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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/hal/TARGET_Atmel/TARGET_SAM21/pinmap.c@592:a274ee790e56, 2015-07-17 (annotated)

Committer:
mbed_official
Date:
Fri Jul 17 09:15:10 2015 +0100
Revision:
592:a274ee790e56
Synchronized with git revision e7144f83a8d75df80c4877936b6ffe552b0be9e6



Full URL: https://github.com/mbedmicro/mbed/commit/e7144f83a8d75df80c4877936b6ffe552b0be9e6/



More API implementation for SAMR21

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 592:a274ee790e56 1 /* mbed Microcontroller Library
mbed_official 592:a274ee790e56 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 592:a274ee790e56 3 *
mbed_official 592:a274ee790e56 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 592:a274ee790e56 5 * you may not use this file except in compliance with the License.
mbed_official 592:a274ee790e56 6 * You may obtain a copy of the License at
mbed_official 592:a274ee790e56 7 *
mbed_official 592:a274ee790e56 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 592:a274ee790e56 9 *
mbed_official 592:a274ee790e56 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 592:a274ee790e56 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 592:a274ee790e56 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 592:a274ee790e56 13 * See the License for the specific language governing permissions and
mbed_official 592:a274ee790e56 14 * limitations under the License.
mbed_official 592:a274ee790e56 15 */
mbed_official 592:a274ee790e56 16 #include <stddef.h>
mbed_official 592:a274ee790e56 17 #include "us_ticker_api.h"
mbed_official 592:a274ee790e56 18 #include "cmsis.h"
mbed_official 592:a274ee790e56 19 #include "mbed_assert.h"
mbed_official 592:a274ee790e56 20 #include "ins_gclk.h"
mbed_official 592:a274ee790e56 21 #include "compiler.h"
mbed_official 592:a274ee790e56 22 #include "system.h"
mbed_official 592:a274ee790e56 23
mbed_official 592:a274ee790e56 24 #include "pinmux.h"
mbed_official 592:a274ee790e56 25 #include "pinmap.h"
mbed_official 592:a274ee790e56 26
mbed_official 592:a274ee790e56 27 extern uint8_t g_sys_init;
mbed_official 592:a274ee790e56 28
mbed_official 592:a274ee790e56 29
mbed_official 592:a274ee790e56 30 static inline void pinmux_get_current_config(PinName pin, struct system_pinmux_config *const config)
mbed_official 592:a274ee790e56 31 {
mbed_official 592:a274ee790e56 32 MBED_ASSERT(pin != (PinName)NC);
mbed_official 592:a274ee790e56 33 uint32_t pin_index = pin % 32;
mbed_official 592:a274ee790e56 34 uint32_t pin_mask = (uint32_t)(1UL << pin_index);
mbed_official 592:a274ee790e56 35
mbed_official 592:a274ee790e56 36 PortGroup *const port = system_pinmux_get_group_from_gpio_pin(pin);
mbed_official 592:a274ee790e56 37 MBED_ASSERT(port);
mbed_official 592:a274ee790e56 38
mbed_official 592:a274ee790e56 39 config->mux_position = system_pinmux_pin_get_mux_position(pin);
mbed_official 592:a274ee790e56 40
mbed_official 592:a274ee790e56 41 if (port->PINCFG[pin_index].reg & PORT_PINCFG_INEN) {
mbed_official 592:a274ee790e56 42 if (port->DIR.reg & pin_mask) {
mbed_official 592:a274ee790e56 43 config->direction = SYSTEM_PINMUX_PIN_DIR_OUTPUT_WITH_READBACK;
mbed_official 592:a274ee790e56 44 config->input_pull = SYSTEM_PINMUX_PIN_PULL_NONE;
mbed_official 592:a274ee790e56 45 } else {
mbed_official 592:a274ee790e56 46 config->direction = SYSTEM_PINMUX_PIN_DIR_INPUT;
mbed_official 592:a274ee790e56 47 if (port->PINCFG[pin_index].reg & PORT_PINCFG_PULLEN) {
