"Playing with the Board" + Replaying MicroPython on the STM32F7DISC (4)

dcexpert

"Playing with the Board" + Replaying MicroPython on the STM32F7DISC (4) [Copy link]

 

touch

The touch function is another feature of the STM32F7DISC development board, which supports up to 5 points of detection. In this version of micropython, we can use it like this:

import lcdF7D as lcd
import tchF7D as ts
from time import sleep_ms

lcd.init()
lcd.set_text_color(0x00FF00)

ts.init(480, 272)


def ts_test():
    while 1:
        ts.get_state()
        if ts.touches() > 0:
            lcd.clear(0)
            print('\nTouch num: ', str(ts.touches()))
            for i in range(ts.touches()):
                print('  {} {}'.format(i+1, ts.point_info(i+1)))
                p = ts.point_info(i+1)
                x1 = max(min(p[0] - p[2]//2, 479), 0)
                x2 = max(min(p[0] + p[2]//2, 479), 0)
                y1 = max(min(p[1] - p[2]//2, 271), 0)
                y2 = max(min(p[1] + p[2]//2, 271), 0)
                lcd.set_text_color(0x00FF00)
                lcd.draw_rect(x1, y1, x2-x1, y2-y1)
        sleep_ms(100)

Operation effect

This content is originally created by dcexpert , a user of EEWORLD forum. If you want to reprint or use it for commercial purposes, you must obtain the author's consent and indicate the source

okhxyyo

Like, haha, not bad!

chenzhufly

pretty!

littleshrimp

I also had this board, but unfortunately the touch screen was broken and the LCD also broke later.

dcexpert

littleshrimp posted on 2020-2-18 15:43 I also had this board but unfortunately the touch screen was broken and the LCD also broke later

What a shame

JohnsonJiang

Hello, I burned the DFU file you compiled and tried several other LCD routines, all of which worked, but not this 5-point touch one. Is the touch screen function not turned on by default?

dcexpert

JohnsonJiang published on 2020-4-3 10:14 Hello, I burned the DFU file you compiled, and tried several other LCD routines, but this 5-point touch is not available. Is it not available by default?

The example demonstrates the use of the touch screen. If it doesn't work, it may be caused by different hardware versions, which is explained in github.