C030-R412m: Code to connect with u-center (GNSS)

Mbed OS
1

Hi!

I cannot find a working example, how to connect the Ublox C030-R412m target over USB with u-center to visualize GNSS data. I need a script that passes USB serial data to i2c (GNSS) module and vice versa. Any help is very appreciated.

2

Hello,

ZOE-M8B aka on-board GNSS module seems to by connected via UART6 so why you need i2c?

BR, Jan

1 Like
3

Good question :sweat_smile:! Because I have a working example with I2C on my Arduino board with a ZOE-M8. I have tried out the following code. U-Center connects but I don’t se nothing in the U-Center text console.

#include "ThisThread.h"
#include "mbed.h"

#define BAUDRATE 9600

RawSerial pc(USBTX, USBRX);
RawSerial gnss(GNSSTXD, GNSSRXD);
DigitalInOut gnssEn(GNSSEN, PIN_OUTPUT, PushPullNoPull, 0);

void pcRecv() {
    while(pc.readable()) {
        gnss.putc(pc.getc());
    }
}

void gnssRecv() {
    while(gnss.readable()) {
        pc.putc(gnss.getc());
    }
}

int main() {
    // GNSS initialization.
    gnssEn.write(1);
    ThisThread::sleep_for(100);

    pc.baud(BAUDRATE);
    gnss.baud(BAUDRATE);

    pc.attach(&pcRecv, Serial::RxIrq);
    gnss.attach(&gnssRecv, Serial::RxIrq);

    while(true) {}
}

SOLUTION

This example code works, but only with low baudrate like 9600. Why? I don’t know. But it works.

4

you set the 115200 for both but GNSS use 9600 - ZOE-M8B (u-blox.com) page 27.

BR, Jan

1 Like