mbed_official 592:a274ee790e56 48 if (port->OUT.reg & pin_mask) {
mbed_official 592:a274ee790e56 49 config->input_pull = SYSTEM_PINMUX_PIN_PULL_UP;
mbed_official 592:a274ee790e56 50 } else {
mbed_official 592:a274ee790e56 51 config->input_pull = SYSTEM_PINMUX_PIN_PULL_DOWN;
mbed_official 592:a274ee790e56 52 }
mbed_official 592:a274ee790e56 53 } else {
mbed_official 592:a274ee790e56 54 config->input_pull = SYSTEM_PINMUX_PIN_PULL_NONE;
mbed_official 592:a274ee790e56 55 }
mbed_official 592:a274ee790e56 56 }
mbed_official 592:a274ee790e56 57 } else {
mbed_official 592:a274ee790e56 58 config->input_pull = SYSTEM_PINMUX_PIN_PULL_NONE;
mbed_official 592:a274ee790e56 59 config->direction = SYSTEM_PINMUX_PIN_DIR_OUTPUT;
mbed_official 592:a274ee790e56 60 }
mbed_official 592:a274ee790e56 61
mbed_official 592:a274ee790e56 62 /* Not relevant for now */
mbed_official 592:a274ee790e56 63 config->powersave = false;
mbed_official 592:a274ee790e56 64 }
mbed_official 592:a274ee790e56 65
mbed_official 592:a274ee790e56 66 /** Change the MUX padding of input pin
mbed_official 592:a274ee790e56 67 *
mbed_official 592:a274ee790e56 68 * Configure the pin for specific module
mbed_official 592:a274ee790e56 69 * @param[in] pin Pin name whose MUX padding is to be changed
mbed_official 592:a274ee790e56 70 * @param[in] function The MUX mode to be selected
mbed_official 592:a274ee790e56 71 * @return void
mbed_official 592:a274ee790e56 72 */
mbed_official 592:a274ee790e56 73 void pin_function(PinName pin, int function)
mbed_official 592:a274ee790e56 74 {
mbed_official 592:a274ee790e56 75 MBED_ASSERT(pin != (PinName)NC);
mbed_official 592:a274ee790e56 76
mbed_official 592:a274ee790e56 77 struct system_pinmux_config pin_conf;
mbed_official 592:a274ee790e56 78
mbed_official 592:a274ee790e56 79 pinmux_get_current_config(pin, &pin_conf);
mbed_official 592:a274ee790e56 80 pin_conf.mux_position = function;
mbed_official 592:a274ee790e56 81
mbed_official 592:a274ee790e56 82 system_pinmux_pin_set_config(pin, &pin_conf);
mbed_official 592:a274ee790e56 83 }
mbed_official 592:a274ee790e56 84
mbed_official 592:a274ee790e56 85 /** Change the pin pull mode
mbed_official 592:a274ee790e56 86 *
mbed_official 592:a274ee790e56 87 * Configure the pin pull mode
mbed_official 592:a274ee790e56 88 * @param[in] pin Pin name whose MUX padding is to be changed
mbed_official 592:a274ee790e56 89 * @param[in] mode Pin pull mode to be set
mbed_official 592:a274ee790e56 90 * @return void
mbed_official 592:a274ee790e56 91 */
mbed_official 592:a274ee790e56 92 void pin_mode(PinName pin, PinMode mode)
mbed_official 592:a274ee790e56 93 {
mbed_official 592:a274ee790e56 94 MBED_ASSERT(pin != (PinName)NC);
mbed_official 592:a274ee790e56 95
mbed_official 592:a274ee790e56 96 struct system_pinmux_config pin_conf;
mbed_official 592:a274ee790e56 97
mbed_official 592:a274ee790e56 98 pinmux_get_current_config(pin, &pin_conf);
mbed_official 592:a274ee790e56 99 if (mode == PullUp) {
mbed_official 592:a274ee790e56 100 pin_conf.input_pull = SYSTEM_PINMUX_PIN_PULL_UP;
mbed_official 592:a274ee790e56 101 } else if (mode == PullDown) {
mbed_official 592:a274ee790e56 102 pin_conf.input_pull = SYSTEM_PINMUX_PIN_PULL_DOWN;
mbed_official 592:a274ee790e56 103 } else {
mbed_official 592:a274ee790e56 104 pin_conf.input_pull = SYSTEM_PINMUX_PIN_PULL_NONE;
mbed_official 592:a274ee790e56 105 }
mbed_official 592:a274ee790e56 106
mbed_official 592:a274ee790e56 107 system_pinmux_pin_set_config(pin, &pin_conf);
mbed_official 592:a274ee790e56 108 }