A terrible magical conflict problem

[chenyu]

Hi: I've developed nrf51822 about 1 year.I find a very terrible magical conflict problem.Please verify. Thank you. Platform: nrf51822QFAA H0 + SDK9 + KEIL5 1\ I want to use gpio(pin1) and uart(pin0 and pin2),and pin1 generate a pulse by nrf_delay_us(),It can work normally if not config UART_INIT, but when I config UART, the pulse width jumps seriously. please see"GPIOTEST1" 2\I want to use gpio and uart and gazell together. gpio to generate a pulse by timer,and It can work normally if disable gzll, but when I use (nrf_gzll_enable())function, the pulse width jumps seriously.Please see "Host project line 115" Please verify. Thank you. GPIOTEST1.zip Host project.zip

[xtting]

why not you use the PWM module to do this.

As I know the timer is not a hard ware timer, it use RTC to mock up a serial timer, which mean it need CPU resoure underlying. If you add any other code using CPU too, the timer is not accurat at all, or not accurate enough for PWM.

[chenyu]

I know what you mean, But the pulse wave I want is a kind of unique pulse ,not PWM.