mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

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

targets/TARGET_Freescale/TARGET_K20XX/port_api.c@160:d5399cc887bb, 2017-03-14 (annotated)

Committer:
<>
Date:
Tue Mar 14 16:40:56 2017 +0000
Revision:
160:d5399cc887bb
Parent:
149:156823d33999 
This updates the lib to the mbed lib v138

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /* mbed Microcontroller Library
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2006-2015 ARM Limited
<> 144:ef7eb2e8f9f7 3 *
<> 144:ef7eb2e8f9f7 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 144:ef7eb2e8f9f7 5 * you may not use this file except in compliance with the License.
<> 144:ef7eb2e8f9f7 6 * You may obtain a copy of the License at
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 144:ef7eb2e8f9f7 9 *
<> 144:ef7eb2e8f9f7 10 * Unless required by applicable law or agreed to in writing, software
<> 144:ef7eb2e8f9f7 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 144:ef7eb2e8f9f7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 144:ef7eb2e8f9f7 13 * See the License for the specific language governing permissions and
<> 144:ef7eb2e8f9f7 14 * limitations under the License.
<> 144:ef7eb2e8f9f7 15 */
<> 144:ef7eb2e8f9f7 16 #include "port_api.h"
<> 144:ef7eb2e8f9f7 17 #include "pinmap.h"
<> 144:ef7eb2e8f9f7 18 #include "gpio_api.h"
<> 144:ef7eb2e8f9f7 19
<> 144:ef7eb2e8f9f7 20 PinName port_pin(PortName port, int pin_n) {
<> 144:ef7eb2e8f9f7 21 return (PinName)((port << PORT_SHIFT) | (pin_n << 2));
<> 144:ef7eb2e8f9f7 22 }
<> 144:ef7eb2e8f9f7 23
<> 144:ef7eb2e8f9f7 24 void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
<> 144:ef7eb2e8f9f7 25 obj->port = port;
<> 144:ef7eb2e8f9f7 26 obj->mask = mask;
<> 144:ef7eb2e8f9f7 27
<> 144:ef7eb2e8f9f7 28 GPIO_Type *reg = (GPIO_Type *)(PTA_BASE + port * 0x40);
<> 144:ef7eb2e8f9f7 29
<> 144:ef7eb2e8f9f7 30 obj->reg_out = &reg->PDOR;
<> 144:ef7eb2e8f9f7 31 obj->reg_in = &reg->PDIR;
<> 144:ef7eb2e8f9f7 32 obj->reg_dir = &reg->PDDR;
<> 144:ef7eb2e8f9f7 33
<> 144:ef7eb2e8f9f7 34 uint32_t i;
<> 144:ef7eb2e8f9f7 35 // The function is set per pin: reuse gpio logic
<> 144:ef7eb2e8f9f7 36 for (i=0; i<32; i++) {
<> 144:ef7eb2e8f9f7 37 if (obj->mask & (1<<i)) {
<> 144:ef7eb2e8f9f7 38 gpio_set(port_pin(obj->port, i));
<> 144:ef7eb2e8f9f7 39 }
<> 144:ef7eb2e8f9f7 40 }
<> 144:ef7eb2e8f9f7 41
<> 144:ef7eb2e8f9f7 42 port_dir(obj, dir);
<> 144:ef7eb2e8f9f7 43 }
<> 144:ef7eb2e8f9f7 44
<> 144:ef7eb2e8f9f7 45 void port_mode(port_t *obj, PinMode mode) {
<> 144:ef7eb2e8f9f7 46 uint32_t i;
<> 144:ef7eb2e8f9f7 47 // The mode is set per pin: reuse pinmap logic
<> 144:ef7eb2e8f9f7 48 for (i=0; i<32; i++) {
<> 144:ef7eb2e8f9f7 49 if (obj->mask & (1<<i)) {
<> 144:ef7eb2e8f9f7 50 pin_mode(port_pin(obj->port, i), mode);
<> 144:ef7eb2e8f9f7 51 }
<> 144:ef7eb2e8f9f7 52 }
<> 144:ef7eb2e8f9f7 53 }
<> 144:ef7eb2e8f9f7 54
<> 144:ef7eb2e8f9f7 55 void port_dir(port_t *obj, PinDirection dir) {
<> 144:ef7eb2e8f9f7 56 switch (dir) {
<> 144:ef7eb2e8f9f7 57 case PIN_INPUT :
<> 144:ef7eb2e8f9f7 58 *obj->reg_dir &= ~obj->mask;
<> 144:ef7eb2e8f9f7 59 break;
<> 144:ef7eb2e8f9f7 60 case PIN_OUTPUT:
<> 144:ef7eb2e8f9f7 61 *obj->reg_dir |= obj->mask;
<> 144:ef7eb2e8f9f7 62 break;
<> 144:ef7eb2e8f9f7 63 }
<> 144:ef7eb2e8f9f7 64 }
<> 144:ef7eb2e8f9f7 65
<> 144:ef7eb2e8f9f7 66 void port_write(port_t *obj, int value) {
<> 144:ef7eb2e8f9f7 67 *obj->reg_out = (*obj->reg_in & ~obj->mask) | (value & obj->mask);
<> 144:ef7eb2e8f9f7 68 }
<> 144:ef7eb2e8f9f7 69
<> 144:ef7eb2e8f9f7 70 int port_read(port_t *obj) {
<> 144:ef7eb2e8f9f7 71 return (*obj->reg_in & obj->mask);
<> 144:ef7eb2e8f9f7 72 }