具体的错误信息：DataProcess.c:115:(.text.OnceDataProcess+0x64): relocation truncated to fit: R_RISCV_RVC_JUMP against symbol `printf' defined in .text.printf section in c:/mounriver/mounriver_studio/toolchain/risc-v embedded gcc/bin/../lib/gcc/riscv-none-embed/8.2.0/../../../../riscv-none-embed/lib/rv32imac/ilp32\libprintf.a(wchprintf.o)

您好，链接时部分符号超出跳转范围，您可以按照下图添加尝试一下。