About ADC

Started by lexd...@yahoo.com in Freescale DSPs14 years ago

Hi, I'm learning DSP56F805EVM. I have problem with ADC port. 1) Is there Vref pin for the ADC? If yes, where is it? I didn't find it...

Hi, I'm learning DSP56F805EVM. I have problem with ADC port. 1) Is there Vref pin for the ADC? If yes, where is it? I didn't find it on J9. 2) Is the ADC result value random, if no input signal connected to the ADC pins? Thanks a log, Leon


ADC Interrupts, SDK

Started by Roger Flor in Freescale DSPs17 years ago

Hello I am a DSP56F805 EVM user I am trying to run the ADC using SDK Section 5.4.2 of the SDK user's manual (Targeting the...

Hello I am a DSP56F805 EVM user I am trying to run the ADC using SDK Section 5.4.2 of the SDK user's manual (Targeting the DSP56F8xx) says that "The ADC A Zero Crossing, ADC A Limit Error, and ADC A Conversion Complete interrupts are enabled when INCLU


Loop sequemtial mode of ADC

Started by Roelof Oelofsen in Freescale DSPs17 years ago

Hi all, I have a short question today. If the ADC of the 56f8xx DSP is in loop sequential mode, does it consume any processing...

Hi all, I have a short question today. If the ADC of the 56f8xx DSP is in loop sequential mode, does it consume any processing power? In other words, is the core involved in any processing or does the ADC only run on the sideline, overwriting samples in the appropriate ADC res


Use Button at ADC???

Started by wpethe in Freescale DSPs17 years ago 2 replies

Hi, has anybody ever used the ADC to drive a button? Now we are going to use 4 ADC ports to connect them with buttons. Has...

Hi, has anybody ever used the ADC to drive a button? Now we are going to use 4 ADC ports to connect them with buttons. Has anybody got an Example? Thanks w. Pethe PS: Then I can use some GPIO Pins for output.


ADC converter on DSP56F805

Started by Roger Flor in Freescale DSPs17 years ago 1 reply

Hello! I am using a DSP56F805 EVM. I am trying to pass a signal through the on chip ADC then the DSP then on to the on chip SPI...

Hello! I am using a DSP56F805 EVM. I am trying to pass a signal through the on chip ADC then the DSP then on to the on chip SPI and external ADC (Maxim). I have already tackled the DSP to SPI to external ADC side (lots of thanks to Mr Art Johnson). I used the MISO signa


ADC DSP56F801

Started by clementevalle in Freescale DSPs14 years ago

hello I trying to get signals trought 56F801 ADC in demo board, I need to take 128 samples, and It?s until 30 samples, after that the...

hello I trying to get signals trought 56F801 ADC in demo board, I need to take 128 samples, and It?s until 30 samples, after that the ADC don?t take samples. can somebody help me.


56F805EVM ADC problem

Started by millindala in Freescale DSPs16 years ago 1 reply

I am working with two 56F805EVMs - one is Rev. A and the other Prague- E version. I have many problems with their ADC's, the worst...

I am working with two 56F805EVMs - one is Rev. A and the other Prague- E version. I have many problems with their ADC's, the worst being in Rev. A. Suppose a constant voltage of +2.5 V is fed to the ADC in any of these DSPs, there is a wide disparity among different samples. Furtherm


DSP56F805 ADC Highlimit

Started by drexlmeier in Freescale DSPs16 years ago

Hi, does anybody know where I can find information about the ADC Highlimit interupt.(LowLimit/ZeroCorssing resp.) I?m...

Hi, does anybody know where I can find information about the ADC Highlimit interupt.(LowLimit/ZeroCorssing resp.) I?m interested in general infromation like: How do I have to Configure the ADC. When does the interrupt occure? Which values are compared with the Limit Regi


The concept about DSP56F801 12 bits ADC

Started by pitchayav in Freescale DSPs14 years ago

Could someone aim me about how to understand for using 12 bits-ADC to receive an analog value from instrument and to send the digital datas ...

Could someone aim me about how to understand for using 12 bits-ADC to receive an analog value from instrument and to send the digital datas through 12 bit-DAC by using Processor Expert in CodeWarrior? I have found a lot of example in Freescale homepage but I have not get this yet. Please show me to find the document or tutorial about this 12 bits-ADC


migrating from 56F803 to 56F8346

Started by thomaskracke in Freescale DSPs15 years ago 1 reply

Hallo DSP'lers, I did a project in the past with the 56F803. Now I'm looking for a better replacement: I need - a better...

