add the wiringPi wrapper functions for FreeBSD..

wiringPi.c

@@ -0,0 +1,102 @@
+/*-
+ * Copyright 2020 John-Mark Gurney.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+#include <sys/types.h>
+#include <libgpio.h>
+#include <time.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#include <wiringPi.h>
+
+long
+micros(void)
+{
+	int64_t i;
+	struct timespec ts;
+
+	clock_gettime(CLOCK_MONOTONIC_PRECISE, &ts);
+
+	i = ts.tv_sec * 1000000000 + ts.tv_nsec;
+	i /= 1000;
+
+	return i;
+}
+
+static int opened;
+static gpio_handle_t gpiohndl;
+
+int
+wiringPiSetup(void)
+{
+
+	if (opened)
+		return 1;
+
+	gpiohndl = gpio_open(0);
+	opened = 1;
+
+	return 1;
+}
+
+void
+pinMode(int pinnum, enum wp_dir direction)
+{
+
+	if (direction == INPUT)
+		gpio_pin_input(gpiohndl, pinnum);
+	else if (direction == OUTPUT)
+		gpio_pin_output(gpiohndl, pinnum);
+}
+
+enum wp_value
+digitalRead(int pinnum)
+{
+	gpio_value_t v;
+
+	v = gpio_pin_get(gpiohndl, pinnum);
+	if (v == GPIO_VALUE_LOW)
+		return LOW;
+	else if (v == GPIO_VALUE_HIGH)
+		return HIGH;
+	else
+		abort();
+}
+
+void
+digitalWrite(int pinnum, enum wp_value value)
+{
+	gpio_value_t v;
+
+	if (value == LOW)
+		v = GPIO_VALUE_LOW;
+	else if (value == HIGH)
+		v = GPIO_VALUE_HIGH;
+	else
+		abort();
+
+	gpio_pin_set(gpiohndl, pinnum, v);
+}

wiringPi.h

@@ -0,0 +1,44 @@
+/*-
+ * Copyright 2020 John-Mark Gurney.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+enum wp_dir {
+	INPUT,
+	OUTPUT,
+};
+
+enum wp_value {
+	LOW,
+	HIGH,
+};
+
+/* Likely just compat*/
+long micros(void);
+
+int wiringPiSetup(void);
+
+void pinMode(int pinnum, enum wp_dir direction);
+enum wp_value digitalRead(int pinnum);
+void digitalWrite(int pinnum, enum wp_value value);