Tx16 MKIII Flysky Digital FS-HZCZ03-ADJ Support

[Boxxxer64]

Is there an existing issue for this feature request?

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Is your feature request related to a problem?

Will it be possible to install the Flysky Digital FS-HZCZ03-ADJ gimbals in the Tx16s mk3? I would be very happy if this were supported again like tx16 MkII or Jumper t15.

Regards Martin

Describe the solution you'd like

FS-HZCZ03-ADJ

Describe alternatives you've considered

No response

Additional context

No response

[Boxxxer64]

@richardclli

Would you make it posible?

[rotorman]

Flysky digital hall gimbals need minimally a single serial port RX line, instead of 4 analog voltage sampling pins that the stock gimbals use.

On TX16s MKI/MKII, the Flysky gimbals were connected to the same header, as one side of the analog gimbals, as there, the analog pins of STM32F429 were configurable as UART4 (see e.g.: https://github.com/EdgeTX/edgetx/wiki/Flysky-Hall-Sticks-Mod ).

TX16s MK3 uses a more modern microcontroller - the STM32H750XBH6. The stick analog sampling is wired to pins:

edgetx/radio/src/targets/tx16smk3/hal.h

Lines 227 to 230 in 06ae9c6

	#define ADC_GPIO_PIN_STICK_LH LL_GPIO_PIN_6 // PA.06
	#define ADC_GPIO_PIN_STICK_LV LL_GPIO_PIN_3 // PC.03
	#define ADC_GPIO_PIN_STICK_RV LL_GPIO_PIN_4 // PC.04
	#define ADC_GPIO_PIN_STICK_RH LL_GPIO_PIN_5 // PC.05

none that according to my knowledge can be switched to work as a serial port.

But all hope is not lost, as TX16s MK3 has at least two otherwise by default not used serial ports - USART3 and UART5, both on JST GH headers on the mainboard. From electrical connectivity side, this is thus possible by sacrifying either AUX1 or AUX2 for the Flysky digital gimbals.

edgetx/radio/src/targets/tx16smk3/hal.h

Line 532 in 06ae9c6

#define AUX_SERIAL_RX_GPIO GPIO_PIN(GPIOB, 5) // PB.05

or

edgetx/radio/src/targets/tx16smk3/hal.h

Line 545 in 06ae9c6

#define AUX2_SERIAL_RX_GPIO GPIO_PIN(GPIOB, 11) // PB.11

[Boxxxer64]

Then I hope the team implements that in EdgeTX. I already have gimbals and adapters here, and I don't want to use AG02 gimbals. Nothing beats Flysky gimbals. Thanks in advance, I'll wait patiently.

Thanks Martin

[Boxxxer64]

Some News? I had gimbals and Adapter here for Test!