外部晶振无法使用

我是用的28027芯片，时钟配置如下：

CLK_disableOsc1(clkHandle);	
	
CLK_setOscSrc(clkHandle,CLK_OscSrc_External);  
	
CLK_disableClkIn(clkHandle);

CLK_enableCrystalOsc(clkHandle);
	
CLK_disableOsc2(clkHandle);

PLL_setup(pllHandle, PLL_Multiplier_6, PLL_DivideSelect_ClkIn_by_2);

PLL_setup函数如下：

void PLL_setup(PLL_Handle pllHandle, const PLL_Multiplier_e clkMult, const PLL_DivideSelect_e divSelect)  
{if(PLL_getClkStatus(pllHandle) == PLL_ClkStatus_Missing){// The clock is missing so we cannot setup the PLL correctlyasm(" ESTOP0");}// Set divider to max value (/4) for safetyPLL_setDivider(pllHandle, PLL_DivideSelect_ClkIn_by_4);// Set the desired multiplierPLL_setMultiplier(pllHandle, clkMult);while(PLL_getLockStatus(pllHandle) != PLL_LockStatus_Done){}// Set the desired dividerPLL_setDivider(pllHandle, divSelect);

} // end of PLL_setup() function

使用外部20M晶振，按照手册配置的外部电路；编译通过，但是烧写程序时，烧写进去了，但是仿真开始，就会执行到下面的语句，仿真停止

 if(PLL_getClkStatus(pllHandle) == PLL_ClkStatus_Missing){// The clock is missing so we cannot setup the PLL correctlyasm(" ESTOP0");}

mangui zhang：

外部晶体应该是没启振  上电后用万用表测晶体引脚  有个1v左右电压就说明工作了

我是用的28027芯片，时钟配置如下：

CLK_disableOsc1(clkHandle);	
	
CLK_setOscSrc(clkHandle,CLK_OscSrc_External);  
	
CLK_disableClkIn(clkHandle);

CLK_enableCrystalOsc(clkHandle);
	
CLK_disableOsc2(clkHandle);

PLL_setup(pllHandle, PLL_Multiplier_6, PLL_DivideSelect_ClkIn_by_2);

PLL_setup函数如下：

void PLL_setup(PLL_Handle pllHandle, const PLL_Multiplier_e clkMult, const PLL_DivideSelect_e divSelect)  
{if(PLL_getClkStatus(pllHandle) == PLL_ClkStatus_Missing){// The clock is missing so we cannot setup the PLL correctlyasm(" ESTOP0");}// Set divider to max value (/4) for safetyPLL_setDivider(pllHandle, PLL_DivideSelect_ClkIn_by_4);// Set the desired multiplierPLL_setMultiplier(pllHandle, clkMult);while(PLL_getLockStatus(pllHandle) != PLL_LockStatus_Done){}// Set the desired dividerPLL_setDivider(pllHandle, divSelect);

} // end of PLL_setup() function

使用外部20M晶振，按照手册配置的外部电路；编译通过，但是烧写程序时，烧写进去了，但是仿真开始，就会执行到下面的语句，仿真停止

 if(PLL_getClkStatus(pllHandle) == PLL_ClkStatus_Missing){// The clock is missing so we cannot setup the PLL correctlyasm(" ESTOP0");}

Seven Han：

检查下是不是没焊接好，或更换下晶振外部电容。

我是用的28027芯片，时钟配置如下：

CLK_disableOsc1(clkHandle);	
	
CLK_setOscSrc(clkHandle,CLK_OscSrc_External);  
	
CLK_disableClkIn(clkHandle);

CLK_enableCrystalOsc(clkHandle);
	
CLK_disableOsc2(clkHandle);

PLL_setup(pllHandle, PLL_Multiplier_6, PLL_DivideSelect_ClkIn_by_2);

PLL_setup函数如下：

void PLL_setup(PLL_Handle pllHandle, const PLL_Multiplier_e clkMult, const PLL_DivideSelect_e divSelect)  
{if(PLL_getClkStatus(pllHandle) == PLL_ClkStatus_Missing){// The clock is missing so we cannot setup the PLL correctlyasm(" ESTOP0");}// Set divider to max value (/4) for safetyPLL_setDivider(pllHandle, PLL_DivideSelect_ClkIn_by_4);// Set the desired multiplierPLL_setMultiplier(pllHandle, clkMult);while(PLL_getLockStatus(pllHandle) != PLL_LockStatus_Done){}// Set the desired dividerPLL_setDivider(pllHandle, divSelect);

} // end of PLL_setup() function

使用外部20M晶振，按照手册配置的外部电路；编译通过，但是烧写程序时，烧写进去了，但是仿真开始，就会执行到下面的语句，仿真停止

 if(PLL_getClkStatus(pllHandle) == PLL_ClkStatus_Missing){// The clock is missing so we cannot setup the PLL correctlyasm(" ESTOP0");}

desheng yang：

回复 mangui zhang:

好的，谢谢您mangui zhang

我是用的28027芯片，时钟配置如下：

CLK_disableOsc1(clkHandle);	
	
CLK_setOscSrc(clkHandle,CLK_OscSrc_External);  
	
CLK_disableClkIn(clkHandle);

CLK_enableCrystalOsc(clkHandle);
	
CLK_disableOsc2(clkHandle);

PLL_setup(pllHandle, PLL_Multiplier_6, PLL_DivideSelect_ClkIn_by_2);

PLL_setup函数如下：

void PLL_setup(PLL_Handle pllHandle, const PLL_Multiplier_e clkMult, const PLL_DivideSelect_e divSelect)  
{if(PLL_getClkStatus(pllHandle) == PLL_ClkStatus_Missing){// The clock is missing so we cannot setup the PLL correctlyasm(" ESTOP0");}// Set divider to max value (/4) for safetyPLL_setDivider(pllHandle, PLL_DivideSelect_ClkIn_by_4);// Set the desired multiplierPLL_setMultiplier(pllHandle, clkMult);while(PLL_getLockStatus(pllHandle) != PLL_LockStatus_Done){}// Set the desired dividerPLL_setDivider(pllHandle, divSelect);

} // end of PLL_setup() function

使用外部20M晶振，按照手册配置的外部电路；编译通过，但是烧写程序时，烧写进去了，但是仿真开始，就会执行到下面的语句，仿真停止

 if(PLL_getClkStatus(pllHandle) == PLL_ClkStatus_Missing){// The clock is missing so we cannot setup the PLL correctlyasm(" ESTOP0");}

desheng yang：

回复 Seven Han:

好的，我检查一下，谢谢您Seven Han