Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

targets/hal/TARGET_NUVOTON/TARGET_NUC472/pinmap.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
<> 144:ef7eb2e8f9f7 1 /* mbed Microcontroller Library
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2015-2016 Nuvoton
<> 144:ef7eb2e8f9f7 3 *
<> 144:ef7eb2e8f9f7 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 144:ef7eb2e8f9f7 5 * you may not use this file except in compliance with the License.
<> 144:ef7eb2e8f9f7 6 * You may obtain a copy of the License at
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 144:ef7eb2e8f9f7 9 *
<> 144:ef7eb2e8f9f7 10 * Unless required by applicable law or agreed to in writing, software
<> 144:ef7eb2e8f9f7 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 144:ef7eb2e8f9f7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 144:ef7eb2e8f9f7 13 * See the License for the specific language governing permissions and
<> 144:ef7eb2e8f9f7 14 * limitations under the License.
<> 144:ef7eb2e8f9f7 15 */
<> 144:ef7eb2e8f9f7 16
<> 144:ef7eb2e8f9f7 17 #include "mbed_assert.h"
<> 144:ef7eb2e8f9f7 18 #include "pinmap.h"
<> 144:ef7eb2e8f9f7 19 #include "PortNames.h"
<> 144:ef7eb2e8f9f7 20 #include "mbed_error.h"
<> 144:ef7eb2e8f9f7 21
<> 144:ef7eb2e8f9f7 22 /**
<> 144:ef7eb2e8f9f7 23 * Configure pin multi-function
<> 144:ef7eb2e8f9f7 24 */
<> 144:ef7eb2e8f9f7 25 void pin_function(PinName pin, int data)
<> 144:ef7eb2e8f9f7 26 {
<> 144:ef7eb2e8f9f7 27 MBED_ASSERT(pin != (PinName)NC);
<> 144:ef7eb2e8f9f7 28 uint32_t pin_index = NU_PINNAME_TO_PIN(pin);
<> 144:ef7eb2e8f9f7 29 uint32_t port_index = NU_PINNAME_TO_PORT(pin);
<> 144:ef7eb2e8f9f7 30 __IO uint32_t *GPx_MFPx = ((__IO uint32_t *) &SYS->GPA_MFPL) + port_index * 2 + (pin_index / 8);
<> 144:ef7eb2e8f9f7 31 //uint32_t MFP_Pos = NU_MFP_POS(pin_index);
<> 144:ef7eb2e8f9f7 32 uint32_t MFP_Msk = NU_MFP_MSK(pin_index);
<> 144:ef7eb2e8f9f7 33
<> 144:ef7eb2e8f9f7 34 // E.g.: SYS->GPA_MFPL = (SYS->GPA_MFPL & (~SYS_GPA_MFPL_PA0MFP_Msk) ) | SYS_GPA_MFPL_PA0MFP_SC0_CD ;
<> 144:ef7eb2e8f9f7 35 *GPx_MFPx = (*GPx_MFPx & (~MFP_Msk)) | data;
<> 144:ef7eb2e8f9f7 36
<> 144:ef7eb2e8f9f7 37 // [TODO] Disconnect JTAG-DP + SW-DP signals.
<> 144:ef7eb2e8f9f7 38 // Warning: Need to reconnect under reset
<> 144:ef7eb2e8f9f7 39 //if ((pin == PA_13) || (pin == PA_14)) {
<> 144:ef7eb2e8f9f7 40 //
<> 144:ef7eb2e8f9f7 41 //}
<> 144:ef7eb2e8f9f7 42 //if ((pin == PA_15) || (pin == PB_3) || (pin == PB_4)) {
<> 144:ef7eb2e8f9f7 43 //
<> 144:ef7eb2e8f9f7 44 //}
<> 144:ef7eb2e8f9f7 45 }
<> 144:ef7eb2e8f9f7 46
<> 144:ef7eb2e8f9f7 47 /**
<> 144:ef7eb2e8f9f7 48 * Configure pin pull-up/pull-down
<> 144:ef7eb2e8f9f7 49 */
<> 144:ef7eb2e8f9f7 50 void pin_mode(PinName pin, PinMode mode)
<> 144:ef7eb2e8f9f7 51 {
<> 144:ef7eb2e8f9f7 52 MBED_ASSERT(pin != (PinName)NC);
<> 144:ef7eb2e8f9f7 53 uint32_t pin_index = NU_PINNAME_TO_PIN(pin);
<> 144:ef7eb2e8f9f7 54 uint32_t port_index = NU_PINNAME_TO_PORT(pin);
<> 144:ef7eb2e8f9f7 55 GPIO_T *gpio_base = NU_PORT_BASE(port_index);
<> 144:ef7eb2e8f9f7 56
<> 144:ef7eb2e8f9f7 57 uint32_t mode_intern = GPIO_MODE_INPUT;
<> 144:ef7eb2e8f9f7 58
<> 144:ef7eb2e8f9f7 59 switch (mode) {
<> 144:ef7eb2e8f9f7 60 case PullUp:
<> 144:ef7eb2e8f9f7 61 mode_intern = GPIO_MODE_INPUT;
<> 144:ef7eb2e8f9f7 62 break;
<> 144:ef7eb2e8f9f7 63
<> 144:ef7eb2e8f9f7 64 case PullDown:
<> 144:ef7eb2e8f9f7 65 case PullNone:
<> 144:ef7eb2e8f9f7 66 // NOTE: Not support
<> 144:ef7eb2e8f9f7 67 return;
<> 144:ef7eb2e8f9f7 68
<> 144:ef7eb2e8f9f7 69 case PushPull:
<> 144:ef7eb2e8f9f7 70 mode_intern = GPIO_MODE_OUTPUT;
<> 144:ef7eb2e8f9f7 71 break;
<> 144:ef7eb2e8f9f7 72
<> 144:ef7eb2e8f9f7 73 case OpenDrain:
<> 144:ef7eb2e8f9f7 74 mode_intern = GPIO_MODE_OPEN_DRAIN;
<> 144:ef7eb2e8f9f7 75 break;
<> 144:ef7eb2e8f9f7 76
<> 144:ef7eb2e8f9f7 77 case Quasi:
<> 144:ef7eb2e8f9f7 78 mode_intern = GPIO_MODE_QUASI;
<> 144:ef7eb2e8f9f7 79 break;
<> 144:ef7eb2e8f9f7 80 }
<> 144:ef7eb2e8f9f7 81
<> 144:ef7eb2e8f9f7 82 GPIO_SetMode(gpio_base, 1 << pin_index, mode_intern);
<> 144:ef7eb2e8f9f7 83 }