Problem With Output pwm At Pa0 & Pa8

[aghfars]

hello i want to have a Separately PWM at pin PA0 & PA8 but when i set PA8 on 127 or any number on (8 bit Resolution) i have the same output at pin PA0 & And conversely.
iam not test on another Resolution. i tested and same results
when i detach my servo its ok.
I'm in a hurry
Help..
ROBO.zip

[fpistm]

Hi without more details, we could not help.
Which board you used? Core version?...

Pins are probably using the same timer instance and channel...

[aghfars]

Hi without more details, we could not help.
Which board you used? Core version?...

Pins are probably using the same timer instance and channel...

the board is stm32f103c8t6 Bluepill (64kB)
core Version is 1.9.0
no , one pin on timer 1 and another one on timer 2
and i test again when i write my servo pos on pin PA8 and after that i call the analogWrite on pin PA0 or PA3 have same pwm value on PA8 and PA0 or PA3. (Makes the servo motor rotate 360 degrees like a normal motor)
i didnt test with PA2 & PA3.
the is:
Now what I have done to solve the problem is that before giving the angle to the servo, I attach the servo and after a while I detach it and write the analogWrite again.

[ABOSTM]

Hi @aghfars,
Looking at bluepill PeripheralPins.c

Arduino_Core_STM32/variants/PILL_F103XX/PeripheralPins.c

Line 98 in 2d652e2

{PA_0, TIM2, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE, 1, 0)}, // TIM2_CH1

PA0 is mapped on TIM2

and looking at variant.h

Arduino_Core_STM32/variants/PILL_F103XX/variant.h

Line 112 in 2d652e2

#define TIMER_SERVO TIM2

Servo is mapped also on TIM2

This is clearly incompatible. If possible I suggest you to use TIM6 or TIM7 for Servo(if not used in your application), because they have no hardware output which is fine for servo.

[aghfars]

Hi @aghfars,
Looking at bluepill PeripheralPins.c

Arduino_Core_STM32/variants/PILL_F103XX/PeripheralPins.c

Line 98 in 2d652e2

{PA_0, TIM2, STM_PIN_DATA_EXT(STM_MODE_AF_PP, GPIO_PULLUP, AFIO_NONE, 1, 0)}, // TIM2_CH1

PA0 is mapped on TIM2
and looking at variant.h

Arduino_Core_STM32/variants/PILL_F103XX/variant.h

Line 112 in 2d652e2

#define TIMER_SERVO TIM2

Servo is mapped also on TIM2
This is clearly incompatible. If possible I suggest you to use TIM6 or TIM7 for Servo(if not used in your application), because they have no hardware output which is fine for servo.

stm32f103c8t6 has only 4 timer but i use the timer 1 PA8 on timer 1
thanks