F28377D 内部DAC模块使用问题

各路大神，求指教

人工置顶，求答案。

参考一下配置

static void InitCmpss1(void)

{

 EALLOW;

 // Set up CMPSS1 control registers.

 Cmpss1Regs.DACHVALS.bit.DACVAL = 0;

 Cmpss1Regs.COMPCTL.bit.COMPDACE = 1; // Enable CMPSS

 Cmpss1Regs.COMPCTL.bit.COMPHSOURCE = NEGIN_DAC; // NEG signal comes from DAC

 Cmpss1Regs.COMPDACCTL.bit.SELREF = REFERENCE_VDDA; // Use VDDA as the reference for DAC

 Cmpss1Regs.COMPDACCTL.bit.DACSOURCE = DACSOURCE_DACHVALS; // Select DACHVALA source as the DACHVALS shadow register

 // Set up hysteresis control register.

 Cmpss1Regs.COMPHYSCTL.bit.COMPHYS = COMPHYS_NONE;

 // Configure CTRIPOUT path. Asynch output feeds CTRIPH and CTRIPOUTH.

 Cmpss1Regs.COMPCTL.bit.CTRIPHSEL = CTRIP_ASYNCH;

 Cmpss1Regs.COMPCTL.bit.CTRIPOUTHSEL = CTRIP_ASYNCH;

 // Configure CTRIPOUTH output pin.

 OutputXbarRegs.OUTPUT4MUX0TO15CFG.bit.Mux0 = 0; // Configure XTRIPOUT4 to be CTRIPOUT1H

 OutputXbarRegs.OUTPUT4MUXENABLE.bit.Mux0 = 1; // Enable XTRIPOUT4 Mux for Output

 EPwmXbarRegs.TRIP4MUX0TO15CFG.bit.Mux0 = 0; // Configure TRIP4 for ePWM to be CTRIPOUT1H

 EPwmXbarRegs.TRIP4MUXENABLE.bit.Mux0 = 1; // Enable MUX

 EDIS;

}

参考输出设置吗？

这个片子，你从哪里搞到的啊？现在我看还买不到啊。我也很感兴趣

是否用过CMPSS4和CMPSS5？我测试了几块芯片，同样的配置CMPSS1，2，6，7，8都正常，但CMPSS4和5没有输出，输出寄存器值也没有变化。