compiled code doesnt seem to run on redbearlabblenano

[mogorman]

i have a version 1.0 redbearlab ble nano. I created simple blink script and had it upload it. It just bricks my device. I can reflash it with arduino boot loader or sample mbed blinky lights demo and it works fine. I can also program it via arduino ide and have no problems with it. Anything I can do to try to debug let me know.

[mogorman]

i tried taking the ld linker script from the arduino code and used it in build flags so that i could try uploading the code using their bootloader. this also failed. I don't think platformio is generating a proper intel hex to be uploaded.

[mogorman]

ive also tried this on my mac and gnu/linux machine, as well as enabling sync flag on mounting of the drive just in case.

[valeros]

Hi @mogorman! Thanks for your report! Could I ask you to test some firmwares with your board? Your board should just blink:

#include "mbed.h"
DigitalOut myled(P0_19);

int main(void)
{
    while (1)
    {
        myled = !myled;
        wait(1);
    } 
}

[mogorman]

yes i can.

[mogorman]

i tried copying all of them to the board. none of them blinked the led on pin P0_19. I didn't know what to look for aside from that to tell if it worked? they did all take much longer to upload, like the intel hex was legit though. What should I be looking for once the code is running?

[valeros]

Please try this version. Does it work?

[mogorman]

it looks like this one attempts to flash but fails, when i reboot the board, it still is running the arduino bootloader from redbear labs

[valeros]

Let's put aside all about Arduino. Do you have removable mass storage disk named MBED in your system? Firmware from mbed cloud compiler works fine?

[mogorman]

im not using arduino to flash. aside from one time i tried that way. sorry for confusion. I have been copying to the MBED storage device on my pc. I haven't tried the cloud compiler. let me set up account and try that now.

[mogorman]

can confirm that mbed web compiler works with the following code

#include "mbed.h"

DigitalOut myled(LED1);

int main()
{
    while(1) {
        myled = 1;
        wait(1);
        myled = 0;
        wait(1);
    }
}

[valeros]

Thanks. Could you test please this hex? It's compiled from exported project for GCC toolchain.

[mogorman]

did not seem to run. i tested by flashing code that does not use led. then flashing this code. then after seeing this code did not work i flashed with my blink code i made in web compiler and confirmed it ran.

[mogorman]

using there local builder it is producing a 14k hexfile compared to the 300k hexfile the web produced with same code

[valeros]

Yep, looks like it's not PlatformIO problem. I will look for a workaround and let you know if there is any information. Thanks!

[mogorman]

actually i take that back. it does work. i didnt have srecord installed in environment. it needed to combine the two hexs together

[mogorman]

I just tested the output of platformio generated code when combined with the hex like they do and it worked

srec_cat mbed/TARGET_RBLAB_BLENANO/TARGET_NORDIC/TARGET_MCU_NRF51822/Lib/s130_nrf51822_1_0_0/s130_nrf51_1.0.0_softdevice.hex -intel .pioenvs/redbear/firmware.hex -intel -o test.hex -intel --line-length=44

[mogorman]

actually i just confirmed its same softdevice shipped with platformio