 Tidak adalah Industrial IO dan Monser Tags Workshops Mereka akan mencari bagaimana untuk mengembar dan Linux Industrial IO sub-system driver Untuk seluruh sensor baru, dan bagaimana penggunaan penggunaan Bagaimanapun dengan penggunaan penggunaan penggunaan dan penggunaan penggunaan Ada perkara yang akan dihubungi adalah Pertamaan Pembezaan IO dan Pembezaan Software dan Hardware Dan Pembezaan Ringgis Bapak Ada beberapa kejadian yang dipercayai untuk memperbaiki penggunaan penggunaan penggunaan Atau memadai fungsi keperluan penggunaan penggunaan penggunaan Dia juga memadai beberapa sensor yang menggunakan fungsi keperluan penggunaan Pembezaan IO Terutama, bagaimanapun bagi subd Testament, H.R. Timer, software triggers dan data bagi penggunaan penggunaan Dalam ASI category yang mempunyai penggunaan penggunaan penggunaan Pembezaan Man telah mempercayai Selanjutnya dan juga menjumpai penggunaan penggunaan penggunaan penggunaan penggunaan penggunaan Selepas 10 tahun, perkara terbincang, termasuk penggunaan penggunaan penggunaan Perkuatan teknologi adalah kewangan podsir Dan sekarang, ada penggunaan mengumum Okey, saya akan kembali ke sini. Ya, saya akan kembali ke sini. Tapi, semoga saya menginsipkan kamu untuk menerima pembedahan industri iO untuk perasaan. Saya berhasil untuk mencari perasaan untuk iO. Saya berkongsi untuk iO selama dua tahun. Saya berkongsi dengan iO seharusnya untuk menerima perasaan dan perasaan untuk menenam. penipu-penipu sensor dan P8 sensor. Jangan lupa tanya pertanyaan di atas perbincangan. Jadi orang-orang yang mengenai perbincangan industri, jika ada orang yang mengenai penipu-penipu, orang-orang yang mengenai penipu-penipu untuk penipu-penipu. Penipu-penipu yang mengenai penipu-penipu untuk mengenai penipu-penipu, berat kecepatan, lebih daripada beberapa peribadi peribadi. Untuk mengenai penipu-penipu yang cepat, ia membuat mengenai penipu-penipu dari JPAO atau jenai penipu-penipu lain. Ia juga membuat perbincangan dan penipu-penipu untuk menghadap penipu-penipu yang mencari perbincangan dan mengenai penipu-penipu yang tidak dapat terjadi. Ia juga membuat perbincangan dan penipu-penipu. Pemiliki pilihan ini adalah Lovario. Saya akan membuat perbincangan dengan kaitan yang tak terlalu mudah. Ia sangat mudah mereka membuat perubahan dan perubahan. Ada banyak hal yang membuat perbincangan, tapi memang memang membuat perubahan. Dan jelas tidak perlu membuat perubahan dan mempunyai modifikasi untuk mempunyai penggunaan kegunaan kegunaan kegunaan dan kadang-kadang hanya mempunyai untuk mempunyai kegunaan kegunaan kegunaan yang lain. Jadi, biasanya ada sensor, tapi ada beberapa perkara yang tidak sebenarnya adalah sensor seperti metrometer, dac, dan clock generators. Sebabnya mereka di sana, sebabnya mereka akan berada di meselinya kekernal sub-system. Ada soalan? Jadi, ini adalah tempat yang akan berakhir dengan meselinya dan sebabnya mempercayai API terhadap menggunakan satu-satunya, lebih baik menggunakan input atau meselinya. Dan banyak devices Android yang telah menggunakan input-put drivers untuk I.O. Okey, ini adalah suatu perkara yang tidak sebenarnya ada sebuah sensor yang akan dipercayai dengan I.O. Dac, dac, tempur, meselinya yang berat tinggi dengan I.O. Sebenarnya, I.O. akan menggunakan pilihan yang tidak sebenarnya adalah pilihan yang sangat tinggi dengan I.O. Dac, pilihan kekernal, pilihan kekernal dan pilihan kekernal seperti ini dan pilihan kekernal yang biasanya menggunakan microcontroller tapi jenis cara untuk mempercayai pilihan kekernal. Baiklah, ini adalah suatu perkara yang akan saya menggunakan. Setiap data mempunyai channel ini. Jadi, sensor tempur mempunyai satu channel untuk mempercayai tempur. Jadi, kita juga boleh mempunyai pilihan kondisi. Saya mempunyai sebuah channel lain. Dan pilihan kondisi boleh menjadi pilihan software atau pilihan hardware. Pilihan yang beritahu anda bahawa ada data yang perlu dipercayai untuk pilihan pilihan. Ada juga pilihan single shot access yang tidak menggunakan pilihan pilihan tetapi mempunyai pilihan kekernal. Untuk pilihan gyroscope, jika anda mempercayai pilihan pilihan kondisi, anda akan mempercayai pilihan pilihan pilihan kondisi untuk menggunakan pilihan kondisi. Untuk ADC, anda menggunakan pilihan channel yang mempercayai pilihan kondisi untuk mempercayai data dari ADC. Ini telah dibuat untuk pilihan kondisi untuk mempercayai tempur untuk mempercayai pilihan kondisi. Jadi anda dapat tahu apakah anda mempercayai pilihan kondisi. Sebenarnya, anda membuat pilihan platform yang berlaku dengan pilihan ADC. Jadi, jika anda memakai IEO, anda mahu pastikan anda menggunakan pilihan hardware untuk mempercayai pilihan kondisi dan mempercayai pilihan kondisi. Jika anda tidak mempercayai pilihan kondisi, anda mahu menggunakan pilihan hardware. Ia tidak akan menggunakan pilihan kondisi untuk mempercayai pilihan kondisi sehingga anda mempunyai sebab yang penting. Untuk jika anda mempercayai pilihan kondisi