do loop execution corruption

Started by drea...@aptx.com in Freescale DSPs11 years ago 4 replies

Hi, I'm writing assembly code for the DSP56371 but find that execution of my do loops loop counts are intermittently corrupted. I'm running the do...

Hi, I'm writing assembly code for the DSP56371 but find that execution of my do loops loop counts are intermittently corrupted. I'm running the do loop code in the background, have several isr s running in the foreground and my stack has been extended into RAM. I've debug code to break when the loop count is out of range and when that happens, I see that the it has assumed a value equal to or at...


Re: DSP fried - Solved with optoisolated programmer

Started by Carlo in Freescale DSPs11 years ago 9 replies

Hi, me and my research group are working towards developing a hybrid vehicle, where the electric powertrain is driven by a 56F8323...

Hi, me and my research group are working towards developing a hybrid vehicle, where the electric powertrain is driven by a 56F8323 Freescale DSC. We frequently have to reprogram the DSC, and once in about ten or twenty reprograms the DSC would stop working and give "Core not responding" and "Failed to write to FLASH" errors; at this point the only remedy is to replace the DSC (DSC fried)....


AW: Re: DSP fried - Solved with optoisolated programmer

Started by Barnard Adam in Freescale DSPs11 years ago 1 reply

adam.barnard_ch wrote: > Hi Carlo, > > I am using the MC56F8367. When I started using the device, I created > structures for addressing...

adam.barnard_ch wrote: > Hi Carlo, > > I am using the MC56F8367. When I started using the device, I created > structures for addressing the hardware registers of the peripherals > directly. After some playing around with the lincer command file I > finally got it running on the Freescale DemoBoard. But when I > downloaded the code to my hardware, I also received the message: Core > not


overlaying modules at runtime

Started by Kamalnathan Ramamoorthy in Freescale DSPs11 years ago 1 reply

Hi all, I have run in to memory problem (internal data memory (x- and y-) as well as p-mem), I have flash memory space that I can use....

Hi all, I have run in to memory problem (internal data memory (x- and y-) as well as p-mem), I have flash memory space that I can use. My application is monolithic in terms of program memory, I thought I would separate out functional blocks and overlay p-mem, and bring in functional blocks program memory from flash to p-mem. I am not sure if this can be done. If it can be done can anyone poin...


generating frequencies, no look-up need

Started by dspabout in Freescale DSPs11 years ago 1 reply

Hello, Im new to DSP. Does anybody have any example of numeric oscillator in ASM for motorola 56K or 56Fxxx? Im looking to generate several...

Hello, Im new to DSP. Does anybody have any example of numeric oscillator in ASM for motorola 56K or 56Fxxx? Im looking to generate several fixed frequencies no look-up table, just plain square output on PIO. Thanks a lot


embedded SDK download

Started by bhar...@honeywell.com in Freescale DSPs11 years ago 1 reply

Hi Guys, i am new to dsp 56f805 microcontroller programming. I have installed CodeWarrior for DSC56800/E. Please suggest me whether to use...

Hi Guys, i am new to dsp 56f805 microcontroller programming. I have installed CodeWarrior for DSC56800/E. Please suggest me whether to use Processor Expert or Freescale's embedded SDK. > From where can i download embedded SDK software? Thanks in advance Bharath


LOG2NRM.ASM

Started by "ralph.harry" in Freescale DSPs11 years ago

Hi to all, I was looking at a piece of code available on the net to compute log2(x) for any number x between 2^-23 and 1. This code is a...

Hi to all, I was looking at a piece of code available on the net to compute log2(x) for any number x between 2^-23 and 1. This code is a macro included in the file called LOG2NRM.ASM: log2nrm macro ; ; This program calculates the base 2 logarithm of an unnormalized ; 24 bit fraction "x" in register A and returns a scaled fraction ; "y" in register A. ; ; y...


DSPAUDIOEVMMB1E Troubles

Started by jag3...@Lehigh.EDU in Freescale DSPs11 years ago 5 replies

Hi all, I'm working with this development board and the DSP56366 daughterboard for a senior project. This is my first time working with a DSP...

Hi all, I'm working with this development board and the DSP56366 daughterboard for a senior project. This is my first time working with a DSP kit, and while I know I'm a beginner, I was expecting a lot more clarity and help in the what little documentation there is. I've obtained the passthru code from a helpful user on this forum already, and have the following software: Symphony Studio Su...


watch dog on 56f807

Started by linelizabeth in Freescale DSPs11 years ago 2 replies

Our product is medium voltage (4160V) variable frequency drive. It consists of 9~24 power cells depending on the power level of the load. Each...

Our product is medium voltage (4160V) variable frequency drive. It consists of 9~24 power cells depending on the power level of the load. Each power cell has a control board with a DSP56F807 and an Altera EPLD on it. The DSP talks to the EPLD via SPI port and the EPLD talks to a master control board via a fiber optic cable. The drives that we have DSP watch-dogged is used in a coal po...


DSPAUDIOEVM and Suite56

Started by jami...@izotope.com in Freescale DSPs11 years ago 10 replies

I have a Freescale/Motorola DSPAUDIOEVM board, a 56362 daughter board and a copy of the Suite56 tool set. What I am looking for is any source...

I have a Freescale/Motorola DSPAUDIOEVM board, a 56362 daughter board and a copy of the Suite56 tool set. What I am looking for is any source code examples, preferably just passthru source code that I can use as a starting point. Most eval boards come with some minimal functional project that allows you to build and run known working code, if only to test the development environment. This board...


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