iar中的scanf和printf

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默认情况下，iar中的scanf和printf默认都是最小模式，只有最简单功能，稍复杂些就无法正常使用。可以通过general options->Library options切换模式付不同模式下代码大小 tiny模式： SEGMENT SPACE START ADDRESS END ADDRESS SIZE TYPE ALIGN======= ===== ============= =========== ==== ==== =====ICODE 00000000 - 00000133 134 rel 2CODE 00000134 - 00002B57 2A24 rel 2INITTAB 00002B58 - 00002B63 C rel 2DATA_ID 00002B64 dse 0DATA_C 00002B64 - 00002BBF 5C rel 2DATA_I 00200000 dse 0DATA_Z 00200000 - 002003AF 3B0 rel 2HEAP 002003B0 - 002043AF 4000 rel 2INTRAMEND_REMAP 00210000 rel 2 **************************************** * * * END OF CROSS REFERENCE * * * **************************************** 11 096 bytes of CODE memory 17 328 bytes of DATA memory 104 bytes of CONST memory full模式： SEGMENT SPACE START ADDRESS END ADDRESS SIZE TYPE ALIGN======= ===== ============= =========== ==== ==== =====ICODE 00000000 - 00000133 134 rel 2CODE 00000134 - 00003A43 3910 rel 2INITTAB 00003A44 - 00003A4F C rel 2DATA_ID 00003A50 dse 0DATA_C 00003A50 - 00003AE3 94 rel 2DATA_I 00200000 dse 0DATA_Z 00200000 - 002003AF 3B0 rel 2HEAP 002003B0 - 002043AF 4000 rel 2INTRAMEND_REMAP 00210000 rel 2 **************************************** * * * END OF CROSS REFERENCE * * * **************************************** 14 916 bytes of CODE memory 17 328 bytes of DATA memory 160 bytes of CONST memory