zaordsword Posted February 1, 2021 Report Share Posted February 1, 2021 Hi here ! I am trying to modify the velocity of all notes of a DIn module with MIDI128 with a I2c sensor pressure meter type BMP280. Do you have any idea for how to make that ? I am using the MIDIo128 program ! Thanks ! Quote Link to comment Share on other sites More sharing options...
zaordsword Posted February 10, 2021 Author Report Share Posted February 10, 2021 (edited) Hi here, Anyone can help me ? Any one have any idea ? Thanks by advance :) Edited February 10, 2021 by zaordsword Quote Link to comment Share on other sites More sharing options...
latigid on Posted February 10, 2021 Report Share Posted February 10, 2021 You need to define your question better. You are using some sort of sensor, but have you written a driver for it to be used with MIOS? How would you expect the velocity values to be modified? Have you looked into the MBIO code? Quote Link to comment Share on other sites More sharing options...
zaordsword Posted February 12, 2021 Author Report Share Posted February 12, 2021 (edited) Hi latigid ! Thanks for your answear :) >>have you written a driver for it to be used with MIOS? No, I don't know how to wrote the driver working with MIOS, but I have a script for making it working with arduino and python. Do you have examples of drivers ? I have see nothing about this topic anywhere on ucapp or on wiki or documentation and forum ... The bmp280 is a pressure / temperature and humidity sensor manufactured by boch. I join the datasheet, my python and a arduino script. (c ++) Edit: I had upload server -200 error when I try to up the datasheet . It's a project exemple availble here. The datasheet is on le page or datasheet >>How would you expect the velocity values to be modified? The sensor give the barometric pressure . I plan to save the atmospheric pressure at initialization as P0 and find the realtime surpressure like P_surpess= ( Press_sensor(t) - P0) Then I would like to map a certain variation of pressure matching with the velocity from 0 ... 127>>Have you looked into the MBIO code? What is MBIO code ? If you talk about the code on github there is a lot of file and I don't know where to find the file where to modify or to put a driver. I did not find documentation of a list of the reference classes / function. BMP280.cpp BMP280.h measurment.txt bme280.py Edited February 12, 2021 by zaordsword Quote Link to comment Share on other sites More sharing options...
latigid on Posted February 13, 2021 Report Share Posted February 13, 2021 13 hours ago, zaordsword said: Hi latigid ! Thanks for your answear :) >>have you written a driver for it to be used with MIOS? No, I don't know how to wrote the driver working with MIOS, but I have a script for making it working with arduino and python. Do you have examples of drivers ? I have see nothing about this topic anywhere on ucapp or on wiki or documentation and forum ... As far as I know, there are no I2C peripherals that were coded into MIOS32. The closest thing that I am familiar with is the I2C MIDI modules, that according to TK. were not trivial to code for, and at that on very low-performance 16F PIC chips. All the MBHP framework gives you is a hardware port on the MCU. You could consider to compare your arduino sketch with a device running off an STM32F4 chip or similar. Alternatively, you might find more code examples of SPI devices. Maybe you can try to code a driver for a similar sensor with an SPI interface? 13 hours ago, zaordsword said: The bmp280 is a pressure / temperature and humidity sensor manufactured by boch. I join the datasheet, my python and a arduino script. (c ++) Edit: I had upload server -200 error when I try to up the datasheet . It's a project exemple availble here. The datasheet is on le page or datasheet >>How would you expect the velocity values to be modified? The sensor give the barometric pressure . I plan to save the atmospheric pressure at initialization as P0 and find the realtime surpressure like P_surpess= ( Press_sensor(t) - P0) Then I would like to map a certain variation of pressure matching with the velocity from 0 ... 127>>Have you looked into the MBIO code? What is MBIO code ? If you talk about the code on github there is a lot of file and I don't know where to find the file where to modify or to put a driver. I did not find documentation of a list of the reference classes / function. The uCapps project is here:http://ucapps.de/midio128.html -- it is more targeted towards general users who would like to use the project without writing code for it. The git project is here:https://github.com/midibox/mios32/tree/master/apps/controllers/midio128_v3 You would need to modify the code to suit your needs. Note that the code is written in C, not python. You can find the documented functions and some examples here:http://www.midibox.org/mios32/manualhttp://ucapps.de/mios32_c.html Best of luck to you if you decide to follow this journey. Others will probably not write the software for you, but if you post your modifications and explain where you are having difficulty, some might be able to help. Quote Link to comment Share on other sites More sharing options...
