Hi everyone,

I'm new here, so hello every body I'm 23 years old in Master of Science in England. I came here to ask you few questions about combination with Mbed and MRF24J40MA. In fact I bought a MRF24J40MA board and I would like to transmit an information with it. I never used microcontroller before so my questions will be very basic for the moment.

How can I proceed to connect my mbed with MRF24J40MA: I though to: - read the datasheet to find pins - use an appropriate hardware, software (I know there is a topic with bibli on it with C++)

I'm little confuse, so can you help me.

Regards Maxime

nobody can answer me?

Which of your sentences is the question? What's your problem?

Thanks to answer me. I read this link: http://mbed.org/users/hilgo/libraries/MRF24J40/lmpl4r

I just would like to know, to connect my mbed and my mrf24J40, I only have to enter this libraire in a C++ and made different class? I'm a little confuse.

Regards

I don't think that this is the correct library 4u. Just took a short look the the MRF24J40MA data sheet (telling me it's zigbee compatible) with 1 pin for serial in and 1 pin serial out. So I would use this link as a 1 read: http://mbed.org/cookbook/XBee

The XBee module uses a serial protocol and the MRF24J40 has a SPI interface. So you cannot use one instead of the other.

The MRF40J40 library I publised om mbed.org can be used to connect an mbed to an MRF24J40MA module. Using two mbeds and two MRF24J40 modules, you will be able to send wireless data between them. You can see the example in the documentation that can be found with the library how to do this.

Thanks a lot for your answer, I'm sorry to reply now but I forgot my password. I actually finishing my literature review and will start my project tomorrow. I will let you know about my progress.

Thanks a lot again and sorry for the delay to my answer

HI, I actually working on the transmission. I would like to know few things.

- I use two AC163028 - BOARD, PICDEM Z RF (http://fr.farnell.com/microchip/ac163028/board-picdem-z-rf/dp/1615689) bought there is 2 months with two mbed, is it enough to transmit an information, I found information about MRF24J40 but not about the AC163028.

- I read two different datasheet for the MRF24J40:

the first one wrote in 2006 that I think you used (http://pdf1.alldatasheet.com/datasheet-pdf/view/199134/MICROCHIP/MRF24J40-IMM.html)

the second one wrote in 2008 (http://ww1.microchip.com/downloads/en/DeviceDoc/39776C.pdf)

You wrote your mbed lib in 2011, so my second question is have you a old Zigbee or is it possible to use your lib with a new version of Zigbee.

Thanks a lot

I use MRF24J40MA. The AC163028 looks like an MRF24J40MA board soldered on a simple board to use it with the microchip demo board. So I expect it to work.

HI,

Need some help..!

Am using two MRF24J40MA and two mbed and trying to send wireless data between them. but can't figure it out! have read this http://mbed.org/users/hilgo/libraries/MRF24J40/lmpl4r. but still doesn't work for me!!

Regards kevin

You can send me an e-mail here: nikos3330@hotmail.com, then we could discuss about it.

Thanks for your replay!

Regards Kevin.

Hi,

To test the library, I use two breadboards with one mbed and one MRF24J40MA each. On both mbeds, I run the code from the example in the documentation: http://mbed.org/users/hilgo/libraries/MRF24J40/lmpl4r/docs/classMRF24J40.html

Each mbed will try to send one packet each second. LED2 is toggled each packet. Upon reception of a packet, the mbed will toggle LED1. So two blinking LEDs on each mbed indicates everything is fine.

Hope this helps, regards, Jeroen.

Thanks for your replay,

Just made it today around 12:30pm, the documentation is really perfect, well done Jeroen! I was having a problem on the circuit. The MRF24J40MA pins are quite sensitive.

Thanks, Kevin!

Hey Kevin, can you give me your address mail to exchange about the MRF24J40.

Regards. nikos3330@hotmail.com