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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?
User | Revision | Line number | New 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 | } |