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mscan example

Hello. I am just getting started using the MSCAN on my 56F807 evaluation board. I haven't been able to find any sample code for this yet (mscan initialization, inte...

MSCAN for SDK 2.5 DSP56F800   [2 Articles]

Hi Everyone, I am looking for the " mscan.c " file that is missing from the SDK source CD. Could someone forward it to me. Many thanks. email: ...

MSCAN problem   [8 Articles]

I have following problem with DSP56807 CAN controller: Using 56807 in CAN application in classic way : 'TX empty' interrupt routine fills the MSCAN registers wit...

successful transmission of MSCAN message frame   [2 Articles]

hi everybody, i am working MSCAN protocol (v02.15) for the MC9S12D64BCPV(16MHz) MCU....can anybody suggest me that how can we know the Succesfull Transmission ...

56F803 MSCAN correct bit timings @ 50 kbps   [2 Articles]

Hello all, I'm having problems with our network running at 50kbps. Over a long time (many hours or a few days) the MSCAN module goes dead and is no longer communicating. The e...

568xx MSCAN: "OVERLOAD" Frame?

Does anyone happen to know whether the 568xx MSCAN peripheral sends a CANbus "Overload Frame" under any condition? I don't mean setting the "Overrun" flag in CANRFL...

Problem with sending 7 and 8 Byte Frame in CAN   [4 Articles]

With my target board, and the DSP56F803 Evaluation board, I am experiencing problems with the MSCAN module when sending 7 and 8 byte frames. The problem I have...

MSCAN useful information

The following Application Notes and FAQs have some highly useful information for anyone writing code for the MSCAN (Motorola Scalable Controller Area Network) modul...

56803 erratum 11.8: missed MSCAN TXEIE   [2 Articles]

Hi I only just recently noticed the MSCAN erratum 11.8 (copied below). I was puzzled by this. I thought that as long as the flag bit was set (TXE[2:0] in th...

TTCAN for DSP56F807

Hello, I want to use the MSCAN Module of the DSP56807 for a hart real-time application with periodic transmission of messages in a fix time slot. The automatic re...

MSCAN and CanReadCallBack interrupt problem   [3 Articles]

I am using the mscan drivers from SDK3.0 and the example program can.h which comes with that version of the SDK. In their CAN example they setup a function "CanRead...

#pragma Interrupt   [3 Articles]

Hi, I am trying to program an ISR in MSCAN recieve routine. I went thru the archives and found a message frm Art Johnson which was regding the usage of #pragma Interrup...

mscan from scratch

Hi all, I am trying to connect the CAN bus of the 56F807 to other devices that has CANopen. I just need to get some basic status and send some signals to reset these nodes. ...

Re: Digest Number 739

At 10:26 PM 2/21/05, you wrote: >Subject: RE: 56800 SDK CAN driver > > >Hello, >I'm a new member of this group and I am also looking out for the MSCAN >...

programming boot flash   [3 Articles]

hello, I have written code using codewarior3.5,I also downloaded the code to flash it is all working fine. if Ireset the card when JTAG cable is removed the pro...

New FAQs for 56800/56800E DSPs

These FAQs have been posted since July at http://e- www.motorola.com/cgi-bin/faq.cgi?kbase=dsp&prod_default=56800 How to order male daughter card connectors ...

Receiving Messages on DSP56F805   [2 Articles]

Hi, I am Chandru. I am trying to program DSP56f805 to send and receive CAN messages. I am able to transmit messages and store them in the Transmt buffers(CAN_TB...

AW: MSCAN interface on 56f803

Hello Rick, Thanks for your kind answer. Changing setup works for me and I can read REC register in any state. I also managed to have automatic baud rate detection ...

MSCAN interface on 56f803   [2 Articles]

Hello,   I’m wondering if anyone met the following problem: I’d like to have a CAN device with automatic b...

MSCAN TxErr counter latches before BusOff when CANH shorted to Battery   [2 Articles]

  Hello all,   I don't know whether this is a problem or not. During testing of our product, it was noticed that certain bus fault scenarios (e....

