Running Chronometer demo on STM32LDiscover

Enter inside your NuttX Workspace, i.e.:

$ cd nuttxspace/

Enter inside /nuttx and update it:

$ cd nuttx/
$ git pull

Go to /apps directory and update it:

$ cd ../apps/
$ git pull

Return to /nuttx and clear the repository:
$ cd –
$ make distclean

Configure the stm32ldiscovery to use the chrono board profile:

$ ./tools/configure.sh stm32ldiscovery/chrono
Copy files
Refreshing…

Compile it:

$ make

Flash the Firmware:

$ openocd -f interface/stlink.cfg -f target/stm32l1.cfg -c init -c “reset halt” -c “flash write_image erase nuttx.bin 0x08000000”

Open other terminal and execute:

$ ./tools/ocdconsole.py

Return to previous terminal and execute:

$ openocd -f interface/stlink.cfg -f target/stm32l1.cfg

You should see the NuttX Shell starting in the other terminal:

$ ./tools/ocdconsole.py
==Link Activated

NuttShell (NSH)
nsh>

Just type “help” or “?” to see if chrono app is there if so run it:

nsh> ?
help usage: help [-v] []

? echo exit hexdump ls mh sleep xd
cat exec help kill mb mw usleep

Builtin Apps:
chrono slcd
nsh> chrono
Opening /dev/slcd0 for read/write access
Attributes:
rows: 1 columns: 6 nbars: 4
max contrast: 7 max brightness: 0
button_daemon: Running
button_daemon: Opening /dev/buttons
button_daemon: Supported BUTTONs 0x01

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