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Build

Dependencies

To build this project, you'll need:

  • A cross-compiler : ARM-GCC (arm-none-eabi 11.2-2022.02)
  • The NRF52 SDK 15.3.0 : nRF-SDK v15.3.0
  • The Python 3 modules cbor, intelhex, click and cryptography modules for the mcuboot tool (see requirements.txt)
    • To keep the system clean, you can install python modules into a python virtual environment (venv) 
      python -m venv .venv
source .venv/bin/activate
python -m pip install wheel
python -m pip install -r tools/mcuboot/requirements.txt
  • A reasonably recent version of CMake (I use 3.16.5)
  • lv_font_conv, to generate the font .c files
    • see lv_font_conv
    • install npm (commonly done via the package manager, ensure node's version is at least 12)
    • install lv_font_conv: npm install lv_font_conv

Build steps

Clone the repo

git clone https://github.com/InfiniTimeOrg/InfiniTime.git
cd InfiniTime
git submodule update --init
mkdir build
cd build

Project generation using CMake

CMake configures the project according to variables you specify the command line. The variables are:

Variable Description Example
ARM_NONE_EABI_TOOLCHAIN_PATH path to the toolchain directory -DARM_NONE_EABI_TOOLCHAIN_PATH=/home/jf/nrf52/gcc-arm-11.2-2022.02-x86_64-arm-none-eabi/
NRF5_SDK_PATH path to the NRF52 SDK -DNRF5_SDK_PATH=/home/jf/nrf52/Pinetime/sdk
USE_JLINK, USE_GDB_CLIENT and USE_OPENOCD Enable JLink mode, GDB Client (Black Magic Probe) mode or OpenOCD mode (set the one you want to use to 1) -DUSE_JLINK=1
CMAKE_BUILD_TYPE (*) Build type (Release or Debug). Release is applied by default if this variable is not specified. -DCMAKE_BUILD_TYPE=Debug
NRFJPROG Path to the NRFJProg executable. Used only if USE_JLINK is 1. -DNRFJPROG=/opt/nrfjprog/nrfjprog
GDB_CLIENT_BIN_PATH Path to arm-none-eabi-gdb executable. Used only if USE_GDB_CLIENT is 1. -DGDB_CLIENT_BIN_PATH=/home/jf/nrf52/gcc-arm-none-eabi-9-2019-q4-major/bin/arm-none-eabi-gdb
GDB_CLIENT_TARGET_REMOTE Target remote connection string. Used only if USE_GDB_CLIENT is 1. -DGDB_CLIENT_TARGET_REMOTE=/dev/ttyACM0
BUILD_DFU (**) Build DFU files while building (needs adafruit-nrfutil). -DBUILD_DFU=1
TARGET_DEVICE Target device, used for hardware configuration. Allowed: PINETIME, MOY-TFK5, MOY-TIN5, MOY-TON5, MOY-UNK -DTARGET_DEVICE=PINETIME (Default)

####(**) Note about CMAKE_BUILD_TYPE: By default, this variable is set to Release. It compiles the code with size and speed optimizations. We use this value for all the binaries we publish when we release new versions of InfiniTime.

The Debug mode disables all optimizations, which makes the code easier to debug. However, the binary size will likely be too big to fit in the internal flash memory. If you want to build and debug a Debug binary, you'll need to disable some parts of the code. For example, the icons for the Navigation app use a lot of memory space. You can comment the content of m_iconMap in the Navigation application to free some memory.

####(**) Note about BUILD_DFU: DFU files are the files you'll need to install your build of InfiniTime using OTA (over-the-air) mechanism. To generate the DFU file, the Python tool adafruit-nrfutil is needed on your system. Check that this tool is properly installed before enabling this option.

