VIM 4 GPIO Configuration to RPI

[WongTX]

Which system do you use? Android, Ubuntu, OOWOW or others?

Ubuntu

Which version of system do you use? Please provide the version of the system here:

5.15.137 Ubuntu 24.04

Please describe your issue below:

Hi, I would like to configure the GPIO on the khadas VIM 4 to match something similar to RPI 4 GPIO, so that I am able to use RPI HAT/Repo that uses RPI GPIO. May I know if this is possible? If so, how can I achieve it? I am quite new to the hardware configuration, I have read Device Tree Overlay [Khadas Docs] but still have no idea what to write in the .dts file. The repo I am trying to get working is this GitHub - hzeller/rpi-rgb-led-matrix: Controlling up to three chains of 64x64, 32x32, 16x32 or similar RGB LED displays using Raspberry Pi GPIO.

Would appreciate if someone can guide me on this because I am currently in a rush to finish the project, but the hardware portion of this is setting me back as I dont have enough experience with it.

[numbqq]

Hello @WongTX

Maybe you can try this: VIM4 WiringPi [Khadas Docs]

[WongTX]

Hello @numbqq

I set the GPIO pin to out using “gpio mode X out” because I cant do it via WiringPi python.
When I tried running this

def clock_pulse(self):
“”“Send a clock pulse”“”
wpi.digitalWrite(HUB75_PINS[‘CLK’], 1)
wpi.digitalWrite(HUB75_PINS[‘CLK’], 0)

def latch_data(self):
    """Latch the shift register data"""
    wpi.digitalWrite(HUB75_PINS['LAT'], 1)
    wpi.digitalWrite(HUB75_PINS['LAT'], 0)

def test_all_color(self, r1, g1, b1, r2, g2, b2, duration=2):
“”“Fill panel with solid color”“”
print(f"Testing color R1={r1},G1={g1},B1={b1}, R2={r2},G2={g2},B2={b2}")

    start_time = time.time()
    while time.time() - start_time < duration:
        for row in range(PANEL_HEIGHT // 2):
            self.set_address(row)
            
            # Shift out data for entire row
            for col in range(PANEL_WIDTH):
                self.set_rgb(r1, g1, b1, r2, g2, b2)
                self.clock_pulse()
            
            self.latch_data()
            self.enable_output(True)
            time.sleep(0.001)  # Brief display time
            self.enable_output(False)

nothing seems to happen, when I try the test_all_color function. What are the ways I can troubleshoot this?

[WongTX]

I managed to solve it, thank you. If anyone need the code, can ping me