mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

targets/TARGET_NUVOTON/TARGET_M451/mbed_overrides.c@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
Parent:
187:0387e8f68319 
mbed library release version 165

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 void mbed_sdk_init(void)
<> 149:156823d33999 20 {
<> 149:156823d33999 21 // NOTE: Support singleton semantics to be called from other init functions
<> 149:156823d33999 22 static int inited = 0;
<> 149:156823d33999 23 if (inited) {
<> 149:156823d33999 24 return;
<> 149:156823d33999 25 }
<> 149:156823d33999 26 inited = 1;
<> 149:156823d33999 27
<> 149:156823d33999 28 /*---------------------------------------------------------------------------------------------------------*/
<> 149:156823d33999 29 /* Init System Clock */
<> 149:156823d33999 30 /*---------------------------------------------------------------------------------------------------------*/
<> 149:156823d33999 31 /* Unlock protected registers */
<> 149:156823d33999 32 SYS_UnlockReg();
<> 149:156823d33999 33
<> 149:156823d33999 34 /* Enable HIRC clock (Internal RC 22.1184MHz) */
<> 149:156823d33999 35 CLK_EnableXtalRC(CLK_PWRCTL_HIRCEN_Msk);
<> 149:156823d33999 36 /* Enable HXT clock (external XTAL 12MHz) */
<> 149:156823d33999 37 CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);
<> 149:156823d33999 38 /* Enable LIRC for lp_ticker */
<> 149:156823d33999 39 CLK_EnableXtalRC(CLK_PWRCTL_LIRCEN_Msk);
<> 149:156823d33999 40 /* Enable LXT for RTC */
<> 149:156823d33999 41 CLK_EnableXtalRC(CLK_PWRCTL_LXTEN_Msk);
<> 149:156823d33999 42
<> 149:156823d33999 43 /* Wait for HIRC clock ready */
<> 149:156823d33999 44 CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk);
<> 149:156823d33999 45 /* Wait for HXT clock ready */
<> 149:156823d33999 46 CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk);
<> 149:156823d33999 47 /* Wait for LIRC clock ready */
<> 149:156823d33999 48 CLK_WaitClockReady(CLK_STATUS_LIRCSTB_Msk);
<> 149:156823d33999 49 /* Wait for LXT clock ready */
<> 149:156823d33999 50 CLK_WaitClockReady(CLK_STATUS_LXTSTB_Msk);
<> 149:156823d33999 51
<> 149:156823d33999 52 /* Select HCLK clock source as HIRC and HCLK clock divider as 1 */
<> 149:156823d33999 53 CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HIRC, CLK_CLKDIV0_HCLK(1));
<> 149:156823d33999 54
<> 149:156823d33999 55 /* Set core clock as 72000000 from PLL */
<> 149:156823d33999 56 CLK_SetCoreClock(72000000);
<> 149:156823d33999 57
<> 149:156823d33999 58 #if DEVICE_ANALOGIN
<> 153:fa9ff456f731 59 /* Vref connect to internal */
<> 153:fa9ff456f731 60 SYS->VREFCTL = (SYS->VREFCTL & ~SYS_VREFCTL_VREFCTL_Msk) | SYS_VREFCTL_VREF_3_072V;
<> 149:156823d33999 61 #endif
<> 149:156823d33999 62
<> 149:156823d33999 63 /* Update System Core Clock */
<> 149:156823d33999 64 /* User can use SystemCoreClockUpdate() to calculate SystemCoreClock. */
<> 149:156823d33999 65 SystemCoreClockUpdate();
<> 149:156823d33999 66
<> 149:156823d33999 67 /* Lock protected registers */
<> 149:156823d33999 68 SYS_LockReg();
<> 149:156823d33999 69 }