tests/driver_ir_nec: add test application for ir_nec driver

tests/driver_ir_nec/Makefile

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+include ../Makefile.tests_common
+
+# required modules
+USEMODULE += ir_nec
+
+# Setup pin for ir-receiver
+# Any interrupt capable GPIO pin should work fine
+ifneq (,$(filter b-l475e-iot01a,$(BOARD)))
+	# This is the pin marked D7 on b-l475e-iot01a
+	IR_PIN ?= GPIO_PIN(PORT_A,4)
+endif
+
+# fallback: set some default for compile test
+IR_PIN ?= GPIO_PIN(0,0)
+
+CFLAGS += -D'IR_NEC_PARAM_PIN=$(IR_PIN)'
+
+include $(RIOTBASE)/Makefile.include

tests/driver_ir_nec/README.md

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+driver_ir_nec
+=============
+
+This is a manual test application for the ir_nec driver.
+
+Usage
+=====
+
+The application continuously reads packets from the IR remote and prints them.
+It should print one line for every keypress.

tests/driver_ir_nec/main.c

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+/*
+ * Copyright (C) 2022 Dario Petrillo
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     tests
+ * @{
+ *
+ * @file
+ * @brief       Test application for the ir_nec driver
+ *
+ * @author      Dario Petrillo <dario.pk1@gmail.com>
+ *
+ * @}
+ */
+
+#include <stdio.h>
+#include "ir_nec.h"
+#include "ir_nec_params.h"
+
+ir_nec_t remote;
+ir_nec_cmd_t cmd;
+
+int main(void)
+{
+    ir_nec_init(&remote, &ir_nec_params[0]);
+
+    for (;;) {
+        if (ir_nec_read(&remote, &cmd)) {
+            puts("Error reading packet");
+            return -1;
+        }
+        printf("Received packet with addr = 0x%X, cmd = 0x%X\n", cmd.addr, cmd.cmd);
+    }
+}