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Tool/software: Code Composer Studio
I am able to run the c2000ware example project "Example_2805xECanBack2Back" successfully (PassCount increases, ErrorCount remains at zero). Now we want to leave self test mode (set CANMC>STM = 0) and transmit/receive signals to/from the PCAN-USB CAN bus connected to the microcontroller. When we try to do this, the program gets stuck at "while(ECanaRegs.CANTA.all != 0x0000FFFF )" (the transmit acknowledge bits are not set). We are using the PCAN-View software to read/generate signals on a computer, and from there we cannot see any signals coming in. When we try to output a signal from the computer, we get an error suggesting that there is some interference or overlap with the data in the CAN bus (or the bus is simply not connected to the microcontroller).
What do we need to do to leave self test mode and communicate with the CAN bus? We think that our bit timing settings are correct, but can't be sure. Both the computer and the microcontroller should be operating at 1 Mb/s. How else can we test that the eCAN module is properly outputting signals to the CAN bus?
Bit timing settings:
ECanaShadow.CANBTC.bit.BRPREG = 2;
ECanaShadow.CANBTC.bit.TSEG2REG = 1;
ECanaShadow.CANBTC.bit.TSEG1REG = 6;
ECanaShadow.CANBTC.bit.SAM = 0;
ECanaRegs.CANBTC.all = ECanaShadow.CANBTC.all;Thank you
Thanks, I tried adapting the project for my MCU (28054f) and am running into problems. When I use the linker command file, "28054f_RAM_lnk.cmd", I get a warning "creating output section "ramfuncs" without a SECTIONS specification". I switch to the file "F28054f.cmd" and the warning is gone.
In both cases, however, when I try to load the program onto the board, it does not reach the beginning of main. It builds and I see:
C28xx: GEL Output:
Zone 1 is Secure.
C28xx: GEL Output:
Zone 1 is Secure.
But the program does not run. I have the ability to terminate the program, but not pause it. It never reaches the breakpoint at the beginning of main. I have no other errors. How do I configure the linker command file to get this to work?
Here's my file search path, does INSTALLROOT_2833x need to be changed? I can't find a valid replacement.
