From ce84f5c75703cffab68fa34ff587823a5047f52b Mon Sep 17 00:00:00 2001
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 <1425962791@qq.com>
Date: Sun, 15 Mar 2026 10:35:03 +0800
Subject: [PATCH] =?UTF-8?q?=E5=8A=A0=E5=85=A5=E8=AE=BE=E7=BD=AE=E6=97=8B?=
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---
 software/Power_Pico/BSP/LCD/lcd_init.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/software/Power_Pico/BSP/LCD/lcd_init.c b/software/Power_Pico/BSP/LCD/lcd_init.c
index 5d9c77d..599c4bd 100644
--- a/software/Power_Pico/BSP/LCD/lcd_init.c
+++ b/software/Power_Pico/BSP/LCD/lcd_init.c
@@ -185,6 +185,10 @@ void LCD_ST7789_SleepOut(void)
 	返回值：  无
 ******************************************************************************/
 void LCD_SetRotation(uint16_t rotation) {
+	// 确保SPI总线空闲，避免在发送命令时发生冲突（因为DMA是16bit的）
+	while (HAL_SPI_GetState(&hspi2) != HAL_SPI_STATE_READY) {
+        __NOP(); // 只是为了防止编译器过度优化空循环
+    }
 	LCD_WR_REG(0x36); // Memory Data Access Control
 	switch(rotation) {
 		case 0: