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_KLXX/port_api.c@0:9b334a45a8ff, 2015-10-01 (annotated)

Committer:
bogdanm
Date:
Thu Oct 01 15:25:22 2015 +0300
Revision:
0:9b334a45a8ff
Child:
144:ef7eb2e8f9f7
Initial commit on mbed-dev



Replaces mbed-src (now inactive)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /* mbed Microcontroller Library
bogdanm 0:9b334a45a8ff 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 0:9b334a45a8ff 3 *
bogdanm 0:9b334a45a8ff 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 0:9b334a45a8ff 5 * you may not use this file except in compliance with the License.
bogdanm 0:9b334a45a8ff 6 * You may obtain a copy of the License at
bogdanm 0:9b334a45a8ff 7 *
bogdanm 0:9b334a45a8ff 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 0:9b334a45a8ff 9 *
bogdanm 0:9b334a45a8ff 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 0:9b334a45a8ff 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 0:9b334a45a8ff 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 0:9b334a45a8ff 13 * See the License for the specific language governing permissions and
bogdanm 0:9b334a45a8ff 14 * limitations under the License.
bogdanm 0:9b334a45a8ff 15 */
bogdanm 0:9b334a45a8ff 16 #include "port_api.h"
bogdanm 0:9b334a45a8ff 17 #include "pinmap.h"
bogdanm 0:9b334a45a8ff 18 #include "gpio_api.h"
bogdanm 0:9b334a45a8ff 19
bogdanm 0:9b334a45a8ff 20 PinName port_pin(PortName port, int pin_n) {
bogdanm 0:9b334a45a8ff 21 return (PinName)((port << PORT_SHIFT) | (pin_n << 2));
bogdanm 0:9b334a45a8ff 22 }
bogdanm 0:9b334a45a8ff 23
bogdanm 0:9b334a45a8ff 24 void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
bogdanm 0:9b334a45a8ff 25 obj->port = port;
bogdanm 0:9b334a45a8ff 26 obj->mask = mask;
bogdanm 0:9b334a45a8ff 27 #if defined(TARGET_KL43Z)
bogdanm 0:9b334a45a8ff 28 GPIO_Type *reg = (GPIO_Type *)(GPIOA_BASE + port * 0x40);
bogdanm 0:9b334a45a8ff 29 #else
bogdanm 0:9b334a45a8ff 30 FGPIO_Type *reg = (FGPIO_Type *)(FPTA_BASE + port * 0x40);
bogdanm 0:9b334a45a8ff 31 #endif
bogdanm 0:9b334a45a8ff 32 obj->reg_out = &reg->PDOR;
bogdanm 0:9b334a45a8ff 33 obj->reg_in = &reg->PDIR;
bogdanm 0:9b334a45a8ff 34 obj->reg_dir = &reg->PDDR;
bogdanm 0:9b334a45a8ff 35
bogdanm 0:9b334a45a8ff 36 uint32_t i;
bogdanm 0:9b334a45a8ff 37 // The function is set per pin: reuse gpio logic
bogdanm 0:9b334a45a8ff 38 for (i=0; i<32; i++) {
bogdanm 0:9b334a45a8ff 39 if (obj->mask & (1<<i)) {
bogdanm 0:9b334a45a8ff 40 gpio_set(port_pin(obj->port, i));
bogdanm 0:9b334a45a8ff 41 }
bogdanm 0:9b334a45a8ff 42 }
bogdanm 0:9b334a45a8ff 43
bogdanm 0:9b334a45a8ff 44 port_dir(obj, dir);
bogdanm 0:9b334a45a8ff 45 }
bogdanm 0:9b334a45a8ff 46
bogdanm 0:9b334a45a8ff 47 void port_mode(port_t *obj, PinMode mode) {
bogdanm 0:9b334a45a8ff 48 uint32_t i;
bogdanm 0:9b334a45a8ff 49 // The mode is set per pin: reuse pinmap logic
bogdanm 0:9b334a45a8ff 50 for (i=0; i<32; i++) {
bogdanm 0:9b334a45a8ff 51 if (obj->mask & (1<<i)) {
bogdanm 0:9b334a45a8ff 52 pin_mode(port_pin(obj->port, i), mode);
bogdanm 0:9b334a45a8ff 53 }
bogdanm 0:9b334a45a8ff 54 }
bogdanm 0:9b334a45a8ff 55 }
bogdanm 0:9b334a45a8ff 56
bogdanm 0:9b334a45a8ff 57 void port_dir(port_t *obj, PinDirection dir) {
bogdanm 0:9b334a45a8ff 58 switch (dir) {
bogdanm 0:9b334a45a8ff 59 case PIN_INPUT : *obj->reg_dir &= ~obj->mask; break;
bogdanm 0:9b334a45a8ff 60 case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break;
bogdanm 0:9b334a45a8ff 61 }
bogdanm 0:9b334a45a8ff 62 }
bogdanm 0:9b334a45a8ff 63
bogdanm 0:9b334a45a8ff 64 void port_write(port_t *obj, int value) {
bogdanm 0:9b334a45a8ff 65 *obj->reg_out = (*obj->reg_in & ~obj->mask) | (value & obj->mask);
bogdanm 0:9b334a45a8ff 66 }
bogdanm 0:9b334a45a8ff 67
bogdanm 0:9b334a45a8ff 68 int port_read(port_t *obj) {
bogdanm 0:9b334a45a8ff 69 return (*obj->reg_in & obj->mask);
bogdanm 0:9b334a45a8ff 70 }