yang tinggi, itu akan menjadi alasan yang akan menjadi IEO dan melalui hardware yang berlaku. Jadi, apakah yang menjadikan kondisi untuk mempercayai I2C atau spy? Kadang-kadang, saya mengenai pilihan kondisi yang mempunyai pilihan kondisi. dan harusnya mencari perangkat, keadaan, sesuatu yang ada di dalam sistem lain juga jika ia akan menjadi hardware software trigger biasanya ada interrupt lines off sensor untuk beritahu bahawa ada data yang perlu digunakan dari sensor dan memperbaiki buffer anda boleh menggunakan GPU untuk menggunakan itu atau ada yang anda mahu mencari tetapi anda tidak akan membuat keadaan, ia akan membuat keadaan anda boleh menggunakan hardware HR timer interrupt jadi ia akan membuat keadaan anda boleh membuat trigger sehingga 1s dan GPU ia akan membuat keadaan jadi adz akan menghasilkan channel 3 jadi yang lain yang anda boleh gunakan sambilan hardware monitor io atau baterai charger dan juga anda perlu membuat device yang mempunyai single shot reading atau trigger reading dan anda dapat membuat keadaan dan anda akan membuat keadaan untuk menggunakan io, pih dan beberapa slid yang diperlukan untuk menggunakan dengan keadaan anda akan membuat keadaan dan kemungkinan seperti yang dikatakan, dengan keadaan kecil, anda boleh menggunakan hardware monitor data tersebut perlu digunakan dari sensor jadi ia membuat keadaan perangkatan dan juga keadaan dan juga keadaan perangkatan untuk membuat keadaan untuk menggunakan perangkatan semua perangkatan mempunyai beberapa channel dan ia adalah yang ditutupi dan ia mempunyai untuk menampakkan untuk menggunakan perangkatan untuk menggunakan untuk membuat keadaan jadi kalau ada keadaan atau kemungkinan jika ada modifier untuk beberapa channel untuk beberapa channel ada kemungkinan yang kedua untuk menggunakan untuk menggunakan untuk menggunakan jika ada kemungkinan CO2 atau kemungkinan kemungkinan dan ada masalah dan ada masalah data yang anda dapat dari kemungkinan perangkatan untuk menggunakan apa yang bermakna jadi ada raw data dan juga ada offset ke data kemungkinan perangkatan atau proses jika anda tidak boleh jika data yang anda dapat dari sensor tidak mempunyai kemungkinan perangkatan atau apa yang anda perlu lakukan jurnal ini anda nak melakukan raw data dan melakukan perangkatan dalam pembicaraan cukup yakin adil untuk tidak famous It's definitely hard for an output. The heater control alert with humidity sensors to get constant moisture off the sensor. Alright, so I don't know how well you'll see this. So this is basically the definition of thermocouplers channels. So we define the type. The address is internal, so it's usually an offset. This is an offset into the spy reading. It should get from the sensor. You're defining the info mask. So basically the data you're getting from the sensor is raw and you have a scaling value that you have to define and do the processing in the user space. The scan type, so you know it's designed and you know it takes 16 bits of actual sample. And the real bits are 14, so we have to shift over right to and the data is big-end hand, which is important because if you could have a big-end sensor in the system where you have a big-end sensor or a big-end system, you have to make sure you define that. So this first channel here was the actual thermocoupler at the probe. And this one is the cold junction temperature. So it's the same thing, only you see there's a modifier. So we know that it's not the probe temperature. It's a ambient temperature off the cold junction point. It's pretty much the same except there's less resolution. And we find a timestamp. That's just a software timestamp in the CPU. So there's hardware, base, trigger, HR timer. And triggers can be mapped to multiple devices. So you basically typically do HR timer since you would set an interval of when you want all the buffers to be read. I'll be holding sensors to be read into their respective data buffers. And you can also chain triggers to trigger another polling of another device. And a driver can be a consumer or a provider of a trigger. So data is typically not processed. So that's like the structure four is at raw and scaling value. So you need to describe a few points in storage size the real size and the right shape of data and what the Indianess it is. Buffer data is the sensor typically inspired to see just a raw block of data read from the bus and this has the user space and the user space house is required to do the processing. The buffers are K5O bag. So that's basically means in the kernel it's not a ring buffer. If you start not reading data fast enough and you just keep pushing it in it's just not going to be there's no more data that's going to be pushed in until you start reading off the buffer. And this is useful before assault bombers or gyroscope because if your meter space is too slow to catch up maybe there's other interrupts happening Your best case is just to drop all those all those data