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_KSDK2_MCUS/api/gpio_api.c@147:ba84b7dc41a7, 2016-09-10 (annotated)

Committer:
JojoS
Date:
Sat Sep 10 15:32:04 2016 +0000
Revision:
147:ba84b7dc41a7
Parent:
144:ef7eb2e8f9f7 
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 121:7f86b4238bec 1 /* mbed Microcontroller Library
mbed_official 121:7f86b4238bec 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 121:7f86b4238bec 3 *
mbed_official 121:7f86b4238bec 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 121:7f86b4238bec 5 * you may not use this file except in compliance with the License.
mbed_official 121:7f86b4238bec 6 * You may obtain a copy of the License at
mbed_official 121:7f86b4238bec 7 *
mbed_official 121:7f86b4238bec 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 121:7f86b4238bec 9 *
mbed_official 121:7f86b4238bec 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 121:7f86b4238bec 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 121:7f86b4238bec 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 121:7f86b4238bec 13 * See the License for the specific language governing permissions and
mbed_official 121:7f86b4238bec 14 * limitations under the License.
mbed_official 121:7f86b4238bec 15 */
mbed_official 121:7f86b4238bec 16 #include "mbed_assert.h"
mbed_official 121:7f86b4238bec 17 #include "gpio_api.h"
mbed_official 121:7f86b4238bec 18 #include "pinmap.h"
mbed_official 121:7f86b4238bec 19 #include "fsl_port.h"
<> 144:ef7eb2e8f9f7 20 #include "fsl_gpio.h"
<> 144:ef7eb2e8f9f7 21
<> 144:ef7eb2e8f9f7 22 static GPIO_Type * const gpio_addrs[] = GPIO_BASE_PTRS;
mbed_official 121:7f86b4238bec 23
mbed_official 121:7f86b4238bec 24 uint32_t gpio_set(PinName pin) {
mbed_official 121:7f86b4238bec 25 MBED_ASSERT(pin != (PinName)NC);
mbed_official 121:7f86b4238bec 26 uint32_t pin_num = pin & 0xFF;
mbed_official 121:7f86b4238bec 27
mbed_official 121:7f86b4238bec 28 pin_function(pin, (int)kPORT_MuxAsGpio);
mbed_official 121:7f86b4238bec 29 return 1 << pin_num;
mbed_official 121:7f86b4238bec 30 }
mbed_official 121:7f86b4238bec 31
mbed_official 121:7f86b4238bec 32 void gpio_init(gpio_t *obj, PinName pin) {
mbed_official 121:7f86b4238bec 33 obj->pin = pin;
mbed_official 121:7f86b4238bec 34 if (pin == (PinName)NC)
mbed_official 121:7f86b4238bec 35 return;
mbed_official 121:7f86b4238bec 36
mbed_official 121:7f86b4238bec 37 pin_function(pin, (int)kPORT_MuxAsGpio);
mbed_official 121:7f86b4238bec 38 }
mbed_official 121:7f86b4238bec 39
mbed_official 121:7f86b4238bec 40 void gpio_mode(gpio_t *obj, PinMode mode) {
mbed_official 121:7f86b4238bec 41 pin_mode(obj->pin, mode);
mbed_official 121:7f86b4238bec 42 }
mbed_official 121:7f86b4238bec 43
mbed_official 121:7f86b4238bec 44 void gpio_dir(gpio_t *obj, PinDirection direction) {
mbed_official 121:7f86b4238bec 45 MBED_ASSERT(obj->pin != (PinName)NC);
mbed_official 121:7f86b4238bec 46 uint32_t port = obj->pin >> GPIO_PORT_SHIFT;
mbed_official 121:7f86b4238bec 47 uint32_t pin_num = obj->pin & 0xFF;
mbed_official 121:7f86b4238bec 48 GPIO_Type *base = gpio_addrs[port];
mbed_official 121:7f86b4238bec 49
mbed_official 121:7f86b4238bec 50 switch (direction) {
mbed_official 121:7f86b4238bec 51 case PIN_INPUT:
mbed_official 121:7f86b4238bec 52 base->PDDR &= ~(1U << pin_num);
mbed_official 121:7f86b4238bec 53 break;
mbed_official 121:7f86b4238bec 54 case PIN_OUTPUT:
mbed_official 121:7f86b4238bec 55 base->PDDR |= (1U << pin_num);
mbed_official 121:7f86b4238bec 56 break;
mbed_official 121:7f86b4238bec 57 }
mbed_official 121:7f86b4238bec 58 }
<> 144:ef7eb2e8f9f7 59
<> 144:ef7eb2e8f9f7 60 void gpio_write(gpio_t *obj, int value) {
<> 144:ef7eb2e8f9f7 61 MBED_ASSERT(obj->pin != (PinName)NC);
<> 144:ef7eb2e8f9f7 62 uint32_t port = obj->pin >> GPIO_PORT_SHIFT;
<> 144:ef7eb2e8f9f7 63 uint32_t pin = obj->pin & 0xFF;
<> 144:ef7eb2e8f9f7 64
<> 144:ef7eb2e8f9f7 65 GPIO_WritePinOutput(gpio_addrs[port], pin, value);
<> 144:ef7eb2e8f9f7 66 }
<> 144:ef7eb2e8f9f7 67
<> 144:ef7eb2e8f9f7 68 int gpio_read(gpio_t *obj) {
<> 144:ef7eb2e8f9f7 69 MBED_ASSERT(obj->pin != (PinName)NC);
<> 144:ef7eb2e8f9f7 70 uint32_t port = obj->pin >> GPIO_PORT_SHIFT;
<> 144:ef7eb2e8f9f7 71 uint32_t pin = obj->pin & 0xFF;
<> 144:ef7eb2e8f9f7 72
<> 144:ef7eb2e8f9f7 73 return (int)GPIO_ReadPinInput(gpio_addrs[port], pin);
<> 144:ef7eb2e8f9f7 74 }