106 lines
4.4 KiB
C
106 lines
4.4 KiB
C
|
/********************************** (C) COPYRIGHT *******************************
|
||
|
|
* File Name : ch32v30x_misc.c
|
||
|
|
* Author : WCH
|
||
|
|
* Version : V1.0.0
|
||
|
|
* Date : 2024/03/06
|
||
|
|
* Description : This file provides all the miscellaneous firmware functions .
|
||
|
|
*********************************************************************************
|
||
|
|
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
|
||
|
|
* Attention: This software (modified or not) and binary are used for
|
||
|
|
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
|
||
|
|
*******************************************************************************/
|
||
|
|
#include "ch32v30x_misc.h"
|
||
|
|
|
||
|
|
__IO uint32_t NVIC_Priority_Group = 0;
|
||
|
|
|
||
|
|
/*********************************************************************
|
||
|
|
* @fn NVIC_PriorityGroupConfig
|
||
|
|
*
|
||
|
|
* @brief Configures the priority grouping - pre-emption priority and subpriority.
|
||
|
|
*
|
||
|
|
* @param NVIC_PriorityGroup - specifies the priority grouping bits length.
|
||
|
|
* NVIC_PriorityGroup_0 - 0 bits for pre-emption priority
|
||
|
|
* 3 bits for subpriority
|
||
|
|
* NVIC_PriorityGroup_1 - 1 bits for pre-emption priority
|
||
|
|
* 2 bits for subpriority
|
||
|
|
* NVIC_PriorityGroup_2 - 2 bits for pre-emption priority
|
||
|
|
* 1 bits for subpriority
|
||
|
|
* NVIC_PriorityGroup_3 - 3 bits for pre-emption priority
|
||
|
|
* 0 bits for subpriority
|
||
|
|
*
|
||
|
|
* @return none
|
||
|
|
*/
|
||
|
|
void NVIC_PriorityGroupConfig(uint32_t NVIC_PriorityGroup)
|
||
|
|
{
|
||
|
|
NVIC_Priority_Group = NVIC_PriorityGroup;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*********************************************************************
|
||
|
|
* @fn NVIC_Init
|
||
|
|
*
|
||
|
|
* @brief Initializes the NVIC peripheral according to the specified parameters in
|
||
|
|
* the NVIC_InitStruct.
|
||
|
|
*
|
||
|
|
* @param NVIC_InitStruct - pointer to a NVIC_InitTypeDef structure that contains the
|
||
|
|
* configuration information for the specified NVIC peripheral.
|
||
|
|
* interrupt nesting disable(CSR-0x804 bit1 = 0)
|
||
|
|
* NVIC_IRQChannelPreemptionPriority - range is 0.
|
||
|
|
* NVIC_IRQChannelSubPriority - range from 0 to 7.
|
||
|
|
*
|
||
|
|
* interrupt nesting enable-2 Level(CSR-0x804 bit1 = 1 bit[3:2] = 1)
|
||
|
|
* NVIC_IRQChannelPreemptionPriority - range from 0 to 1.
|
||
|
|
* NVIC_IRQChannelSubPriority - range from 0 to 3.
|
||
|
|
*
|
||
|
|
* interrupt nesting enable-4 Level(CSR-0x804 bit1 = 1 bit[3:2] = 2)
|
||
|
|
* NVIC_IRQChannelPreemptionPriority - range from 0 to 3.
|
||
|
|
* NVIC_IRQChannelSubPriority - range from 0 to 1.
|
||
|
|
*
|
||
|
|
* interrupt nesting enable-8 Level(CSR-0x804 bit1 = 1 bit[3:2] = 3)
|
||
|
|
* NVIC_IRQChannelPreemptionPriority - range from 0 to 7.
|
||
|
|
* NVIC_IRQChannelSubPriority - range range is 0.
|
||
|
|
*
|
||
|
|
* @return none
|
||
|
|
*/
|
||
|
|
void NVIC_Init(NVIC_InitTypeDef *NVIC_InitStruct)
|
||
|
|
{
|
||
|
|
#if (INTSYSCR_INEST == INTSYSCR_INEST_NoEN)
|
||
|
|
if(NVIC_Priority_Group == NVIC_PriorityGroup_0)
|
||
|
|
{
|
||
|
|
NVIC_SetPriority(NVIC_InitStruct->NVIC_IRQChannel, NVIC_InitStruct->NVIC_IRQChannelSubPriority << 4);
|
||
|
|
}
|
||
|
|
#elif (INTSYSCR_INEST == INTSYSCR_INEST_EN_2Level)
|
||
|
|
if(NVIC_Priority_Group == NVIC_PriorityGroup_1)
|
||
|
|
{
|
||
|
|
if(NVIC_InitStruct->NVIC_IRQChannelPreemptionPriority < 2)
|
||
|
|
{
|
||
|
|
NVIC_SetPriority(NVIC_InitStruct->NVIC_IRQChannel, (NVIC_InitStruct->NVIC_IRQChannelPreemptionPriority << 7) | (NVIC_InitStruct->NVIC_IRQChannelSubPriority << 5));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#elif (INTSYSCR_INEST == INTSYSCR_INEST_EN_4Level)
|
||
|
|
if(NVIC_Priority_Group == NVIC_PriorityGroup_2)
|
||
|
|
{
|
||
|
|
if(NVIC_InitStruct->NVIC_IRQChannelPreemptionPriority < 4)
|
||
|
|
{
|
||
|
|
NVIC_SetPriority(NVIC_InitStruct->NVIC_IRQChannel, (NVIC_InitStruct->NVIC_IRQChannelPreemptionPriority << 6) | (NVIC_InitStruct->NVIC_IRQChannelSubPriority << 5));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#elif (INTSYSCR_INEST == INTSYSCR_INEST_EN_8Level)
|
||
|
|
if(NVIC_Priority_Group == NVIC_PriorityGroup_3)
|
||
|
|
{
|
||
|
|
if(NVIC_InitStruct->NVIC_IRQChannelPreemptionPriority < 8)
|
||
|
|
{
|
||
|
|
NVIC_SetPriority(NVIC_InitStruct->NVIC_IRQChannel, (NVIC_InitStruct->NVIC_IRQChannelPreemptionPriority << 5) );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
if(NVIC_InitStruct->NVIC_IRQChannelCmd != DISABLE)
|
||
|
|
{
|
||
|
|
NVIC_EnableIRQ(NVIC_InitStruct->NVIC_IRQChannel);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
NVIC_DisableIRQ(NVIC_InitStruct->NVIC_IRQChannel);
|
||
|
|
}
|
||
|
|
}
|