详细说明：TMS320VC5402的DTMF发生器源代码 修改gen_dtmf.c的列频1477Hz为1457Hz文件列表: DTMF5410 ........\BOARD.H ........\Debug ........\Debug.lkf ........\Debug.lkv ........\DE_DTMF.C ........\DTMF.ASM ........\DTMF.MAP ........\DTMF0.DAT ........\DTMF5410.PAF ........\DTMF5410.PJT ........\DTMF_COF.C ........\EXT_CHIP.CMD ........\GEN_DTMF.C ........\MAIN.C ........\ONCHIP.CMD ........\uartasm_mcu.asm ........\VECTORS.ASM……