points because they don't mean anything anymore because you're moving your phone and you can also increase the sample size for the buffer how many samples you want and their per device and also callback buffers they also allow IO drivers to communicate data to other kernel subsystems So here's a buffer handler it's an interrupt handler so for instance this one we called an HR timer trigger set to like 100 per second it's been called so this would actually lead a distance from a lighter make sure that it actually gets data and if it does it will push to the buffer the data that's raw in meters it's the current timestamp obviously this is in the trigger handler so it's not going to be there's going to be a few microseconds at least off then you tell user space that the trigger is done and so if you start reading you can return handles yeah so single shot access that was buffer so a single shot would be just a SysFS entry if you agree a single temperature reading that you have to process yourself but it wouldn't require you to set the buffer but some data can't be just read as one point like the sawrometer it's not really useful or for a similar chip here you need to have thousands of samples to actually report to matter because you're detecting a heartbeat and you need a couple thousand samples to actually know the pulse there's some secondary channels that have no application but a lot of these philosophy sensors require the entire block of data so it doesn't hurt to add those into the channel so here's an example of a capture so device zero is actually a thermo coupler and this would be a single shot reading of the temperature of the probe which is 98 but that's not 98 degrees perinit or Celsius that's the value you have to by 416 to get mill Celsius and same with this there's two scaling values 98x250 and 416x62.5 yeah so here's how it would process into mill Celsius it's a weird unit because again it's backwards compatible so that's why it's not and also you don't want to have putting points in the kernel so we have those process come out to 24.5 and 26 Celsius alright so if that's a little different this is the nioptal interface it's different from others because they don't signal the value of all data it's just basically direction information like free fall of a phone and this is how you would define those threshold type and this rising and falling and if you want to enable and if there's a you want to enable it and what the value means yeah so i have consumer channels they allow typically AC reading to be read somewhere else in the kernel it does the processing of the scaling value for you so you have the voltage and you can determine if you need to charge or if you're going to charge feel good to use that even some touch screen sir just a quick question about the unit yes so not defined as a special trigger for a volume on the sensor it won't cause an event and that is generated in the ground do you bet? yeah so typically you would have a device that would have interrupt you would have interrupt handler it could be a separate line or it could be a general interrupt and the handler would push that event out and your user space how would be waiting for any events in that case so you know but the event will be triggered without the use of the kind of activation that will activate the sensor it will still happen but you won't you won't see it it will still be registered for the events you need your user space how it needs to be reading it at the time because it's not in a buffer events are not in a buffer so they're like one off it's a danger question okay so scaling will be handed so you don't have to worry about what the old readings are getting like i said data should be in process channel type raw is typical fulling points there's times where you need to processing in the kernel this typically only happens for some sensors that have nonlinear scales there's yeah it was one of them it does it needs to have the temperature reading at that specific point to give you a valid reading or pressure reading so in that case we do the processing in the kernel so SI units are typically used they're usually not except for like mill Celsius they're typically not having that in addition of mill or micro mill Celsius mill volts resistance meters they're all documented in ABI typically you make sure you want to ABI document to see what the actual current unit is i don't assume i just assumed the reading was in Celsius and there was something correct i guess there's some utilities to help you debug list IO just numerates all the devices that are on your IO bus event monitor for testing you know free fall generic buffer just to read data off the buffer and yes there's an example with list IO so we show we have a thermocoupler on this board the channel you have are raw and temperature raw and ambient raw and also there's a chemical sensor on here so we see concentration CO2 parts per million