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  • hi: thanks ,i solve it. Using Segger's own linker script will automatically link __SEGGER_RTL_vfprintf and __SEGGER_RTL_vfscanf. But I use the linker written by GNU format which cannot automatically link __SEGGER_RTL_vfprintf and __SEGGER_RTL_vfscanf.

  • hi: thank your reply. you,re right. According to the documentation, SEGGER_RTT_printf can be used. But there,re two question。 One problem is that the current SEGGER_RTT_printf formatting output has too many restrictions (such as outputting long long), and the application is not compatible with the previous one as below. /********************************************************************* * * SEGGER_RTT_printf * * Function description * Stores a formatted string in SEGGER RTT control block. * T…

  • dear: now i am use the segger studio of v7.3. the gnu linker is used for cortex-m33 but this is some error like "prinops.c:(.text.libc.vfprintf_l+0x5c): undefined reference to `__SEGGER_RTL_vfprintf'". and segger linker is ok。 how to solver this problem for gnu linker ?