Not able to modify PINENABLE0 register

[tomato]

Hi,

There should be an error or something that hinders the higlighted line of the code below

I am trying to use channel 0 of the on -board ADC of the LPC845brk but I cannot enable the ADC0 channel. Even if I try to change the value with the scroll-down menu near the ADC_0 label in the registers perspective (shown on the left side of the screenshot above) the value is automatically set to "Value_1"  .

Do you know how to solve this issue?

Thanks

[RaRo · Accepted solution]

Hello @tomato,

You need to enable the clock of SWM first, to make a change in PINENABLE0 register. After you finish the configuration of the SWM module, it is recommended to disable the clock.

[LPC84x User Manual. Chapter 10: LPC84x Switch Matrix (SWM)]

[System clock control 0 register SYSAHBCLKCTRL0]

Here is an example for the configuration:

Best regards, Raul.