UART Baudrate Issue on MilkV Duo256M Module

Duo
1

Hi everyone,

I’m currently working on the MilkV Duo256M module and using UART for communication. The setup works fine at a baudrate of 230400, and the UART device opens successfully with the following code:

// Initialize WiringX library
printf("Initializing WiringX...\n");
if (wiringXSetup("milkv_duo", NULL) == -1) {
    fprintf(stderr, "WiringX setup failed: %s\n", strerror(errno));
    wiringXGC();
    return -1;
}
printf("WiringX initialized successfully.\n");

// Open UART device
struct wiringXSerial_t serial_config = {UART_BAUD_RATE, 8, 'e', 1, 'n'};
uart_fd = wiringXSerialOpen(UART_PORT, serial_config);
if (uart_fd < 0) {
    fprintf(stderr, "Failed to open UART device: %d\n", uart_fd);
    wiringXGC();
    return -1;
}

However, when I try to increase the baudrate to 460800, the UART device fails to open. I’ve ensured the wiring and setup are correct, but no matter what I do, the device won’t open at higher baudrates.

Has anyone experienced a similar issue? Is there a limitation on the maximum baudrate for the UART interface on the MilkV Duo256M module, or am I missing something?

Any suggestions or advice would be much appreciated! Thanks in advance.

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2

Same here! I’m facing the same issue on Duo-S (SG2000).

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