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  I2C on Pulpissimo
Posted by: magseet - 12-03-2018, 09:41 PM - Forum: PULP General questions - Replies (9)

I'm trying to use the I2C controller to communicate with my own I2C peripheral. First, I was trying to build the tb by including the I2C EEPROM (I've followed the README instructions). The problem is that, when using the example program for I2C, the RTL simulation gets stuck at the first write operation. Moreover, SDA and SCL signals never toggle during RTL simulation.

Do you have an example program I can use to make I2C work? I guess I need to make some initialization..

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  PULP Memories Address Maps
Posted by: Bassma - 11-24-2018, 04:26 PM - Forum: PULP General questions - Replies (1)


I'm trying to preload the program in L2 cache but i'm unable to trace which addresses goes into which memory
so far what i got tracing is the hello world example:

addresses in stimuli file from 1C000000 - 1C001030 go in this memory

 address in stimuli file from 1C008000 - 1C00AF80 go in this memory

but i have no idea where the rest goes. 
Question 1: is the mapping mentioned anywhere in the hdl files?
Question 2: I've not been able to build the documents in ipstools due to python libraries errors is there a pdf or a latex version i can get anywhere else online?


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  Download program with JTAG interface
Posted by: wangzp - 11-19-2018, 06:44 AM - Forum: PULP General questions - Replies (1)


I have build a FPGA project of pulpissimo. How do I download the program to my CPU with JTAG interface?


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  Linux running on the ZYNQ
Posted by: soyedtuhin - 11-09-2018, 01:00 PM - Forum: PULP General questions - Replies (1)


I am trying to run Helloworld on zedboard.

Configuration: Ubuntu 18.04.LTS, Vivado 15.01, ri5cy_gnu_toolchain compiled for RISCY core. Uart cable connected, transferred spiload, spi_stim.txt to root partiton.

When I try to boot from sd card with Putty, it goes to

Welcome to Buildroot
buildroot login:
 It does not goes to he expected "zynq>"

If I login with root and try to run Helloworld application
I get the following error
./spiload -t20 spi_stim.txt
Device has been reset
Sending block addr 00000000 with 256 entries
**Device not found**
: No such file or directory
*** **Error in `./spiload': free(): invalid pointer: 0x0000a2c0** ***
======= Backtrace: =========
======= Memory map: ========
00008000-0000b000 r-xp 00000000 b3:02 18         /spiload
00012000-00013000 rw-p 00002000 b3:02 18         /spiload
00013000-00034000 rw-p 00000000 00:00 0          [heap]
36db7000-36ee0000 r-xp 00000000 b3:02 781847     /lib/libc-2.20.so
36ee0000-36ee7000 ---p 00129000 b3:02 781847     /lib/libc-2.20.so
36ee7000-36ee9000 r--p 00128000 b3:02 781847     /lib/libc-2.20.so
36ee9000-36eea000 rw-p 0012a000 b3:02 781847     /lib/libc-2.20.so
36eea000-36eed000 rw-p 00000000 00:00 0
36eed000-36f02000 r-xp 00000000 b3:02 781843     /lib/libpthread-2.20.so
36f02000-36f09000 ---p 00015000 b3:02 781843     /lib/libpthread-2.20.so
36f09000-36f0a000 r--p 00014000 b3:02 781843     /lib/libpthread-2.20.so
36f0a000-36f0b000 rw-p 00015000 b3:02 781843     /lib/libpthread-2.20.so
36f0b000-36f0d000 rw-p 00000000 00:00 0
36f0d000-36f2a000 r-xp 00000000 b3:02 781846     /lib/libgcc_s.so.1
36f2a000-36f31000 ---p 0001d000 b3:02 781846     /lib/libgcc_s.so.1
36f31000-36f32000 rw-p 0001c000 b3:02 781846     /lib/libgcc_s.so.1
36f32000-36f52000 r-xp 00000000 b3:02 781851     /lib/ld-2.20.so
36f54000-36f58000 rw-p 00000000 00:00 0
36f58000-36f59000 rw-p 00000000 00:00 0
36f59000-36f5a000 r--p 0001f000 b3:02 781851     /lib/ld-2.20.so
36f5a000-36f5b000 rw-p 00020000 b3:02 781851     /lib/ld-2.20.so
3ea71000-3eab3000 rw-p 00000000 00:00 0          [stack]
3eed4000-3eed5000 r-xp 00000000 00:00 0          [sigpage]
ffff0000-ffff1000 r-xp 00000000 00:00 0          [vectors]

built process attached

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  Welcome to PULP Platform forum / Instructions
Posted by: rumak - 10-10-2018, 01:28 PM - Forum: PULP General questions - No Replies

Dear PULP user / PULP team member,

For a while now, PULP has been gaining momentum and as a result, we decided to start a forum. This has been done with the intention to increase the visibility of PULP's support. Since the support has been currently provided via pulp-info and dedicated GitHub pages, it is not easily searchable. Another reason why we decided to start a forum is the intention to build a community around PULP and possibly promote frequently engaged users to moderators. Based on the number of support requests received via pulp-info we decided not to create dedicated subforums, but we do not exclude that this might happen in the future.

PULP users: If you have a technical question related to PULP, please register and start a thread. If you enabled email notifications during the registration process, you will be notified once a PULP team member replies. You may also subscribe to individual threads of your interest at the bottom of the page.

PULP team members: After you have registered, please subscribe to The PULP General Question forum via the button in the upper part of the page. Senior PULP team members will be promoted to Moderators upon registration. If you enabled email notifications during the registration process, you will be notified by email whenever someone starts a new thread. If you replied to a post, you will also (by default) receive an email notification whenever there is a continuation to the thread.

Contact the admin in case you have questions or suggestions.
Your admin.

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