Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

targets/hal/TARGET_RENESAS/TARGET_VK_RZ_A1H/gpio_api.c@147:ba84b7dc41a7, 2016-09-10 (annotated)

Committer:
JojoS
Date:
Sat Sep 10 15:32:04 2016 +0000
Revision:
147:ba84b7dc41a7
Parent:
119:3921aeca8633 
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 119:3921aeca8633 1 /* mbed Microcontroller Library
mbed_official 119:3921aeca8633 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 119:3921aeca8633 3 *
mbed_official 119:3921aeca8633 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 119:3921aeca8633 5 * you may not use this file except in compliance with the License.
mbed_official 119:3921aeca8633 6 * You may obtain a copy of the License at
mbed_official 119:3921aeca8633 7 *
mbed_official 119:3921aeca8633 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 119:3921aeca8633 9 *
mbed_official 119:3921aeca8633 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 119:3921aeca8633 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 119:3921aeca8633 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 119:3921aeca8633 13 * See the License for the specific language governing permissions and
mbed_official 119:3921aeca8633 14 * limitations under the License.
mbed_official 119:3921aeca8633 15 */
mbed_official 119:3921aeca8633 16 #include "gpio_api.h"
mbed_official 119:3921aeca8633 17 #include "pinmap.h"
mbed_official 119:3921aeca8633 18 #include "gpio_addrdefine.h"
mbed_official 119:3921aeca8633 19
mbed_official 119:3921aeca8633 20
mbed_official 119:3921aeca8633 21 uint32_t gpio_set(PinName pin) {
mbed_official 119:3921aeca8633 22 pin_function(pin, 0);
mbed_official 119:3921aeca8633 23 return (1 << PINNO(pin));
mbed_official 119:3921aeca8633 24 }
mbed_official 119:3921aeca8633 25
mbed_official 119:3921aeca8633 26 void gpio_init(gpio_t *obj, PinName pin) {
mbed_official 119:3921aeca8633 27 int group ;
mbed_official 119:3921aeca8633 28 obj->pin = pin;
mbed_official 119:3921aeca8633 29 if(pin == NC) return;
mbed_official 119:3921aeca8633 30
mbed_official 119:3921aeca8633 31 obj->mask = gpio_set(pin);
mbed_official 119:3921aeca8633 32
mbed_official 119:3921aeca8633 33 group = PINGROUP(pin);
mbed_official 119:3921aeca8633 34 if (group > 9) return;
mbed_official 119:3921aeca8633 35
mbed_official 119:3921aeca8633 36 obj->reg_set = (volatile uint32_t *) PSR(group);
mbed_official 119:3921aeca8633 37 obj->reg_in = (volatile uint32_t *) PPR(group);
mbed_official 119:3921aeca8633 38 obj->reg_dir = (volatile uint32_t *)PMSR(group);
mbed_official 119:3921aeca8633 39 obj->reg_buf = (volatile uint32_t *)PIBC(group);
mbed_official 119:3921aeca8633 40 }
mbed_official 119:3921aeca8633 41
mbed_official 119:3921aeca8633 42 void gpio_mode(gpio_t *obj, PinMode mode) {
mbed_official 119:3921aeca8633 43 /* Pull up and Pull down settings aren't supported because RZ/A1H doesn't have pull up/down for pins(signals). */
mbed_official 119:3921aeca8633 44 }
mbed_official 119:3921aeca8633 45
mbed_official 119:3921aeca8633 46 void gpio_dir(gpio_t *obj, PinDirection direction) {
mbed_official 119:3921aeca8633 47 switch (direction) {
mbed_official 119:3921aeca8633 48 case PIN_INPUT :
mbed_official 119:3921aeca8633 49 *obj->reg_dir = (obj->mask << 16) | obj->mask;
mbed_official 119:3921aeca8633 50 *obj->reg_buf |= obj->mask;
mbed_official 119:3921aeca8633 51 break;
mbed_official 119:3921aeca8633 52 case PIN_OUTPUT:
mbed_official 119:3921aeca8633 53 *obj->reg_dir = (obj->mask << 16) | 0;
mbed_official 119:3921aeca8633 54 *obj->reg_buf &= ~obj->mask;
mbed_official 119:3921aeca8633 55 break;
mbed_official 119:3921aeca8633 56 }
mbed_official 119:3921aeca8633 57 }