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help programing TIM1 on STM32f103rbt6

Hi,

I'm writing here in order to find some help in order to program the TIM1 as PWM and make the port PA8 move, as by now I can't get it.

I've already done some projects, using other timers (TIM2,3...) and every think worked fine but when I use the TIM1 it just don't do anything, I'm using the demoboard mcbstm32 and I've proved that I can't move this port if I set it as GPoutput and move it directly so it's not a hard problem.

The main question is that I've already used the examples given by keil, the one that you can fin in :
C:\Keil\ARM\Examples\ST\STM32F10x\TIM1\Example1 but it doesn't work.

I'm using the keil version v3.15 , can't it be a library problem?, in hat case how I change he libraries.

I need help, I don't know what to do and I really need this port works for my company project.

best regards

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