Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

targets/hal/TARGET_Atmel/TARGET_SAM_CortexM0P/gpio_api.c@147:ba84b7dc41a7, 2016-09-10 (annotated)

Committer:
JojoS
Date:
Sat Sep 10 15:32:04 2016 +0000
Revision:
147:ba84b7dc41a7
Parent:
64:41a834223ea3 
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 15:a81a8d6c1dfe 1 /* mbed Microcontroller Library
mbed_official 15:a81a8d6c1dfe 2 * Copyright (c) 2006-2015 ARM Limited
mbed_official 15:a81a8d6c1dfe 3 *
mbed_official 15:a81a8d6c1dfe 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 15:a81a8d6c1dfe 5 * you may not use this file except in compliance with the License.
mbed_official 15:a81a8d6c1dfe 6 * You may obtain a copy of the License at
mbed_official 15:a81a8d6c1dfe 7 *
mbed_official 15:a81a8d6c1dfe 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 15:a81a8d6c1dfe 9 *
mbed_official 15:a81a8d6c1dfe 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 15:a81a8d6c1dfe 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 15:a81a8d6c1dfe 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 15:a81a8d6c1dfe 13 * See the License for the specific language governing permissions and
mbed_official 15:a81a8d6c1dfe 14 * limitations under the License.
mbed_official 15:a81a8d6c1dfe 15 */
mbed_official 15:a81a8d6c1dfe 16 #include "mbed_assert.h"
mbed_official 15:a81a8d6c1dfe 17 #include "PinNames.h"
mbed_official 15:a81a8d6c1dfe 18 #include "gpio_object.h"
mbed_official 15:a81a8d6c1dfe 19 #include "gpio_api.h"
mbed_official 15:a81a8d6c1dfe 20 #include "compiler.h"
mbed_official 15:a81a8d6c1dfe 21 #include "port.h"
mbed_official 15:a81a8d6c1dfe 22
mbed_official 15:a81a8d6c1dfe 23 uint32_t gpio_set(PinName pin)
mbed_official 15:a81a8d6c1dfe 24 {
mbed_official 15:a81a8d6c1dfe 25 MBED_ASSERT(pin != (PinName)NC);
mbed_official 15:a81a8d6c1dfe 26 return (1UL << (pin % 32));
mbed_official 15:a81a8d6c1dfe 27 }
mbed_official 15:a81a8d6c1dfe 28
mbed_official 15:a81a8d6c1dfe 29 void gpio_init(gpio_t *obj, PinName pin)
mbed_official 15:a81a8d6c1dfe 30 {
mbed_official 15:a81a8d6c1dfe 31 MBED_ASSERT(pin != (PinName)NC);
mbed_official 15:a81a8d6c1dfe 32 struct port_config pin_conf;
mbed_official 15:a81a8d6c1dfe 33 PortGroup *const port_base = (PortGroup*)port_get_group_from_gpio_pin(pin);
mbed_official 15:a81a8d6c1dfe 34
mbed_official 15:a81a8d6c1dfe 35 obj->pin = pin;
mbed_official 15:a81a8d6c1dfe 36 if (pin == (PinName)NC)
mbed_official 15:a81a8d6c1dfe 37 return;
mbed_official 15:a81a8d6c1dfe 38
mbed_official 15:a81a8d6c1dfe 39 obj->mask = gpio_set(pin);
mbed_official 15:a81a8d6c1dfe 40 port_get_config_defaults(&pin_conf);
mbed_official 15:a81a8d6c1dfe 41 obj->powersave = pin_conf.powersave;
mbed_official 15:a81a8d6c1dfe 42 obj->direction = PORT_PIN_DIR_INPUT;
mbed_official 15:a81a8d6c1dfe 43 obj->mode = PORT_PIN_PULL_UP;
