TMS320F28069F用RC时钟做CAN通信不能正常接收

时钟源选了后   还需要使能

哥们。使能在哪选？那段程序给贴出来

参考一下代码
CLK_enableCrystalOsc(obj->clkHandle); // Turn on XTALOSC
usDelay(1000); // Wait for 1ms while XTAL starts up
CLK_setOsc2Src(obj->clkHandle,CLK_Osc2Src_External)
CLK_setOscSrc(obj->clkHandle,CLK_OscSrc_External);
// disable the external clock in
CLK_disableClkIn(obj->clkHandle);
                                                                         - ERIC

void HAL_setupClks(HAL_Handle handle)
[
HAL_Obj *obj = (HAL_Obj *)handle;

// enable internal oscillator 1
CLK_disableOsc1(obj->clkHandle);
// set the oscillator source
CLK_setOscSrc(obj->clkHandle,CLK_OscSrc_External);
// disable the external clock in
CLK_disableClkIn(obj->clkHandle);
// disable the crystal oscillator
CLK_enableCrystalOsc(obj->clkHandle);
usDelay(1000);//
// disable oscillator 2
CLK_disableOsc2(obj->clkHandle);
CLK_setOsc2Src(obj->clkHandle,CLK_Osc2Src_External);
// set the low speed clock prescaler
CLK_setLowSpdPreScaler(obj->clkHandle,CLK_LowSpdPreScaler_SysClkOut_by_1);
// set the clock out prescaler
CLK_setClkOutPreScaler(obj->clkHandle,CLK_ClkOutPreScaler_SysClkOut_by_1);
return;
] // end of HAL_setupClks() function

这样改后试了还是不行！

参考下面代码，来改对应的Motorware版本的代码
//---------------------------------------------------------------------------
// Example: XtalOscSel:
//---------------------------------------------------------------------------
// This function switches to External CRYSTAL oscillator and turns off all other clock
// sources to minimize power consumption. This option may not be available on all
// device packages
void XtalOscSel (void) [
EALLOW;
SysCtrlRegs.CLKCTL.bit.XTALOSCOFF = 0; // Turn on XTALOSC
DELAY_US(1000L); // 1mS delay to ensure crystal
// oscillator is up and running.
// Adjust as needed.
SysCtrlRegs.CLKCTL.bit.XCLKINOFF = 1; // Turn off XCLKIN
SysCtrlRegs.CLKCTL.bit.OSCCLKSRC2SEL = 0; // Switch to external clock
SysCtrlRegs.CLKCTL.bit.OSCCLKSRCSEL = 1; // Switch from INTOSC1 to INTOSC2/ext clk
SysCtrlRegs.CLKCTL.bit.WDCLKSRCSEL = 0; //Switch Watchdog Clk Src to internal clock 1
SysCtrlRegs.CLKCTL.bit.INTOSC2OFF = 1; // Turn off INTOSC2
SysCtrlRegs.CLKCTL.bit.INTOSC1OFF = 0; // Turn on INTOSC1
EDIS;
]
                                                                         Young Hu

这个我之前参考试过，还是不能运行。我认为别的地方应该还需要改...

// disable oscillator 2
CLK_disableOsc2(obj->clkHandle);
不要加这句。
另外你外部晶振多少M。
ERIC
                                                                         - ERIC

您好 试试下面的代码
void HAL_setupClks(HAL_Handle handle)
[
HAL_Obj *obj = (HAL_Obj *)handle;
CLK_enableCrystalOsc(obj->clkHandle);
usDelay(1000);
CLK_setOscSrc(obj->clkHandle,CLK_OscSrc_External);
CLK_disableOsc1(obj->clkHandle);
CLK_disableOsc2(obj->clkHandle);
CLK_disableClkIn(obj->clkHandle); // set the low speed clock prescaler
CLK_setLowSpdPreScaler(obj->clkHandle,CLK_LowSpdPreScaler_SysClkOut_by_1); // set the clock out prescaler
CLK_setClkOutPreScaler(obj->clkHandle,CLK_ClkOutPreScaler_SysClkOut_by_1);
return;
] // end of HAL_setupClks() function
另外你还需要根据你用的晶振的频率来改PLL的倍频，我用的是20MHz的晶体所以我把以前根据10M的振荡器定的倍频减半。
// Setup the PLL
HAL_setupPll(handle,PLL_ClkFreq_45_MHz);