HWINFO.txt

microcontroller: STM8S105K6T6C LQFP32, crystal 18.432 MHz
		 at my unit is written STM8S105K4T6C, but it has 32KB so
		   this must be wrong sign
		 crystal frequency 18.432 MHz is more then max specified
		   for this microcontroller (16Mhz) and is good for UART
		   to get exact frequencies, but UART is not used at this
		   radio
LCD driver: HOLTEK HT1621B
encoder: 30 ticks/360deg

processor pinout (i-input/o-output, f-floating/o-opencollector/p-push_pull, f-fast):
    PB0         if  AIN0 steering
    PB1         if  AIN1 throttle
    PB2         if  AIN2 CH3 button, resistor 1K to +5V
    PB3         if  AIN3 battery voltage (3:1 divider)
    PB4         oof button row B4
    PB5         oof button row B5
    PC1         if  TIM1_CH1 - rotate encoder
    PC2         if  TIM1_CH2 - rotate encoder
    PC3         opf CS/ to LCD controller
    PC4         oof button row C4
    PC5         ip  button col C5
    PC6         ip  button col C6
    PC7         ip  button col C7
    PD0         op  PPM signal
    PD2         op  LCD backlight
    PD3         oof button row D3
    PD4         op  buzzer
    PE5         op  DATA to LCD controller
    PF4         op  WR/ to LCD controller
    -----
    PD1         SWIM
    PD5         ? UART TX
    PD6         ? UART RX
    PD7         ?

buttons matrix:
	C5			C6			C7
B4	TrimSteerLeft		TrimCh3_Minus		End
B5	TrimSteerRight		TrimCh3_Plus		Back
D3	TrimThrotFwd		DR_Plus
C4	TrimThrotBack		DR_Minus		Enter