378 lines
10 KiB
C
378 lines
10 KiB
C
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/********************************** (C) COPYRIGHT *******************************
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* File Name : core_riscv.h
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* Author : WCH
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* Version : V1.0.0
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* Date : 2021/06/06
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* Description : RISC-V Core Peripheral Access Layer Header File for CH32V20x
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* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
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* SPDX-License-Identifier: Apache-2.0
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*******************************************************************************/
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#ifndef __CORE_RISCV_H__
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#define __CORE_RISCV_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* IO definitions */
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#ifdef __cplusplus
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#define __I volatile /*!< defines 'read only' permissions */
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#else
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#define __I volatile const /*!< defines 'read only' permissions */
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#endif
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#define __O volatile /*!< defines 'write only' permissions */
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#define __IO volatile /*!< defines 'read / write' permissions */
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/* Standard Peripheral Library old types (maintained for legacy purpose) */
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typedef __I uint64_t vuc64; /* Read Only */
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typedef __I uint32_t vuc32; /* Read Only */
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typedef __I uint16_t vuc16; /* Read Only */
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typedef __I uint8_t vuc8; /* Read Only */
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typedef const uint64_t uc64; /* Read Only */
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typedef const uint32_t uc32; /* Read Only */
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typedef const uint16_t uc16; /* Read Only */
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typedef const uint8_t uc8; /* Read Only */
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typedef __I int64_t vsc64; /* Read Only */
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typedef __I int32_t vsc32; /* Read Only */
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typedef __I int16_t vsc16; /* Read Only */
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typedef __I int8_t vsc8; /* Read Only */
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typedef const int64_t sc64; /* Read Only */
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typedef const int32_t sc32; /* Read Only */
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typedef const int16_t sc16; /* Read Only */
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typedef const int8_t sc8; /* Read Only */
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typedef __IO uint64_t vu64;
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typedef __IO uint32_t vu32;
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typedef __IO uint16_t vu16;
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typedef __IO uint8_t vu8;
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typedef uint64_t u64;
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typedef uint32_t u32;
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typedef uint16_t u16;
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typedef uint8_t u8;
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typedef __IO int64_t vs64;
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typedef __IO int32_t vs32;
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typedef __IO int16_t vs16;
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typedef __IO int8_t vs8;
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typedef int64_t s64;
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typedef int32_t s32;
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typedef int16_t s16;
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typedef int8_t s8;
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typedef enum {NoREADY = 0, READY = !NoREADY} ErrorStatus;
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typedef enum {DISABLE = 0, ENABLE = !DISABLE} FunctionalState;
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typedef enum {RESET = 0, SET = !RESET} FlagStatus, ITStatus;
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#define RV_STATIC_INLINE static inline
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/* memory mapped structure for Program Fast Interrupt Controller (PFIC) */
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typedef struct{
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__I uint32_t ISR[8];
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__I uint32_t IPR[8];
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__IO uint32_t ITHRESDR;
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__IO uint32_t RESERVED;
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__IO uint32_t CFGR;
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__I uint32_t GISR;
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__IO uint8_t VTFIDR[4];
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uint8_t RESERVED0[12];
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__IO uint32_t VTFADDR[4];
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uint8_t RESERVED1[0x90];
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__O uint32_t IENR[8];
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uint8_t RESERVED2[0x60];
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__O uint32_t IRER[8];
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uint8_t RESERVED3[0x60];
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__O uint32_t IPSR[8];
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uint8_t RESERVED4[0x60];
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__O uint32_t IPRR[8];
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uint8_t RESERVED5[0x60];
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__IO uint32_t IACTR[8];
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uint8_t RESERVED6[0xE0];
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__IO uint8_t IPRIOR[256];
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uint8_t RESERVED7[0x810];
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__IO uint32_t SCTLR;
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}PFIC_Type;
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/* memory mapped structure for SysTick */
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typedef struct
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{
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__IO u32 CTLR;
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__IO u32 SR;
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__IO u64 CNT;
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__IO u64 CMP;
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}SysTick_Type;
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#define PFIC ((PFIC_Type *) 0xE000E000 )
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#define NVIC PFIC
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#define NVIC_KEY1 ((uint32_t)0xFA050000)
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#define NVIC_KEY2 ((uint32_t)0xBCAF0000)
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#define NVIC_KEY3 ((uint32_t)0xBEEF0000)
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#define SysTick ((SysTick_Type *) 0xE000F000)
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/*********************************************************************
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* @fn __enable_irq
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*
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* @brief Enable Global Interrupt
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*
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* @return none
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*/
