Understanding the CAN Bus












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I am looking to write an application that works with the J1939 protocol which is part of CAN (Controller Area Network) for vehicle engines. I am reading on this but I am getting some conflicting information in regards to the requirements of communicating here with this Controller Area Network, including reading and transmitting signals this would require a specialized microcontroller and other websites saying that this isn't required but just a connection to a computer. So which is it?










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migrated from superuser.com Jan 12 at 16:59


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  • You need software to communicate on the can bus, an depending on how much you can do on the bus how sophisticated the software needs to be.

    – Moab
    Jan 12 at 16:45











  • BTW - Welcome to Motor Vehicle Maintenance & Repair!

    – Pᴀᴜʟsᴛᴇʀ2
    Jan 12 at 17:25











  • Do a search on here, there are several posts on this topic, for example : mechanics.stackexchange.com/q/21748/10976

    – Solar Mike
    Jan 12 at 17:48
















0















I am looking to write an application that works with the J1939 protocol which is part of CAN (Controller Area Network) for vehicle engines. I am reading on this but I am getting some conflicting information in regards to the requirements of communicating here with this Controller Area Network, including reading and transmitting signals this would require a specialized microcontroller and other websites saying that this isn't required but just a connection to a computer. So which is it?










share|improve this question















migrated from superuser.com Jan 12 at 16:59


This question came from our site for computer enthusiasts and power users.



















  • You need software to communicate on the can bus, an depending on how much you can do on the bus how sophisticated the software needs to be.

    – Moab
    Jan 12 at 16:45











  • BTW - Welcome to Motor Vehicle Maintenance & Repair!

    – Pᴀᴜʟsᴛᴇʀ2
    Jan 12 at 17:25











  • Do a search on here, there are several posts on this topic, for example : mechanics.stackexchange.com/q/21748/10976

    – Solar Mike
    Jan 12 at 17:48














0












0








0








I am looking to write an application that works with the J1939 protocol which is part of CAN (Controller Area Network) for vehicle engines. I am reading on this but I am getting some conflicting information in regards to the requirements of communicating here with this Controller Area Network, including reading and transmitting signals this would require a specialized microcontroller and other websites saying that this isn't required but just a connection to a computer. So which is it?










share|improve this question
















I am looking to write an application that works with the J1939 protocol which is part of CAN (Controller Area Network) for vehicle engines. I am reading on this but I am getting some conflicting information in regards to the requirements of communicating here with this Controller Area Network, including reading and transmitting signals this would require a specialized microcontroller and other websites saying that this isn't required but just a connection to a computer. So which is it?







can-bus






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edited Jan 12 at 17:24









Glorfindel

2021210




2021210










asked Jan 12 at 16:29







latul











migrated from superuser.com Jan 12 at 16:59


This question came from our site for computer enthusiasts and power users.









migrated from superuser.com Jan 12 at 16:59


This question came from our site for computer enthusiasts and power users.















  • You need software to communicate on the can bus, an depending on how much you can do on the bus how sophisticated the software needs to be.

    – Moab
    Jan 12 at 16:45











  • BTW - Welcome to Motor Vehicle Maintenance & Repair!

    – Pᴀᴜʟsᴛᴇʀ2
    Jan 12 at 17:25











  • Do a search on here, there are several posts on this topic, for example : mechanics.stackexchange.com/q/21748/10976

    – Solar Mike
    Jan 12 at 17:48



















  • You need software to communicate on the can bus, an depending on how much you can do on the bus how sophisticated the software needs to be.

    – Moab
    Jan 12 at 16:45











  • BTW - Welcome to Motor Vehicle Maintenance & Repair!

    – Pᴀᴜʟsᴛᴇʀ2
    Jan 12 at 17:25











  • Do a search on here, there are several posts on this topic, for example : mechanics.stackexchange.com/q/21748/10976

    – Solar Mike
    Jan 12 at 17:48

















You need software to communicate on the can bus, an depending on how much you can do on the bus how sophisticated the software needs to be.

– Moab
Jan 12 at 16:45





You need software to communicate on the can bus, an depending on how much you can do on the bus how sophisticated the software needs to be.

– Moab
Jan 12 at 16:45













BTW - Welcome to Motor Vehicle Maintenance & Repair!

– Pᴀᴜʟsᴛᴇʀ2
Jan 12 at 17:25





BTW - Welcome to Motor Vehicle Maintenance & Repair!

– Pᴀᴜʟsᴛᴇʀ2
Jan 12 at 17:25













Do a search on here, there are several posts on this topic, for example : mechanics.stackexchange.com/q/21748/10976

– Solar Mike
Jan 12 at 17:48





Do a search on here, there are several posts on this topic, for example : mechanics.stackexchange.com/q/21748/10976

– Solar Mike
Jan 12 at 17:48










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What are you wanting to run the software on? Microcontrollers are normally used in this situation because processing is required, however if you're wanting to connect with a PC then the computer can handle the processing for you. There are software suites available for pc in fact that do exactly this. Those diagnostic systems at repair shops are usually just laptops with a breakout cable.






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    What are you wanting to run the software on? Microcontrollers are normally used in this situation because processing is required, however if you're wanting to connect with a PC then the computer can handle the processing for you. There are software suites available for pc in fact that do exactly this. Those diagnostic systems at repair shops are usually just laptops with a breakout cable.






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      What are you wanting to run the software on? Microcontrollers are normally used in this situation because processing is required, however if you're wanting to connect with a PC then the computer can handle the processing for you. There are software suites available for pc in fact that do exactly this. Those diagnostic systems at repair shops are usually just laptops with a breakout cable.






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        What are you wanting to run the software on? Microcontrollers are normally used in this situation because processing is required, however if you're wanting to connect with a PC then the computer can handle the processing for you. There are software suites available for pc in fact that do exactly this. Those diagnostic systems at repair shops are usually just laptops with a breakout cable.






        share|improve this answer













        What are you wanting to run the software on? Microcontrollers are normally used in this situation because processing is required, however if you're wanting to connect with a PC then the computer can handle the processing for you. There are software suites available for pc in fact that do exactly this. Those diagnostic systems at repair shops are usually just laptops with a breakout cable.







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        answered Jan 12 at 22:12









        John LordJohn Lord

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