313 lines
9.3 KiB
C
313 lines
9.3 KiB
C
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/* *****************************************************************************
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* Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
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* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name of Maxim Integrated
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* Products, Inc. shall not be used except as stated in the Maxim Integrated
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* Products, Inc. Branding Policy.
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*
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* The mere transfer of this software does not imply any licenses
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* of trade secrets, proprietary technology, copyrights, patents,
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* trademarks, maskwork rights, or any other form of intellectual
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* property whatsoever. Maxim Integrated Products, Inc. retains all
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* ownership rights.
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*
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* $Date: 2018-12-18 15:37:22 -0600 (Tue, 18 Dec 2018) $
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* $Revision: 40072 $
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*
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**************************************************************************** */
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/* **** Includes **** */
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#include "mxc_config.h"
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#include "mxc_assert.h"
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#include "gpio.h"
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#include <stddef.h>
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/* **** Definitions **** */
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/* **** Globals **** */
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static void (*callback[MXC_CFG_GPIO_INSTANCES][MXC_CFG_GPIO_PINS_PORT])(void *);
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static void *cbparam[MXC_CFG_GPIO_INSTANCES][MXC_CFG_GPIO_PINS_PORT];
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/* **** Functions **** */
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int GPIO_Init(void)
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{
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int i;
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int j;
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// Initialize call back arrays
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for(i = 0; i < MXC_CFG_GPIO_INSTANCES; i++) {
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for(j = 0; j < MXC_CFG_GPIO_PINS_PORT; j++) {
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callback[i][j] = NULL;
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}
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}
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return E_NO_ERROR;
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}
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/* ************************************************************************** */
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/*
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* GPIO_EN2 | GPIO_EN1 | GPIO_EN | Function
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* --------------|---------------------|---------------------|----------------------
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* 0 | 0 | 0 | Alternative 1
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* 0 | 1 | 0 | Alternative 2
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* 1 | 0 | 0 | Alternative 3
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* 1 | 1 | 0 | Alternative 4
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* 0 | 0 | 1 | GPIO (default)
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*/
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int GPIO_Config(const gpio_cfg_t *cfg)
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{
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mxc_gpio_regs_t *gpio = MXC_GPIO_GET_GPIO(cfg->port);
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// Set the GPIO type
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switch (cfg->func) {
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case GPIO_FUNC_IN:
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gpio->out_en_clr = cfg->mask;
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gpio->en_set = cfg->mask;
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gpio->en1_clr = cfg->mask;
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gpio->en2_clr = cfg->mask;
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break;
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case GPIO_FUNC_OUT:
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gpio->out_en_set = cfg->mask;
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gpio->en_set = cfg->mask;
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gpio->en1_clr = cfg->mask;
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gpio->en2_clr = cfg->mask;
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break;
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case GPIO_FUNC_ALT1:
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gpio->en_clr = cfg->mask;
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gpio->en1_clr = cfg->mask;
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gpio->en2_clr = cfg->mask;
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break;
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case GPIO_FUNC_ALT2:
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gpio->en_clr = cfg->mask;
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gpio->en1_set = cfg->mask;
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gpio->en2_clr = cfg->mask;
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break;
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case GPIO_FUNC_ALT3:
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#if TARGET==32660
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gpio->en_set = cfg->mask;
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gpio->en1_set = cfg->mask;
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#else
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gpio->en_clr = cfg->mask;
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gpio->en1_clr = cfg->mask;
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gpio->en2_set = cfg->mask;
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#endif
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break;
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case GPIO_FUNC_ALT4:
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gpio->en_clr = cfg->mask;
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gpio->en1_set = cfg->mask;
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gpio->en2_set = cfg->mask;
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break;
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default:
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return E_BAD_PARAM;
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}
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// Configure the pad
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switch (cfg->pad) {
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case GPIO_PAD_NONE:
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gpio->pad_cfg1 &= ~cfg->mask;
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gpio->pad_cfg2 &= ~cfg->mask;
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#if TARGET==32660
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gpio->ps &= ~cfg->mask;
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#endif
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break;
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case GPIO_PAD_PULL_UP:
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gpio->pad_cfg1 |= cfg->mask;
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gpio->pad_cfg2 &= ~cfg->mask;
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#if TARGET==32660
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gpio->ps |= cfg->mask;
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#endif
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break;
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case GPIO_PAD_PULL_DOWN:
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gpio->pad_cfg1 &= ~cfg->mask;
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gpio->pad_cfg2 |= cfg->mask;
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#if TARGET==32660
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gpio->ps &= ~cfg->mask;
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#endif
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break;
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default:
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return E_BAD_PARAM;
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}
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return E_NO_ERROR;
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}
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/* ************************************************************************** */
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uint32_t GPIO_InGet(const gpio_cfg_t *cfg)
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{
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mxc_gpio_regs_t *gpio = MXC_GPIO_GET_GPIO(cfg->port);