which parts per billion and the underscore input it needs its process and the reason is to be backwards to how to work hardware monitor that's how they represent their data into user space and there's a software trigger so this is how you start a so the HR timers actually configure us which basically means that it's a run time you can change things that happen in the kernel on the bed during run time on the fly so we create a trigger we change the hertz to 50 hertz sampling frequency we tell our device that we want to have a trigger zero which is the same what elements we want to read off the sensor we're reading all of them and finally we enable the buffer and that's when the data starts flowing into the buffer until that happens it's not enabled so everything is no this is just to configure just start running yeah so this is we show the buffer running this is the roll of data coming out you have to pay attention to the padding and that's what all the elements you have enabled let's add it to 8 bytes because time stamp is 8 bytes if you get it disabled it will truncate to this so this is the same data from before we're just doing the sysfs scaling this is what you do in the buffer scaling you would read that hex so that hex 188 and you enumerate scan index into it is this so this basically means big end end sign 14 bit 16 storage shift over to right so you basically did that equation there and you just fix how to get into actual Celsius it's a little more user friendly generic application so it does a scaling for you okay I see the cold junction actually the probe juncture which is ironic that one is higher but it's because it's closer to the board and also the time stamp and nanoseconds okay so for the time so my demo here is a big alone using this one and also using lilyo which is the user space how oh and also it's going over it's also a daemon so this is actually going over a network and the processing is done on my mat so this works and then graph is done problem at the best it's not exactly user space applications so let's take a second to just upload photodiode to an ADC that is doing a ratio of low temperature sample temperature and problem is if I'm talking it changes the result because if everybody is not here they tell you not to talk so yeah so this is basically my demo didn't work at all so it's basically to this infrared LED and also the red LED is used for the ratio between the infrared and the red LED is used for the blockchain and the infrared one is used solely for the heart rate so in conclusion IO is the solution for writing fiber for sensors especially ones that do a lot of high speed updates and need to give data to the user space there's really nothing what limit IO can do there's some weird niche drivers the only one I think I've ever got rejected is a fingerprint scanner one which didn't really fit anywhere else also patches are welcome and also is the main kernel they all play that difficult to keep it's also nice so is there any questions? set up of the demo so the driver for the fingerprint-side driver for the factory leader was on the vehicle and then on the vehicle we just go this is running late so that's it one or two of those points it means nothing but you're reading thousands of them yeah so that's running there's a demo running on here that basically pushes it over the network and you can enumerate it in this yeah so you see the straight work viewers how to limit there's a bunch of device drivers that's pretty much the same but could you be supported to friendly at all great places she built me too so you can so yeah well and all the code you can be licensed so how do you do sensors in a previous date? we had a couple of sensor frameworks but they all turned out to be more difficult questions to answer the frameworks have been mined so race edition was reporting to user space or multiple sensors reporting them thinking data turned out to be very difficult questions now that we don't have a sensor framework that works currently but wouldn't be like one maybe this is it or use a reference so i will i just want to ask how does this IO compared to usb it's like you record the data from a sensor and then you transfer it over the exterior or well sensor doesn't care IO doesn't care what you get from i mean typically sensors or ICC or spy usb because you're doing a processing user space anyway is this still in staging no IO a couple of years ago was still in staging but there's a lot of stuff in staging that's dying there isn't a to-do list a to-do list i'm sure there's a to-do list there's a couple hundred sensors now it's supported in IO that isn't staging so what drives the board is it enterprise, painfist well it's mostly IO team mobile space does it distinctly be customizable or servicing which is also a sensor framework i'm not really familiar with this is that a while ago or even a few years so it's at least a year and it's out of range