文件名称:FM17550_READER_MCU_SPI
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IC卡读写卡程序，M50 M70卡 Type A， TypeB, TypeF A，B密钥设置，卡内信息读取写入，充值卡功能(IC card reading and writing card program, M50 M70 card Type A, TypeB, TypeF A, B key setting, card information read and write, recharge card function)
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