ID107-HR-Plus-Reverse-Engineering {Work In Progress}

Espruino on ID107 HR Plus watch

ID107 HR Plus Pin Mapping:

Pin Number	Peripheral		Pin Number	Peripheral		Pin Number	Peripheral
D0			D12			D23	TEST_PAD_1 Serial UART Tx
D1			D13			D24	TEST_PAD_2 Serial UART Rx
D3	KX022_SDA		D14			D25	VIBRATION (HIGH = ON)
D4			D15	S263_SCL		D26	OLED_POWER_CONTROL (HIGH = ON)
D5	KX022_SLC		D16	S263_SDA		D27	FLASH_MISO
D6			D17	S263_RDY		D28	FLASH_CS
D7			D18	SI1143_LED		D29	BATTERY_VOLTAGE
D8			D19	OLED_CS		D30	OLED_CLK/FLASH_CLK
D9	SI1143_SCL		D20	OLED_RST		D31	OLED_MOSI 31/FLASH_MOSI
D10	SI1143_SDA		D21
D11			D22	OLED_DC

Flasing Espruino firmware in ID107 HR Plus:

A custom Espruino build download is compiled for ID107HrPlus [BOARD.PY]. Remember that this build only contains teh application code and NOT the Espruino bootloader.

There was issue that the bootloader starts watchdog at each boot so you need to ping it from espruino or it will will reboot, so once you connect via webide you need to paste code like setInterval(function(){poke32(0x40010600,0x6E524635);},1000) to ping watchdog each second. otherwise you'll see periodical Espruino disconnects/reboots.

You should also running this code all the time, when tracker is powered on, otherwise bootloader will remove the Espruino from the tracker the enter in DFU mode.

SPI Flash is PN25F08B. Chip seems to be functionally identical with many of the more common Winbond W25 ones.

SPI Flash and OLED shares the common SPI line with different SS/Chip Selects.

OLED Code

function go(){
   require("Font6x12").add(Graphics);
   g.setFont6x12();
   g.clear();
   // write some text
   g.drawString("Hello World",0,0);
   // write to the screen
   g.flip(); 
}
// SPI
SPI1.setup({mosi: D31,sck: D30});
var g = require("ID107PlusOLED.js").connectSPI(SPI1, D22, D20, go, {cs: D19, pwr:D26});