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/*!
* @file apm32f10x_misc.c
*
* @brief This file provides all the miscellaneous firmware functions.
* Include NVIC,SystemTick and Power management.
*
* @version V1.0.4
*
* @date 2022-12-01
*
* @attention
*
* Copyright (C) 2020-2022 Geehy Semiconductor
*
* You may not use this file except in compliance with the
* GEEHY COPYRIGHT NOTICE (GEEHY SOFTWARE PACKAGE LICENSE).
*
* The program is only for reference, which is distributed in the hope
* that it will be useful and instructional for customers to develop
* their software. Unless required by applicable law or agreed to in
* writing, the program is distributed on an "AS IS" BASIS, WITHOUT
* ANY WARRANTY OR CONDITIONS OF ANY KIND, either express or implied.
* See the GEEHY SOFTWARE PACKAGE LICENSE for the governing permissions
* and limitations under the License.
*/
/* Includes */
#include "apm32f10x_misc.h"
/** @addtogroup APM32F10x_StdPeriphDriver
@{
*/
/** @addtogroup MISC_Driver MISC Driver
@{
*/
/** @defgroup MISC_Macros Macros
@{
*/
#define AIRCR_VECTKEY_MASK ((uint32_t)0x05FA0000)
/**@} end of group MISC_Macros*/
/** @defgroup MISC_Functions Functions
@{
*/
/*!
* @brief Configures the priority grouping: pre-emption priority and subpriority.
*
* @param priorityGroup : specifies the priority grouping bits length.
* This parameter can be one of the following values:
* @arg NVIC_PRIORITY_GROUP_0
* @arg NVIC_PRIORITY_GROUP_1
* @arg NVIC_PRIORITY_GROUP_2
* @arg NVIC_PRIORITY_GROUP_3
* @arg NVIC_PRIORITY_GROUP_4
*
* @retval None
*/
void NVIC_ConfigPriorityGroup(NVIC_PRIORITY_GROUP_T priorityGroup)
{
SCB->AIRCR = AIRCR_VECTKEY_MASK | priorityGroup;
}
/*!
* @brief Enable NVIC request
*
* @param irq: the NVIC interrupt request, detailed in IRQn_Type
* For the complete APM32 Devices IRQ Channels list,please refer to apm32f10x.h file
*
* @param preemptionPriority: the pre-emption priority needed to set
*
* @param subPriority: the subpriority needed to set
*
* @retval None
*/
void NVIC_EnableIRQRequest(IRQn_Type irq, uint8_t preemptionPriority, uint8_t subPriority)
{
uint32_t tempPriority, tempPrePri, tempSubPri;
uint32_t priorityGrp;
/* Get priority group */
priorityGrp = (SCB->AIRCR) & (uint32_t)0x700U;
/* get pre-emption priority and subpriority */
switch (priorityGrp)
{
case NVIC_PRIORITY_GROUP_0:
tempPrePri = 0;
tempSubPri = 4;
break;
case NVIC_PRIORITY_GROUP_1:
tempPrePri = 1;
tempSubPri = 3;
break;
case NVIC_PRIORITY_GROUP_2:
tempPrePri = 2;
tempSubPri = 2;
break;
case NVIC_PRIORITY_GROUP_3:
tempPrePri = 3;
tempSubPri = 1;
break;
case NVIC_PRIORITY_GROUP_4:
tempPrePri = 4;
tempSubPri = 0;
break;
default:
NVIC_ConfigPriorityGroup(NVIC_PRIORITY_GROUP_0);
tempPrePri = 0;
tempSubPri = 4;
break;
}
tempPrePri = 4 - tempPrePri;
tempSubPri = 4 - tempSubPri;
tempPriority = preemptionPriority << tempPrePri;
tempPriority |= subPriority & (0x0f >> tempSubPri);
tempPriority <<= 4;
NVIC->IP[irq] = (uint8_t)tempPriority;
/* enable the selected IRQ */
NVIC->ISER[irq >> 0x05U] = (uint32_t)0x01U << (irq & (uint8_t)0x1FU);
}
/*!
* @brief Disable NVIC request
*
* @param irq: the NVIC interrupt request, detailed in IRQn_Type
*
* @retval None
*/
void NVIC_DisableIRQRequest(IRQn_Type irq)
{
/* disable the selected IRQ.*/
NVIC->ICER[irq >> 0x05U] = (uint32_t)0x01U << (irq & (uint8_t)0x1FU);
}
/*!
* @brief Configs the vector table location and Offset.
*
* @param vectTab: specifies if the vector table is in RAM or FLASH memory
* This parameter can be one of the following values:
* @arg NVIC_VECT_TAB_RAM
* @arg NVIC_VECT_TAB_FLASH
*
* @param Offset Vector Table base offset field. This value must be a multiple of 0x200
*
* @retval None
*/
void NVIC_ConfigVectorTable(NVIC_VECT_TAB_T vectTab, uint32_t offset)
{
SCB->VTOR = vectTab | (offset & (uint32_t)0x1FFFFF80);
}
/*!
* @brief set the state of the low power mode
*
* @param lowPowerMode: the low power mode state
* This parameter can be one of the following values:
* @arg NVIC_LOWPOWER_SEVONPEND
* @arg NVIC_LOWPOWER_SLEEPDEEP
* @arg NVIC_LOWPOWER_SLEEPONEXIT
*
* @retval None
*/
void NVIC_SetSystemLowPower(NVIC_LOWPOWER_T lowPowerMode)
{
SCB->SCR |= lowPowerMode;
}
/*!
* @brief reset the state of the low power mode
*
* @param lowPowerMode: the low power mode state
* This parameter can be one of the following values:
* @arg NVIC_LOWPOWER_SEVONPEND
* @arg NVIC_LOWPOWER_SLEEPDEEP
* @arg NVIC_LOWPOWER_SLEEPONEXIT
*
* @retval None
*/
void NVIC_ResetystemLowPower(NVIC_LOWPOWER_T lowPowerMode)
{
SCB->SCR &= (uint32_t)(~(uint32_t)lowPowerMode);
}
/*!
* @brief Configures the SysTick clock source
*
* @param clkSource: specifies the SysTick clock source
* This parameter can be one of the following values:
* @arg SYSTICK_CLK_SOURCE_HCLK_DIV8: AHB clock divided by 8 selected as SysTick clock source.
* @arg SYSTICK_CLK_SOURCE_HCLK: AHB clock selected as SysTick clock source.
*
* @retval None
*/
void SysTick_ConfigCLKSource(SYSTICK_CLK_SOURCE_T clkSource)
{
if (clkSource == SYSTICK_CLK_SOURCE_HCLK)
{
SysTick->CTRL |= (uint32_t)BIT2;
}
else
{
SysTick->CTRL &= (uint32_t)(~BIT2);
}
}
/**@} end of group MISC_Functions*/
/**@} end of group MISC_Driver */
/**@} end of group APM32F10x_StdPeriphDriver*/
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