56800 SDK CAN driver   [5 Articles]

Motorola does not place the SDK MSCAN drivers on the 2.5 or 3.0 CDs. SDK and Motorola website says that they are "priced separately" but that's all it says about it...

RE: About CAN's least Baudrate !

You can use the PLL Clock Out Divide bits (PLLCOD[1:0] - Bits 11-10) in the PLL Divide-By Register (PLLDB), to divide the PLL output by 1, 2, 4, or 8, so you can ge...

RE: Need manual....

You can download the documentation you need for free from Motorola's website, as follows: User's Manual: http://e-www.motorola.com/brdata/PDFDB/docs/DSP56F801-7...

Re: Motorola Premier SDK Part Number   [2 Articles]

Jacob, John is right about the SDK premium components being sold separately. For instance the MSCAN support part number is ENGRCHGCAN. Evidently the software a...

56F803: Access to external Interface hangs the CAN-Interface   [2 Articles]

Hallo DSP'lers, I'm working with the 56F803. I connected a FPGA (APEX form Altera) to the external memory-interface. I decode the lines A0-A7, WR\, RD\, PS\ an...

FW: Pointers to registers

> Hi Robert > > I didn't care for the "ArchIO" mess. It seemed needlessly complex, and > when I looked at the generated ASM, and it was calculating the addresses ...

RE: RE: Interrupt/context problem?   [6 Articles]

warning: long post If you have IRQ madness when using "#pragma interrupt" without the SDK, go to "mixed mode" or "disassemble" and look at your ISR postambles - ...

install static NORMAL_ISR_XX in SDK   [7 Articles]

A novice question: what am I missing in installing a normal ISR (not fast), statically, not dynamically. I'm trying to use the IRQ Dispatcher, but not the whole dri...

Question regarding interrupts in DSP56F805   [3 Articles]

Hi Rick, I read thru the AN2283 document, which explains the interrupt structure in 805. In my program i have used the Transmit buffer 0 to store the message. I initially st...

RE: FlexCAN bit timing defaults

A follow-up: I'm trying to match this (40MHz 56F803 MSCAN) setup, on a 60 MHz 56F8357 FlexCAN peripheral. BTR0 = 0xC1 (bit timing register 0) BTR1 = 0x6B ...

RE: Thanks again, Art

Actually I just remembered a situation where we have seen this sort of thing (ie unhandled interrupt) in our systems. It happens if we leave the parallel JTAG cable...

USE_NESTED_INTERRUPTS   [8 Articles]

I have another beginner SDK question, after searching the Yahoo archive and all the manuals that seemed relevant. I seemed to have found an answer, but it didn't...

RE: simple project demonstrating how to set-up interrupts without the use of SDK

My opinion is, that the best and safest thing to do regarding the MSCAN interrupts is to use the SDK Interrupt Dispatcher and "Normal" interrupts. We do that here a...

Writing MSCAN CANE bit (56805)   [2 Articles]

Hi, in manual there is written following about CANTCL1 register bits (ch. 8.8.2 of 5680x User's manual): "These bits are read/write at any time when SFTRES ...

RE: [motoroladsp_unmoderated] Interrupt/context problem?

We have had problems with the MSCAN error interrupts (as I'm sure you've already read about), but I developed a work around that fixed the problem. It's described i...

RE: No more acknowledge on incoming messages

Hi Andrea Unfortunately, you can only read the error counter registers if you go into Sleep mode or Soft Reset mode. I don't see any way to detect one bad pack...

FW: No more acknowledge on incoming messages   [4 Articles]

Andrea, It sounds as if the receiver never saw a valid packet. Is communication successful when the stepper is _not_ generating noise? For instance, a node ...

AW: 56800 SDK CAN driver

Hello, If you are planning tu buy a CanOpen stack, then it has mostly some kind of basic self-made SDK. I know about 3 companies offering it for 56f80x: -Port ...

RE: Sending a CAN message

Hi Robert There's about a bushel of register setups required. I _would_ urge you to read the MSCAN chapter in the User Manual, but reading it repeatedly didn't...