DSPIC33 EV32 GM102不接受演示板的信息

建议你应该分享更多的信息。希望波特率的CAN设置正确吗？嗯，有另一个/不同的晶体振荡器不告诉你，你如何配置PLL，N1，M，N2…



      以下为原文

    The advice is that you should share some more information.
 
Are the CAN settings for the desired baud rate correct?
Well, having another/different crystal oscillator does not tell, how you have configured PLL, N1, M, N2...
 

IRC，演示板运动的8兆赫石英。更有趣的是你的CurrnDSP3.3EV32 GM102板的示意图，但最有可能你没有得到PPS配置正确。或者CAN RX引脚的基本配置。



      以下为原文

    IIRC, the demo board sports an 8 MHz quartz as well.
More interesting would be the schematics of your current dsPIC33EV32GM102 board.
But most likely you didn't get the PPS configuration right. Or the basic configuration of the CAN RX pin.

我对我的OSCCONFIG设置设置有同样的疑问，我确实修正了一些错误的设置，但仍然没有帮助。我用电压探头检查晶体振荡器频率，并实现了频率为7.3MHz。因此，我改变了我的设置为：空振荡器（空）{//CF没有时钟故障；NOSC C PrPPLL；CKKOLD解锁；OSWON交换机完成；γ-BuffTynRead EnCONCOLL（（UIT88T）（0x300和AMP；0x00 FF））；/FRCdIV FRC／2；PLLPRE 2；DoZe1:8；PLLPOST 1:2；打禁用；ROI禁用；CKDIV= 0x3100；/TUN中心频率；OSCTUN＝0x0；/ROON禁用；RODIB基础时钟值；RoSLIP禁用；ReCopon＝0x0；/PLLDIV 38；PLLFBD＝0x26；/RND禁用；SATB禁用；ACSAT禁用；CONCONBITS.RND＝0；CONCONTITES.SATB＝0；CONCONTITES.SATA＝0；CORCONBITS A。顺便说一下，你认为这会是我的DMA设置问题吗？



      以下为原文

    I have same doubt about my setting for the oscCONFIG setting, and I did fix a few wrong settings but still it didn't help. 
I used voltage probe to check the crystal oscillator frequency, and realized the frequency is 7.3MHz. So I changed my setting as:
void OSCILLATOR_Initialize(void)
{
// CF no clock failure; NOSC PRIPLL; CLKLOCK unlocked; OSWEN Switch is Complete;
__builtin_write_OSCCONL((uint8_t) (0x300 & 0x00FF));
// FRCDIV FRC/2; PLLPRE 2; DOZE 1:8; PLLPOST 1:2; DOZEN disabled; ROI disabled;
CLKDIV = 0x3100;
// TUN Center frequency;
OSCTUN = 0x0;
// ROON disabled; ROSEL disabled; RODIV Base clock value; ROSSLP disabled;
REFOCON = 0x0;
// PLLDIV 38;
PLLFBD = 0x26;
// RND disabled; SATB disabled; SATA disabled; ACCSAT disabled;
CORCONbits.RND = 0;
CORCONbits.SATB = 0;
CORCONbits.SATA = 0;
CORCONbits.ACCSAT = 0;
}
 
By the way, do you think it will be my DMA setting issues?
 
 
 

电压探头？测量8MHz的准确度是多少？在晶体上测量频率是有问题的，哪种电容器用于晶体？如果晶体被标记为0.00兆赫，它不能有7.3MHz…



      以下为原文

    voltage probe? how accurate is this for measuring 8MhZ?
There could be problems measuring frequencies on a crystal.
Which capacitors are used for the crystal?
If the crystal is marked with 8.00Mhz it can not be it has 7.3Mhz...

用示波器测量！检查“任何”是否退出指定TX.的PIN：改变配置。一旦“某物”退出TX，您可以测量CAN比特率（有点困难，但可行）。如果必要的话：调整比特率/定时。检查RX是否也能工作。如果不是：改变配置等PP.如果您能够提供示意图将是很好的。如果TX和RX可以颠倒，你可以调试永恒的…



      以下为原文

   

• Use an oscilloscope for measurements!
  
• Check whether "anything" exits the pin designated to CAN TX. If not: change the config.
  
• Once "something" exits CAN TX, you can measure the CAN bit rate (a bit difficult, but doable).
  If necessary: adjust the bit rate/timing.
  
• Check whether CAN RX is working as well. If not: change the config.
  
• etc.
  
• pp.
  

Would be nice if you were able to supply the schematics. If e.g. CAN TX and RX are reversed, you dan debug for eternity to come ...

我用示波器测量。我对我的收发器TX RX PIN感到困惑，因为我没有看到任何信号出来这两个引脚。我发送的消息是一个标准的CAN消息。



      以下为原文

    I am using oscilloscope for measurement. 
I am confused about my CAN transceiver TX RX pin because I didn't see any signal coming out these two pins.
The message I sent is a standard CAN message.
 

“CAN收发器TX RX PIN”＝CANH/CANL，还是您单线CAN？一些收发器（你使用哪种收发器？）如果TX信号不合理，防止传输。



      以下为原文

    "CAN transceiver TX RX pin" = CANH/CANL - or do you sport single-wire CAN?
Some transceivers (which one do you use?) prevent transmission if the TX signal from the µC is not reasonable.

我使用的收发信机是MCP2561。我确实看到信号在Chanh和Chanl引脚和备用引脚低，但没有信号在RX和TX引脚。有什么建议？谢谢。



      以下为原文

    The transceiver I using is MCP2561. I did see signal at CAN_H and CAN_L pins and the standby pin is low, but there is no signal at RX and TX pins.
Any suggestion? Thanks.

这有点令人困惑！你能发送一个电路图的草图吗？干杯，艾萨克



      以下为原文

    That’s a bit confusing! Can you send a sketch of a circuit diagram?
Cheers, Isaac

MICCP2561是很有能力的：TX和RX由于接地故障而可能是低的吗？可能需要深入数据表中才能完全理解收发器的操作。



      以下为原文

    The MCP2561 is quite capable: could it be TX and RX are low due to a ground fault detected?
Might be you have to dive deeper into the datasheet to completely understand the transceiver's operation.

你检查了新设备的PPS任务吗？C1RX RPIR2626C1TX RPNR＆LT；5:0＆GT；- 001110



      以下为原文

    Have you checked the PPS assignments for the new device?
 
C1RX RPINR26
C1TX RPnR<5:0> - 001110