setting different voltage levels to gpio pin

[amarjeet]

Hi,

I am using sdk 14.2.0.

nrf_gpio_pin_set(OUTPUT_PIN); this function sets the gpio pin to vdd.

nrf_gpio_pin_clear(OUTPUT_PIN); this function set the gpio pin to ground.

my question is, how to set gpio pin to different voltage level, lets say 5v.

why i am asking this :

i am using vibration motor. so when i have to stop it, ineed to set pwm pin equal to voltage level.

so in case, i am using VDD, its fine.But, when i am using 5V, its not working because still there is a diffrence (5V - VDD). between VCC and pwm pin.

please guide me ,if we can do it using sdk.

thanks,

Amarjeet

[Håkon Alseth]

A GPIO configured as output high will follow the VDD_NRF.

You'll have to use a transistor as a switch to obtain what you want.

 

Best regards,

Håkon