marcus chiou / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_Maxim/TARGET_MAX32600/gpio_api.c@600:7d17ca308cd1, 2015-07-31 (annotated)

Committer:
mbed_official
Date:
Fri Jul 31 14:15:09 2015 +0100
Revision:
600:7d17ca308cd1
Parent:
514:7668256dbe61 
Synchronized with git revision e4cd8bbd3e05b68e5a7f466c74035a85743d45e0



Full URL: https://github.com/mbedmicro/mbed/commit/e4cd8bbd3e05b68e5a7f466c74035a85743d45e0/



Enable LPC8xx usart when configuring it

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 514:7668256dbe61 1 /*******************************************************************************
mbed_official 514:7668256dbe61 2 * Copyright (C) 2015 Maxim Integrated Products, Inc., All Rights Reserved.
mbed_official 514:7668256dbe61 3 *
mbed_official 514:7668256dbe61 4 * Permission is hereby granted, free of charge, to any person obtaining a
mbed_official 514:7668256dbe61 5 * copy of this software and associated documentation files (the "Software"),
mbed_official 514:7668256dbe61 6 * to deal in the Software without restriction, including without limitation
mbed_official 514:7668256dbe61 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
mbed_official 514:7668256dbe61 8 * and/or sell copies of the Software, and to permit persons to whom the
mbed_official 514:7668256dbe61 9 * Software is furnished to do so, subject to the following conditions:
mbed_official 514:7668256dbe61 10 *
mbed_official 514:7668256dbe61 11 * The above copyright notice and this permission notice shall be included
mbed_official 514:7668256dbe61 12 * in all copies or substantial portions of the Software.
mbed_official 514:7668256dbe61 13 *
mbed_official 514:7668256dbe61 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
mbed_official 514:7668256dbe61 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
mbed_official 514:7668256dbe61 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
mbed_official 514:7668256dbe61 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
mbed_official 514:7668256dbe61 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
mbed_official 514:7668256dbe61 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
mbed_official 514:7668256dbe61 20 * OTHER DEALINGS IN THE SOFTWARE.
mbed_official 514:7668256dbe61 21 *
mbed_official 514:7668256dbe61 22 * Except as contained in this notice, the name of Maxim Integrated
mbed_official 514:7668256dbe61 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
mbed_official 514:7668256dbe61 24 * Products, Inc. Branding Policy.
mbed_official 514:7668256dbe61 25 *
mbed_official 514:7668256dbe61 26 * The mere transfer of this software does not imply any licenses
mbed_official 514:7668256dbe61 27 * of trade secrets, proprietary technology, copyrights, patents,
mbed_official 514:7668256dbe61 28 * trademarks, maskwork rights, or any other form of intellectual
mbed_official 514:7668256dbe61 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
mbed_official 514:7668256dbe61 30 * ownership rights.
mbed_official 514:7668256dbe61 31 *******************************************************************************
mbed_official 514:7668256dbe61 32 */
mbed_official 514:7668256dbe61 33
mbed_official 514:7668256dbe61 34 #include "mbed_assert.h"
mbed_official 514:7668256dbe61 35 #include "gpio_api.h"
mbed_official 514:7668256dbe61 36 #include "pinmap.h"
