milkv-duo / duo-examples Goto Github PK

As shown in the figure, the LED pin is 0

And in the example code, the GUO_LED is 25

I try this code, it's NOT work. After changing it to 0, it can run normally.

Hello,

I have compiled dht22 example on the duo board where I'm running Ubuntu
It can't read the values...

Hi guys. I am trying to detect button actions with a GPIO pin and a GND pin at milk-v DUO.

I connected the GPIO14 pin and the button to the GND pin. In the program, I set the GPIO14 in an input mode and read digital value per second, which worked for Raspberry Pi 4b GPIO. However when I closed the switch, it seemed to short-circuit, and the Milkv automatically restarted. I googled it and found it seems I need a resistance between the switch and the two pins. I managed to add a 150Ω resistance but the GPIO14 can not read the switch closing this time.
I am a newbie in embedded development. If there are any mistakes in what I did above, or if you have better suggestions, I would be happy to accept them. Thank you in advance.

The code:

#include <stdio.h>
#include <unistd.h>
#include <wiringx.h>

#define GPIO_14 19

int main() {

    if(wiringXSetup("duo", NULL) == -1) {
        wiringXGC();
        return -1;
    }

    if(wiringXValidGPIO(GPIO_14) != 0) {
        printf("Invalid GPIO %d\n", GPIO_14);
        return -1;
    }

    pinMode(GPIO_14, PINMODE_INPUT);

    while(1) {
        int ret;
        ret = digitalRead(GPIO_14);
        printf("value: %d\n", ret); // should print 0 if I close the switch or press the button?
        sleep(1);
    }

    return 0;
}

Is there currently a way to utilize the 8051 Subsystem of the board? I think i have not yet found anything in the milkv-duo repositories regarding this functionality.
Could it be possible to access the subsystem using a modified version of the mailbox test, or is there currently no rather simle way to utilize the subsystem?

[root@milkv-duo]# ls
helloworld ssd1306_i2c
[root@milkv-duo]# ./ssd1306_i2c
-sh: ./ssd1306_i2c: not found
i dont know why it is saying it is not there when it clearly is there in the directory.

Hello, I tried compiling examples with the SDK which envsetup.sh downloads, and no luck — because it's made for x86_64.

Where can I get a version for ARM machines, or maybe I can get somewhere your SDK source and compile it to work on ARM?

Thanks in advance.