joeman0613

After some research, it seems the C8051F321 or C8051F320 from Silicon laboraties are a good alternative for USB MIDI bridges. The chips are < $4 according to www.mouser.com Timers, ADC, UART, USB, I2C, 16K Flash, 2K RAM All we need ! In addition a complete dev kit with eval board + debugger is < $99 more infos here http://www.silabs.com/tgwWebApp/public/web_content/products/Microcontrollers/USB/en/USBMCU_matrix.htm Anybody here is familiar with these MCU ? Any comment, suggestion ?

Thanks for the tips. Anyway this will add extra cost to the project ! What reference of external UART do you currently use ? Thanks J

Thanks for your answers ... So what is the solution ? The EZ-USB AN2131 from cypress is obsolete now, it seems very difficult to order parts now, and the pic solution is not working ! How can we develop a USB MIDI bridge ? Can I find the USB MIDI source code for the PIC available somewhere for download ? I would be happy to have a look to this code, althrough it does not work due to the silicon issue . Thanks J

I'm not aware of any new silicon version. BTW, are there any software workaround for the bugged silicon ? What exactly is the problem ? From what I read, it seems the problem comes from the UART which sends undesired byte "0", always ? Are there bug on the USB as well ?

Dear All It sounds the USB MIDI part of the project has been cancelled due to a silicon problem found on the EUSART of pic microcontrollers. Is this issue now resolved with new pic silicon version ? I would like to start the development of such MIDI USB project using a PIC18F2455. Any chance to make it working ? Thanks J