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处理中断服务

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This commit is contained in:
Ruige Lee
2025-01-15 17:58:12 +08:00
parent 8236d45154
commit f63e3a831b
5 changed files with 173 additions and 66 deletions
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60
tb/sw/src/MstMain.c
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@@ -5,27 +5,44 @@
// #include "timer.h"
#include "tl2cdr.h"
volatile uint32_t *plic_priority_3 = (uint32_t*)( 0xc000000U + 0X000004 * 3);
volatile uint32_t *plic_priority_4 = (uint32_t*)( 0xc000000U + 0X000004 * 4);
volatile uint32_t *plic_priority_5 = (uint32_t*)( 0xc000000U + 0X000004 * 5);
volatile uint32_t *plic_priority_6 = (uint32_t*)( 0xc000000U + 0X000004 * 6);
volatile uint32_t *plic_pending_0_31 = (uint32_t*)( 0xc000000U + 0X001000 );
volatile uint32_t *plic_enable_0_31 = (uint32_t*)( 0xc000000U + 0X002000 );
volatile uint32_t *plic_threshold_0 = (uint32_t*)( 0xc000000U + 0X200000 );
volatile uint32_t *plic_claim = (uint32_t*)( 0xc000000U + 0X200004 );
uint32_t flag_intTxEnd = 0;
uint32_t flag_intRxError = 0;
uint32_t flag_intRxStart = 0;
uint32_t flag_intRxEnd = 0;
volatile uint32_t flag_intTxEnd = 0;
volatile uint32_t flag_intRxError = 0;
volatile uint32_t flag_intRxStart = 0;
volatile uint32_t flag_intRxEnd = 0;
void trap_entry(){
if( *plic_claim == 3 ){
void plic_handle(){
// 从 PLIC 中获取中断源 ID
uint32_t claim = *plic_claim;
if( claim == 3 ){
flag_intTxEnd = 1;
} else if( *plic_claim == 4 ){
} else if( claim == 4 ){
flag_intRxError = 1;
} else if( *plic_claim == 5 ){
} else if( claim == 5 ){
flag_intRxStart = 1;
} else if( *plic_claim == 6 ){
} else if( claim == 6 ){
flag_intRxEnd = 1;
}
// 通知 PLIC 完成中断处理
*plic_claim = claim;
return;
}
@@ -62,6 +79,11 @@ void main()
uint32_t led = 0;
*plic_enable_0_31 = 1 << 3 | 1 << 4 | 1 << 5 | 1 << 6;
*plic_priority_3 = 1;
*plic_priority_4 = 1;
*plic_priority_5 = 1;
*plic_priority_6 = 1;
*plic_threshold_0 = 0;
*cdr_softReset = 1; //复位脉冲
@@ -69,16 +91,16 @@ void main()
register uint32_t flag;
asm volatile ( //timer 2s
"1:\n"
"rdcycle %0\n"
// "srli %0, %0, 12\n"
"srli %0, %0, 27\n"
// "srli %0, %0, 26\n"
"andi %0, %0, 0x1\n"
"beqz %0, 1b\n"
:"+r"(flag)
);
// asm volatile ( //timer 2s
// "1:\n"
// "rdcycle %0\n"
// // "srli %0, %0, 12\n"
// "srli %0, %0, 27\n"
// // "srli %0, %0, 26\n"
// "andi %0, %0, 0x1\n"
// "beqz %0, 1b\n"
// :"+r"(flag)
// );
// if( led ){
// *WriteGpio = 0xFFFFFFFF;