mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

targets/TARGET_GigaDevice/TARGET_GD32F4XX/pinmap.c@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 189:f392fc9709a3 1 /* mbed Microcontroller Library
AnnaBridge 189:f392fc9709a3 2 * Copyright (c) 2018 GigaDevice Semiconductor Inc.
AnnaBridge 189:f392fc9709a3 3 *
AnnaBridge 189:f392fc9709a3 4 * SPDX-License-Identifier: Apache-2.0
AnnaBridge 189:f392fc9709a3 5 *
AnnaBridge 189:f392fc9709a3 6 * Licensed under the Apache License, Version 2.0 (the "License");
AnnaBridge 189:f392fc9709a3 7 * you may not use this file except in compliance with the License.
AnnaBridge 189:f392fc9709a3 8 * You may obtain a copy of the License at
AnnaBridge 189:f392fc9709a3 9 *
AnnaBridge 189:f392fc9709a3 10 * http://www.apache.org/licenses/LICENSE-2.0
AnnaBridge 189:f392fc9709a3 11 *
AnnaBridge 189:f392fc9709a3 12 * Unless required by applicable law or agreed to in writing, software
AnnaBridge 189:f392fc9709a3 13 * distributed under the License is distributed on an "AS IS" BASIS,
AnnaBridge 189:f392fc9709a3 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
AnnaBridge 189:f392fc9709a3 15 * See the License for the specific language governing permissions and
AnnaBridge 189:f392fc9709a3 16 * limitations under the License.
AnnaBridge 189:f392fc9709a3 17 */
AnnaBridge 189:f392fc9709a3 18 #include "mbed_assert.h"
AnnaBridge 189:f392fc9709a3 19 #include "pinmap.h"
AnnaBridge 189:f392fc9709a3 20 #include "PortNames.h"
AnnaBridge 189:f392fc9709a3 21 #include "mbed_error.h"
AnnaBridge 189:f392fc9709a3 22
AnnaBridge 189:f392fc9709a3 23 extern uint32_t gpio_clock_enable(uint32_t port_idx);
AnnaBridge 189:f392fc9709a3 24
AnnaBridge 189:f392fc9709a3 25 extern const int GD_GPIO_MODE[];
AnnaBridge 189:f392fc9709a3 26 extern const int GD_GPIO_PULL_UP_DOWN[];
AnnaBridge 189:f392fc9709a3 27 extern const int GD_GPIO_OUTPUT_MODE[];
AnnaBridge 189:f392fc9709a3 28 extern const int GD_GPIO_SPEED[];
AnnaBridge 189:f392fc9709a3 29 extern const int GD_GPIO_AF[];
AnnaBridge 189:f392fc9709a3 30
AnnaBridge 189:f392fc9709a3 31 /** Configure pin (mode, speed, reamp function )
AnnaBridge 189:f392fc9709a3 32 *
AnnaBridge 189:f392fc9709a3 33 * @param pin gpio pin name
AnnaBridge 189:f392fc9709a3 34 * @param function gpio pin mode, speed, remap function
AnnaBridge 189:f392fc9709a3 35 */
AnnaBridge 189:f392fc9709a3 36 void pin_function(PinName pin, int function)
AnnaBridge 189:f392fc9709a3 37 {
AnnaBridge 189:f392fc9709a3 38 MBED_ASSERT(pin != (PinName)NC);
AnnaBridge 189:f392fc9709a3 39
AnnaBridge 189:f392fc9709a3 40 uint32_t mode = GD_PIN_MODE_GET(function);
AnnaBridge 189:f392fc9709a3 41 uint32_t output = GD_PIN_OUTPUT_MODE_GET(function) ;
AnnaBridge 189:f392fc9709a3 42 uint32_t pull = GD_PIN_PULL_STATE_GET(function);
AnnaBridge 189:f392fc9709a3 43 uint32_t speed = GD_PIN_SPEED_GET(function);
AnnaBridge 189:f392fc9709a3 44 uint32_t af = GD_PIN_REMAP_GET(function);
AnnaBridge 189:f392fc9709a3 45
AnnaBridge 189:f392fc9709a3 46 uint32_t port = GD_PORT_GET(pin);
AnnaBridge 189:f392fc9709a3 47 uint32_t gd_pin = 1 << GD_PIN_GET(pin);
