bstanwell/ch32v20x-examples
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qiyongshuang
2024-11-11 14:32:11 +08:00
parent c4c38f507e
commit 961943f623
452 changed files with 9316 additions and 862 deletions
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EVT/EXAM/RCC/HSE_CLK/User/system_ch32v20x.c
+12 -5
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@@ -6,9 +6,11 @@
* Description : CH32V20x Device Peripheral Access Layer System Source File.
* For HSE = 32Mhz (CH32V208x/CH32V203RBT6)
* For HSE = 8Mhz (other CH32V203x)
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* SPDX-License-Identifier: Apache-2.0
*********************************************************************************/
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#include "ch32v20x.h"
/*
@@ -75,14 +77,19 @@ void SystemCoreClockUpdate(void) {
if (pllsource == 0x00) {
SystemCoreClock = (HSI_VALUE >> 1) * pllmull;
} else {
if ((RCC->CFGR0 & RCC_PLLXTPRE) != (uint32_t) RESET) {
}
else
{
if ((RCC->CFGR0 & RCC_PLLXTPRE) != (uint32_t) RESET)
{
#if defined (CH32V20x_D8) || defined (CH32V20x_D8W)
SystemCoreClock = ((HSE_VALUE >> 2) >> 1) * pllmull;
#else
SystemCoreClock = (HSE_VALUE >> 1) * pllmull;
#endif
} else {
}
else
{
#if defined (CH32V20x_D8) || defined (CH32V20x_D8W)
SystemCoreClock = (HSE_VALUE >> 2) * pllmull;
#else