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Hi, I am new to programming this device and am trying to fathom the booting over the SCI port. I have 2 targets, one is a 56303EVM module and the other is our own 56311 target platform. The SCI ports on both are connected via RS232 to the outside world. I understand that there might be a utility floating around to enable the downloading of code to the targets is this true? Also the manual specifies that I must download a bootloader first that will then download the application. The only bootloader I can find is the one printed as a pdf in the manual and this does not seem to asssemble. Any tips or pointers to an actual bootloader? The manual also specifies that the first 2 words must be the length and starting address of the code being downloaded. Is there a utility that takes either a cld or srec file and can create the required format file (binary I presume)? I know this is a lot of questions and I am sorry if I sound ignorant, but that is how I feel at the moment. So to Summarise Is there a utility for downloading code over the the serial port of a PC? Where can I find bootloader code for the DSP? How can I convert either the srec, cld or whatever format files to the needed format for downloading? Thanks, Scott. |
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Booting DSP563xx over SCI port
Started by ●October 22, 2003
Reply by ●October 22, 20032003-10-22
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Moin Scott, All DSP563XX derivates have a ROM bootcode that usually executes after reset, and depending on the configuration fetches code from SCI, host Interface, 8-bit wide memory, starts executing code from external memory or whatever. The configuration is usually determined by the MODA/ MODB/MODC pins, this is very well documented in the specific datasheet and in the source code for the bootloader. BTW, documentation is the only reason the source code for the bootloader is provided, it is already inside the ROM of the DSP, so trying to assemble and download it is quite useless. If you are not sure if the proper booting method is selected, you should reset and single-step you target and compare execution with the provided bootloader code. > The manual also specifies that the first 2 words must be the length > and starting address of the code being downloaded. Is there a > utility that takes either a cld or srec file and can create the > required format file (binary I presume)? Not quite, I did a lot of utilities that convert .lod files to binaries, but these include initialized data for P: X: Y: L: mem, which the built-in bootloader cannot handle, so first thing I do is to download my own bootloader which does exactly this. Tell me if you want any of these. Stefan |
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Reply by ●October 23, 20032003-10-23
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Thanks Stefan, I have just noticed that the RS232 input on the DSP303EVM should enable me to boot over the SCI port, however it appears as if the sclk goes to pin 7 of the serial connector. Is hyperterminal running under Windows 2000 capable of generating the 16x clock required to load the data? If not can somebody point me in the direction of a tool that would. Cheers, Scott. --- In , Stefan Stenzel <Stefan@S...> wrote: > Moin Scott, > > All DSP563XX derivates have a ROM bootcode that usually executes after > reset, and depending on the configuration fetches code from SCI, host > Interface, 8-bit wide memory, starts executing code from external > memory or whatever. The configuration is usually determined by the MODA/ > MODB/MODC pins, this is very well documented in the specific datasheet > and in the source code for the bootloader. > > BTW, documentation is the only reason the source code for the bootloader > is provided, it is already inside the ROM of the DSP, so trying to assemble > and download it is quite useless. > > If you are not sure if the proper booting method is selected, you should > reset and single-step you target and compare execution with the provided > bootloader code. > > > The manual also specifies that the first 2 words must be the length > > and starting address of the code being downloaded. Is there a > > utility that takes either a cld or srec file and can create the > > required format file (binary I presume)? > > Not quite, I did a lot of utilities that convert .lod files to binaries, > but these include initialized data for P: X: Y: L: mem, which the built-in > bootloader cannot handle, so first thing I do is to download my own bootloader > which does exactly this. Tell me if you want any of these. > > Stefan |
