caravel/verilog/dv/caravel/mgmt_soc/gpio_mgmt/gpio_mgmt.c

/*
 * SPDX-FileCopyrightText: 2020 Efabless Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * SPDX-License-Identifier: Apache-2.0
 */

#include "../../defs.h"

// --------------------------------------------------------

/*
 *	Management SoC GPIO Pin Test
 *		Tests writing to the GPIO pin.
 */

void main()
{
	int i;

	reg_gpio_data = 0;
	reg_gpio_ena = 0;
	reg_gpio_pu = 0;
	reg_gpio_pd = 0;

	for (i = 0; i < 10; i++) {
		/* Fast blink for simulation */
		reg_gpio_data = 1;
		reg_gpio_data = 0;
	}

	while (1) {
		/* Slow blink for demonstration board */
		for (i = 0; i < 30000; i++) {
			reg_gpio_data = 1;
		}
		for (i = 0; i < 30000; i++) {
			reg_gpio_data = 0;
		}
	}
}