mbed_official 15:a81a8d6c1dfe 44 port_pin_set_config(pin, &pin_conf);
mbed_official 15:a81a8d6c1dfe 45
mbed_official 15:a81a8d6c1dfe 46 obj->OUTCLR = &port_base->OUTCLR.reg;
mbed_official 15:a81a8d6c1dfe 47 obj->OUTSET = &port_base->OUTSET.reg;
mbed_official 15:a81a8d6c1dfe 48 obj->IN = &port_base->IN.reg;
mbed_official 15:a81a8d6c1dfe 49 obj->OUT = &port_base->OUT.reg;
mbed_official 15:a81a8d6c1dfe 50 }
mbed_official 15:a81a8d6c1dfe 51
mbed_official 15:a81a8d6c1dfe 52 void gpio_mode(gpio_t *obj, PinMode mode)
mbed_official 15:a81a8d6c1dfe 53 {
mbed_official 15:a81a8d6c1dfe 54 MBED_ASSERT(obj->pin != (PinName)NC);
mbed_official 15:a81a8d6c1dfe 55 struct port_config pin_conf;
mbed_official 15:a81a8d6c1dfe 56
mbed_official 15:a81a8d6c1dfe 57 obj->mode = mode;
mbed_official 64:41a834223ea3 58 pin_conf.direction = (enum port_pin_dir)obj->direction;
mbed_official 15:a81a8d6c1dfe 59 pin_conf.powersave = obj->powersave;
mbed_official 15:a81a8d6c1dfe 60 switch (mode) {
mbed_official 15:a81a8d6c1dfe 61 case PullNone :
mbed_official 15:a81a8d6c1dfe 62 pin_conf.input_pull = PORT_PIN_PULL_NONE;
mbed_official 15:a81a8d6c1dfe 63 break;
mbed_official 15:a81a8d6c1dfe 64 case PullUp:
mbed_official 15:a81a8d6c1dfe 65 pin_conf.input_pull = PORT_PIN_PULL_UP;
mbed_official 15:a81a8d6c1dfe 66 break;
mbed_official 15:a81a8d6c1dfe 67 case PullDown:
mbed_official 15:a81a8d6c1dfe 68 pin_conf.input_pull = PORT_PIN_PULL_DOWN;
mbed_official 15:a81a8d6c1dfe 69 break;
mbed_official 15:a81a8d6c1dfe 70 }
mbed_official 15:a81a8d6c1dfe 71 port_pin_set_config(obj->pin, &pin_conf);
mbed_official 15:a81a8d6c1dfe 72 }
mbed_official 15:a81a8d6c1dfe 73
mbed_official 15:a81a8d6c1dfe 74 void gpio_dir(gpio_t *obj, PinDirection direction)
mbed_official 15:a81a8d6c1dfe 75 {
mbed_official 15:a81a8d6c1dfe 76 MBED_ASSERT(obj->pin != (PinName)NC);
mbed_official 15:a81a8d6c1dfe 77 struct port_config pin_conf;
mbed_official 15:a81a8d6c1dfe 78 obj->direction = direction;
mbed_official 64:41a834223ea3 79 pin_conf.input_pull = (enum port_pin_pull)obj->mode;
mbed_official 15:a81a8d6c1dfe 80 pin_conf.powersave = obj->powersave;
mbed_official 15:a81a8d6c1dfe 81 switch (direction) {
mbed_official 15:a81a8d6c1dfe 82 case PIN_INPUT :
mbed_official 15:a81a8d6c1dfe 83 pin_conf.direction = PORT_PIN_DIR_INPUT;
mbed_official 15:a81a8d6c1dfe 84 break;
mbed_official 15:a81a8d6c1dfe 85 case PIN_OUTPUT:
mbed_official 15:a81a8d6c1dfe 86 pin_conf.direction = PORT_PIN_DIR_OUTPUT;
mbed_official 15:a81a8d6c1dfe 87 break;
mbed_official 15:a81a8d6c1dfe 88 case PIN_INPUT_OUTPUT:
mbed_official 15:a81a8d6c1dfe 89 pin_conf.direction = PORT_PIN_DIR_OUTPUT_WTH_READBACK;
mbed_official 15:a81a8d6c1dfe 90 break;
mbed_official 15:a81a8d6c1dfe 91 }
mbed_official 15:a81a8d6c1dfe 92 port_pin_set_config(obj->pin, &pin_conf);
mbed_official 15:a81a8d6c1dfe 93 }