Hi, I made a slightly modified version of the board without much changing(downloading circuit unchanged), and now I have some problems with SRAM programming: moving R9 to R19 doesn't work. I'm using a custom FT2232H downloader and iceprog tool. Flash programming works so I think my downloader and FPGA chip have no problem.

If I unmount both R9 and R19, and manually swapping MISO/MOSI of the FT2232H, SRAM programming will work. However, whenever the R19 is populated(SDI and SDO of the FPGA are shorted), programing will fail(DONE not high after run iceprog).

Any ideas about the problem? Thanks in advance.

HI there, I am trying to program this FPGA by arduino due. I uploaded the initial sketch to arduino due after that , the LED close to PGM1 connections on the board turn on. Whenever I try to program it by using example on ICE40HX1K-EVB, it connects to arduino due , says bulk erased , and programing ... I also can see the RX led on the arduino blinks. However ,this continues forever , and i am not sure what to do next about this. I wonder if you guys have any suggestion? For SPIFlash i am using latest version.

Hi Olimex!
I saw you had a ICE40 100Msps ADC extension board - but couldn't find the link to the repo. Would you still have it?
Thanks in advance!

Hi all

I'm following the guide at Getting started with FPGA with only Free and Open source software and hardware tools tutorial. However, I stumbled at the step:

Open the iceprog.ino sketch.

From menu Sketch–Include library–Manage libraries check if you have SPI and SPIFlash libraries installed if not install them.

Compile and Upload the sketch.

If I understand the guide correctly, the iceprog.ino is referring to https://github.com/OLIMEX/iCE40HX1K-EVB/blob/master/programmer/olimexino-32u4%20firmware/iceprog/iceprog.ino. However if I try to flash this on Arduino IDE I get the following error

/Users/michaell/Repos/iCE40HX1K-EVB/programmer/olimexino-32u4 firmware/iceprog/iceprog.cpp:1:1: error: expected unqualified-id before '.' token
 ../iceprog.ino
 ^

exit status 1

Compilation error: expected unqualified-id before '.' token

Also, it seems like there has been an update to iceprog.ino which is not reflected in this directory.

Hi,
The firmware compilation using arduino IDE and/or platformio fails (fedora 35 / gcc g++ 11.2.1):
(here with platformio)

src/iceprog.cpp: In function 'void loop()':
src/iceprog.cpp:120:15: error: 'loopProg' was not declared in this scope
   if (isProg) loopProg();
(...)
src/iceprog.cpp:121:8: error: 'loopBridge' was not declared in this scope
   else loopBridge();

proposed solution : add the following declarations in iceprog.cpp (and/or iceprog.ino) after void readpage(uint16_t adr); (L87)

void loopProg(void);
void loopBridge(void);

The current documentation assumes that Olimexduino is used as a programmer with the custom cable.

This board would be much more user friendly if some guidance was provided on making it work with a generic Arduino - for example an Arduino Pro Mini.

Any chance to get iceprogduino to be able to program the SRAM directly instead of rewriting the SPI flash? That would make the development process a lot faster.

For the example:

https://github.com/OLIMEX/iCE40HX1K-EVB/blob/master/demo/ice40hx1k-evb/Makefile

make prog will fail whenever USB port is different from /dev/ttyACM0. iceprogduino has a -I option, but that is not used in this demo Makefile.