nicFW950 GPIO Diagnostic Console (Patreon)

This firmware enables a diagnostic console over the serial port. After flashing, open a terminal emulator (such as putty) and connect to the COM port of the radio at 115200 baud. It allows a degree of experimentation by probing the GPIO ports.

Use the terminal emulator to send commands:

• A-E
  Change GPIO Base GPIOA, GPIOB, GPIOC etc..

• +/-
  Change Pin 0 to 15

• I or i
  Change pin to input mode

• O or o
  Change pin to output mode

• 1
  Set output pin as HIGH

• 0
  Set output pin as LOW

After every key press a status line will be displayed which shows the read status of the pin, so just press any unused key (such as return) to keep polling the input state.

This firmware does not keep track of the on/off switch (I don't even know which one it is yet). So you will need to pull the battery to turn the radio off. Be careful as there's nothing to indicate the device is powered on.

Known pins

• PA0 = VOX DETECT

• PA1 = BATTERY DETECT

• PA2 = SINGLE IN

• PA3 = BT UART IN

• PA4 = BEEP OUT

• PA5 = APC

• PA6 = FM RESET

• PA7 = V3FM EN

• PA8 = GPS ENABLE

• PA9 = BLUETOOTH RX

• PA10 = BLUETOOTH TX

• PA11 = DEVICE POWER OFF

• PA12 = SK 4?

• PA13 = SW SDA

• PA14 = SW CLK

• PA15 = REPLAY

• PB0 = V3R ENABLE

• PB1 = V3T ENABLE

• PB2 = V3RX ENNABLE

• PB3 = KEYPAD LIGHT

• PB4 = EC1

• PB5 = EC2

• PB6 = SI4732 SCK

• PB7 = SI4732 SDA

• PB8 = MICROPHONE ENABLE

• PB9 = LB POWER ENABLE

• PB10 = GPS RX

• PB11 = GPS TX

• PB12 = FLASH CS

• PB13 = FLASH SCK

• PB14 = FLASH MISO

• PB15 = FLASH MOSI

• PC0 = KEYPAD RAS 0

• PC1 = KEYPAD RAS 1

• PC2 = KEYPAD RAS 2

• PC3 = KEYPAD RAS 3

• PC4 = RF BAND RELAY??

• PC5 = VSW ENABLE

• PC6 = LCD BACKLIGHT

• PC7 = PTT DETECT

• PC8 = SIDEPORT RX DETECT ??

• PC9 = SIDEPORT PTT ??

• PC10 = UART TX

• PC11 = UART RX

• PX12 = BEEP SW

• PC13 = RED LED

• PC14 = GREEN LED

• PC15 = SIDEPORT EXTERNAL SPEAKER DETECTED ??

• PD0 = LCD SDA

• PD1 = LCD CS

• PD2 = LCD RESET

• PD3 = LCD RS

• PD4 = KEYPAD CAS 3

• PD5 = KEYPAD CAS 2

• PD6 = KEYPAD CAS 1

• PD7 = KEYPAD CAS 0

• PD8 TO PD15 = PARALLEL DATA LINES TO LCD

• PE0 = POWER SWITCH

• PE1 = SPEAKER MUTE

• PE2 = PTT 2

• PE3 = PTT

• PE4 = POWER AMP ENABLE

• PE5 = SIDE KEY 1

• PE6 = EXTERNAL PTT

• PE7 = U3T EN

• PE8 = BK4819 SEN1

• PE9 = SW TO BT ??

• PE10 = BK4819 SCK

• PE11 = BK4819 SDA

• PE12 = U3R ENABLE

• PE13 = U6R ENABLE

• PE14 = SW3T ENABLE

• PE15 = BK4819 SEN2

Steer clear of PC10 and PC11 as these are the serial port TX and RX, if you futz with them you'll mess up the serial link.