Pin_CNF Pullup value

[Philip Freidin]

In the nRF51 reference manual, page 59 shows the config value for pullup is 2 (upshift by 2)

In the file nrf51.bitfields.h, at line 2339, we have:

#define GPIO_PIN_CNF_PULL_Pullup (0x03UL) /*!< Pullup on pin. */

Which is correct?

In nrf51_sdk.chm the documentation for nrf_gpio_range_cfg_input() nrf_gpio_cfg_output () nrf_gpio_cfg_input () all refer to a "given initial value" but none of these have such a parameter.

[Håkon Alseth]

Hi Philip,

Good catch. Looking through the internal bug register, I found this has already been reported and the correct value is the one set in the nrf51_bitfields.h. This will be fixed in future versions of the RM.

BR Håkon

[Philip Freidin]

Thanks Håkon,

Any comment on the second part "given initial value" ?

While I am not complaining, I seem to be continuously finding little problems like this one and case 7200 , as well as $@#*! such as case 2347. I have more that I haven't reported yet, both in documentation and example sources.

Please advise your preferred way for me to report them: A) Open a case B) Post here in the developer zone C) Direct email D) Stop bugging us with this trivia.

Thanks again for great support, Philip

[Håkon Alseth]

Hi Philip,

I believe "given initial value" points to the hardcoding of some configuration, like SENSE for IN and drive strength for OUT.

We very much value feedback on what we deliver, so continue posting issues and bugs. You can post them here, or in the technical support portal.

Best regards Håkon