CMake command line for JLink

cmake -DARM_NONE_EABI_TOOLCHAIN_PATH=... -DNRF5_SDK_PATH=... -DUSE_JLINK=1 -DNRFJPROG=... ../

CMake command line for GDB Client (Black Magic Probe)

cmake -DARM_NONE_EABI_TOOLCHAIN_PATH=... -DNRF5_SDK_PATH=... -DUSE_GDB_CLIENT=1 -DGDB_CLIENT_BIN_PATH=... -DGDB_CLIENT_TARGET_REMOTE=... ../

CMake command line for OpenOCD

cmake -DARM_NONE_EABI_TOOLCHAIN_PATH=... -DNRF5_SDK_PATH=... -DUSE_OPENOCD=1 -DGDB_CLIENT_BIN_PATH=[optional] ../

Build the project

During the project generation, CMake created the following targets:

  • FLASH_ERASE : mass erase the flash memory of the NRF52.
  • FLASH_pinetime-app : flash the firmware into the NRF52.
  • pinetime-app : build the standalone (without bootloader support) version of the firmware.
  • pinetime-recovery : build the standalone recovery version of infinitime (light firmware that only supports OTA and basic UI)
  • pinetime-recovery-loader : build the standalone tool that flashes the recovery firmware into the external SPI flash
  • pinetime-mcuboot-app : build the firmware with the support of the bootloader (based on MCUBoot).
  • pinetime-mcuboot-recovery : build pinetime-recovery with bootloader support
  • pinetime-mcuboot-recovery-loader : build pinetime-recovery-loader with bootloader support

If you just want to build the project and run it on the Pinetime, using pinetime-app is recommended. See this page for more info about bootloader support.

Build:

make -j pinetime-app

List of files generated: Binary files are generated into the folder src:

  • pinetime-app.bin, .hex and .out : standalone firmware in bin, hex and out formats.
  • pinetime-app.map : map file
  • pinetime-mcuboot-app.bin, .hex and .out : firmware with bootloader support in bin, hex and out formats.
  • pinetime-mcuboot-app.map : map file
  • pinetime-mcuboot-app-image : MCUBoot image of the firmware
  • pinetime-mcuboot-ap-dfu : DFU file of the firmware

The same files are generated for pinetime-recovery and pinetime-recoveryloader

Program and run

Using CMake targets

These target have been configured during the project generation by CMake according to the parameters you provided to the command line.

Mass erase:

make FLASH_ERASE

Flash the application:

make FLASH_pinetime-app

Using JLink

Start JLinkExe:

$ /opt/SEGGER/JLink/JLinkExe -device nrf52 -if swd -speed 4000 -autoconnect 1     
SEGGER J-Link Commander V6.70d (Compiled Apr 16 2020 17:59:37)
DLL version V6.70d, compiled Apr 16 2020 17:59:25

Connecting to J-Link via USB...O.K.
Firmware: J-Link OB-SAM3U128-V2-NordicSemi compiled Mar 17 2020 14:43:00
Hardware version: V1.00
S/N: 682579153
License(s): RDI, FlashBP, FlashDL, JFlash, GDB
VTref=3.300V
Device "NRF52" selected.


Connecting to target via SWD
InitTarget() start
InitTarget() end
Found SW-DP with ID 0x2BA01477
DPIDR: 0x2BA01477
Scanning AP map to find all available APs
AP[2]: Stopped AP scan as end of AP map has been reached
AP[0]: AHB-AP (IDR: 0x24770011)
AP[1]: JTAG-AP (IDR: 0x02880000)
Iterating through AP map to find AHB-AP to use
AP[0]: Core found
AP[0]: AHB-AP ROM base: 0xE00FF000
CPUID register: 0x410FC241. Implementer code: 0x41 (ARM)
Found Cortex-M4 r0p1, Little endian.
FPUnit: 6 code (BP) slots and 2 literal slots
CoreSight components:
ROMTbl[0] @ E00FF000
ROMTbl[0][0]: E000E000, CID: B105E00D, PID: 000BB00C SCS-M7
ROMTbl[0][1]: E0001000, CID: B105E00D, PID: 003BB002 DWT
ROMTbl[0][2]: E0002000, CID: B105E00D, PID: 002BB003 FPB
ROMTbl[0][3]: E0000000, CID: B105E00D, PID: 003BB001 ITM
ROMTbl[0][4]: E0040000, CID: B105900D, PID: 000BB9A1 TPIU
ROMTbl[0][5]: E0041000, CID: B105900D, PID: 000BB925 ETM
Cortex-M4 identified.
J-Link>

Use the command loadfile to program the .hex file:

J-Link>loadfile pinetime-app.hex 
Downloading file [pinetime-app.hex]...
Comparing flash   [100%] Done.
Erasing flash     [100%] Done.
Programming flash [100%] Done.
Verifying flash   [100%] Done.
J-Link: Flash download: Bank 0 @ 0x00000000: 1 range affected (4096 bytes)
J-Link: Flash download: Total time needed: 0.322s (Prepare: 0.043s, Compare: 0.202s, Erase: 0.003s, Program: 0.064s, Verify: 0.000s, Restore: 0.007s)
O.K.

