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Picotracker Lora installation instructions.md

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Picotracker Lora

Code improvements added:

  • Compressed NVM and XOR write changing bytes. On average, it updates NVM in under 100 ms.
  • Disable sticky uplinksreq
  • Create CppuTest Unittesting with 29.5 % line coverage. This includes all original Loramac code I didn't modify
  • Put in feature to switch between ABP and OTAA between each transmission, to tx on Helium network and Things Network on alternate transmissions.
  • Save NVM data in 3 seperate parts of the EEPROM to emulate 3 different OTAA devices. Required to connect to servers in US, EU and CN.

run the following command to install dependencies

sudo apt-get install cmake
sudo apt install gcc-arm-none-eabi
sudo apt install openocd
sudo apt-get install -y gdb-multiarch # for gdb
sudo apt install lcov # for coverage reports of cpputest
sudo apt install gcov # for coverage reports of cpputest
sudo apt install gcc-multilib g++-multilib # To compile for 32 bit

Then Install vs code. Install the following extensions:

C/C++
CMake
CMake Tools
Cortex-Debug
GNU Linker Map files  # to view map files
cpputest-adaptor 1.6.0

Follow this tutorial to allow stlink to connect https://electromake.pl/how-to-configure-ubuntu-to-program-stm32/

Check if the st link is discoverable

sudo apt install stlink-tools
st-info --probe

output should look like this

medad@medad-ThinkPad-P51:~$ st-info --probe
Found 1 stlink programmers
 serial: 323705012612344d314b4e00
openocd: "\x32\x37\x05\x01\x26\x12\x34\x4d\x31\x4b\x4e\x00"
  flash: 196608 (pagesize: 128)
   sram: 20480
 chipid: 0x0447
  descr: L0x Category 5 device

Now then you should ping the chip:

medad@medad-ThinkPad-P51:~$ st-flash read dummy.bin 0 0xFFFF
st-flash 1.6.0
2021-07-15T23:19:26 INFO usb.c: -- exit_dfu_mode
2021-07-15T23:19:26 INFO common.c: Loading device parameters....
2021-07-15T23:19:26 INFO common.c: Device connected is: L0x Category 5 device, id 0x20086447
2021-07-15T23:19:26 INFO common.c: SRAM size: 0x5000 bytes (20 KiB), Flash: 0x30000 bytes (192 KiB) in pages of 128 bytes

in launch.json, had to set "debugServerArgs": "-f interface/stlink-v2.cfg -f target/stm32l0.cfg"

not stlink-v2-1.cfg

had to set "miDebuggerPath": "gdb-multiarch",

Run Openocd to get debug info on chip:

medad@medad-ThinkPad-P51:~$ "/usr/bin/openocd" -f interface/stlink-v2.cfg -f target/stm32l0.cfg
Open On-Chip Debugger 0.10.0
Licensed under GNU GPL v2
For bug reports, read
	http://openocd.org/doc/doxygen/bugs.html
Info : auto-selecting first available session transport "hla_swd". To override use 'transport select <transport>'.
adapter speed: 300 kHz
adapter_nsrst_delay: 100
Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
none separate
Info : Unable to match requested speed 300 kHz, using 240 kHz
Info : Unable to match requested speed 300 kHz, using 240 kHz
Info : clock speed 240 kHz
Info : STLINK v2 JTAG v37 API v2 SWIM v7 VID 0x0483 PID 0x3748
Info : using stlink api v2
Info : Target voltage: 3.275067
Info : stm32l0.cpu: hardware has 4 breakpoints, 2 watchpoints

Now for serial output, install arduino with ubuntu Software.

Then run to use usb

sudo usermod -a -G dialout $USER

Then restart the computer. You should be able to see data come through on the serial terminal. It could look like this:


###### ===================================== ######

Application name   : periodic-uplink-lpp
Application version: 1.0.0
GitHub base version: 4.4.7

###### ===================================== ######

DevEui      : 60-81-F9-99-C0-06-CC-BC
JoinEui     : 60-81-F9-C2-62-7E-35-8C
Pin         : 00-00-00-00


###### =========== MLME-Request ============ ######
######               MLME_JOIN               ######
###### ===================================== ######
STATUS      : OK

###### =========== MLME-Confirm ============ ######
STATUS      : Rx 2 timeout

###### =========== MLME-Request ============ ######
######               MLME_JOIN               ######
###### ===================================== ######
STATUS      : OK

Erase chip + eeprom

Run the following command:

python3 -m pyocd pack install stm32l073 # installs device pack. Run only once.
python3 -m pyocd erase -t STM32L073CZYx --chip

Dump eeprom with:

st-flash read eeprom.hex 0x08080000 0x17FF # size of eeprom

location of target files:

/usr/share/openocd/scripts/target

Running unit tests

To run unittests, on vs code, change current build variant from debug to Unittest_build. Then change active kit to GCC x.x.x x86_64-linux-gnu (your computer's gcc compiler). Then hit build. To go back to building for the MCU, switch back current build variant to debug and change active kit to arm-none-eabi

Running coverage reports

Run the following command in terminal:

medad@medad-ThinkPad-P51:~/Documents/GitHub/LoRaMac-node/build$ make coverage_my

useful info on bss, text etc

https://electronics.stackexchange.com/questions/363931/how-do-i-find-out-at-compile-time-how-much-of-an-stm32s-flash-memory-and-dynami