task-01

Task 1: Starting the RIOT

Task 1.1: Run your first application as Linux process

1. Compile and run on native platform:

   make all term

2. Run help to see a list of all available commands

   > help
   help
   Command              Description
   ---------------------------------------
   reboot               Reboot the node
   ps                   Prints information about running threads.
   

3. Look at the output of ps

   > ps
   ps
           pid | name                 | state    Q | pri | stack ( used) | base       | current
             - | isr_stack            | -        - |   - |  8192 (   -1) |  0x8055520 |  0x8055520
             1 | idle                 | pending  Q |  15 |  8192 ( 6240) |  0x8053240 |  0x80539dd
             2 | main                 | running  Q |   7 | 12288 ( 9312) |  0x8050240 |  0x8050ddd
               | SUM                  |            |     | 28672 (15552)
   

4. Add a print statement to the main() function to output the name of the board.

   printf("This application runs on %s\n", RIOT_BOARD);
   

   Recompile and run again:

   make all term

Task 1.2: Run your first application on real hardware

1. Get to know your hardware

   

   MCU	ATSAMR21G18A
   Family	ARM Cortex-M0+
   Vendor	Atmel
   RAM	32Kb
   Flash	256Kb
   Frequency	up to 48MHz
   FPU	no
   Timers	6 (1x 16-bit, 2x 24-bit, 3x 32-bit)
   ADCs	1x 12-bit (8 channels)
   UARTs / SPIs / I2Cs	max 5 (shared)
   Vcc	1.8V - 3.6V

2. To compile an application for a specific board, we can make use of the BOARD environment variable.

   BOARD=samr21-xpro make all flash term

   This command will compile the application, burn the image onto the samr21-xpro and open a connection to the RIOT shell.

3. Verify the output of RIOT_BOARD matches your hardware.

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