added prescaler for 16 bit pwm in LPC1347 target
Fork of mbed-dev by
targets/hal/TARGET_Freescale/TARGET_KSDK2_MCUS/api/port_api.c
- Committer:
- JojoS
- Date:
- 2016-09-10
- Revision:
- 147:ba84b7dc41a7
- Parent:
- 121:7f86b4238bec
File content as of revision 147:ba84b7dc41a7:
/* mbed Microcontroller Library * Copyright (c) 2006-2013 ARM Limited * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include "port_api.h" #if DEVICE_PORTIN || DEVICE_PORTOUT #include "pinmap.h" #include "gpio_api.h" /* Array of GPIO peripheral base address. */ static GPIO_Type *const port_addrs[] = GPIO_BASE_PTRS; PinName port_pin(PortName port, int pin_n) { return (PinName)((port << GPIO_PORT_SHIFT) | pin_n); } void port_init(port_t *obj, PortName port, int mask, PinDirection dir) { obj->port = port; obj->mask = mask; // The function is set per pin: reuse gpio logic for (uint32_t i = 0; i < 32; i++) { if (obj->mask & (1 << i)) { gpio_set(port_pin(obj->port, i)); } } port_dir(obj, dir); } void port_mode(port_t *obj, PinMode mode) { // The mode is set per pin: reuse pinmap logic for (uint32_t i = 0; i < 32; i++) { if (obj->mask & (1 << i)) { pin_mode(port_pin(obj->port, i), mode); } } } void port_dir(port_t *obj, PinDirection dir) { GPIO_Type *base = port_addrs[obj->port]; uint32_t direction = base->PDDR; switch (dir) { case PIN_INPUT : direction &= ~obj->mask; break; case PIN_OUTPUT: direction |= obj->mask; break; } base->PDDR = direction; } void port_write(port_t *obj, int value) { GPIO_Type *base = port_addrs[obj->port]; uint32_t input = base->PDIR & ~obj->mask; base->PDOR = (input | (uint32_t)(value & obj->mask)); } int port_read(port_t *obj) { GPIO_Type *base = port_addrs[obj->port]; return (int)(base->PDIR & obj->mask); } #endif