RISC中关中断应该用原子操作，避免多任务环境造成错误

2026-05-22 21:24:45 +08:00
parent ab11821c0c
commit f957224afd
4 changed files with 14 additions and 4 deletions
@@ -20,6 +20,15 @@ uint32_t RISCV_get_MSTATUS(void)
    return (result);
 }

+uint32_t RISCV_get_set_MSTATUS(uint32_t value){
+    uint32_t result;
+    __ASM volatile("csrrw %0, mstatus, %1"
+        : "=r"(result)
+        :"r"(value)
+        :"memory");
+    return (result);
+}
+
 /*********************************************************************
 * @fn      RISCV_set_MSTATUS
 *