319 lines
6.9 KiB
C++
319 lines
6.9 KiB
C++
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/*
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* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
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*
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* This file is part of PortaPack.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GPIO_H__
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#define __GPIO_H__
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#include <cstdint>
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#include "ch.h"
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#include "hal.h"
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struct PinConfig {
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const uint32_t mode;
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const uint32_t pd;
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const uint32_t pu;
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const uint32_t fast;
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const uint32_t input;
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const uint32_t ifilt;
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constexpr operator uint16_t() const {
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return
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(((~ifilt) & 1) << 7)
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| ((input & 1) << 6)
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| ((fast & 1) << 5)
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| (((~pu) & 1) << 4)
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| ((pd & 1) << 3)
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| ((mode & 7) << 0);
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}
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/*
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constexpr operator uint32_t() {
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return scu::sfs::mode::value(mode)
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<< scu::sfs::epd::value(pd)
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<< scu::sfs::epun::value(~pu)
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<< scu::sfs::ehs::value(fast)
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<< scu::sfs::ezi::value(input)
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<< scu::sfs::zif::value(~ifilt)
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;
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}
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*/
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static constexpr PinConfig reset() {
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return { .mode = 0, .pd = 0, .pu = 1, .fast = 0, .input = 0, .ifilt = 1 };
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}
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static constexpr PinConfig floating(
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const uint32_t mode
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) {
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return {
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.mode = mode,
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.pd = 0,
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.pu = 0,
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.fast = 0,
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.input = 0,
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.ifilt = 1
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};
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}
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static constexpr PinConfig floating_input(
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const uint32_t mode
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) {
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return {
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.mode = mode,
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.pd = 0,
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.pu = 0,
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.fast = 0,
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.input = 1,
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.ifilt = 1
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};
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}
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static constexpr PinConfig floating_input_with_pull(
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const uint32_t pull_direction,
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const uint32_t mode
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) {
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return {
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.mode = mode,
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.pd = (pull_direction == 0) ? 1U : 0U,
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.pu = (pull_direction == 1) ? 1U : 0U,
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.fast = 0,
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.input = 1,
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.ifilt = 1
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};
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}
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static constexpr PinConfig gpio_led(const uint32_t mode) {
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return { .mode = mode, .pd = 0, .pu = 0, .fast = 0, .input = 0, .ifilt = 1 };
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}
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static constexpr PinConfig gpio_inout_with_pull(
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const uint32_t mode,
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const uint32_t pull_direction
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) {
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return {
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.mode = mode,
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.pd = (pull_direction == 0) ? 1U : 0U,
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.pu = (pull_direction == 1) ? 1U : 0U,
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.fast = 0,
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.input = 1,
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.ifilt = 1
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};
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}
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static constexpr PinConfig gpio_inout_with_pullup(const uint32_t mode) {
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return gpio_inout_with_pull(mode, 1);
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}
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static constexpr PinConfig gpio_inout_with_pulldown(const uint32_t mode) {
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return gpio_inout_with_pull(mode, 0);
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}
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static constexpr PinConfig gpio_out_with_pull(
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const uint32_t mode,
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const uint32_t pull_direction
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) {
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return {
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.mode = mode,
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.pd = (pull_direction == 0) ? 1U : 0U,
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.pu = (pull_direction == 1) ? 1U : 0U,
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.fast = 0,
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.input = 0,
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.ifilt = 1
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};
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}
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static constexpr PinConfig gpio_out_with_pulldown(const uint32_t mode) {
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return gpio_out_with_pull(mode, 0);
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}
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static constexpr PinConfig gpio_out_with_pullup(const uint32_t mode) {
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return gpio_out_with_pull(mode, 1);
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}
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static constexpr PinConfig sgpio_in_fast(const uint32_t mode) {
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return { .mode = mode, .pd = 0, .pu = 0, .fast = 0, .input = 1, .ifilt = 0 };
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}
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static constexpr PinConfig sgpio_out_fast_with_pull(
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const uint32_t mode,
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const uint32_t pull_direction
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) {
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return {
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.mode = mode,
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.pd = (pull_direction == 0) ? 1U : 0U,
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.pu = (pull_direction == 1) ? 1U : 0U,
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.fast = 1,
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.input = 0,
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.ifilt = 1
