Restore timing + switch to polling + disable CPU interrupts (IE=0)

2026-06-26 01:01:48 +08:00
parent 115466353d
commit a2b496ca8d
3 changed files with 32 additions and 61 deletions
--- a/sdk/software/bsp/env/start.S
+++ b/sdk/software/bsp/env/start.S
@@ -142,12 +142,12 @@ _start:
    li.w        t1, 0x1
    csrwr       t1, csr_ticlr

-    #enable int 
+    #disable int (IE=0, all polling-mode)
    li.w        t1, 0x4
 #ifdef RTThread
    csrxchg     zero, t1, csr_crmd
 #else
-    csrxchg     t1, t1, csr_crmd
+    csrxchg     zero, t1, csr_crmd
 #endif
    csrwr       zero, csr_prmd
    li.w        t1, 0x1fff