LPC800 switch matrix

HeMyFAE — Fri, 20 Sep 2019 18:00:52 GMT

Is the LPC800’s switch matrix reconfigurable during run? Or is it just able to be configured at boot?

Regards,

Re: LPC800 switch matrix

soledad — Fri, 20 Sep 2019 18:17:52 GMT

Hi,

I found the following information in the user manual:

Pin function assignments can be changed “on-the-fly” from one peripheral to another while the part is running. To disconnect a peripheral from the pins and change the pin function assignment, follow these steps:

1. Enable the clock to the switch matrix.

2. Find the pin assign register for the current pin function. For example, register PINASSIGN0 for pin function U0_RXD. 3. Set the corresponding bits in the PINASSIGN register to their default value 0xFF.

4. Clear all pending interrupts for the disconnected peripheral and ensure that the peripheral is in a defined state.

5. In the pin assign register for the new pin function, program the pin number.

6. Disable the clock to the switch matrix.

Please let me know if this helps,

Have a nice day

Regards

Soledad

topic Re: LPC800 switch matrix in LPC Microcontrollers

LPC800 switch matrix

Re: LPC800 switch matrix