Microprocessors for Java or MPEG4

Started by Potxoka in comp.arch.embedded11 years ago 4 replies

Hello I'm looking for two microprocessors, one that optimized for Java applications and another that has a compressor MPEG4. I need to do...

Hello I'm looking for two microprocessors, one that optimized for Java applications and another that has a compressor MPEG4. I need to do two designs, one with uClinux running an application in Java (requires a lot of time porting to C), another who has uClinux and it has to compress into MPEG-4 video input. For MPEG4 I found the series of Freescale i.MX, looking at Datasheet but I find no...


6805 to 68h08 conversion

Started by darkknight in comp.arch.embedded14 years ago 2 replies

We're looking at converting a PCB from 6805 to 68H08. Freescale (Motorola?) have a document that says the H08 is enhanced "fully object code...

We're looking at converting a PCB from 6805 to 68H08. Freescale (Motorola?) have a document that says the H08 is enhanced "fully object code compatible" version of the 6805. I suspect this just means that the opcodes for e.g. BRA somewhere, are the same in H08. I know most H08 instructions execute faster than 6805.. I will read the manuals in detail to compare but I'm wondering if any...


Motor Noise, Decoupling techniques

Started by Peter Q. in comp.arch.embedded12 years ago 14 replies

Hello All, I'm building a small vehicle that uses a couple of optical sensor as navigation. There are two MCUs, both Freescale HC08 family....

Hello All, I'm building a small vehicle that uses a couple of optical sensor as navigation. There are two MCUs, both Freescale HC08 family. The motors are just small 5V DC brush ones that's been driven at 7.0V, PWMed to 70% (PWM Frequency 800Hz). There are two motors for a differential drive setup. I'm measuring a total idle current of 800mA on the motors, the load current is about ...


Programming FLASH on the Freescale Coldfire

Started by Randy Yates in comp.arch.embedded4 years ago 23 replies

Folks, We need to store some non-volatile parameters across power-ups and I'm trying to determine how to programmatically write to FLASH in...

Folks, We need to store some non-volatile parameters across power-ups and I'm trying to determine how to programmatically write to FLASH in the MCF52235 Coldfire V2 processor (256KB). From the reference manual it looks like reads from the ENTIRE FLASH are disabled when updating (erasing/programming) any part of the FLASH, even if you're just updating one of the 32 8 KB sectors. But I'm not...


MPC870

Started by Martin Euredjian in comp.arch.embedded15 years ago 11 replies

I've been considering the idea of adopting the Freescale (a.k.a. Motorola) MPC870 processor for a board requiring ethernet, serial, USB (host...

I've been considering the idea of adopting the Freescale (a.k.a. Motorola) MPC870 processor for a board requiring ethernet, serial, USB (host and device), I2C and SPI connectivity, among other things. The processor would run FPGA-based signal processing hardware on the same board, handle configuration, firmware uploading and remote control/monitoring functions. One of the interesting thing...


683xx development kit - where to find?

Started by Vcc Ground in comp.arch.embedded14 years ago 1 reply

Hello I want to buy a 683xx development kit, a 68302 preferrably. Can anybody tell where I can find/order/buy them online? I checked the...

Hello I want to buy a 683xx development kit, a 68302 preferrably. Can anybody tell where I can find/order/buy them online? I checked the Freescale site and found a few but they are very expensive. I am looking for a cheap kit for use in my free time. Thanks. VG


MC9S12 : SCI programming

Started by karel in comp.arch.embedded14 years ago 11 replies

could anyone point me to a source of ideas on how to use the SCI serial port in mc9s12 parts? on the freescale site i did find a description of...

could anyone point me to a source of ideas on how to use the SCI serial port in mc9s12 parts? on the freescale site i did find a description of a monitor program AN2548.PDF (which i suppose to rely on RS-232 comm's) but, though the assembly listing is said to be available, i failed to find it on the site or elsewhere in the www does anyone know where to find AN2548SW1.ZIP? or can you poin...


simplest monitor/debugger for p2020?

Started by wzab in comp.arch.embedded8 years ago

Hi, I'm looking for a simplest monitor/debugger for freescale's p2020 processor. The sources should compile under gcc, and boot from SD...

Hi, I'm looking for a simplest monitor/debugger for freescale's p2020 processor. The sources should compile under gcc, and boot from SD (after boot_format processing) into SRAM. Does anybody know about such a tool? Maybe someone knows some coding examples for bare-metal applications for p2020 which I could use to start writing such a tool myself? -- Thank you very much in advance, WZab ...


newbie

Started by lear...@gmail.com in comp.arch.embedded14 years ago 1 reply

Hey All, I have a header file for MPC8xx freescale powerPC QUICC I uC (MPC885 specifically). I want to write a simple code to do a simple read...

Hey All, I have a header file for MPC8xx freescale powerPC QUICC I uC (MPC885 specifically). I want to write a simple code to do a simple read write for any of the INPUT/OUTPUT PORTs. I went through a documentation but I dont know how to make use of the header file to make my job easier. I am new to C/C++ so it will be great if someone can point me in the right direction. May be a small snip...


Freescale MPC860

Started by lear...@gmail.com in comp.arch.embedded13 years ago 2 replies

I am writing a simple SPI driver for this uC. I was wondering if someone can help me with a little bit of C code to perform a simple loopback...

I am writing a simple SPI driver for this uC. I was wondering if someone can help me with a little bit of C code to perform a simple loopback test or point me in the right direction. "The main obstacle is I dont know how to write RBASE and TBASE in SPI PRAM to point to RxBD and TxBD in DPRAM." I am following the SPI Master programming example given in the user manual of MPC860 documenta...


Using global float not working.

