问答-
求助，gd32h7在sdram+tli刷屏时，出现seggerRTT输出异常现象
RT，当gd32h7在启用exmc驱动sdram、启用tli刷屏时，比如刷屏1024*600@rgb565，如果在启动tli之前，通过seggerRTT输出过任何内容，比如调试信息、启动信息、系统状态之类，哪怕只是无意义数据。在启动tli之后，哪怕是再也不调用任何seggerRTT相关代码，也能在seggerRTT的rtt-viewer中看到之前发送的内容被自动、重复、偶发性、周期不定、长度不定地反复发送。这个过程没有任何代码执行seggerRTT相关函数，是seggerRTT自发地。在关掉tli后，问题消失；在出现问题后，用一个定时器比如10s后关闭tli，问题在10s后再也不出现；裸机、rtthread-nano、freeRTOS三种环境都能看到这个现象：只要启动tli开始刷屏，那么seggerRTT输出就会非常混乱。比如，裸机代码：“intmain(void){sys_cache_enable();/*使能CPUcache*/SEGGER_RTT_printf(0,"RTTTEST0000:0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz\r\n");SEGGER_RTT_printf(0,"RTTTEST0001:0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz\r\n");SEGGER_RTT_printf(0,"RTTTEST0002:0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz\r\n");SEGGER_RTT_printf(0,"RTTTEST0003:0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz\r\n");SEGGER_RTT_printf(0,"RTTTEST0004:0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz\r\n");SEGGER_RTT_printf(0,"RTTTEST0005:0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz\r\n");SEGGER_RTT_printf(0,"RTTTEST0006:0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz\r\n");SEGGER_RTT_printf(0,"RTTTEST0007:0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz\r\n");SEGGER_RTT_printf(0,"RTTTEST0008:0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz\r\n");SEGGER_RTT_printf(0,"RTT
2026-09-21 0
