Update to Arduino board package

[r.miller]

I've updated the Arduino board package for BlackIce to version 0.1.2. It now includes the patched version of dfu-util which works more reliably on the BlackIce II, and a a new QSPI library for simple access to the Quad SPI interface between the STM32 and ICE40. Using 4 data lines and a 40 MHz clock, this allows applications to pass data between the two chips at 160 MBit/sec.

If you already have the Arduino myStorm package installed, you should be offered an update automatically. To install it for the first time, see the instructions in this post.

[lawrie]

Thanks for that. I just updated it successfully on my Ubuntu machine. I had previously overwritten the installed version of dfu-util with a patched version.

I will try out QSPI.

There is a bug in MyStorm::FPGAConfigure(Stream &str) in MyStorm.cpp that I forgot to tell you about before. It stopped it working for me. At line 107 you have "lastread - millis()" which should be "millis() - lastread". Also, I think lastread should be declared as unsigned long not int, or it may overflow. There is a second declaration of it at line 129. The changes worked for me.

[r.miller]

There is a bug in MyStorm::FPGAConfigure(Stream &str) in MyStorm.cpp that I forgot to tell you about before. It stopped it working for me. At line 107 you have "lastread - millis()" which should be "millis() - lastread". Also, I think lastread should be declared as unsigned long not int, or it may overflow. There is a second declaration of it at line 129. The changes worked for me.

Thanks for spotting that! I've fixed the expression order and updated the package to v0.1.3. In principle you are right about the type of lastread but (a) int on ARM is 32 bits, and (b) even if was 16 bits, the loop will end before an overflow can occur.

[Folknology]

Great work Richard I have been waiting for the Qspi interconnect to be used..