mbed_official 514:7668256dbe61 37 #include "gpio_regs.h"
mbed_official 514:7668256dbe61 38 #include "clkman_regs.h"
mbed_official 514:7668256dbe61 39
mbed_official 514:7668256dbe61 40 uint32_t gpio_set(PinName name)
mbed_official 514:7668256dbe61 41 {
mbed_official 514:7668256dbe61 42 MBED_ASSERT(name != (PinName)NC);
mbed_official 514:7668256dbe61 43 pin_function(name, 0);
mbed_official 514:7668256dbe61 44 return 1 << PINNAME_TO_PIN(name);
mbed_official 514:7668256dbe61 45 }
mbed_official 514:7668256dbe61 46
mbed_official 514:7668256dbe61 47 void gpio_init(gpio_t *obj, PinName name)
mbed_official 514:7668256dbe61 48 {
mbed_official 514:7668256dbe61 49 obj->name = name;
mbed_official 514:7668256dbe61 50 if (name == (PinName)NC) {
mbed_official 514:7668256dbe61 51 return;
mbed_official 514:7668256dbe61 52 }
mbed_official 514:7668256dbe61 53
mbed_official 514:7668256dbe61 54 unsigned int port = PINNAME_TO_PORT(name);
mbed_official 514:7668256dbe61 55 unsigned int pin = PINNAME_TO_PIN(name);
mbed_official 514:7668256dbe61 56
mbed_official 514:7668256dbe61 57 obj->reg_out = (uint32_t*)BITBAND(&MXC_GPIO->out_val[port], pin);
mbed_official 514:7668256dbe61 58 obj->reg_in = (uint32_t*)BITBAND(&MXC_GPIO->in_val[port], pin);
mbed_official 514:7668256dbe61 59
mbed_official 514:7668256dbe61 60 /* Ensure that the GPIO clock is enabled */
mbed_official 514:7668256dbe61 61 if (MXC_CLKMAN->clk_ctrl_1_gpio == MXC_E_CLKMAN_CLK_SCALE_DISABLED) {
mbed_official 514:7668256dbe61 62 MXC_CLKMAN->clk_ctrl_1_gpio = MXC_E_CLKMAN_CLK_SCALE_ENABLED;
mbed_official 514:7668256dbe61 63 }
mbed_official 514:7668256dbe61 64 }
mbed_official 514:7668256dbe61 65
mbed_official 514:7668256dbe61 66 void gpio_mode(gpio_t *obj, PinMode mode)
mbed_official 514:7668256dbe61 67 {
mbed_official 514:7668256dbe61 68 pin_mode(obj->name, mode);
mbed_official 514:7668256dbe61 69 }
mbed_official 514:7668256dbe61 70
mbed_official 514:7668256dbe61 71 void pin_dir(PinName name, PinDirection direction)
mbed_official 514:7668256dbe61 72 {
mbed_official 514:7668256dbe61 73 MBED_ASSERT(name != (PinName)NC);
mbed_official 514:7668256dbe61 74
mbed_official 514:7668256dbe61 75 unsigned int port = PINNAME_TO_PORT(name);
mbed_official 514:7668256dbe61 76 unsigned int pin = PINNAME_TO_PIN(name);
mbed_official 514:7668256dbe61 77
mbed_official 514:7668256dbe61 78 /* Set function */
mbed_official 514:7668256dbe61 79 MXC_GPIO->func_sel[port] &= ~(0xF << (4 * pin));
mbed_official 514:7668256dbe61 80
mbed_official 514:7668256dbe61 81 /* Normal input is always enabled */
mbed_official 514:7668256dbe61 82 MXC_GPIO->in_mode[port] &= ~(0xF << (4 * pin));
mbed_official 514:7668256dbe61 83
mbed_official 514:7668256dbe61 84 /* Set requested output mode */
mbed_official 514:7668256dbe61 85 uint32_t out_mode = MXC_GPIO->out_mode[port];
mbed_official 514:7668256dbe61 86 out_mode &= ~(0xF << (4 * pin));
mbed_official 514:7668256dbe61 87 out_mode |= (direction << (4 * pin));
mbed_official 514:7668256dbe61 88 MXC_GPIO->out_mode[port] = out_mode;
mbed_official 514:7668256dbe61 89 }
mbed_official 514:7668256dbe61 90
mbed_official 514:7668256dbe61 91 void gpio_dir(gpio_t *obj, PinDirection direction)
mbed_official 514:7668256dbe61 92 {
mbed_official 514:7668256dbe61 93 pin_dir(obj->name, direction);
mbed_official 514:7668256dbe61 94 }