Then reset (r) and start (g) the CPU:

J-Link>r
Reset delay: 0 ms
Reset type NORMAL: Resets core & peripherals via SYSRESETREQ & VECTRESET bit.
Reset: Halt core after reset via DEMCR.VC_CORERESET.
Reset: Reset device via AIRCR.SYSRESETREQ.
J-Link>g

JLink RTT

RTT is a feature from Segger's JLink devices that allows bidirectional communication between the debugger and the target. This feature can be used to get the logs from the embedded software on the development computer.

  • Program the MCU with the code (see above)
  • Start JLinkExe
$ JLinkExe -device nrf52 -if swd -speed 4000 -autoconnect 1

Start JLinkRTTClient

$ JLinkRTTClient

Using GDB and Black Magic Probe (BMP)

Enter the following command into GDB:

target extended-remote /dev/ttyACM0
monitor swdp_scan
attach 1
file ./pinetime-app-full.hex 
load
run

Example :

$ /home/jf/nrf52/gcc-arm-none-eabi-8-2019-q3-update/bin/arm-none-eabi-gdb

(gdb) target extended-remote /dev/ttyACM0
Remote debugging using /dev/ttyACM0
(gdb) monitor swdp_scan
Target voltage: ABSENT!
Available Targets:
No. Att Driver
 1      Nordic nRF52 M3/M4
 2      Nordic nRF52 Access Port 

(gdb) attach 1
Attaching to Remote target
warning: No executable has been specified and target does not support
determining executable automatically.  Try using the "file" command.
0xfffffffe in ?? ()
(gdb) file ./pinetime-app-full.hex 
A program is being debugged already.
Are you sure you want to change the file? (y or n) y
Reading symbols from ./pinetime-app-full.hex...
(No debugging symbols found in ./pinetime-app-full.hex)
(gdb) load
Loading section .sec1, size 0xb00 lma 0x0
Loading section .sec2, size 0xf000 lma 0x1000
Loading section .sec3, size 0x10000 lma 0x10000
Loading section .sec4, size 0x5150 lma 0x20000
Loading section .sec5, size 0xa000 lma 0x26000
Loading section .sec6, size 0x10000 lma 0x30000
Loading section .sec7, size 0xdf08 lma 0x40000
Start address 0x0, load size 314200
Transfer rate: 45 KB/sec, 969 bytes/write.

How to generate files needed by the factory

These files are needed by the Pine64 factory to flash InfiniTime as the default firmware on the PineTimes.

Two files are needed: an HEX (.hex) file that contains the content of the internal flash memory (bootloader + InfiniTime) and a binary (.bin) file that contains the content of the external flash memory (recovery firmware).

merged-internal.hex

First, convert the bootloader to hex:

<ARM TOOLCHAIN>/bin/arm-none-eabi-objcopy -I binary -O ihex ./bootloader.bin ./bootloader.hex

where bootloader.bin is the last stable version of the bootloader.

Then, convert the MCUBoot image of InfiniTime:

<ARM TOOLCHAIN>/bin/arm-none-eabi-objcopy -I binary -O ihex --change-addresses 0x8000 ./pinetime-mcuboot-app-image-1.6.0.bin ./pinetime-mcuboot-app-image-1.6.0.hex

where pinetime-mcuboot-app-image-1.6.0.bin is the bin of the last MCUBoot image of InfiniTime.

Pay attention to the parameter --change-addresses 0x8000. It's needed to ensure the image will be flashed at the offset expected by the bootloader (0x8000).

Finally, merge them together with mergehex:

/opt/mergehex/mergehex -m ./bootloader.hex ./pinetime-mcuboot-app-image-1.6.0.hex  -o merged-internal.hex

This file must be flashed at offset 0x00 of the internal memory of the NRF52832.

spinor.bin

This file is the MCUBoot image of the last stable version of the recovery firmware. It must be flashed at offset 0x00 of the external SPINOR flash memory.