drivers/ir_nec: NEC remote receiver implementation

[dp1]

Contribution description

This PR adds support for decoding packets sent by infrared remotes using the NEC protocol. I tested this code with an HS0038B receiver, which outputs a demodulated and inverted signal (the inversion seems to be quite common, but I haven't done an extensive search on this).

Testing procedure

Board setup

Connect +3v3 and GND to the chip, and its output pin (which needs a capacitor and 1/2 resistors, see page 2 here ) to an interrupt-capable gpio input. I am using this module and a b-l475e-iot01a board

Code

The following receives and prints decoded packets

#include "ir_nec.h"

ir_nec_t remote;
ir_nec_cmd_t cmd;
ir_nec_params_t ir_params = {.pin = GPIO_PIN(PORT_A, 4)};

int main(void) {
    ir_nec_init(&remote, &ir_params);

    for(;;) {
        if(ir_nec_read(&remote, &cmd)) {
            puts("error");
            return -1;
        }
        printf("Packet addr=0x%X, cmd=0x%X\n", cmd.addr, cmd.cmd);
    }
}

Issues/PRs references

See #17906 for the initial issue on this feature

[kfessel]

please provide test/driver_ir_nec

[dp1]

Thank you for the feedback, I just added a few commits that should address all the issues you mentioned. Please let me know if there's anything more I should change

[kfessel]

I still would prefer this using ztimer.

other than that there are these nitpicks.
the PR tested succsessfully

[dp1]

It should be good now, I applied the changes you suggested and moved from xtimer to ztimer. I also tested again on the hardware to make sure that everything works and found no problems in doing so.

[kfessel]

looks good to go, please squash

[dp1]

I squashed the changes down to 3 commits, trying to keep different areas (drivers/ and tests/) in separate commits - do you want me to squash everything in a single one?

[kfessel]

lets wait for murdock

[kfessel]

sadly Murdock seems not to like specific defaults therefor: Use GPIO_PIN(0,0) for fallback

[kfessel]

it ok if you squash this change right into the: tests/driver_ir_nec: add test application for ir_nec driver commit

[dp1]

Thank you for the help! It should be good now, let's see what Murdock thinks of it

[kfessel]

one minor change
and
please move the documentation change in ir_nec_constants.h from the test commit to the driver commit

[kfessel]

works, reads well, tests well