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Hardware
fanoush edited this page Nov 18, 2018
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This is summary of findings below so you don't need to read the rest.
- 128x32 SSD1306 OLED - SPI2 SCK 6 MOSI 5 RST 4 DC 28 CS 29
- PAH8001 HR sensor - TWI0 SCL 7 SDA 8 speed 400kbps, enable pin 26, I2C address 0x6b
- KX022(?) accelerometer - TWI1 scl 13 sda 14 speed 400kbps, I2C adress 0x1f
- USB plug data pins 22,23 - configured in DFU bootloader as UART RX(22) TX(23) baud rate 38400
- motor - pin 25
- touch button - pin 30, goes low when touched
- charging power detect - pin 2
strings dsd6-flash.bin | grep -i '\.c' | sort | uniq
..\components\ble\device_manager\device_manager_peripheral.c
..\components\libraries\simple_timer\app_simple_timer.c
..\components\libraries\timer\app_timer.c
..\components\softdevice\common\softdevice_handler\softdevice_handler.c
..\source\HeartRate\HeartRate_PAH8001.c
..\source\src\ds_clock.c
..\source\src\ds_hisdata.c
..\source\src\ds_power.c
..\source\src\ds_spi_master.c
..\source\src\ds_wdt.c
..\source\src\gclock.c
..\source\src\i2cdriver.c
..\source\src\KeyEventHandler.c
..\source\src\kx_gsensor.c
..\source\src\main.c
..\source\src\MainUI.c
..\source\src\MotorEventHandler.c
..\source\src\uartdriver.c
- PAH8001 HR sensor
- KX gsensor
- i2c driver - gsensor and hr sensor?
- spi driver - OLED?
- uart - hopefully on USB data pins?
Register dumps made over SWD when rebooted to DFU bootloader (serial enabled!) and later also main app (no serial but rest of HW)
0x40002500: 0x00000004 0x00000000 0xffffffff 0x00000017
0x40002510: 0xffffffff 0x00000016 0x00000000 0x00000000
0x40002524: 0x009d5000
rx 0x16 22
tx 0x17 23
no parity
baudrate 38400
0x40023500: 0x00000001
0x4002350c: 0x00000006
0x40023508: 0x00000005
0x40023510: 0xffffffff
0x40023524: 0x80000000
0x40023554: 0x00000000
spi2 master sck 5 mosi 6 miso -1 speed 8mbps config msb,sample leading shift trailing,acthigh
0x40004500: 0x00000005 = ENABLED TWI
0x40004508: 0x0000000d = PSELSCL 13
0x4000450c: 0x0000000e = PSELSDA 14
0x40004524: 0x06680000 = FREQUENCY 400kbps
TWI1 scl 13 sda 14 speed 400kbps
0x40003500: 0x00000005
0x40003508: 0x00000007
0x4000450c: 0x00000008
0x40003524: 0x06680000
TWI0 scl 7 sda 8 speed 400kbps
0x50000514: 0x36000070 DIR
0x50000504: 0x00006190 OUT
0x50000510: 0x41216040 IN no charging
0x50000510: 0x40216044 IN charging
0x50000510: 0x40e16004 IN display on
after using also hr sensor
0x50000504: 0x34806190 00110100100000000110000110010000 OUT
0x50000510: 0x40e17984 01000000111000010111100110000100 IN (charging, display off)
0x50000514: 0x36800070 00110110100000000000000001110000 DIR (1=output,0=input)
inputs:
pin 2 goes high when power is attached to usb
pin 30 touch button, goes low when touched
outputs:
pin 4 when display is on and set to 0 display goes off (RST?)
pin 25 motor
pin 26 enable HR sensor
pin 28 ?
pin 29 ?