Synthex wrote:dmitri wrote:I thought both your CDC and MIDI firmwares had fuses settings included in the .hex. Am I wrong? I used a JDM programmer. I couldn't make WinPic800 to recognise my JDM programmer and Icprog doesn't yet list PIC18F2550 (tried setting it to PIC18F4550 but for some reason it only writes first 1000h words) so I used PICPgm which worked well.
Fuses are settings in the .hex and JDM programmer is good.
I use WinPic800 with a GTP-USB Plus.
Could you test this one ?
dmitri wrote:Same result. The weird thing is when I program/read the chip in circuit and after programming/reading complete Windows finds MegaDrum USB and installs drivers and it works! But once I reconnect USB cable without ISCP Windows says it found an unknown malfunctioning device. I'm lost.
dmitri wrote:Not only this but also a certain voltages on pins 26,27,28:
26 -> -0.6V
27 -> -0.017V
28 -> +4.7V
And after I disconnect ISCP cable it still works. But once I reconnect USB cable after this it stops working:(
Synthex wrote:dmitri wrote:Not only this but also a certain voltages on pins 26,27,28:
26 -> -0.6V
27 -> -0.017V
28 -> +4.7V
And after I disconnect ISCP cable it still works. But once I reconnect USB cable after this it stops working:(
Do you change fuses settings ?
dmitri wrote:Only one bit - LVP. Otherwise I'm not able to do in circuit programming. But I tried without modifying any fuses at all and result was still the same.
Synthex wrote:dmitri wrote:Only one bit - LVP. Otherwise I'm not able to do in circuit programming. But I tried without modifying any fuses at all and result was still the same.
I have tried the test by activating the LVP, and it is not working.
In fact, i use RB7, RB6 and RB5 to control a bicolor LED to display the activity and status of the USB bus.
I can send you a new version by enabling LVP and disabling the led control.
But, with no LVP, it must work ...
dmitri wrote:Yes, please, post the version without led control and with LVP enabled.
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