Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

targets/hal/TARGET_Maxim/TARGET_MAX32600/gpio_api.c@0:9b334a45a8ff, 2015-10-01 (annotated)

Committer:
bogdanm
Date:
Thu Oct 01 15:25:22 2015 +0300
Revision:
0:9b334a45a8ff
Child:
144:ef7eb2e8f9f7
Initial commit on mbed-dev



Replaces mbed-src (now inactive)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /*******************************************************************************
bogdanm 0:9b334a45a8ff 2 * Copyright (C) 2015 Maxim Integrated Products, Inc., All Rights Reserved.
bogdanm 0:9b334a45a8ff 3 *
bogdanm 0:9b334a45a8ff 4 * Permission is hereby granted, free of charge, to any person obtaining a
bogdanm 0:9b334a45a8ff 5 * copy of this software and associated documentation files (the "Software"),
bogdanm 0:9b334a45a8ff 6 * to deal in the Software without restriction, including without limitation
bogdanm 0:9b334a45a8ff 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
bogdanm 0:9b334a45a8ff 8 * and/or sell copies of the Software, and to permit persons to whom the
bogdanm 0:9b334a45a8ff 9 * Software is furnished to do so, subject to the following conditions:
bogdanm 0:9b334a45a8ff 10 *
bogdanm 0:9b334a45a8ff 11 * The above copyright notice and this permission notice shall be included
bogdanm 0:9b334a45a8ff 12 * in all copies or substantial portions of the Software.
bogdanm 0:9b334a45a8ff 13 *
bogdanm 0:9b334a45a8ff 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
bogdanm 0:9b334a45a8ff 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
bogdanm 0:9b334a45a8ff 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
bogdanm 0:9b334a45a8ff 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
bogdanm 0:9b334a45a8ff 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
bogdanm 0:9b334a45a8ff 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
bogdanm 0:9b334a45a8ff 20 * OTHER DEALINGS IN THE SOFTWARE.
bogdanm 0:9b334a45a8ff 21 *
bogdanm 0:9b334a45a8ff 22 * Except as contained in this notice, the name of Maxim Integrated
bogdanm 0:9b334a45a8ff 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
bogdanm 0:9b334a45a8ff 24 * Products, Inc. Branding Policy.
bogdanm 0:9b334a45a8ff 25 *
bogdanm 0:9b334a45a8ff 26 * The mere transfer of this software does not imply any licenses
bogdanm 0:9b334a45a8ff 27 * of trade secrets, proprietary technology, copyrights, patents,
bogdanm 0:9b334a45a8ff 28 * trademarks, maskwork rights, or any other form of intellectual
bogdanm 0:9b334a45a8ff 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
bogdanm 0:9b334a45a8ff 30 * ownership rights.
bogdanm 0:9b334a45a8ff 31 *******************************************************************************
bogdanm 0:9b334a45a8ff 32 */
bogdanm 0:9b334a45a8ff 33
bogdanm 0:9b334a45a8ff 34 #include "mbed_assert.h"
bogdanm 0:9b334a45a8ff 35 #include "gpio_api.h"
