Firmware
barebone firmware for the Bip that uses FreeRTOS and libopencm3.
To port RebbleOS, we need to switch first from the pheripheral library (that doesn't support the L4 family) they're currently using to libopencm3.
Components
MCU - STM32L476JEY6
Ultra-low-power with FPU ARM Cortex-M4 MCU 80 MHz with 512 Kbytes Flash, LCD, USB OTG, DFSDM.
LCD - JDI LPM013M126C
1.28” MIP Reflective 3 bit Color LTPS TFT LCD with Back Light.
Touchscreen - IT7259
Self-Cap Touch Controller for Wearable Device.
Can someone who lives in China download the datasheet from csdn? https://download.csdn.net/download/raydom07/10628349
Similar model:
Flash memory - Winbond 25Q64FWIQ
1.8V 64M-BIT serial flash memory with DUAL/QUAD SPI & QPI
Bluetooth - DA14580
Bluetooth 4.2 low energy SoC.
GPS - Sony CXD5603GF
GPS/GNSS Receiver and Positioning Engine Solution, with GPS/GLONASS & Galileo/BeiDou support. In this configuration, there is a flash memory connected to the chip.
Barometer - DPS310
Accelerometer - LIS2DH12
3-axis MEMS accelerometer, ultra-low-power, ±2g/±4g/±8g/±16g full scale, high-speed I2C/SPI digital output, embedded FIFO, high-performance acceleration sensor, VFLGA package.
Compass - AK09918
3-axis electronic compass IC with high sensitive Hall sensor technology.
Battery charger - BQ24045
1A, Single-Input, Single Cell Li-Ion Battery Charger for 4.35v battery. Also, BQ24040 is compatible for 4.2v battery for replacment.
Vital signs module - AS7024
Step down voltage converter - TPS62743
Ultra-low-power 300mA to 400mA Step-Down Buck DCDC Converter with 360nA Iq in WCSP package.
Pinouts (thanks to Viktor_7)