AnnaBridge 189:f392fc9709a3 48
AnnaBridge 189:f392fc9709a3 49 uint32_t gpio = gpio_clock_enable(port);
AnnaBridge 189:f392fc9709a3 50 gpio_af_set(gpio, GD_GPIO_AF[af], gd_pin);
AnnaBridge 189:f392fc9709a3 51 gpio_mode_set(gpio, GD_GPIO_MODE[mode], GD_GPIO_PULL_UP_DOWN[pull], gd_pin);
AnnaBridge 189:f392fc9709a3 52 gpio_output_options_set(gpio, GD_GPIO_OUTPUT_MODE[output], GD_GPIO_SPEED[speed], gd_pin);
AnnaBridge 189:f392fc9709a3 53 }
AnnaBridge 189:f392fc9709a3 54
AnnaBridge 189:f392fc9709a3 55 /** Only configure pin mode
AnnaBridge 189:f392fc9709a3 56 *
AnnaBridge 189:f392fc9709a3 57 * @param pin gpio pin name
AnnaBridge 189:f392fc9709a3 58 * @param function gpio pin mode
AnnaBridge 189:f392fc9709a3 59 */
AnnaBridge 189:f392fc9709a3 60 void pin_mode(PinName pin, PinMode mode)
AnnaBridge 189:f392fc9709a3 61 {
AnnaBridge 189:f392fc9709a3 62 MBED_ASSERT(pin != (PinName)NC);
AnnaBridge 189:f392fc9709a3 63 uint32_t port = GD_PORT_GET(pin);
AnnaBridge 189:f392fc9709a3 64 uint32_t gd_pin = 1 << GD_PIN_GET(pin);
AnnaBridge 189:f392fc9709a3 65
AnnaBridge 189:f392fc9709a3 66 uint32_t gpio = gpio_clock_enable(port);
AnnaBridge 189:f392fc9709a3 67 /* get pin mode */
AnnaBridge 189:f392fc9709a3 68 uint32_t pin_mode = (GPIO_CTL(gpio) >> (gd_pin * 2)) & 0x03;
AnnaBridge 189:f392fc9709a3 69 if ((pin_mode == PIN_MODE_OUTPUT) || (pin_mode == PIN_MODE_ANALOG)) {
AnnaBridge 189:f392fc9709a3 70 if ((mode == OpenDrainNoPull) || (mode == OpenDrainPullUp) || (mode == OpenDrainPullDown)) {
AnnaBridge 189:f392fc9709a3 71 /* set pin open drain mode */
AnnaBridge 189:f392fc9709a3 72 GPIO_OMODE(gpio) |= (uint32_t)gd_pin;
AnnaBridge 189:f392fc9709a3 73 } else {
AnnaBridge 189:f392fc9709a3 74 /* set pin push pull mode */
AnnaBridge 189:f392fc9709a3 75 GPIO_OMODE(gpio) &= (uint32_t)(~gd_pin);
AnnaBridge 189:f392fc9709a3 76 }
AnnaBridge 189:f392fc9709a3 77 }
AnnaBridge 189:f392fc9709a3 78
AnnaBridge 189:f392fc9709a3 79 if ((mode == OpenDrainPullUp) || (mode == PullUp)) {
AnnaBridge 189:f392fc9709a3 80 /* clear the specified pin pupd bits */
AnnaBridge 189:f392fc9709a3 81 GPIO_PUD(gpio) &= ~GPIO_PUPD_MASK(gd_pin);
AnnaBridge 189:f392fc9709a3 82 /* set the specified pin pull up */
AnnaBridge 189:f392fc9709a3 83 GPIO_PUD(gpio) |= GPIO_PUPD_SET(gd_pin, GPIO_PUPD_PULLUP);
AnnaBridge 189:f392fc9709a3 84 } else if ((mode == OpenDrainPullDown) || (mode == PullDown)) {
AnnaBridge 189:f392fc9709a3 85 /* clear the specified pin pupd bits */
AnnaBridge 189:f392fc9709a3 86 GPIO_PUD(gpio) &= ~GPIO_PUPD_MASK(gd_pin);
AnnaBridge 189:f392fc9709a3 87 /* set the specified pin pull down */
AnnaBridge 189:f392fc9709a3 88 GPIO_PUD(gpio) |= GPIO_PUPD_SET(gd_pin, GPIO_PUPD_PULLDOWN);
AnnaBridge 189:f392fc9709a3 89 } else {
AnnaBridge 189:f392fc9709a3 90 /* clear the specified pin pupd bits */
AnnaBridge 189:f392fc9709a3 91 GPIO_PUD(gpio) &= ~GPIO_PUPD_MASK(gd_pin);
AnnaBridge 189:f392fc9709a3 92 /* set the specified pin pull none */
AnnaBridge 189:f392fc9709a3 93 GPIO_PUD(gpio) |= GPIO_PUPD_SET(gd_pin, GPIO_PUPD_NONE);
AnnaBridge 189:f392fc9709a3 94 }
AnnaBridge 189:f392fc9709a3 95 }