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Forum Index : Microcontroller and PC projects : MM I2 bus help
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| Eloclegin Newbie  Joined: 01/07/2012 Location: United KingdomPosts: 25 |
Newby to this forum. loving my Maximites. Can anyone give me advice on interconnecting 2 MMs. I have MM running superbly standalone (includes reading Time from an Ext RTC using I2). I would like to hang a second MM on the I2 bus and "pull" some occassional data from the main MM, and then go off and do something different with this data. I assume best way is to connect the second MM via i2 bus and make second MM as a Slave. Can anyone give me some detailed advice and pointers. My knowledge of I2 is v weak and there seem to be a ton of options, most of which I dont need to use. i just want to define a bus address in the Slave MM and then write out some data (about 20 variable values, every 10 secs or so, from a loop) from the Master MM. Also, if the Master MM writes out some data to the slave MM on I2, does the slave MM already need to be awaiting the data (at an appropriate stage in its own prog) or will the data go to some register space at the Slave MM? If so, where? Can anyone offer me some help, advice, sample code etc.. Thank you in advance. |
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donmck Guru  Joined: 09/06/2011 Location: AustraliaPosts: 1313 |
As no one had come up with an an answer to assist at this point, have a read of: http://www.duinomite.com/serial-communication-between-two-du inomites-a-tutorial/ This gives an example of two DuinoMites communicating via serial comms. You will need to select the appropriate pins to suit a MaxiMite, but in principle, it should work fine. Don... https://www.dontronics.com |
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| JohnS Guru Joined: 18/11/2011 Location: United KingdomPosts: 3801 |
I expect I2C could work - the first step would be to learn I2C in detail. I think there would be no buffering by the hardware and the slave would have to wait / perhaps poll for the master wanting it, but there's no substitute for learning I2C. John |
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