about nRF52840's qspi frequency of clock

RE: about nRF52840's qspi frequency of clock

haakonsh — Mon, 20 Jul 2020 14:09:00 GMT

[quote user="visionwang"]I am sure the config is used;[/quote]

Show me.

RE: about nRF52840's qspi frequency of clock

visionwang — Mon, 20 Jul 2020 10:27:01 GMT

now clock wave is ok,but clock's frequency is still not changed by code; I am sure the config is used;

RE: about nRF52840's qspi frequency of clock

haakonsh — Mon, 20 Jul 2020 09:22:26 GMT

Something is terribly wrong. Your clock signal is heavily capacitively loaded, you need to investigate the source of this capacitance. The signal is also 37MHz instead of 32MHz so I don't really know what signal your actually measuring.

[quote user=""]#define NRFX_QSPI_CONFIG_FREQUENCY 15[/quote]

Is this config actually used by your code?