forked
Diff: targets/TARGET_Maxim/TARGET_MAX32610/gpio_api.c
- Revision:
- 149:156823d33999
- Parent:
- 144:ef7eb2e8f9f7
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/TARGET_Maxim/TARGET_MAX32610/gpio_api.c Fri Oct 28 11:17:30 2016 +0100 @@ -0,0 +1,94 @@ +/******************************************************************************* + * Copyright (C) 2015 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. + ******************************************************************************* + */ + +#include "mbed_assert.h" +#include "gpio_api.h" +#include "pinmap.h" +#include "gpio_regs.h" +#include "clkman_regs.h" + +uint32_t gpio_set(PinName name) +{ + MBED_ASSERT(name != (PinName)NC); + pin_function(name, 0); + return 1 << PINNAME_TO_PIN(name); +} + +void gpio_init(gpio_t *obj, PinName name) +{ + obj->name = name; + if (name == (PinName)NC) { + return; + } + + unsigned int port = PINNAME_TO_PORT(name); + unsigned int pin = PINNAME_TO_PIN(name); + + obj->reg_out = (uint32_t*)BITBAND(&MXC_GPIO->out_val[port], pin); + obj->reg_in = (uint32_t*)BITBAND(&MXC_GPIO->in_val[port], pin); + + /* Ensure that the GPIO clock is enabled */ + if (MXC_CLKMAN->clk_ctrl_1_gpio == MXC_E_CLKMAN_CLK_SCALE_DISABLED) { + MXC_CLKMAN->clk_ctrl_1_gpio = MXC_E_CLKMAN_CLK_SCALE_ENABLED; + } +} + +void gpio_mode(gpio_t *obj, PinMode mode) +{ + pin_mode(obj->name, mode); +} + +void pin_dir(PinName name, PinDirection direction) +{ + MBED_ASSERT(name != (PinName)NC); + + unsigned int port = PINNAME_TO_PORT(name); + unsigned int pin = PINNAME_TO_PIN(name); + + /* Set function */ + MXC_GPIO->func_sel[port] &= ~(0xF << (4 * pin)); + + /* Normal input is always enabled */ + MXC_GPIO->in_mode[port] &= ~(0xF << (4 * pin)); + + /* Set requested output mode */ + uint32_t out_mode = MXC_GPIO->out_mode[port]; + out_mode &= ~(0xF << (4 * pin)); + out_mode |= (direction << (4 * pin)); + MXC_GPIO->out_mode[port] = out_mode; +} + +void gpio_dir(gpio_t *obj, PinDirection direction) +{ + pin_dir(obj->name, direction); +}