Changing the BOOTMAP bit on 56F805 or family member

Started by dsp_sense in Freescale DSPs15 years ago 2 replies

Does anyone have any experience with changing the bootmap bit in SYS_CNTRL on the fly? I am trying to change it to 1 to access an...

Does anyone have any experience with changing the bootmap bit in SYS_CNTRL on the fly? I am trying to change it to 1 to access an external peripheral in program space, but the processor appears to reset/crash when I do this. I'd like to be able to change it to 1, read the peri


PWM vs PWMMC

Started by Ko Ihara in Freescale DSPs14 years ago 1 reply

I'm using 56F805 to control a number of DC controllers. The DSP is hooked up to a separate H-bridge, which receives two digital signals for...

I'm using 56F805 to control a number of DC controllers. The DSP is hooked up to a separate H-bridge, which receives two digital signals for direction, and one PWM for current control (for 1 motor). Is there an advantage to using PWMMC over the regular PWM bean? All the functionality seems to be in PWM already, so what's the advantage of PWMMC?


Floating sine link error

Started by Ko Ihara in Freescale DSPs14 years ago

I am programming my 56F805 using Metrowerks CodeWarrior. Apparently I have a problem linking with the floating point sine method in the math ...

I am programming my 56F805 using Metrowerks CodeWarrior. Apparently I have a problem linking with the floating point sine method in the math library. I have included the following libraries in the user module: #include #include #include #include #include


Problem with SDK and DSP56F805

Started by georman Calderon in Freescale DSPs16 years ago

Hi everyone, I?ve worked with a DSP56F803, but i?ve had problem with the decoder, to make the mesurement of speed. so a made a...

Hi everyone, I?ve worked with a DSP56F803, but i?ve had problem with the decoder, to make the mesurement of speed. so a made a change to a DSP 56F805, but when a make a compile a  elemental program, i have the following errorCan't write link map ""


Use of TA3 in 56f805

Started by Nir Shelly in Freescale DSPs17 years ago

Hi all, I'm using the TA3 (pin of timer A)in order to trigger the timer A ch3. After awhile, it looks like this pin became as an...

Hi all, I'm using the TA3 (pin of timer A)in order to trigger the timer A ch3. After awhile, it looks like this pin became as an output and I'm wondering why. Included my initialization code: asm(movei #$0,x:TMRA3_LOAD); asm (move #$0,X:TMRA3_CNTR); asm(movei #$000


ADC on 56f805 shift right error

Started by lau_i11 in Freescale DSPs13 years ago 1 reply

Hy everybody I am a student in electrical engineering.This summer I will finish my university an i have to prepare a final project on a...

Hy everybody I am a student in electrical engineering.This summer I will finish my university an i have to prepare a final project on a DSP56f805.I am using the ADC ,but i have a litle problem> for this simple code,Code Warrior give's me 1 error.Does somebody know what sould i do? opcode: #include #include int main(void) { int k,k0; /*Setarea placii Motoro


address bus and data bus

Started by param_p_aug in Freescale DSPs15 years ago

we r freshers just 2003 passouts.we r doing our project in metrowerks 5.1 version with DSP 56F805 processor.ours is a small...

we r freshers just 2003 passouts.we r doing our project in metrowerks 5.1 version with DSP 56F805 processor.ours is a small project only. Power Factor controller.in this RTC is connected directly to address bus and data bus of processor. how to write or read datas from the add


How to reset PWM Counter Register on a 56F805?

Started by Bruno Tremblay in Freescale DSPs16 years ago

Hi, I want to know when PWMEN is put to 0 does that reset the PWM Counter Register? If not, can someone have an idea on how I...

Hi, I want to know when PWMEN is put to 0 does that reset the PWM Counter Register? If not, can someone have an idea on how I can reset or put a value in the PWM Counter Register (read only) without changing the other registers of the PWM? The reason I want to do this is that


GPIO interrupt callback?

Started by drmapl in Freescale DSPs17 years ago 5 replies

Hi all, using a 56F805 I want to use the level sensitive interrupt input on a GPIO line. While I find all sorts of high level...

Hi all, using a 56F805 I want to use the level sensitive interrupt input on a GPIO line. While I find all sorts of high level routines to set various operation parameters I don't know how to set the interrupt callback function. How can I set this callback function? Do I have to


SDK 2.5 and 56f805 spi driver

Started by waynerob92780 in Freescale DSPs17 years ago

I'm trying to troubleshoot a compile error in the spi driver for the dsp56805evm. I compile the demo spi project OK ...

I'm trying to troubleshoot a compile error in the spi driver for the dsp56805evm. I compile the demo spi project OK "dps56805evm/nos/applications/spi". But i create my own test project using "embedded SDK stationary", copy the spi.c and configextram/appconfig.h fr


Service interrupt during DFlash erase on 56F805 and 56F8345

Started by Anonymous in Freescale DSPs14 years ago

Hi, I want to know if it's possible to continue to service interrupt during page erase or word program on Data Flash. I have a periodical...

Hi, I want to know if it's possible to continue to service interrupt during page erase or word program on Data Flash. I have a periodical timer interrupt (about 150 us) that stop when I erase a page of Data Flash. As I read in the DSP user's manual, it takes 40ms to do a page erase and I can't let the interrupt disable for that long. Thanks Bruno


External Memory

Started by Marb in Freescale DSPs16 years ago 3 replies

  Hello!!   Please i need help. I'm working with CodeWarrior and SDK for motorola 56F805

  Hello!!   Please i need help. I'm working with CodeWarrior and SDK for motorola 56F805


Using address pin as GPIO on 56F805 with PE

Started by Bruno Tremblay in Freescale DSPs14 years ago 2 replies

Hello,             I’ve already done this when I was using the SDK but I can’t figure how to do it with...

Hello,             I’ve already done this when I was using the SDK but I can’t figure how to do it with Processor Expert. What I want to do is: while still