Started by eeboarder in comp.arch.embedded11 years ago 10 replies

I'm working with a Freescale MC9S12DG256B with MW CodeWarrior IDE in C. I am using a global float in a RTI to accumulate a value, but I...

I'm working with a Freescale MC9S12DG256B with MW CodeWarrior IDE in C. I am using a global float in a RTI to accumulate a value, but I keeps displaying 7271460400000000.... as the result of the calculation. Code snippet: top of file: //they are initialized to zero. float currentMCF; In RTI_ISR: // update minutes if(sec_ctr == 60){ sec_ctr = 0; mins_ctr = mins_ctr+1; ...


linking libraries to banked segments with cosmic c

Started by Randy Yates in comp.arch.embedded6 years ago

I'm using the cosmic c tools version 4.4.22 (for the Freescale 9S12 MCU) and would like to be able to link MY OWN libraries to banked...

I'm using the cosmic c tools version 4.4.22 (for the Freescale 9S12 MCU) and would like to be able to link MY OWN libraries to banked segments. I am thinking that if I compile the code that goes into the libraries with the +modf option, all functions will then be "far" and I can locate them in banked segments. However, I am not sure what technique to use in the linker command file (.lkf ...


CAN BUS INFO

Started by Fizzy in comp.arch.embedded14 years ago 19 replies

HI, I have a CAN bus archeitecture and want to know if i can check the age of message or freshness of received message. Transmitter does not...

HI, I have a CAN bus archeitecture and want to know if i can check the age of message or freshness of received message. Transmitter does not send any freshness bit with the data. Its receiver resposibility to check if the data is received at certain rate. ANY ideas are welcome because if stuck. I am using freescale S12 series. Thanks


MX31 GPIO

Started by Dread_Locks in comp.arch.embedded13 years ago 2 replies

Hello, I'm new to linux and I have MX31ADS board from freescale. I need to read and write to some GPIO ports and I was wondering how to do...

Hello, I'm new to linux and I have MX31ADS board from freescale. I need to read and write to some GPIO ports and I was wondering how to do it. I dont even know which pins on the MX31 chip are available to use, how to set the port direction, or read and write to the ports from a linux C program. Does any body know where I can get some information on how to do it? maybe some sample ...


Code Warrior newbie questions

Started by Ether Jones in comp.arch.embedded13 years ago

I'm new to Code Warrior. Using it for the first time to program an embedded app (Freescale MC9S08DZ60 microcontroller). Although it is...

I'm new to Code Warrior. Using it for the first time to program an embedded app (Freescale MC9S08DZ60 microcontroller). Although it is working well and I am making good progress, I have a few questions: 1) In the data window in the debugger, occasionally a weird symbol will appear immediately to the left of a data value. What is the meaning of these symbols? 2) In the data window ...


CodeWarrior for HCS12X - ANSI-compliant??

Started by Florian E. Teply in comp.arch.embedded12 years ago 10 replies

Hey folks, i got some strange problems with CodeWarrior for freescale's HCS12X family. On various occasions it complains about variable types...

Hey folks, i got some strange problems with CodeWarrior for freescale's HCS12X family. On various occasions it complains about variable types like "uint8_t" not being defined. As far as i know, uint8_t is required by ANSI-C though as some fixed-size type. Am i plain wrong here or does codewarrior behave strange indeed?? TIA, Florian


WLAN card for embedded power pc

Started by widi2000 in comp.arch.embedded12 years ago 3 replies

Can anyone recommend a WLAN card for the following system: - PowerPC freescale MPC5200 (PPC 603e core) - Linux kernel 2.4.25 (www.denx.de,...

Can anyone recommend a WLAN card for the following system: - PowerPC freescale MPC5200 (PPC 603e core) - Linux kernel 2.4.25 (www.denx.de, module linux_2_4_devel) - form factor: MiniPCI type III Until now, I have two old cards running on that platform (Hermes- and Prism-chipset). But these cards are discontinued. I have also tested a few newer cards - but without success. The Athero...


CANBUS Tx/Rx with data length > 8 bytes

Started by Marco T. in comp.arch.embedded4 years ago 63 replies

Hi to everybody! I should implement a function on my uC (Freescale MAC7121) that will receive and/or send data with length > 8 bytes: is it...

Hi to everybody! I should implement a function on my uC (Freescale MAC7121) that will receive and/or send data with length > 8 bytes: is it possible? I read on the datasheet that the message buffer is max 8 bytes, but I need to send and to receive more data. Thanks, Marco --------------------------------------- Posted through http://www.EmbeddedRelated.com


About ZigBee

Started by eryer in comp.arch.embedded9 years ago 2 replies

Hi, i want to use zigbee: i know only freescale ZigBee and i'm looking for better alternatives...For me it is very important (in order): 1....

Hi, i want to use zigbee: i know only freescale ZigBee and i'm looking for better alternatives...For me it is very important (in order): 1. Open source ZigBee stack (a stack with obfuscated source code is very difficult to use) 2. System on chip solution (micro 8bit+transceiver) (better at 868MHz) 3. to be used in very low power solution 4. low cost Any suggestion? Thanks in advance


Jazz Semiconductor Aquired by Acqucor - The Game's Afoot!

Started by Bill Giovino in comp.arch.embedded13 years ago 2 replies

Jazz Semiconductor, a wafer fab company, has been sold off to Acquicor: http://microcontroller.com/news/Acquicor_jazz.asp Put this together...

Jazz Semiconductor, a wafer fab company, has been sold off to Acquicor: http://microcontroller.com/news/Acquicor_jazz.asp Put this together with the recent Freescale acquisition, throw in a dose of Prexient Micro Devices, and you've got all the drama and intrigue of an episode of Dallas. Regards, Bill Giovino Executive Editor http://Microcontroller.com