RS232 on PocketPC

Started by Joris Dobbelsteen in comp.arch.embedded13 years ago 11 replies

Dear, I'm looking for a handheld PC running Windows (CE/Mobile) with a RS232 connection. Or unless someone can inform me about whether a...

Dear, I'm looking for a handheld PC running Windows (CE/Mobile) with a RS232 connection. Or unless someone can inform me about whether a USB-to-RS232 device works on these devices? Thank you, - Joris


Need a RS232 PCI card that works with optos

Started by Rumpelstiltskin in comp.arch.embedded8 years ago 3 replies

I have test equipment with optically isolated RS232 ports. Seems modern RS232 ports do not support +/-12V. They all seem to be less than +/-8V,...

I have test equipment with optically isolated RS232 ports. Seems modern RS232 ports do not support +/-12V. They all seem to be less than +/-8V, many only +/-5V. Anybody know of a cheap source for +/-12V RS232 PCI serial boards? What ever happened to 1488/1489 serial drivers?


RS232 VB6 HELP!

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

i have a microcontroller which i want to interface to my PC thorugh VB using the rs232 connection.. i wish to use the RTS/CTS as well as the DTR...

i have a microcontroller which i want to interface to my PC thorugh VB using the rs232 connection.. i wish to use the RTS/CTS as well as the DTR signal pins from the rs232.. 1.RTS will be used to simply reset/start the microconotroller application(rs232 output) through a port input pinof the mcu 2.CTS will be used to simply indicate the level of a certain mcu output pin after starting the m...


i2c/rs232 converter

Started by Raphael in comp.arch.embedded14 years ago 5 replies

Does anyone know of a way to put an rs232 ascii data stream onto an i2c bus as a slave device. For example, I have an i2c bus which has a...

Does anyone know of a way to put an rs232 ascii data stream onto an i2c bus as a slave device. For example, I have an i2c bus which has a master already. I need to give this master the data which is coming from an rs232 device, the problem is that all the rs232 to i2c converters I've seen are masters which assume it'll be plugged into a PC. I assume that I need to convert levels with a M...


GSM cell phone with RS232 data interface ??

Started by Anonymous in comp.arch.embedded8 years ago 6 replies

Does anyone know of a modern GSM phone which still has an RS232 data cable available for it ? (Most have gone to USB .. I want to...

Does anyone know of a modern GSM phone which still has an RS232 data cable available for it ? (Most have gone to USB .. I want to send SMS messages from my embedded device which only has a RS232 port) Thanks, Stuart


RS232 software virtual hub

Started by pozz in comp.arch.embedded2 years ago 4 replies

I often work on small electronic devices that communicates over a multi-drop half-duplex two-wires RS485 network. I usually try to compile...

I often work on small electronic devices that communicates over a multi-drop half-duplex two-wires RS485 network. I usually try to compile all the projects for the developing Windows machine (I use mingw as the compiler). Simulating and mimic the hardware in some way. The best simulation for the RS485 is a typical RS232 port with a RS232-RS485 attached (actually it is a very cheap USB-...


Using USB instead of RS232 on embeded project

Started by Art K6KFH in comp.arch.embedded13 years ago 23 replies

I am developing a product that requires a serial port to transfer a few bytes of data to a host pc on a repetitive basis. Currently...

I am developing a product that requires a serial port to transfer a few bytes of data to a host pc on a repetitive basis. Currently using 115kbaud on an RS232 port on my board and that works fine. A little slower is ok too. Some feedback has indicated that a USB port would be an attractive alternative. Someone commented that a "chip" for USB is about the same expense as RS232. I have zer...


RS-485 Troubleshooting

Started by RahulS in comp.arch.embedded12 years ago 16 replies

Hi, I am using Rabbit development board which has separate ports for RS232 and Rs485. Right now i am using a single port both as RS232 as well...

Hi, I am using Rabbit development board which has separate ports for RS232 and Rs485. Right now i am using a single port both as RS232 as well as RS485. The port works fine for RS232 signals but for RS485 signals, the differential output is not proper.I think there is some problem with the differential voltages. Please help.


Four RS232 ports on PIC

Started by Miem in comp.arch.embedded11 years ago 3 replies

Hi, I want to ask expert advise how can I create four RS232 interface on a PIC microcontroller? (I'm planning to use...

Hi, I want to ask expert advise how can I create four RS232 interface on a PIC microcontroller? (I'm planning to use PIC18F6680) Thanks, Miem Chan miemchan at gmail . com


I need 1 USB to many RS232 Convertor?

Started by in comp.arch.embedded9 years ago 3 replies

I've an embedded system with Linux running on an ARM9 MCU and i need to design an interface card to communicate with cards like 7816...