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};
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}
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static constexpr PinConfig sgpio_out_fast_with_pullup(const uint32_t mode) {
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return sgpio_out_fast_with_pull(mode, 1);
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}
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static constexpr PinConfig sgpio_inout_fast(const uint32_t mode) {
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return { .mode = mode, .pd = 0, .pu = 0, .fast = 1, .input = 1, .ifilt = 0 };
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}
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static constexpr PinConfig i2c(const uint32_t mode) {
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return { .mode = mode, .pd = 0, .pu = 0, .fast = 0, .input = 1, .ifilt = 1 };
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}
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static constexpr PinConfig spifi_sck(const uint32_t mode ) {
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return { .mode = mode, .pd = 0, .pu = 0, .fast = 1, .input = 1, .ifilt = 0 };
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}
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static constexpr PinConfig spifi_inout(const uint32_t mode) {
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return { .mode = mode, .pd = 0, .pu = 0, .fast = 1, .input = 1, .ifilt = 0 };
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}
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static constexpr PinConfig spifi_cs(const uint32_t mode) {
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return { .mode = mode, .pd = 0, .pu = 0, .fast = 1, .input = 1, .ifilt = 0 };
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}
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};
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struct Pin {
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// Pin() = delete;
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// Pin(const Pin&) = delete;
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// Pin(Pin&&) = delete;
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constexpr Pin(
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const uint8_t port,
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const uint8_t pad,
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const PinConfig initial_config
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) : _pin_port { port },
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_pin_pad { pad },
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_initial_config { initial_config }
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{
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}
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/*
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constexpr Pin(
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const Pin& pin
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) : _pin_port { pin._pin_port },
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_pin_pad { pin._pin_pad },
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_initial_config { pin._initial_config }
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{
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}
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*/
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void init() const {
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LPC_SCU->SFSP[_pin_port][_pin_pad] = _initial_config;
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}
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void mode(const uint_fast16_t mode) const {
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LPC_SCU->SFSP[_pin_port][_pin_pad] =
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(LPC_SCU->SFSP[_pin_port][_pin_pad] & 0xfffffff8) | mode;
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}
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void configure(const PinConfig config) const {
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LPC_SCU->SFSP[_pin_port][_pin_pad] = config;
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}
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uint8_t _pin_port;
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uint8_t _pin_pad;
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uint16_t _initial_config;
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};
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struct GPIO {
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// GPIO() = delete;
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// GPIO(const GPIO& gpio) = delete;
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// GPIO(GPIO&&) = delete;
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constexpr GPIO(
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const Pin& pin,
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const ioportid_t gpio_port,
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const iopadid_t gpio_pad,
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const uint16_t gpio_mode
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) : _pin { pin },
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_gpio_port { gpio_port },
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_gpio_pad { gpio_pad },
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_gpio_mode { gpio_mode }
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{
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}
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/*
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constexpr GPIO(
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const GPIO& gpio
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) : _pin { gpio._pin },
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_gpio_port { gpio._gpio_port },
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_gpio_pad { gpio._gpio_pad },
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_gpio_mode { gpio._gpio_mode }
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{
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}
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*/
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constexpr ioportid_t port() const {
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return _gpio_port;
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}
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constexpr iopadid_t pad() const {
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return _gpio_pad;
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}
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constexpr Pin pin() const {
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return _pin;
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}
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void configure() const {
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_pin.mode(_gpio_mode);
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}
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uint_fast16_t mode() const {
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return _gpio_mode;
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}
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void set() const {
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palSetPad(_gpio_port, _gpio_pad);
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}
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void clear() const {
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palClearPad(_gpio_port, _gpio_pad);
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}
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void toggle() const {
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palTogglePad(_gpio_port, _gpio_pad);
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}
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void output() const {
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palSetPadMode(_gpio_port, _gpio_pad, PAL_MODE_OUTPUT_PUSHPULL);
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}
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void input() const {
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palSetPadMode(_gpio_port, _gpio_pad, PAL_MODE_INPUT);
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}
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void write(const bool value) const {
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palWritePad(_gpio_port, _gpio_pad, value);
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}
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bool read() const {
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return palReadPad(_gpio_port, _gpio_pad);
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}
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bool operator!=(const GPIO& other) const {
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return (port() != other.port()) || (pad() != other.pad());
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}
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const Pin _pin;
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const ioportid_t _gpio_port;
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const iopadid_t _gpio_pad;
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const uint16_t _gpio_mode;
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};
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#endif/*__GPIO_H__*/
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