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