One of the cheapest, most complete options for a touchscreen is a stm32 primer (I, I & III)
They include a arm processor a few outport pins, a small joystick, touchscreen, and so on.. I have one here, although I never used it. (It only supports SWT which doesn't work with openocd)
They include a arm processor a few outport pins, a small joystick, touchscreen, and so on.. I have one here, although I never used it. (It only supports SWT which doesn't work with openocd)