report byte 0 contains 3 button state bits
// byte 1,2,3 is x, y, thumbwheel movement
uint8_t mouse_report[5] =