Hallo DSP'lers, I did a project in the past with the 56F803. Now I'm looking for a better replacement: I need - a better ADC - more speed Does anybody know if the ADC in the 56F8346 is really better than the ADC in the 56F803? I read something a


ADC driver and Interrupts (DSP56F805)

Started by Roger Flor in Freescale DSPs17 years ago 1 reply

Hello! I am using a DSP56F805 EVM. I am trying to run the ADC. I started by running the ADC application found in the...

Hello! I am using a DSP56F805 EVM. I am trying to run the ADC. I started by running the ADC application found in the applications folder that comes with SDK. When I ran the program, it halts upon entry to main because that is what is in the debugger settings. The stack pane of


can we use ADC of 70-100MHz with dsp56303

Started by gunala sunitha in Freescale DSPs15 years ago

hi, i want to know, is it possible to use ADC of around 70-100MHz sampling frequency with the dsp 56303 by using the digital down...

hi, i want to know, is it possible to use ADC of around 70-100MHz sampling frequency with the dsp 56303 by using the digital down converter in between the ADC and the DSP.  since the ADC of such a sampling frequency come with the parallel output only and the dsp56303 will not sup


ADC public interface

Started by Roger Flor in Freescale DSPs17 years ago 1 reply

I have been trying to use the SDK. I am trying to run the ADC Section 5.4.3 (ADC API Definition) of the SDK Documentation...

I have been trying to use the SDK. I am trying to run the ADC Section 5.4.3 (ADC API Definition) of the SDK Documentation (DSP56F80x Platform) contains this: "Public Data Structure(s) typedef struct { adc_eAnalogChannel AnalogChannel; adc_tSample


Electrical specifications for ADC

Started by Oscar Javier Tadeo Jaramillo G in Freescale DSPs15 years ago 1 reply

Greetings.   I need work with the ADC module, sensing a senoidal wave, but i don't know what is the max in voltage...

Greetings.   I need work with the ADC module, sensing a senoidal wave, but i don't know what is the max in voltage amplitude of the input for ADC.   The ADC can work with negative and positive value in the input?    


Rif: 805 ADC current readings

Started by Anonymous in Freescale DSPs17 years ago

The array ResultReg contain the converted results from ADC channel scan that you have incude in the channel list register. For...

The array ResultReg contain the converted results from ADC channel scan that you have incude in the channel list register. For example if you want to get the ADC read of input AN0, AN1, AN5 you must include three samples in appconfig.h: #define INCLUDE_ADCA_SAMPLE_0 #def


56F827 ADC SYNC

Started by Papa__J in Freescale DSPs17 years ago 2 replies

I have been unable to find much information regarding the connection of the quad timer modual to the ADC sync input in the 826/827...

I have been unable to find much information regarding the connection of the quad timer modual to the ADC sync input in the 826/827 users manual. Specificaly, I was trying to discover if an exernal source could be used to trigger the ADC SYNC (I don't think so). Also, is this SYNC alw


ADC signal noise in EVB

Started by Anonymous in Freescale DSPs17 years ago 2 replies

Hi All, I have tried to use ADC in DSP56F805 EVM with SDK application note "ADC" and I have modified it to view result of...

Hi All, I have tried to use ADC in DSP56F805 EVM with SDK application note "ADC" and I have modified it to view result of conversion with PC-MASTER. I have connected a potentiometer to drive AN1 in J9 (A/D connector) but the result is that the readed value has an oscillatio


805 ADC current readings

Started by chrisaustin2003 in Freescale DSPs17 years ago

Hi there. I'm trying to find out how to read the DC bus current from the ADC. I know that you can read the DC bus voltage by using ...

Hi there. I'm trying to find out how to read the DC bus current from the ADC. I know that you can read the DC bus voltage by using periphMemRead(&ArchIO.AdcA.ResultReg[0]). I'm assuming that there is a way to read current from the ADC with a similar call. Does anyone know were i


56f8300 dev. board adc problem.....

Started by in Freescale DSPs15 years ago 5 replies

hi! i have problems with adc of the 56f8323(i am using 56f8300 dev. board). i am trying to write a simple program usind adc. i...

hi! i have problems with adc of the 56f8323(i am using 56f8300 dev. board). i am trying to write a simple program usind adc. i have sent it in my attachment. in program i am burning the leds according to e-field sensor or microphone(if button pressed). i have used t


ADC

Started by izrrael valdez reyes in Freescale DSPs11 years ago

hi, im working on a project on a dsp56f8001 & i have some issues on the ADC, need some tips on how to sample and convert and how to filter a...

hi, im working on a project on a dsp56f8001 & i have some issues on the ADC, need some tips on how to sample and convert and how to filter a signal once its digitalized. tnx in advance