b luo / mbed-dev

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Fork of mbed-dev by mbed official

targets/TARGET_NUVOTON/TARGET_M451/TARGET_NUMAKER_PFM_M453/mbed_overrides.c@151:91825d030f9b, 2016-11-14 (annotated)

Committer:
DangerousElectrician
Date:
Mon Nov 14 04:39:23 2016 +0000
Revision:
151:91825d030f9b
Parent:
149:156823d33999 
stuff changed?

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 149:156823d33999 1 /* mbed Microcontroller Library
<> 149:156823d33999 2 * Copyright (c) 2015-2016 Nuvoton
<> 149:156823d33999 3 *
<> 149:156823d33999 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 149:156823d33999 5 * you may not use this file except in compliance with the License.
<> 149:156823d33999 6 * You may obtain a copy of the License at
<> 149:156823d33999 7 *
<> 149:156823d33999 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 149:156823d33999 9 *
<> 149:156823d33999 10 * Unless required by applicable law or agreed to in writing, software
<> 149:156823d33999 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 149:156823d33999 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 149:156823d33999 13 * See the License for the specific language governing permissions and
<> 149:156823d33999 14 * limitations under the License.
<> 149:156823d33999 15 */
<> 149:156823d33999 16
<> 149:156823d33999 17 #include "analogin_api.h"
<> 149:156823d33999 18
<> 149:156823d33999 19 // NOTE: Ensurce mbed_sdk_init() will get called before C++ global object constructor.
<> 149:156823d33999 20 #if defined(__CC_ARM) || defined(__GNUC__)
<> 149:156823d33999 21 void mbed_sdk_init_forced(void) __attribute__((constructor(101)));
<> 149:156823d33999 22 #elif defined(__ICCARM__)
<> 149:156823d33999 23 // FIXME: How to achieve it in IAR?
<> 149:156823d33999 24 #endif
<> 149:156823d33999 25
<> 149:156823d33999 26
<> 149:156823d33999 27 void mbed_sdk_init(void)
<> 149:156823d33999 28 {
<> 149:156823d33999 29 // NOTE: Support singleton semantics to be called from other init functions
<> 149:156823d33999 30 static int inited = 0;
<> 149:156823d33999 31 if (inited) {
<> 149:156823d33999 32 return;
<> 149:156823d33999 33 }
<> 149:156823d33999 34 inited = 1;
<> 149:156823d33999 35
<> 149:156823d33999 36 /*---------------------------------------------------------------------------------------------------------*/
<> 149:156823d33999 37 /* Init System Clock */
<> 149:156823d33999 38 /*---------------------------------------------------------------------------------------------------------*/
<> 149:156823d33999 39 /* Unlock protected registers */
<> 149:156823d33999 40 SYS_UnlockReg();
<> 149:156823d33999 41
<> 149:156823d33999 42 /* Enable HIRC clock (Internal RC 22.1184MHz) */
<> 149:156823d33999 43 CLK_EnableXtalRC(CLK_PWRCTL_HIRCEN_Msk);
<> 149:156823d33999 44 /* Enable HXT clock (external XTAL 12MHz) */
<> 149:156823d33999 45 CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);
<> 149:156823d33999 46 /* Enable LIRC for lp_ticker */
<> 149:156823d33999 47 CLK_EnableXtalRC(CLK_PWRCTL_LIRCEN_Msk);
<> 149:156823d33999 48 /* Enable LXT for RTC */
<> 149:156823d33999 49 CLK_EnableXtalRC(CLK_PWRCTL_LXTEN_Msk);
<> 149:156823d33999 50
<> 149:156823d33999 51 /* Wait for HIRC clock ready */
<> 149:156823d33999 52 CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk);
<> 149:156823d33999 53 /* Wait for HXT clock ready */
<> 149:156823d33999 54 CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk);
<> 149:156823d33999 55 /* Wait for LIRC clock ready */
<> 149:156823d33999 56 CLK_WaitClockReady(CLK_STATUS_LIRCSTB_Msk);
<> 149:156823d33999 57 /* Wait for LXT clock ready */
<> 149:156823d33999 58 CLK_WaitClockReady(CLK_STATUS_LXTSTB_Msk);
<> 149:156823d33999 59
<> 149:156823d33999 60 /* Select HCLK clock source as HIRC and HCLK clock divider as 1 */
<> 149:156823d33999 61 CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HIRC, CLK_CLKDIV0_HCLK(1));
<> 149:156823d33999 62
<> 149:156823d33999 63 /* Set core clock as 72000000 from PLL */
<> 149:156823d33999 64 CLK_SetCoreClock(72000000);
<> 149:156823d33999 65
<> 149:156823d33999 66 #if DEVICE_ANALOGIN
<> 149:156823d33999 67 // FIXME: Check voltage reference for EADC
<> 149:156823d33999 68 /* Vref connect to AVDD */
<> 149:156823d33999 69 //SYS->VREFCTL = (SYS->VREFCTL & ~SYS_VREFCTL_VREFCTL_Msk) | SYS_VREFCTL_VREF_AVDD;
<> 149:156823d33999 70 #endif
<> 149:156823d33999 71
<> 149:156823d33999 72 /* Update System Core Clock */
<> 149:156823d33999 73 /* User can use SystemCoreClockUpdate() to calculate SystemCoreClock. */
<> 149:156823d33999 74 SystemCoreClockUpdate();
<> 149:156823d33999 75
<> 149:156823d33999 76 /* Lock protected registers */
<> 149:156823d33999 77 SYS_LockReg();
<> 149:156823d33999 78 }
<> 149:156823d33999 79
<> 149:156823d33999 80 void mbed_sdk_init_forced(void)
<> 149:156823d33999 81 {
<> 149:156823d33999 82 mbed_sdk_init();
<> 149:156823d33999 83 }