Custom Pin Configuration Using LPC55S69-EVK

tkukowski — Mon, 04 Nov 2024 22:10:39 GMT

I'm working with a LPC55S69-EVK to integrate a number of custom sensors utilizing various communication protocols. I'll be writing custom software that references the generated code from Pins and Peripherals. In other words, I won't be using LPC examples or their configurations.

Looking at the LPC55S69-EVK Board Schematic, the pinouts from P16-P19 look promising. However, I'm struggling to identify the actual routing of each pin on the board. It's possible for me to go through and run a continuity check on every pin and map it out myself, but also thought that a document or something similar has to exist that shows the pin-level routing for custom applications.

For example, P17 pin 1 is mapped to FC4_I2C_SCL_ARD. Referencing the images below, does that map to pin 88 or pin 30 in the MCUXpresso Pins Tool? I have a similar question for a lot of the pins that are shown in the schematic and having some kind of document to reference would drastically reduce the work of checking continuity of every LPC pin.

Re: Custom Pin Configuration Using LPC55S69-EVK

xiangjun_rong — Tue, 05 Nov 2024 01:50:59 GMT

Hi,

For the LPC55S69-EVK pin name, as you know that the Port pin is unique and map to only one pin. For example, for the pin 1 of P17, it is FC4_I2C_SCL_ARD, you can search on the schematics with pdf format,

By searching the key word "FC4_I2C_SCL_ARD", you can see that the the node corresponds PIO1_20 or pin 4 of LPC5569.

You can configure the PIO1_20 as FC4_I2C_SCLK, it is okay.

From hardware register configuration, each GPIO pin corresponds to a IOCON register, you can set up the FUNC bit to determine the pin function.

There is not doc which describes the map between the signal name and pin map for the EVK board.

Hope it can help you

XiangJun Rong

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Custom Pin Configuration Using LPC55S69-EVK

Re: Custom Pin Configuration Using LPC55S69-EVK