mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

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

targets/TARGET_Silicon_Labs/TARGET_EFM32/port_api.c@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
Parent:
149:156823d33999 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /***************************************************************************//**
<> 144:ef7eb2e8f9f7 2 * @file port_api.c
<> 144:ef7eb2e8f9f7 3 *******************************************************************************
<> 144:ef7eb2e8f9f7 4 * @section License
<> 144:ef7eb2e8f9f7 5 * <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b>
<> 144:ef7eb2e8f9f7 6 *******************************************************************************
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * SPDX-License-Identifier: Apache-2.0
<> 144:ef7eb2e8f9f7 9 *
<> 144:ef7eb2e8f9f7 10 * Licensed under the Apache License, Version 2.0 (the "License"); you may
<> 144:ef7eb2e8f9f7 11 * not use this file except in compliance with the License.
<> 144:ef7eb2e8f9f7 12 * You may obtain a copy of the License at
<> 144:ef7eb2e8f9f7 13 *
<> 144:ef7eb2e8f9f7 14 * http://www.apache.org/licenses/LICENSE-2.0
<> 144:ef7eb2e8f9f7 15 *
<> 144:ef7eb2e8f9f7 16 * Unless required by applicable law or agreed to in writing, software
<> 144:ef7eb2e8f9f7 17 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
<> 144:ef7eb2e8f9f7 18 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 144:ef7eb2e8f9f7 19 * See the License for the specific language governing permissions and
<> 144:ef7eb2e8f9f7 20 * limitations under the License.
<> 144:ef7eb2e8f9f7 21 *
<> 144:ef7eb2e8f9f7 22 ******************************************************************************/
<> 144:ef7eb2e8f9f7 23
<> 144:ef7eb2e8f9f7 24 #include "device.h"
<> 144:ef7eb2e8f9f7 25 #if DEVICE_PORTOUT
<> 144:ef7eb2e8f9f7 26
<> 144:ef7eb2e8f9f7 27 #include "port_api.h"
<> 144:ef7eb2e8f9f7 28 #include "pinmap.h"
<> 144:ef7eb2e8f9f7 29 #include "gpio_api.h"
<> 144:ef7eb2e8f9f7 30 #include "em_gpio.h"
<> 144:ef7eb2e8f9f7 31 #include "em_cmu.h"
<> 144:ef7eb2e8f9f7 32
<> 144:ef7eb2e8f9f7 33 #define PORT_NUM_PINS 16
<> 144:ef7eb2e8f9f7 34
<> 144:ef7eb2e8f9f7 35 PinName port_pin(PortName port, int pin_n)
<> 144:ef7eb2e8f9f7 36 {
<> 144:ef7eb2e8f9f7 37 return (PinName) (pin_n | port << 4); // Encode pin and port number in one uint32
<> 144:ef7eb2e8f9f7 38 }
<> 144:ef7eb2e8f9f7 39
<> 144:ef7eb2e8f9f7 40 void port_init(port_t *obj, PortName port, int mask, PinDirection dir)
<> 144:ef7eb2e8f9f7 41 {
<> 144:ef7eb2e8f9f7 42 obj->mask = mask;
<> 144:ef7eb2e8f9f7 43 obj->port = port;
<> 144:ef7eb2e8f9f7 44 obj->dir = dir;
<> 144:ef7eb2e8f9f7 45
<> 144:ef7eb2e8f9f7 46 port_dir(obj, obj->dir);
<> 144:ef7eb2e8f9f7 47 }
<> 144:ef7eb2e8f9f7 48
<> 144:ef7eb2e8f9f7 49 void port_mode(port_t *obj, PinMode mode)
<> 144:ef7eb2e8f9f7 50 {
<> 144:ef7eb2e8f9f7 51 /* Set mode for pins given by mask */
<> 144:ef7eb2e8f9f7 52 uint32_t pin;
<> 144:ef7eb2e8f9f7 53 for (pin = 0; pin < PORT_NUM_PINS; pin++) {
<> 144:ef7eb2e8f9f7 54 if (obj->mask & (1 << pin)) {
<> 144:ef7eb2e8f9f7 55 pin_mode(port_pin(obj->port, pin), mode);
<> 144:ef7eb2e8f9f7 56 }
<> 144:ef7eb2e8f9f7 57 }
<> 144:ef7eb2e8f9f7 58 }
<> 144:ef7eb2e8f9f7 59
<> 144:ef7eb2e8f9f7 60 void port_dir(port_t *obj, PinDirection dir)
<> 144:ef7eb2e8f9f7 61 {
<> 144:ef7eb2e8f9f7 62 obj->dir = dir;
<> 144:ef7eb2e8f9f7 63
<> 144:ef7eb2e8f9f7 64 /* Set default pin mode for pins given by mask */
<> 144:ef7eb2e8f9f7 65 switch (dir) {
<> 144:ef7eb2e8f9f7 66 case PIN_INPUT:
<> 144:ef7eb2e8f9f7 67 port_mode(obj, Input);
<> 144:ef7eb2e8f9f7 68 break;
<> 144:ef7eb2e8f9f7 69 case PIN_OUTPUT:
<> 144:ef7eb2e8f9f7 70 port_mode(obj, PushPull);
<> 144:ef7eb2e8f9f7 71 break;
<> 144:ef7eb2e8f9f7 72 }
<> 144:ef7eb2e8f9f7 73 }
<> 144:ef7eb2e8f9f7 74
<> 144:ef7eb2e8f9f7 75 void port_write(port_t *obj, int value)
<> 144:ef7eb2e8f9f7 76 {
<> 144:ef7eb2e8f9f7 77 GPIO_PortOutSetVal(obj->port, value, obj->mask);
<> 144:ef7eb2e8f9f7 78 }
<> 144:ef7eb2e8f9f7 79
<> 144:ef7eb2e8f9f7 80 int port_read(port_t *obj)
<> 144:ef7eb2e8f9f7 81 {
<> 144:ef7eb2e8f9f7 82 if (obj->dir == PIN_INPUT) {
<> 144:ef7eb2e8f9f7 83 return (int) (GPIO_PortInGet(obj->port) & obj->mask);
<> 144:ef7eb2e8f9f7 84 } else {
<> 144:ef7eb2e8f9f7 85 return (int) (GPIO_PortOutGet(obj->port) & obj->mask);
<> 144:ef7eb2e8f9f7 86 }
<> 144:ef7eb2e8f9f7 87 }
<> 144:ef7eb2e8f9f7 88
<> 144:ef7eb2e8f9f7 89 #endif