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/pinmap.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 <stddef.h>
mbed_official 15:a81a8d6c1dfe 17
mbed_official 15:a81a8d6c1dfe 18 #include "cmsis.h"
mbed_official 15:a81a8d6c1dfe 19 #include "mbed_assert.h"
mbed_official 15:a81a8d6c1dfe 20 #include "compiler.h"
mbed_official 15:a81a8d6c1dfe 21
mbed_official 15:a81a8d6c1dfe 22 #include "pinmux.h"
mbed_official 15:a81a8d6c1dfe 23 #include "pinmap.h"
mbed_official 15:a81a8d6c1dfe 24
mbed_official 15:a81a8d6c1dfe 25 extern uint8_t g_sys_init;
mbed_official 15:a81a8d6c1dfe 26
mbed_official 15:a81a8d6c1dfe 27
mbed_official 15:a81a8d6c1dfe 28 static inline void pinmux_get_current_config(PinName pin, struct system_pinmux_config *const config)
mbed_official 15:a81a8d6c1dfe 29 {
mbed_official 15:a81a8d6c1dfe 30 MBED_ASSERT(pin != (PinName)NC);
mbed_official 15:a81a8d6c1dfe 31 uint32_t pin_index = pin % 32;
mbed_official 15:a81a8d6c1dfe 32 uint32_t pin_mask = (uint32_t)(1UL << pin_index);
mbed_official 15:a81a8d6c1dfe 33
mbed_official 15:a81a8d6c1dfe 34 PortGroup *const port = system_pinmux_get_group_from_gpio_pin(pin);
mbed_official 15:a81a8d6c1dfe 35 MBED_ASSERT(port);
mbed_official 15:a81a8d6c1dfe 36
mbed_official 15:a81a8d6c1dfe 37 config->mux_position = system_pinmux_pin_get_mux_position(pin);
mbed_official 15:a81a8d6c1dfe 38
mbed_official 15:a81a8d6c1dfe 39 if (port->PINCFG[pin_index].reg & PORT_PINCFG_INEN) {
mbed_official 15:a81a8d6c1dfe 40 if (port->DIR.reg & pin_mask) {
mbed_official 15:a81a8d6c1dfe 41 config->direction = SYSTEM_PINMUX_PIN_DIR_OUTPUT_WITH_READBACK;
mbed_official 15:a81a8d6c1dfe 42 config->input_pull = SYSTEM_PINMUX_PIN_PULL_NONE;
mbed_official 15:a81a8d6c1dfe 43 } else {
mbed_official 15:a81a8d6c1dfe 44 config->direction = SYSTEM_PINMUX_PIN_DIR_INPUT;
mbed_official 15:a81a8d6c1dfe 45 if (port->PINCFG[pin_index].reg & PORT_PINCFG_PULLEN) {
mbed_official 15:a81a8d6c1dfe 46 if (port->OUT.reg & pin_mask) {
mbed_official 15:a81a8d6c1dfe 47 config->input_pull = SYSTEM_PINMUX_PIN_PULL_UP;
mbed_official 15:a81a8d6c1dfe 48 } else {
mbed_official 15:a81a8d6c1dfe 49 config->input_pull = SYSTEM_PINMUX_PIN_PULL_DOWN;
mbed_official 15:a81a8d6c1dfe 50 }
mbed_official 15:a81a8d6c1dfe 51 } else {
mbed_official 15:a81a8d6c1dfe 52 config->input_pull = SYSTEM_PINMUX_PIN_PULL_NONE;
mbed_official 15:a81a8d6c1dfe 53 }
mbed_official 15:a81a8d6c1dfe 54 }
mbed_official 15:a81a8d6c1dfe 55 } else {
mbed_official 15:a81a8d6c1dfe 56 config->input_pull = SYSTEM_PINMUX_PIN_PULL_NONE;
mbed_official 15:a81a8d6c1dfe 57 config->direction = SYSTEM_PINMUX_PIN_DIR_OUTPUT;
mbed_official 15:a81a8d6c1dfe 58 }
mbed_official 15:a81a8d6c1dfe 59