zaordsword Posted February 17, 2021 Author Report Share Posted February 17, 2021 Hi, On 2/13/2021 at 8:41 AM, latigid on said: Maybe you can try to code a driver for a similar sensor with an SPI interface? The bmp280 is also working with SPI interface ! Do you think it could be more easy do use this kind of interface ? Do you have exemple of coded drivers working with SPI interface working with MIOS32 that could be closer than wroting a driver in I2C interface ? Thanks by advance ! Quote Link to comment Share on other sites More sharing options...
latigid on Posted February 17, 2021 Report Share Posted February 17, 2021 https://github.com/midibox/mios32/blob/master/mios32/STM32F4xx/mios32_ain.chttps://github.com/midibox/mios32/blob/master/modules/ainser/ainser.c https://github.com/midibox/mios32/tree/master/modules/aout Basic drivers/assignments:https://github.com/midibox/mios32/blob/master/mios32/STM32F4xx/mios32_spi.chttps://github.com/midibox/mios32/blob/master/mios32/STM32F4xx/mios32_iic.c Maybe it would be easier for you to use the Arduino and output an analogue voltage to be read by the STM32F4 AIN? That way you can use your working system without much extra coding effort. MBIO supports AIN either on the MCU ports J5A/B or using the AINSER module (typically less noise on the signal). Quote Link to comment Share on other sites More sharing options...
zaordsword Posted February 20, 2021 Author Report Share Posted February 20, 2021 For SPI I have this question : 1) Should I create a special new file for my driver (for exemple bmp380.c ), or should I modify another file existing file in the MIDO128 project and add my code into ? 2) In which file should I need to declare my new SPi driver ? I had a look in MIOS-32spi.c /.h and it seems the declaration is on this file but I am not sure 3) Is there a IDE specially adapted for coding MIOS ? Eclispe ? Borland ? something even better ? Quote There is some module board which convert SPI to Analog, that could be a easy solution. So 2 maybe more "easy" questions : 1 ) How can I calibrate my Ain threshold on MIDIO to say for exemple that a +0.4V correspon to 0 velocity and 4.5 correspond to 127 in velocity ? 2) How can I set that this realtime velocity given by the AInput is applied to all the MIDI event from the DIN module ? Thanks a lot, I really hope that I could fond a solution Quote Link to comment Share on other sites More sharing options...
zaordsword Posted March 9, 2021 Author Report Share Posted March 9, 2021 On 2/17/2021 at 6:52 PM, latigid on said: Maybe it would be easier for you to use the Arduino and output an analogue voltage to be read by the STM32F4 AIN? That way you can use your working system without much extra coding effort. MBIO supports AIN either on the MCU ports J5A/B or using the AINSER module (typically less noise on the signal). Do you have any idea to do that, I have worked a lot on it but still I don't know how to do that. Thanks by advance for your helps Quote Link to comment Share on other sites More sharing options...
latigid on Posted March 10, 2021 Report Share Posted March 10, 2021 Sorry, the extent to which I could help is already in the posts above. If you have more specific questions there might be others who are more into code modification. But at the moment it is hard to know what step you are on. It sounds to me like you are stuck right at the beginning, and I think it is rather up to you to learn how to modify the code to get what you want out of it. Quote Link to comment Share on other sites More sharing options...
zaordsword Posted March 11, 2021 Author Report Share Posted March 11, 2021 I have connected an analog voltage to J5A and I am still trying to understand how can I turn this into a velocity modification applied to every notes On events ... It is that this difficult ? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.