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RV_STATIC_INLINE void __enable_irq()
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{
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__asm volatile ("csrw 0x800, %0" : : "r" (0x6088) );
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}
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/*********************************************************************
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* @fn __disable_irq
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*
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* @brief Disable Global Interrupt
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*
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* @return none
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*/
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RV_STATIC_INLINE void __disable_irq()
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{
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__asm volatile ("csrw 0x800, %0" : : "r" (0x6000) );
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}
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/*********************************************************************
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* @fn __NOP
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*
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* @brief nop
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*
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* @return none
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*/
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RV_STATIC_INLINE void __NOP()
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{
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__asm volatile ("nop");
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}
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/*********************************************************************
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* @fn NVIC_EnableIRQ
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*
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* @brief Disable Interrupt
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*
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* @param IRQn - Interrupt Numbers
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*
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* @return none
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*/
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RV_STATIC_INLINE void NVIC_EnableIRQ(IRQn_Type IRQn)
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{
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NVIC->IENR[((uint32_t)(IRQn) >> 5)] = (1 << ((uint32_t)(IRQn) & 0x1F));
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}
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/*********************************************************************
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* @fn NVIC_DisableIRQ
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*
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* @brief Disable Interrupt
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*
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* @param IRQn - Interrupt Numbers
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*
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* @return none
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*/
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RV_STATIC_INLINE void NVIC_DisableIRQ(IRQn_Type IRQn)
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{
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NVIC->IRER[((uint32_t)(IRQn) >> 5)] = (1 << ((uint32_t)(IRQn) & 0x1F));
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}
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/*********************************************************************
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* @fn NVIC_GetStatusIRQ
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*
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* @brief Get Interrupt Enable State
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*
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* @param IRQn - Interrupt Numbers
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*
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* @return 1 - 1: Interrupt Pending Enable
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* 0 - Interrupt Pending Disable
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*/
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RV_STATIC_INLINE uint32_t NVIC_GetStatusIRQ(IRQn_Type IRQn)
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{
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return((uint32_t) ((NVIC->ISR[(uint32_t)(IRQn) >> 5] & (1 << ((uint32_t)(IRQn) & 0x1F)))?1:0));
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}
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/*********************************************************************
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* @fn NVIC_GetPendingIRQ
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*
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* @brief Get Interrupt Pending State
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*
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* @param IRQn - Interrupt Numbers
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*
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* @return 1 - 1: Interrupt Pending Enable
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* 0 - Interrupt Pending Disable
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*/
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RV_STATIC_INLINE uint32_t NVIC_GetPendingIRQ(IRQn_Type IRQn)
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{
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return((uint32_t) ((NVIC->IPR[(uint32_t)(IRQn) >> 5] & (1 << ((uint32_t)(IRQn) & 0x1F)))?1:0));
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}
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/*********************************************************************
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* @fn NVIC_SetPendingIRQ
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*
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* @brief Set Interrupt Pending
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*
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* @param IRQn - Interrupt Numbers
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*
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* @return none
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*/
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RV_STATIC_INLINE void NVIC_SetPendingIRQ(IRQn_Type IRQn)
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{
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NVIC->IPSR[((uint32_t)(IRQn) >> 5)] = (1 << ((uint32_t)(IRQn) & 0x1F));
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}
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/*********************************************************************
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* @fn NVIC_ClearPendingIRQ
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*
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* @brief Clear Interrupt Pending
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*
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* @param IRQn - Interrupt Numbers
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*
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* @return none
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*/
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RV_STATIC_INLINE void NVIC_ClearPendingIRQ(IRQn_Type IRQn)
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{
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NVIC->IPRR[((uint32_t)(IRQn) >> 5)] = (1 << ((uint32_t)(IRQn) & 0x1F));
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}
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/*********************************************************************
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* @fn NVIC_GetActive
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*
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* @brief Get Interrupt Active State
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*
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* @param IRQn - Interrupt Numbers
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*
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* @return 1 - Interrupt Active
