Missing ports/pins on Demo Brd (56F8300DEMO)

Started by Nicholas Singh in Freescale DSPs16 years ago 1 reply

Hello, Seems as though this board is missing the PCB-mount DB9 serial port as well as what appears to be some RS-232 logic...

Hello, Seems as though this board is missing the PCB-mount DB9 serial port as well as what appears to be some RS-232 logic level shifting IC(s) and analog parts. Also, the Timer/PWM, ADC and GPIO/SERIAL set of connectors do not have pins. I'm specifically interest


MC56F8322 SPI

Started by Syed Hasan Rizvi in Freescale DSPs15 years ago

Hi All, I am trying to interface '8322 DSP SPI port to a serial SPI device that takes four 16 bit words for each communication...

Hi All, I am trying to interface '8322 DSP SPI port to a serial SPI device that takes four 16 bit words for each communication cycle. The module aso requires the frame Slave Select bit (I am using SS of SPI port as an GPIO) to be toggled high and low after transmitting every 16 bit w


Use PWMA pin as Output???

Started by Olamide... in Freescale DSPs16 years ago 1 reply

How can i configure PWMA pin as just an output pin. (i.e. i want to use this pin as just a regular output because i am out of...

How can i configure PWMA pin as just an output pin. (i.e. i want to use this pin as just a regular output because i am out of regular GPIO pins) Plz help ASAP... thx's a lot... Olamide... "financially free dec 2005"


counting a LOT of quadrature inputs with 56F807

Started by kiha...@gmail.com in Freescale DSPs14 years ago 1 reply

Hi, I'm trying to build a board with 56F807, which can count 7 different quadrature inputs if I use quad timers and quad decoders. But I would...

Hi, I'm trying to build a board with 56F807, which can count 7 different quadrature inputs if I use quad timers and quad decoders. But I would like to have an option to count from more than 7 quadrature inputs. So I programmed a 4-state (00, 01, 11, 10) finite state-machine, which takes inputs from one of the GPIO pins, and polled at a set frequency. For example, if the previous input was 0


Basic Read and Write operation for DR register of GPIO port!

Started by abdulrazaqali in Freescale DSPs13 years ago 4 replies

Any thoughts for getting the value from GPIO_B_DR register? I want to increment the GPIO_B_DR value after every iteration but no luck so far;-)...

Any thoughts for getting the value from GPIO_B_DR register? I want to increment the GPIO_B_DR value after every iteration but no luck so far;-) I'm getting the '0' value every time. /////////////////////////////// register po; asm(move #$0002 , X:GPIO_B_DR); po = 0; while(1) { asm(move X:GPIO_B_DR , X0); //Get DR register value in X0 asm(move X0 , po); // move it to po variable ...


How can I write low-level drivers using SDK's help?

Started by Michael W. Mann in Freescale DSPs17 years ago

A new CodeWarrior and Embedded SDK training exercise has been added. In Exercise 3d you learn how to write a low level driver for...

A new CodeWarrior and Embedded SDK training exercise has been added. In Exercise 3d you learn how to write a low level driver for the EVM's debug LED(s), which are attached to specific GPIO pins. Also provided are modified Appendix C programmer's sheets showing SDK support. Stand alo


AW: Multiple Interrupts in GPIO and Flash Memory Data

Started by Bende Georg in Freescale DSPs16 years ago

Variable access: You can assign a variable to a specific memory address like this: UInt16 GPIOE_DR:0xff1; This assigns the...

Variable access: You can assign a variable to a specific memory address like this: UInt16 GPIOE_DR:0xff1; This assigns the variable GPIOE_DR to the memory address 0xff1. I don't clearly understand the second question. Variables are normally in the Data Memory. Data that isn't c


read User Jumpers, 56F8357 eval. board, code snippets

Started by Corey, Rick in Freescale DSPs15 years ago

Hi Here's 2 trivial code snippets for configuring and reading the "User Jumpers" on a 56F8357 evaluation board. These are...

Hi Here's 2 trivial code snippets for configuring and reading the "User Jumpers" on a 56F8357 evaluation board. These are jumpers JG15 and JG16. I configure them as GPIO inputs (open drain). See figure 2-12, section 2.14 of the '357 EVM Hardware User Manual. The alte


WHY the state the GPIO of PE3(dsp56f807) doesn't change

Started by dj sunny in Freescale DSPs13 years ago 1 reply

hi, i use the PE3 as a output signal,i have make a program: {...

hi, i use the PE3 as a output signal,i have make a program: { periphMemWrite(0x0000,&ArchIO.PortE.PeripheralReg); periphMemWrite(0x00f0,&ArchIO.PortE.DataDirectionReg); periphMemWrite(0x0000,&ArchIO.PortE.DataReg); } /************************************************/ { periphBitSet(0x0008,&ArchIO.PortE.DataDirectionReg); periphBitClear(0x0008,&ArchIO.PortE.DataReg); } Th...


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