mbed_official 15:a81a8d6c1dfe 60 /* Not relevant for now */
mbed_official 15:a81a8d6c1dfe 61 config->powersave = false;
mbed_official 15:a81a8d6c1dfe 62 }
mbed_official 15:a81a8d6c1dfe 63
mbed_official 15:a81a8d6c1dfe 64 /** Change the MUX padding of input pin
mbed_official 15:a81a8d6c1dfe 65 *
mbed_official 15:a81a8d6c1dfe 66 * Configure the pin for specific module
mbed_official 15:a81a8d6c1dfe 67 * @param[in] pin Pin name whose MUX padding is to be changed
mbed_official 15:a81a8d6c1dfe 68 * @param[in] function The MUX mode to be selected
mbed_official 15:a81a8d6c1dfe 69 * @return void
mbed_official 15:a81a8d6c1dfe 70 */
mbed_official 15:a81a8d6c1dfe 71 void pin_function(PinName pin, int function)
mbed_official 15:a81a8d6c1dfe 72 {
mbed_official 15:a81a8d6c1dfe 73 MBED_ASSERT(pin != (PinName)NC);
mbed_official 15:a81a8d6c1dfe 74
mbed_official 15:a81a8d6c1dfe 75 struct system_pinmux_config pin_conf;
mbed_official 15:a81a8d6c1dfe 76
mbed_official 15:a81a8d6c1dfe 77 pinmux_get_current_config(pin, &pin_conf);
mbed_official 15:a81a8d6c1dfe 78 pin_conf.mux_position = function;
mbed_official 15:a81a8d6c1dfe 79
mbed_official 15:a81a8d6c1dfe 80 system_pinmux_pin_set_config(pin, &pin_conf);
mbed_official 15:a81a8d6c1dfe 81 }
mbed_official 15:a81a8d6c1dfe 82
mbed_official 15:a81a8d6c1dfe 83 /** Change the pin pull mode
mbed_official 15:a81a8d6c1dfe 84 *
mbed_official 15:a81a8d6c1dfe 85 * Configure the pin pull mode
mbed_official 15:a81a8d6c1dfe 86 * @param[in] pin Pin name whose MUX padding is to be changed
mbed_official 15:a81a8d6c1dfe 87 * @param[in] mode Pin pull mode to be set
mbed_official 15:a81a8d6c1dfe 88 * @return void
mbed_official 15:a81a8d6c1dfe 89 */
mbed_official 15:a81a8d6c1dfe 90 void pin_mode(PinName pin, PinMode mode)
mbed_official 15:a81a8d6c1dfe 91 {
mbed_official 15:a81a8d6c1dfe 92 MBED_ASSERT(pin != (PinName)NC);
mbed_official 15:a81a8d6c1dfe 93
mbed_official 15:a81a8d6c1dfe 94 struct system_pinmux_config pin_conf;
mbed_official 15:a81a8d6c1dfe 95
mbed_official 15:a81a8d6c1dfe 96 pinmux_get_current_config(pin, &pin_conf);
mbed_official 15:a81a8d6c1dfe 97 if (mode == PullUp) {
mbed_official 15:a81a8d6c1dfe 98 pin_conf.input_pull = SYSTEM_PINMUX_PIN_PULL_UP;
mbed_official 15:a81a8d6c1dfe 99 } else if (mode == PullDown) {
mbed_official 15:a81a8d6c1dfe 100 pin_conf.input_pull = SYSTEM_PINMUX_PIN_PULL_DOWN;
mbed_official 15:a81a8d6c1dfe 101 } else {
mbed_official 15:a81a8d6c1dfe 102 pin_conf.input_pull = SYSTEM_PINMUX_PIN_PULL_NONE;
mbed_official 15:a81a8d6c1dfe 103 }
mbed_official 15:a81a8d6c1dfe 104
mbed_official 15:a81a8d6c1dfe 105 system_pinmux_pin_set_config(pin, &pin_conf);
mbed_official 64:41a834223ea3 106 }