libs/rt-thread
libs
/
rt-thread
4
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
rt-thread/bsp/wch/risc-v/Libraries/ch56x_drivers/isr_sp.h

32 lines
807 B
C
Raw Normal View History

WCH CH569W-R0-1v0 evt board bsp port, first version (#6167) WCH CH569W-R0-1v0 evt board bsp port, first version dev/test under Ubuntu 20.04 toolchain from MounRiver_Studio_Community_Linux_x64_V120 tested drivers : SysTick, gpio, gpio interrupt, uart1 (RX interrupt, TX polling) libcpu/risc-v/SConscript : group includes rtconfig.CPU only if folder exists libcpu/risc-v/common/cpuport.c/rt_hw_context_switch_interrupt() : make it RT_WEAK for customization
2022-07-30 14:10:51 +08:00
/*
[RTduino][ch32v208w-r0]ch32v208w-r0适配RTduino (#6917)
2023-02-09 12:01:20 +08:00
* Copyright (c) 2006-2023, RT-Thread Development Team
WCH CH569W-R0-1v0 evt board bsp port, first version (#6167) WCH CH569W-R0-1v0 evt board bsp port, first version dev/test under Ubuntu 20.04 toolchain from MounRiver_Studio_Community_Linux_x64_V120 tested drivers : SysTick, gpio, gpio interrupt, uart1 (RX interrupt, TX polling) libcpu/risc-v/SConscript : group includes rtconfig.CPU only if folder exists libcpu/risc-v/common/cpuport.c/rt_hw_context_switch_interrupt() : make it RT_WEAK for customization
2022-07-30 14:10:51 +08:00
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-07-27 Emuzit first version
*/
#ifndef __ISR_SP_H__
#define __ISR_SP_H__
/* usrstack is no more in use right after rt_system_scheduler_start().
* It is also the time global interrupt is enabled.
*/
#define isr_sp_enter() \
asm("la t0, rt_interrupt_nest"); \
asm("bnez t0, 1f"); \
asm("la t0, _eusrstack"); \
asm("sw sp, -4(t0)"); \
asm("addi sp, t0, -4"); \
asm("1:")
#define isr_sp_leave() \
asm("la t0, rt_interrupt_nest"); \
asm("bnez t0, 1f"); \
asm("la t0, _eusrstack"); \
asm("lw sp, -4(t0)"); \
asm("1:")
#endif