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* 0 - Interrupt No Active
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*/
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RV_STATIC_INLINE uint32_t NVIC_GetActive(IRQn_Type IRQn)
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{
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return((uint32_t)((NVIC->IACTR[(uint32_t)(IRQn) >> 5] & (1 << ((uint32_t)(IRQn) & 0x1F)))?1:0));
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}
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/*********************************************************************
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* @fn NVIC_SetPriority
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*
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* @brief Set Interrupt Priority
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*
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* @param IRQn - Interrupt Numbers
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* priority: bit7 - pre-emption priority
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* bit6-bit4 - subpriority
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*
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* @return none
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*/
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RV_STATIC_INLINE void NVIC_SetPriority(IRQn_Type IRQn, uint8_t priority)
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{
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NVIC->IPRIOR[(uint32_t)(IRQn)] = priority;
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}
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/*********************************************************************
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* @fn __WFI
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*
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* @brief Wait for Interrupt
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*
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* @return none
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*/
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__attribute__( ( always_inline ) ) RV_STATIC_INLINE void __WFI(void)
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{
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NVIC->SCTLR &= ~(1<<3); // wfi
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asm volatile ("wfi");
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}
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/*********************************************************************
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* @fn __WFE
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*
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* @brief Wait for Events
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*
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* @return none
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*/
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__attribute__( ( always_inline ) ) RV_STATIC_INLINE void __WFE(void)
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{
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uint32_t t;
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t = NVIC->SCTLR;
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NVIC->SCTLR |= (1<<3)|(1<<5); // (wfi->wfe)+(__sev)
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NVIC->SCTLR = (NVIC->SCTLR & ~(1<<5)) | ( t & (1<<5));
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asm volatile ("wfi");
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asm volatile ("wfi");
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}
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/*********************************************************************
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* @fn SetVTFIRQ
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*
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* @brief Set VTF Interrupt
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*
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* @param addr - VTF interrupt service function base address.
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* IRQn - Interrupt Numbers
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* num - VTF Interrupt Numbers
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* NewState - DISABLE or ENABLE
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*
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* @return none
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*/
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RV_STATIC_INLINE void SetVTFIRQ(uint32_t addr, IRQn_Type IRQn, uint8_t num, FunctionalState NewState){
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if(num > 3) return ;
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if (NewState != DISABLE)
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{
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NVIC->VTFIDR[num] = IRQn;
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NVIC->VTFADDR[num] = ((addr&0xFFFFFFFE)|0x1);
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}
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else{
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NVIC->VTFIDR[num] = IRQn;
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NVIC->VTFADDR[num] = ((addr&0xFFFFFFFE)&(~0x1));
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}
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}
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/*********************************************************************
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* @fn NVIC_SystemReset
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*
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* @brief Initiate a system reset request
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*
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* @return none
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*/
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RV_STATIC_INLINE void NVIC_SystemReset(void)
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{
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NVIC->CFGR = NVIC_KEY3|(1<<7);
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}
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/* Core_Exported_Functions */
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extern uint32_t __get_MSTATUS(void);
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extern void __set_MSTATUS(uint32_t value);
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extern uint32_t __get_MISA(void);
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extern void __set_MISA(uint32_t value);
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extern uint32_t __get_MIE(void);
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extern void __set_MIE(uint32_t value);
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extern uint32_t __get_MTVEC(void);
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extern void __set_MTVEC(uint32_t value);
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extern uint32_t __get_MSCRATCH(void);
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extern void __set_MSCRATCH(uint32_t value);
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extern uint32_t __get_MEPC(void);
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extern void __set_MEPC(uint32_t value);
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extern uint32_t __get_MCAUSE(void);
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extern void __set_MCAUSE(uint32_t value);
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extern uint32_t __get_MTVAL(void);
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extern void __set_MTVAL(uint32_t value);
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extern uint32_t __get_MVENDORID(void);
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extern uint32_t __get_MARCHID(void);
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extern uint32_t __get_MIMPID(void);
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extern uint32_t __get_MHARTID(void);
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extern uint32_t __get_SP(void);
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#ifdef __cplusplus
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}
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#endif
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#endif
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