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/port_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 "port_api.h"
mbed_official 119:3921aeca8633 17 #include "pinmap.h"
mbed_official 119:3921aeca8633 18 #include "gpio_api.h"
mbed_official 119:3921aeca8633 19 #include "gpio_addrdefine.h"
mbed_official 119:3921aeca8633 20
mbed_official 119:3921aeca8633 21 PinName port_pin(PortName port, int pin_n) {
mbed_official 119:3921aeca8633 22 return (PinName)((port*0x10)+pin_n);
mbed_official 119:3921aeca8633 23 }
mbed_official 119:3921aeca8633 24
mbed_official 119:3921aeca8633 25 void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
mbed_official 119:3921aeca8633 26 obj->port = port;
mbed_official 119:3921aeca8633 27 obj->mask = mask;
mbed_official 119:3921aeca8633 28
mbed_official 119:3921aeca8633 29 obj->reg_dir = (volatile uint32_t *)PMSR(port);
mbed_official 119:3921aeca8633 30 obj->reg_out = (volatile uint32_t *)PORT(port);
mbed_official 119:3921aeca8633 31 obj->reg_in = (volatile uint32_t *)PPR(port);
mbed_official 119:3921aeca8633 32 obj->reg_buf = (volatile uint32_t *)PIBC(port);
mbed_official 119:3921aeca8633 33 // Do not use masking, because it prevents the use of the unmasked pins
mbed_official 119:3921aeca8633 34 // port_reg->FIOMASK = ~mask;
mbed_official 119:3921aeca8633 35
mbed_official 119:3921aeca8633 36 uint32_t i;
mbed_official 119:3921aeca8633 37 // The function is set per pin: reuse gpio logic
mbed_official 119:3921aeca8633 38 for (i=0; i<32; i++) {
mbed_official 119:3921aeca8633 39 if (obj->mask & (1<<i)) {
mbed_official 119:3921aeca8633 40 gpio_set(port_pin(obj->port, i));
mbed_official 119:3921aeca8633 41 }
mbed_official 119:3921aeca8633 42 }
mbed_official 119:3921aeca8633 43
mbed_official 119:3921aeca8633 44 port_dir(obj, dir);
mbed_official 119:3921aeca8633 45 }
mbed_official 119:3921aeca8633 46
mbed_official 119:3921aeca8633 47 void port_mode(port_t *obj, PinMode mode) {
mbed_official 119:3921aeca8633 48 uint32_t i;
mbed_official 119:3921aeca8633 49 // The mode is set per pin: reuse pinmap logic
mbed_official 119:3921aeca8633 50 for (i=0; i<32; i++) {
mbed_official 119:3921aeca8633 51 if (obj->mask & (1<<i)) {
mbed_official 119:3921aeca8633 52 pin_mode(port_pin(obj->port, i), mode);
mbed_official 119:3921aeca8633 53 }
mbed_official 119:3921aeca8633 54 }
mbed_official 119:3921aeca8633 55 }
mbed_official 119:3921aeca8633 56
mbed_official 119:3921aeca8633 57 void port_dir(port_t *obj, PinDirection dir) {
mbed_official 119:3921aeca8633 58 switch (dir) {
mbed_official 119:3921aeca8633 59 case PIN_INPUT : *obj->reg_dir = (obj->mask << 16) | obj->mask;
mbed_official 119:3921aeca8633 60 *obj->reg_buf |= obj->mask;
mbed_official 119:3921aeca8633 61 break;
mbed_official 119:3921aeca8633 62 case PIN_OUTPUT: *obj->reg_dir = (obj->mask << 16) | ~obj->mask;
mbed_official 119:3921aeca8633 63 *obj->reg_buf &= ~obj->mask;
mbed_official 119:3921aeca8633 64 break;
mbed_official 119:3921aeca8633 65 }
mbed_official 119:3921aeca8633 66 }
mbed_official 119:3921aeca8633 67
mbed_official 119:3921aeca8633 68 void port_write(port_t *obj, int value) {
mbed_official 119:3921aeca8633 69 *obj->reg_out = (obj->mask << 16) | (value & obj->mask);
mbed_official 119:3921aeca8633 70 }
mbed_official 119:3921aeca8633 71
mbed_official 119:3921aeca8633 72 int port_read(port_t *obj) {
mbed_official 119:3921aeca8633 73 return (*obj->reg_in & obj->mask);
mbed_official 119:3921aeca8633 74 }