Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

targets/hal/TARGET_NUVOTON/nu_miscutil.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 "PinNames.h"
<> 144:ef7eb2e8f9f7 19 #include "nu_miscutil.h"
<> 144:ef7eb2e8f9f7 20
<> 144:ef7eb2e8f9f7 21 void nu_nop(uint32_t n)
<> 144:ef7eb2e8f9f7 22 {
<> 144:ef7eb2e8f9f7 23 uint32_t times = n / 10;
<> 144:ef7eb2e8f9f7 24 uint32_t rmn = n % 10;
<> 144:ef7eb2e8f9f7 25
<> 144:ef7eb2e8f9f7 26 while (times --) {
<> 144:ef7eb2e8f9f7 27 __NOP();
<> 144:ef7eb2e8f9f7 28 __NOP();
<> 144:ef7eb2e8f9f7 29 __NOP();
<> 144:ef7eb2e8f9f7 30 __NOP();
<> 144:ef7eb2e8f9f7 31 __NOP();
<> 144:ef7eb2e8f9f7 32 __NOP();
<> 144:ef7eb2e8f9f7 33 __NOP();
<> 144:ef7eb2e8f9f7 34 __NOP();
<> 144:ef7eb2e8f9f7 35 __NOP();
<> 144:ef7eb2e8f9f7 36 __NOP();
<> 144:ef7eb2e8f9f7 37 }
<> 144:ef7eb2e8f9f7 38
<> 144:ef7eb2e8f9f7 39 switch (rmn) {
<> 144:ef7eb2e8f9f7 40 case 9:
<> 144:ef7eb2e8f9f7 41 __NOP();
<> 144:ef7eb2e8f9f7 42 case 8:
<> 144:ef7eb2e8f9f7 43 __NOP();
<> 144:ef7eb2e8f9f7 44 case 7:
<> 144:ef7eb2e8f9f7 45 __NOP();
<> 144:ef7eb2e8f9f7 46 case 6:
<> 144:ef7eb2e8f9f7 47 __NOP();
<> 144:ef7eb2e8f9f7 48 case 5:
<> 144:ef7eb2e8f9f7 49 __NOP();
<> 144:ef7eb2e8f9f7 50 case 4:
<> 144:ef7eb2e8f9f7 51 __NOP();
<> 144:ef7eb2e8f9f7 52 case 3:
<> 144:ef7eb2e8f9f7 53 __NOP();
<> 144:ef7eb2e8f9f7 54 case 2:
<> 144:ef7eb2e8f9f7 55 __NOP();
<> 144:ef7eb2e8f9f7 56 case 1:
<> 144:ef7eb2e8f9f7 57 __NOP();
<> 144:ef7eb2e8f9f7 58 default:
<> 144:ef7eb2e8f9f7 59 break;
<> 144:ef7eb2e8f9f7 60 }
<> 144:ef7eb2e8f9f7 61 }