RF transceiver ideas

Started by Mohammed El Korek in 68HC1211 years ago 5 replies

Hello everyone, I am just beginning to look into the possibility of interfacing an RF transceiver into a Minidragon+ board.. it's going to be...

Hello everyone, I am just beginning to look into the possibility of interfacing an RF transceiver into a Minidragon+ board.. it's going to be my first time doing it and I would just like to know if anyone had done this before ... i am trying to see what are the applications you guyz have done using an RF transceiver and a HC12-based platform.... any pitfalls, potential problems, external c...


What function/pins to use for a transceiver??

Started by gogosgeorge in 68HC1213 years ago 29 replies

Hi guys, What can I use for transmitting and receiving via a transceiver? I have 2 9s12E128 Development Boards, and have 2...

Hi guys, What can I use for transmitting and receiving via a transceiver? I have 2 9s12E128 Development Boards, and have 2 RF-NRF401 422Mhz single chip RF-Transceivers. I want to hook one to one Board and Transmit, and the other board with the other transceiver to re


BDLC on 9S12DP256 - transceiver delay?

Started by ctrobot28 in 68HC1214 years ago 1 reply

I'm using the MC33390 transceiver, and not sure of correct setting for the DLCBARD register delay bits. Can anyone give me a...

I'm using the MC33390 transceiver, and not sure of correct setting for the DLCBARD register delay bits. Can anyone give me a number that's known to work with this transceiver? (I'm now using 0x09 for a 18us delay.) Is the setting really critical or should I expect to recei


ABOUT CAN CIRCUIT

Started by amit shrigondekar in 68HC127 years ago 3 replies

Hi , Can any body please tell me how to connect two MC9S12C32 for CAN communication I read about its documentation it says.. Each CAN...

Hi , Can any body please tell me how to connect two MC9S12C32 for CAN communication I read about its documentation it says.. Each CAN station is connected physically to the CAN bus lines through a transceiver chip. The transceiver is capable of driving the large current needed for the CAN bus and has current protection against defected CAN or defected stations Q.1) So does that me...


e128 irda to palm/pocket pc

Started by eeetee2000 in 68HC1212 years ago 4 replies

hi: i'm using the e128 processor that supports irda. i can take two of these devices and communicate back and forth with a standard...

hi: i'm using the e128 processor that supports irda. i can take two of these devices and communicate back and forth with a standard i/r transceiver on each. scoping the signals (tx and rx) indicates that it is indeed 3/16 pulse time as per spec. so i'm assuming the hardware and code are working as they should. i need to be able to c


Re: using the SCI with my transceiver

Started by gogosgeorge in 68HC1213 years ago 6 replies

Guys, just to let you know, the reason why I was asking questions before about the SCI, and how everyone was telling me to...

Guys, just to let you know, the reason why I was asking questions before about the SCI, and how everyone was telling me to read the manual, On the cd, there was no section on the SCI, just the SPI!!! Thats why I was getting confused. I looked at freescale, and found


OT - SDLC Communications

Started by Jeff McKnight in 68HC1211 years ago 1 reply

I need to implement some SDLC communications and I would like to use the HC12 because I am already familiar with it, have all the debug tools...

I need to implement some SDLC communications and I would like to use the HC12 because I am already familiar with it, have all the debug tools etc ... Anybody have any good ideas how to do this ? I have looked for some sort of SDLC transceiver / translator chip but haven't had any luck. Any comments would be appreciated. Thanks, Jeff ------------------------ Yahoo! Groups Sponsor ----...


bus interface for 9S12DP256 BDLC

Started by ctrobot28 in 68HC1214 years ago 1 reply

To interface the 9S12/BDLC to the j1850 bus, is an MC33390 transceiver the right part? Or is it possible to do it without this? ...

To interface the 9S12/BDLC to the j1850 bus, is an MC33390 transceiver the right part? Or is it possible to do it without this? (Since I can't find anyplace that has it in qty. 1.) Thanks, Patrick


IrDA transceiver

Started by linktek in 68HC1214 years ago 8 replies

Hi All, Does anyone know if the HCS12 has IrDA capabillities in the works??. I am looking for a all inclusive solution for...

Hi All, Does anyone know if the HCS12 has IrDA capabillities in the works??. I am looking for a all inclusive solution for my IrDA interface with my HC12. I dont seem to find a device that integrate at least the frontend(wave form shaper) with the pin diodes. Ideally I would have


CAN tranceiver recommendation - 3.3v

Started by blewis999 in 68HC1211 years ago 1 reply

Can anyone recommend a CAN transceiver for that will run at 3.3v? We are using the MCP2551 from microchip and it works fine, however it will...

Can anyone recommend a CAN transceiver for that will run at 3.3v? We are using the MCP2551 from microchip and it works fine, however it will only run at 5.0v and we are going to 3.3v. Thanks Bob ------------------------ Yahoo! Groups Sponsor --------------------~--> Great things are happening at Yahoo! Groups. See the new email design. http://us.click.yahoo.com/TISQkA/hOaOAA/yQLSA


slightly OT q. for BDLC experts

Started by ctrobot28 in 68HC1214 years ago 1 reply

I'm using an MC33390 transceiver between the 9S12DP256 and the J1850 bus. The datasheet for the 33390 shows a recommended...

I'm using an MC33390 transceiver between the 9S12DP256 and the J1850 bus. The datasheet for the 33390 shows a recommended application circuit, with a 25V MOV (varistor) across the output. But it also specifies an output capacitance of 470 pf. I cannot find a MOV with that


I2C Line following sensor - need help

Started by jordnam128 in 68HC129 years ago

I am having trouble communicating the Line Following sensor with an HCS12 microcontroller. The controller does have the proper...

I am having trouble communicating the Line Following sensor with an HCS12 microcontroller. The controller does have the proper transceiver module and registers associated with it. It is able to send out the code to the sensor but does not receive proper signal back. Here is the code with comments. Please help if you can. #include #include #define TERMINAL_TIMEOUT


MC33390 - DP256 BDLC problem

Started by Rob Milne in 68HC1212 years ago

Is anyone familiar with the MC33390 J1850 transceiver and DP256 BDLC combo? I'm using a standard J1850 simulator/monitor to test my system ...

Is anyone familiar with the MC33390 J1850 transceiver and DP256 BDLC combo? I'm using a standard J1850 simulator/monitor to test my system and can successfully send/receive frames so I assume my BDLC driver is constructed properly (based on HC08 code in Moto doc AN1731). What has me baffled are the hw hacks I've had to use to make things work. My hw de


9s12c32 Boot mode VS. Run mode

Started by Steven Bak in 68HC1214 years ago 3 replies

I need a 5ms delay before sending a signal to a sonic transceiver. When I use codewarrior to start the program i get my 5ms delay...

I need a 5ms delay before sending a signal to a sonic transceiver. When I use codewarrior to start the program i get my 5ms delay (I use a for loop for the delay). When I switch to Run mode and start the program, the delay was much longer (30ms i think?). Why does execution apear


DKIT 9S12C32 common ground problems / hardware.

Started by Steven Bak in 68HC1213 years ago 1 reply

I have interfaced an ultra-sonic transceiver to my mic. PORTT channel 3 is pulled high to send send the sonic pulse, PORTT ...

I have interfaced an ultra-sonic transceiver to my mic. PORTT channel 3 is pulled high to send send the sonic pulse, PORTT channel 7 is polled to recieve the echo. The transcevier measures distances perfectly on two conditions: 1. The common ground is connected to the ground