Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

targets/hal/TARGET_ARM_SSG/TARGET_IOTSS/port_api.c@147:ba84b7dc41a7, 2016-09-10 (annotated)

Committer:
JojoS
Date:
Sat Sep 10 15:32:04 2016 +0000
Revision:
147:ba84b7dc41a7
Parent:
80:bdf1132a57cf 
added prescaler for 16 bit timers (solution as in LPC11xx), default prescaler 31 for max 28 ms period time

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 80:bdf1132a57cf 1 /* mbed Microcontroller Library
mbed_official 80:bdf1132a57cf 2 * Copyright (c) 2006-2015 ARM Limited
mbed_official 80:bdf1132a57cf 3 *
mbed_official 80:bdf1132a57cf 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 80:bdf1132a57cf 5 * you may not use this file except in compliance with the License.
mbed_official 80:bdf1132a57cf 6 * You may obtain a copy of the License at
mbed_official 80:bdf1132a57cf 7 *
mbed_official 80:bdf1132a57cf 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 80:bdf1132a57cf 9 *
mbed_official 80:bdf1132a57cf 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 80:bdf1132a57cf 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 80:bdf1132a57cf 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 80:bdf1132a57cf 13 * See the License for the specific language governing permissions and
mbed_official 80:bdf1132a57cf 14 * limitations under the License.
mbed_official 80:bdf1132a57cf 15 */
mbed_official 80:bdf1132a57cf 16 #include "port_api.h"
mbed_official 80:bdf1132a57cf 17 #include "pinmap.h"
mbed_official 80:bdf1132a57cf 18 #include "gpio_api.h"
mbed_official 80:bdf1132a57cf 19
mbed_official 80:bdf1132a57cf 20 PinName port_pin(PortName port, int pin_n) {
mbed_official 80:bdf1132a57cf 21 return (PinName)((port << PORT_SHIFT) | pin_n);
mbed_official 80:bdf1132a57cf 22 }
mbed_official 80:bdf1132a57cf 23
mbed_official 80:bdf1132a57cf 24 void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
mbed_official 80:bdf1132a57cf 25 obj->port = port;
mbed_official 80:bdf1132a57cf 26 obj->mask = mask;
mbed_official 80:bdf1132a57cf 27
mbed_official 80:bdf1132a57cf 28 CMSDK_GPIO_TypeDef *port_reg = (CMSDK_GPIO_TypeDef *)(CMSDK_GPIO0_BASE + ((int)port * 0x10));
mbed_official 80:bdf1132a57cf 29
mbed_official 80:bdf1132a57cf 30 obj->reg_in = &port_reg->DATAOUT;
mbed_official 80:bdf1132a57cf 31 obj->reg_dir = &port_reg->OUTENABLESET;
mbed_official 80:bdf1132a57cf 32 obj->reg_dirclr = &port_reg->OUTENABLECLR;
mbed_official 80:bdf1132a57cf 33
mbed_official 80:bdf1132a57cf 34 uint32_t i;
mbed_official 80:bdf1132a57cf 35 // The function is set per pin: reuse gpio logic
mbed_official 80:bdf1132a57cf 36 for (i=0; i<16; i++) {
mbed_official 80:bdf1132a57cf 37 if (obj->mask & (1<<i)) {
mbed_official 80:bdf1132a57cf 38 gpio_set(port_pin(obj->port, i));
mbed_official 80:bdf1132a57cf 39 }
mbed_official 80:bdf1132a57cf 40 }
mbed_official 80:bdf1132a57cf 41
mbed_official 80:bdf1132a57cf 42 port_dir(obj, dir);
mbed_official 80:bdf1132a57cf 43 }
mbed_official 80:bdf1132a57cf 44
mbed_official 80:bdf1132a57cf 45 void port_mode(port_t *obj, PinMode mode) {
mbed_official 80:bdf1132a57cf 46 uint32_t i;
mbed_official 80:bdf1132a57cf 47 // The mode is set per pin: reuse pinmap logic
mbed_official 80:bdf1132a57cf 48 for (i=0; i<32; i++) {
mbed_official 80:bdf1132a57cf 49 if (obj->mask & (1<<i)) {
mbed_official 80:bdf1132a57cf 50 pin_mode(port_pin(obj->port, i), mode);
mbed_official 80:bdf1132a57cf 51 }
mbed_official 80:bdf1132a57cf 52 }
mbed_official 80:bdf1132a57cf 53 }
mbed_official 80:bdf1132a57cf 54
mbed_official 80:bdf1132a57cf 55 void port_dir(port_t *obj, PinDirection dir) {
mbed_official 80:bdf1132a57cf 56 switch (dir) {
mbed_official 80:bdf1132a57cf 57 case PIN_INPUT : *obj->reg_dir &= ~obj->mask; break;
mbed_official 80:bdf1132a57cf 58 case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break;
mbed_official 80:bdf1132a57cf 59 }
mbed_official 80:bdf1132a57cf 60 }
mbed_official 80:bdf1132a57cf 61
mbed_official 80:bdf1132a57cf 62 void port_write(port_t *obj, int value) {
mbed_official 80:bdf1132a57cf 63 *obj->reg_in = value;
mbed_official 80:bdf1132a57cf 64 }
mbed_official 80:bdf1132a57cf 65
mbed_official 80:bdf1132a57cf 66 int port_read(port_t *obj) {
mbed_official 80:bdf1132a57cf 67 return (*obj->reg_in);
mbed_official 80:bdf1132a57cf 68 }