I've an embedded system with Linux running on an ARM9 MCU and i need to design an interface card to communicate with cards like 7816 smart cards. I can only use USB interface of the system and i can communicate with cards via rs232 protocol. do you have any idea to convert USB port of this sytem to many RS232 intarfaces without using a MCU like unit. i thought about using a USB Hub IC, and ma...


how to extract +12V from RS232

Started by Marcellus Pereira in comp.arch.embedded13 years ago 7 replies

Dear ALL, I'm trying to use the ADuM1301 to isolate my embedded system from the PC. How can I extract +12V from RS232 DB9? With two diodes?...

Dear ALL, I'm trying to use the ADuM1301 to isolate my embedded system from the PC. How can I extract +12V from RS232 DB9? With two diodes? But in what pins? Thanx, Marcellus


need TCP/IP, USB, and RS232 snooper

Started by kathy in comp.arch.embedded10 years ago 4 replies

Could anyone tell me where I can find free software for monitoring the TCP/IP, USB, and RS232 data traffic?

Could anyone tell me where I can find free software for monitoring the TCP/IP, USB, and RS232 data traffic?


RS232 to Flash logger

Started by Don in comp.arch.embedded12 years ago 1 reply

Hi All, Anyone know of a readily available commercial product which can log RS232 data & store it on a removable flash card i.e.. SD /MMC/ XD...

Hi All, Anyone know of a readily available commercial product which can log RS232 data & store it on a removable flash card i.e.. SD /MMC/ XD etc. The instrument will be writing ASCII CSV strings. I have a cct etc for an AVR but I need to buy a few in a hurry & just have it work. Cheers Don


Live Video Feed over one RS232 line (Rx or Tx)

Started by GregNash in comp.arch.embedded8 years ago 2 replies

Hi all, I have an idea to try and transmit live video camera data over one RS232 (either Tx or Rx) line. The problem is that I don?t know how to...

Hi all, I have an idea to try and transmit live video camera data over one RS232 (either Tx or Rx) line. The problem is that I don?t know how to go about processing the camera data. If the camera data was transmitted over an i2c bus, then this would be possible (as per http://www.gedanken.demon.co.uk/rs232-converters/i2c.html) but I?m not sure whether cameras transmit pixel data over i2c.


RS232 between PC and embedded MPU

Started by js1180 in comp.arch.embedded13 years ago 9 replies

What is the best method to have a PC and embedded MPU communicate with RS232? I have a HC08 that doesn't have SCI, so it would all have to be in...

What is the best method to have a PC and embedded MPU communicate with RS232? I have a HC08 that doesn't have SCI, so it would all have to be in software. There are probably ROM routines that would help but I haven't been able to find any documentation on them. This seems like it should be a "cut and paste" job. Maybe I have to code it myself. On the PC side I was thinking of using Visu...


6802 - RS232

Started by Anonymous in comp.arch.embedded11 years ago 9 replies

hi everyone, I am working on a project which has a 6802 processor and standard ram and eeprom (not decided which bands yet). I wonder If I...

hi everyone, I am working on a project which has a 6802 processor and standard ram and eeprom (not decided which bands yet). I wonder If I can write sofware for 6802 in PC and can send it with rs232 port to eeprom.


RS232 Development Board

Started by ratemonotonic in comp.arch.embedded10 years ago 13 replies

Hi All , Does any one know an off the shelf (and cheap) development board with 3 RS232 ports? Thanks in advance for any help. Rate

Hi All , Does any one know an off the shelf (and cheap) development board with 3 RS232 ports? Thanks in advance for any help. Rate


Q wrt Bluetooth, USB, RS232 and controllers

Started by bit eimer in comp.arch.embedded13 years ago 10 replies

Hi all, I'm new to this forum - hope to find some answers/help on the following: I doing a project in which a laptop needs to communicate...

Hi all, I'm new to this forum - hope to find some answers/help on the following: I doing a project in which a laptop needs to communicate with a remote PIC-based device. I had originally planned to use RS232 at each end talking through a pair of 900 MHz Linx transceivers. Since this was to be a one-off prototype, I kind of ignored the regulatory issues. Now, I'm thinking that maybe I...


RS232/485 impromptu survey.

Started by Not Really Me in comp.arch.embedded12 years ago 20 replies

How popular is that old standby async/sync serial data in new embedded designs? I know there are lots of other technologies coming into play...

How popular is that old standby async/sync serial data in new embedded designs? I know there are lots of other technologies coming into play from ethernet to wireless, USB, etc., but what percentage of your new designs are using RS232 or RS485? I still see it on almost every project. If not as an intended interface then at least for debugging. Your comments are appreciated. Scot...


Wanted: Linux embedded module w/ RS232 and ethernet

Started by Udo Giacomozzi in comp.arch.embedded13 years ago 8 replies

Hello everybody, can somebody suggest me a embedded linux module with RS232 and Ethernet interfaces? Not much more is needed. The RS232...

Hello everybody, can somebody suggest me a embedded linux module with RS232 and Ethernet interfaces? Not much more is needed. The RS232 interace is used to attach a GPRS modem module. I want to use one of the following configurations: 1 - FTP server for the ethernet side, upload then via GPRS to another FTP server or: 2 - daemon that loads a FTP file from the ethernet side a...