Carbon Hardware User Manual

Linux Host

Linux Host

This section show how to install an operating system to your Carbon using the Flashing over UART method on a Linux host computer. ***

Step 1: Enter the STM32 Bootloader mode
Step 2: Build or download a sample application in Zephyr
Step 3: Flash the application to Carbon

####Step 1: Enter the STM32 Bootloader mode

Connect the micro-USB cable to the USB-UART port
Press the BOOT0 switch and hold
While holding BOOT0 switch, also press the RST switch (At this point you should be pressing two switches)
Release the RST switch, then release the BOOT0 switch.

Run the following command:

$ sudo apt-get install stm32flash
$ sudo stm32flash /dev/ttyUSB0
stm32flash 0.5

http://stm32flash.sourceforge.net/

Interface serial_posix: 57600 8E1
Version      : 0x31
Option 1     : 0x00
Option 2     : 0x00
Device ID    : 0x0433 (STM32F401xD(E))
- RAM        : 96KiB  (12288b reserved by bootloader)
- Flash      : 512KiB (size first sector: 1x16384)
- Option RAM : 16b
- System RAM : 30KiB

If you see something similar to the output above, you’re in the STM32 Bootloader mode.

####Step 2: Build or download a sample application in Zephyr

Build or download an application and proceed to Step 3

####Step 3: Flash the application to Carbon

Go over Step 1 again, to enter the STM32 Bootloader mode
Flash the application and OS to Carbon STM32F4 as follows:
```
$ sudo stm32flash -b 115200 -g 0x0 -w samples/<path>/<to>/zephyr.bin /dev/ttyUSB0
```
The path to your zephyr.bin file will depend on the type of file you have built.

Example:

Path to disco: /samples/basic/disco/outdir/96b_carbon/zephyr.bin
Path to shell: /samples/shell/outdir/96b_carbon/zephyr.bin

Congratulations! You are now booting your newly compiled operating system and application on your Carbon!