From b62ac586501c43c61f21c0fca67dca437ff3a9dc Mon Sep 17 00:00:00 2001
From: UMRnInside <30196401+UMRnInside@users.noreply.github.com>
Date: Sun, 26 Apr 2026 20:35:54 +0800
Subject: Fix CH32V103 hardfault on startup

---
 hw/bsp/ch32v10x/family.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/hw/bsp/ch32v10x/family.c b/hw/bsp/ch32v10x/family.c
index 72dae7086..9943bf856 100644
--- a/hw/bsp/ch32v10x/family.c
+++ b/hw/bsp/ch32v10x/family.c
@@ -67,7 +67,10 @@ uint32_t tusb_time_millis_api(void) {
 #endif
 
 void board_init(void) {
-  __disable_irq();
+  /* __disable_irq() in CH32V103 EVT attempts to call
+   * `csrc mstatus, 0x88` in U-mode, which is allowed ONLY in M-mode.
+   * Disable this to avoid hard-fault. */
+  //__disable_irq();
 
 #if CFG_TUSB_OS == OPT_OS_NONE
   SysTick_Config(SystemCoreClock / 1000);
@@ -123,7 +126,7 @@ void board_init(void) {
   USART_Init(USART1, &usart);
   USART_Cmd(USART1, ENABLE);
 
-  __enable_irq();
+  //__enable_irq();
 
   board_led_write(true);
 }
-- 
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