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return (gpio->in & cfg->mask);
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}
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/* ************************************************************************** */
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void GPIO_OutSet(const gpio_cfg_t *cfg)
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{
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mxc_gpio_regs_t *gpio = MXC_GPIO_GET_GPIO(cfg->port);
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gpio->out_set = cfg->mask;
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}
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/* ************************************************************************** */
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void GPIO_OutClr(const gpio_cfg_t *cfg)
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{
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mxc_gpio_regs_t *gpio = MXC_GPIO_GET_GPIO(cfg->port);
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gpio->out_clr = cfg->mask;
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}
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/* ************************************************************************** */
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uint32_t GPIO_OutGet(const gpio_cfg_t *cfg)
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{
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mxc_gpio_regs_t *gpio = MXC_GPIO_GET_GPIO(cfg->port);
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return (gpio->out & cfg->mask);
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}
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/* ************************************************************************** */
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void GPIO_OutPut(const gpio_cfg_t *cfg, uint32_t val)
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{
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mxc_gpio_regs_t *gpio = MXC_GPIO_GET_GPIO(cfg->port);
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gpio->out = (gpio->out & ~cfg->mask) | (val & cfg->mask);
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}
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/* ************************************************************************** */
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void GPIO_OutToggle(const gpio_cfg_t *cfg)
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{
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mxc_gpio_regs_t *gpio = MXC_GPIO_GET_GPIO(cfg->port);
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gpio->out ^= cfg->mask;
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}
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/* ************************************************************************** */
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int GPIO_IntConfig(const gpio_cfg_t *cfg, gpio_int_mode_t mode, gpio_int_pol_t pol)
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{
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mxc_gpio_regs_t *gpio = MXC_GPIO_GET_GPIO(cfg->port);
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switch (mode) {
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case GPIO_INT_LEVEL:
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gpio->int_mod &= ~cfg->mask;
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break;
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case GPIO_INT_EDGE:
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gpio->int_mod |= cfg->mask;
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break;
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default:
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return E_BAD_PARAM;
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}
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switch (pol) {
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case GPIO_INT_FALLING: /* GPIO_INT_HIGH */
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gpio->int_pol &= ~cfg->mask;
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gpio->int_dual_edge &= ~cfg->mask;
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break;
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case GPIO_INT_RISING: /* GPIO_INT_LOW */
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gpio->int_pol |= cfg->mask;
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gpio->int_dual_edge &= ~cfg->mask;
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break;
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case GPIO_INT_BOTH:
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gpio->int_dual_edge |= cfg->mask;
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break;
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default:
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return E_BAD_PARAM;
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}
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return E_NO_ERROR;
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}
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/* ************************************************************************** */
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void GPIO_IntEnable(const gpio_cfg_t *cfg)
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{
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mxc_gpio_regs_t *gpio = MXC_GPIO_GET_GPIO(cfg->port);
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gpio->int_en_set = cfg->mask;
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}
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/* ************************************************************************** */
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void GPIO_IntDisable(const gpio_cfg_t *cfg)
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{
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mxc_gpio_regs_t *gpio = MXC_GPIO_GET_GPIO(cfg->port);
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gpio->int_en_clr = cfg->mask;
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}
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/* ************************************************************************** */
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uint32_t GPIO_IntStatus(const gpio_cfg_t *cfg)
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{
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mxc_gpio_regs_t *gpio = MXC_GPIO_GET_GPIO(cfg->port);
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return (gpio->int_stat & cfg->mask);
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}
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/* ************************************************************************** */
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void GPIO_IntClr(const gpio_cfg_t *cfg)
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{
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mxc_gpio_regs_t *gpio = MXC_GPIO_GET_GPIO(cfg->port);
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gpio->int_clr = cfg->mask;
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}
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/* ************************************************************************** */
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void GPIO_RegisterCallback(const gpio_cfg_t *cfg, gpio_callback_fn func, void *cbdata)
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{
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uint32_t mask;
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unsigned int pin;
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mask = cfg->mask;
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pin = 0;
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while (mask) {
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if (mask & 1) {
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callback[cfg->port][pin] = func;
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cbparam[cfg->port][pin] = cbdata;
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}
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pin++;
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mask >>= 1;
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}
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}
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/* ************************************************************************** */
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void GPIO_Handler(unsigned int port)
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{
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uint32_t stat;
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unsigned int pin;
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MXC_ASSERT(port < MXC_CFG_GPIO_INSTANCES);
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mxc_gpio_regs_t *gpio = MXC_GPIO_GET_GPIO(port);
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stat = gpio->int_stat;
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gpio->int_clr = stat;
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pin = 0;
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while (stat) {
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if (stat & 1) {
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if(callback[port][pin]) {
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callback[port][pin](cbparam[port][pin]);
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}
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}
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pin++;
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stat >>= 1;
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}
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}
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