P8 Smartwatch with ANT+ HRM measurement for Platform IO
ATCWatch https://github.com/atc1441/ATCwatch/tree/master/ATCwatch
SoftDevice with ant+ https://githublab.com/repository/adafruit/Adafruit_nRF52_Bootloader https://judepereira.com/blog/tag/adafruit/ https://www.thisisant.com/developer/components/nrf52832/#tab_protocol_stacks_tab https://www.thisisant.com/my-ant/join-adopter https://download.csdn.net/download/u010438192/11246797 https://github.com/orrmany/Adafruit_nRF52_Arduino.git#develop-ant-plus-ble https://devzone.nordicsemi.com/guides/short-range-guides/b/getting-started/posts/adjustment-of-ram-and-flash-memory
sudo apt install gcc-arm-none-eabi pip install intelhex make BOARD=feather_nrf52832 all
https://blogarak.wordpress.com/2020/03/15/s340-softdevice-adafruit-nrf52840-express-feather/ https://judepereira.com/blog/nrf52840-flash-s340/ https://devzone.nordicsemi.com/guides/short-range-guides/b/getting-started/posts/adjustment-of-ram-and-flash-memory SoftDevice | Version | Minimum RAM | Start FLASH start S132 | 6.1.1 | 0x20001628 | 0x26000 S332 | 6.1.1 | 0x20002000 | 0x30000
https://devzone.nordicsemi.com/f/nordic-q-a/1171/how-do-i-access-softdevice-version-string https://devzone.nordicsemi.com/f/nordic-q-a/68500/--sd-req-for-the-latest-version-of-the-132-softdevice
|s132_nrf52_6.1.1|0x00B7| |s332_nrf52_6.1.1|0x00BA|
-DBLE_STACK_SUPPORT_REQD -DSOFTDEVICE_PRESENT "float_flags": "-mfloat-abi=hard -mfpu=fpv4-sp-d16 -DCONFIG_NFCT_PINS_AS_GPIOS -DNRF52 -DS332 -DNRF51_S332",
https://www.codetd.com/en/article/12564031
LVGL 6.1 chart styles
https://docs.lvgl.io/6.1/object-types/chart.html?highlight=chart#styles