Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

targets/hal/TARGET_Freescale/TARGET_KSDK2_MCUS/api/port_api.c@121:7f86b4238bec, 2016-05-03 (annotated)

Committer:
mbed_official
Date:
Tue May 03 00:15:16 2016 +0100
Revision:
121:7f86b4238bec
Synchronized with git revision 9cef243de23875778f461bbe9a8c1bc47e65212b



Full URL: https://github.com/mbedmicro/mbed/commit/9cef243de23875778f461bbe9a8c1bc47e65212b/



Switch to KSDK 2.0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 121:7f86b4238bec 1 /* mbed Microcontroller Library
mbed_official 121:7f86b4238bec 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 121:7f86b4238bec 3 *
mbed_official 121:7f86b4238bec 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 121:7f86b4238bec 5 * you may not use this file except in compliance with the License.
mbed_official 121:7f86b4238bec 6 * You may obtain a copy of the License at
mbed_official 121:7f86b4238bec 7 *
mbed_official 121:7f86b4238bec 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 121:7f86b4238bec 9 *
mbed_official 121:7f86b4238bec 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 121:7f86b4238bec 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 121:7f86b4238bec 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 121:7f86b4238bec 13 * See the License for the specific language governing permissions and
mbed_official 121:7f86b4238bec 14 * limitations under the License.
mbed_official 121:7f86b4238bec 15 */
mbed_official 121:7f86b4238bec 16 #include "port_api.h"
mbed_official 121:7f86b4238bec 17
mbed_official 121:7f86b4238bec 18 #if DEVICE_PORTIN || DEVICE_PORTOUT
mbed_official 121:7f86b4238bec 19
mbed_official 121:7f86b4238bec 20 #include "pinmap.h"
mbed_official 121:7f86b4238bec 21 #include "gpio_api.h"
mbed_official 121:7f86b4238bec 22
mbed_official 121:7f86b4238bec 23 /* Array of GPIO peripheral base address. */
mbed_official 121:7f86b4238bec 24 static GPIO_Type *const port_addrs[] = GPIO_BASE_PTRS;
mbed_official 121:7f86b4238bec 25
mbed_official 121:7f86b4238bec 26 PinName port_pin(PortName port, int pin_n) {
mbed_official 121:7f86b4238bec 27 return (PinName)((port << GPIO_PORT_SHIFT) | pin_n);
mbed_official 121:7f86b4238bec 28 }
mbed_official 121:7f86b4238bec 29
mbed_official 121:7f86b4238bec 30 void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
mbed_official 121:7f86b4238bec 31 obj->port = port;
mbed_official 121:7f86b4238bec 32 obj->mask = mask;
mbed_official 121:7f86b4238bec 33
mbed_official 121:7f86b4238bec 34 // The function is set per pin: reuse gpio logic
mbed_official 121:7f86b4238bec 35 for (uint32_t i = 0; i < 32; i++) {
mbed_official 121:7f86b4238bec 36 if (obj->mask & (1 << i)) {
mbed_official 121:7f86b4238bec 37 gpio_set(port_pin(obj->port, i));
mbed_official 121:7f86b4238bec 38 }
mbed_official 121:7f86b4238bec 39 }
mbed_official 121:7f86b4238bec 40
mbed_official 121:7f86b4238bec 41 port_dir(obj, dir);
mbed_official 121:7f86b4238bec 42 }
mbed_official 121:7f86b4238bec 43
mbed_official 121:7f86b4238bec 44 void port_mode(port_t *obj, PinMode mode) {
mbed_official 121:7f86b4238bec 45
mbed_official 121:7f86b4238bec 46 // The mode is set per pin: reuse pinmap logic
mbed_official 121:7f86b4238bec 47 for (uint32_t i = 0; i < 32; i++) {
mbed_official 121:7f86b4238bec 48 if (obj->mask & (1 << i)) {
mbed_official 121:7f86b4238bec 49 pin_mode(port_pin(obj->port, i), mode);
mbed_official 121:7f86b4238bec 50 }
mbed_official 121:7f86b4238bec 51 }
mbed_official 121:7f86b4238bec 52 }
mbed_official 121:7f86b4238bec 53
mbed_official 121:7f86b4238bec 54 void port_dir(port_t *obj, PinDirection dir) {
mbed_official 121:7f86b4238bec 55 GPIO_Type *base = port_addrs[obj->port];
mbed_official 121:7f86b4238bec 56 uint32_t direction = base->PDDR;
mbed_official 121:7f86b4238bec 57
mbed_official 121:7f86b4238bec 58 switch (dir) {
mbed_official 121:7f86b4238bec 59 case PIN_INPUT :
mbed_official 121:7f86b4238bec 60 direction &= ~obj->mask;
mbed_official 121:7f86b4238bec 61 break;
mbed_official 121:7f86b4238bec 62 case PIN_OUTPUT:
mbed_official 121:7f86b4238bec 63 direction |= obj->mask;
mbed_official 121:7f86b4238bec 64 break;
mbed_official 121:7f86b4238bec 65 }
mbed_official 121:7f86b4238bec 66 base->PDDR = direction;
mbed_official 121:7f86b4238bec 67 }
mbed_official 121:7f86b4238bec 68
mbed_official 121:7f86b4238bec 69 void port_write(port_t *obj, int value) {
mbed_official 121:7f86b4238bec 70 GPIO_Type *base = port_addrs[obj->port];
mbed_official 121:7f86b4238bec 71 uint32_t input = base->PDIR & ~obj->mask;
mbed_official 121:7f86b4238bec 72
mbed_official 121:7f86b4238bec 73 base->PDOR = (input | (uint32_t)(value & obj->mask));
mbed_official 121:7f86b4238bec 74 }
mbed_official 121:7f86b4238bec 75
mbed_official 121:7f86b4238bec 76 int port_read(port_t *obj) {
mbed_official 121:7f86b4238bec 77 GPIO_Type *base = port_addrs[obj->port];
mbed_official 121:7f86b4238bec 78
mbed_official 121:7f86b4238bec 79 return (int)(base->PDIR & obj->mask);
mbed_official 121:7f86b4238bec 80 }
mbed_official 121:7f86b4238bec 81
mbed_official 121:7f86b4238bec 82 #endif