bogdanm 0:9b334a45a8ff 36 #include "pinmap.h"
bogdanm 0:9b334a45a8ff 37 #include "gpio_regs.h"
bogdanm 0:9b334a45a8ff 38 #include "clkman_regs.h"
bogdanm 0:9b334a45a8ff 39
bogdanm 0:9b334a45a8ff 40 uint32_t gpio_set(PinName name)
bogdanm 0:9b334a45a8ff 41 {
bogdanm 0:9b334a45a8ff 42 MBED_ASSERT(name != (PinName)NC);
bogdanm 0:9b334a45a8ff 43 pin_function(name, 0);
bogdanm 0:9b334a45a8ff 44 return 1 << PINNAME_TO_PIN(name);
bogdanm 0:9b334a45a8ff 45 }
bogdanm 0:9b334a45a8ff 46
bogdanm 0:9b334a45a8ff 47 void gpio_init(gpio_t *obj, PinName name)
bogdanm 0:9b334a45a8ff 48 {
bogdanm 0:9b334a45a8ff 49 obj->name = name;
bogdanm 0:9b334a45a8ff 50 if (name == (PinName)NC) {
bogdanm 0:9b334a45a8ff 51 return;
bogdanm 0:9b334a45a8ff 52 }
bogdanm 0:9b334a45a8ff 53
bogdanm 0:9b334a45a8ff 54 unsigned int port = PINNAME_TO_PORT(name);
bogdanm 0:9b334a45a8ff 55 unsigned int pin = PINNAME_TO_PIN(name);
bogdanm 0:9b334a45a8ff 56
bogdanm 0:9b334a45a8ff 57 obj->reg_out = (uint32_t*)BITBAND(&MXC_GPIO->out_val[port], pin);
bogdanm 0:9b334a45a8ff 58 obj->reg_in = (uint32_t*)BITBAND(&MXC_GPIO->in_val[port], pin);
bogdanm 0:9b334a45a8ff 59
bogdanm 0:9b334a45a8ff 60 /* Ensure that the GPIO clock is enabled */
bogdanm 0:9b334a45a8ff 61 if (MXC_CLKMAN->clk_ctrl_1_gpio == MXC_E_CLKMAN_CLK_SCALE_DISABLED) {
bogdanm 0:9b334a45a8ff 62 MXC_CLKMAN->clk_ctrl_1_gpio = MXC_E_CLKMAN_CLK_SCALE_ENABLED;
bogdanm 0:9b334a45a8ff 63 }
bogdanm 0:9b334a45a8ff 64 }
bogdanm 0:9b334a45a8ff 65
bogdanm 0:9b334a45a8ff 66 void gpio_mode(gpio_t *obj, PinMode mode)
bogdanm 0:9b334a45a8ff 67 {
bogdanm 0:9b334a45a8ff 68 pin_mode(obj->name, mode);
bogdanm 0:9b334a45a8ff 69 }
bogdanm 0:9b334a45a8ff 70
bogdanm 0:9b334a45a8ff 71 void pin_dir(PinName name, PinDirection direction)
bogdanm 0:9b334a45a8ff 72 {
bogdanm 0:9b334a45a8ff 73 MBED_ASSERT(name != (PinName)NC);
bogdanm 0:9b334a45a8ff 74
bogdanm 0:9b334a45a8ff 75 unsigned int port = PINNAME_TO_PORT(name);
bogdanm 0:9b334a45a8ff 76 unsigned int pin = PINNAME_TO_PIN(name);
bogdanm 0:9b334a45a8ff 77
bogdanm 0:9b334a45a8ff 78 /* Set function */
bogdanm 0:9b334a45a8ff 79 MXC_GPIO->func_sel[port] &= ~(0xF << (4 * pin));
bogdanm 0:9b334a45a8ff 80
bogdanm 0:9b334a45a8ff 81 /* Normal input is always enabled */
bogdanm 0:9b334a45a8ff 82 MXC_GPIO->in_mode[port] &= ~(0xF << (4 * pin));
bogdanm 0:9b334a45a8ff 83
bogdanm 0:9b334a45a8ff 84 /* Set requested output mode */
bogdanm 0:9b334a45a8ff 85 uint32_t out_mode = MXC_GPIO->out_mode[port];
bogdanm 0:9b334a45a8ff 86 out_mode &= ~(0xF << (4 * pin));
bogdanm 0:9b334a45a8ff 87 out_mode |= (direction << (4 * pin));
bogdanm 0:9b334a45a8ff 88 MXC_GPIO->out_mode[port] = out_mode;
bogdanm 0:9b334a45a8ff 89 }
bogdanm 0:9b334a45a8ff 90
bogdanm 0:9b334a45a8ff 91 void gpio_dir(gpio_t *obj, PinDirection direction)
bogdanm 0:9b334a45a8ff 92 {
bogdanm 0:9b334a45a8ff 93 pin_dir(obj->name, direction);
bogdanm 0:9b334a45a8ff 94 }