pl18 can not use Trainer port

[NanoNM]

Is there an existing issue for this problem?

• I have searched the existing issues

What part of EdgeTX is the focus of this bug?

Transmitter firmware

Current Behavior

into Trainer and set mode to slave
The oscilloscope detects the waveform shown in the figure below

Expected Behavior

my radiomaster pocket ppm wave

Steps To Reproduce

into Trainer and set mode to slave plug into aidu cable

Version

2.11.3

Transmitter

Flysky PL18/PL18EV

Operating System (OS)

No response

OS Version

No response

Anything else?

No response

[pagrey]

Under MODEL/SETUP is the Trainer Mode set to CH1-4? Sometimes it gets set to CH1-0 and then you wouldn't output any signal which is what the scope seems to show.

A bit of unsolicited advice, turn off auto-ranging. Know the input signal you are expecting and set the scope accordingly. I think the signal in the first image is just the noise you see in the flat section on the second and not a useful waveform.

[NanoNM]

Thanks for your reply. The first issue is that my rmpocket ppm was pulled up to 3.3v and not pulled up in pl18. I have confirmed to select ch1-ch8 channels in the settings. The sec issue, when I turn on the slave mode, the rising and falling edges appear, and when I turn off the slave mode, the rising and falling edges disappear

[NanoNM]

i think i fix this
i changed pl18_hal.h

original

#define TRAINER_IN_GPIO                 GPIO_PIN(GPIOD, 12) // PD.12
#define TRAINER_IN_TIMER_Channel        LL_TIM_CHANNEL_CH1

#define TRAINER_OUT_GPIO                GPIO_PIN(GPIOD, 13) // PD.13
#define TRAINER_OUT_TIMER_Channel       LL_TIM_CHANNEL_CH2

my

#define TRAINER_IN_GPIO                 GPIO_PIN(GPIOD, 12) // PD.12
#define TRAINER_IN_TIMER_Channel        LL_TIM_CHANNEL_CH1

#define TRAINER_OUT_GPIO                GPIO_PIN(GPIOD, 12) // PD.13
#define TRAINER_OUT_TIMER_Channel       LL_TIM_CHANNEL_CH1

[NanoNM]

#define TRAINER_IN_GPIO GPIO_PIN(GPIOD, 12) // PD.12
#define TRAINER_IN_TIMER_Channel LL_TIM_CHANNEL_CH1

#define TRAINER_OUT_GPIO GPIO_PIN(GPIOD, 12)
#define TRAINER_OUT_TIMER_Channel LL_TIM_CHANNEL_CH1

now everything be perfect i can use pl18 be salve or master and
But I don't know what this change will do to other devices based on pl18hal

[NanoNM]

not that perfect External cannot use ppm and can not use elrsv3lua config External

shit mabey i broken my radio

[richardclli]

#define TRAINER_IN_GPIO GPIO_PIN(GPIOD, 12) // PD.12 #define TRAINER_IN_TIMER_Channel LL_TIM_CHANNEL_CH1

#define TRAINER_OUT_GPIO GPIO_PIN(GPIOD, 12) #define TRAINER_OUT_TIMER_Channel LL_TIM_CHANNEL_CH1

now everything be perfect i can use pl18 be salve or master and But I don't know what this change will do to other devices based on pl18hal

You mapped in and out with the same pin, this will cause problem, I think the problem maybe the IN/OUT is swapped, try swapping in and out pin and see if this works.

#define TRAINER_IN_GPIO                 GPIO_PIN(GPIOD, 13) // PD.13
#define TRAINER_IN_TIMER_Channel        LL_TIM_CHANNEL_CH2

#define TRAINER_OUT_GPIO                GPIO_PIN(GPIOD, 12) // PD.12
#define TRAINER_OUT_TIMER_Channel       LL_TIM_CHANNEL_CH1

[NanoNM]

#define TRAINER_IN_GPIO GPIO_PIN(GPIOD, 12) // PD.12 #define TRAINER_IN_TIMER_Channel LL_TIM_CHANNEL_CH1
#define TRAINER_OUT_GPIO GPIO_PIN(GPIOD, 12) #define TRAINER_OUT_TIMER_Channel LL_TIM_CHANNEL_CH1
now everything be perfect i can use pl18 be salve or master and But I don't know what this change will do to other devices based on pl18hal

You mapped in and out with the same pin, this will cause problem, I think the problem maybe the IN/OUT is swapped, try swapping in and out pin and see if this works.

#define TRAINER_IN_GPIO                 GPIO_PIN(GPIOD, 13) // PD.13
#define TRAINER_IN_TIMER_Channel        LL_TIM_CHANNEL_CH2

#define TRAINER_OUT_GPIO                GPIO_PIN(GPIOD, 12) // PD.12
#define TRAINER_OUT_TIMER_Channel       LL_TIM_CHANNEL_CH1

I tried swapping GPIO, which caused the radio to not function as a master. Unfortunately, I seem to have damaged my PL18, and now the CRSF feedback cannot be transmitted to the radio. I bought a new chip to see if it can be fixed