Error Connecting to the Red Pitaya

[JohnGinger]

I'm having trouble connecting to the red pitaya.

I've been following the guide on https://github.com/mri4all/console/wiki/Setting-up-the-Red-Pitaya-board

When running python -m unittest test_server.ServerTest

I get the following error

(console-py3.10) (base) johnginger@Johns-MacBook-Pro marcos_client % python -m unittest test_server.ServerTest
Fetching IP address from MRI4ALL configuration file.
IP address: 192.168.0.18
s.sFs..FF.FsssE
======================================================================
ERROR: test_version (test_server.ServerTest)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/johnginger/code/console/external/marcos_client/test_server.py", line 24, in setUp
    self.s.connect((ip_address, port))
ConnectionRefusedError: [Errno 61] Connection refused

======================================================================
FAIL: test_bus (test_server.ServerTest)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/johnginger/code/console/external/marcos_client/test_server.py", line 163, in test_bus
    self.assertAlmostEqual(read_t / 1e3, times[1] * loops_norm,
AssertionError: 106.436 != 131.0 within 2.0 delta (24.563999999999993 difference)

======================================================================
FAIL: test_grad_adc (test_server.ServerTest)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/johnginger/code/console/external/marcos_client/test_server.py", line 307, in test_grad_adc
    self.assertEqual(expected, readback[1:])  # ignore 1st word, since it depends on the history of ADC transfers
AssertionError: Lists differ: [65535, 1536, 1536, 1536, 1536, 1536, 1536, 1536, 1536, 1536] != [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]

First differing element 0:
65535
0

- [65535, 1536, 1536, 1536, 1536, 1536, 1536, 1536, 1536, 1536]
+ [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]

======================================================================
FAIL: test_idle (test_server.ServerTest)
Make sure the server state is (or becomes) idle, all the RX and TX buffers are empty, etc.
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/johnginger/code/console/external/marcos_client/test_server.py", line 125, in test_idle
    self.assertEqual(reply,
AssertionError: Lists differ: [128, 1, 0, 65541, {'regstatus': [0, 0, 0, 0, 0, 0, 0]}, {}] != [128, 1, 0, 65541, {'regstatus': [0, 0, 0, 0, 0, 16777215, 0]}, {}]

First differing element 4:
{'regstatus': [0, 0, 0, 0, 0, 0, 0]}
{'regstatus': [0, 0, 0, 0, 0, 16777215, 0]}

- [128, 1, 0, 65541, {'regstatus': [0, 0, 0, 0, 0, 0, 0]}, {}]
?                                                  ^

+ [128, 1, 0, 65541, {'regstatus': [0, 0, 0, 0, 0, 16777215, 0]}, {}]
?                                                  ^^^^^^^^


======================================================================
FAIL: test_mar_mem (test_server.ServerTest)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/johnginger/code/console/external/marcos_client/test_server.py", line 345, in test_mar_mem
    self.assertEqual(reply,
AssertionError: None != [128, 1, 0, 65541, {'mar_mem': 0}, {'info[38 chars]4']}]

----------------------------------------------------------------------
Ran 15 tests in 1.359s

FAILED (failures=4, errors=1, skipped=6)

on the red pitaya I get the following error

root@192.168.0.18 "~/marcos_server"
MaRCoS server, Mar  7 2025 00:00:12
Server version 1.0.5
Parsing the MPack tree failed: mpack_error_type

[jonbmartin]

@JohnGinger I don't know about this specific error. But was having some issues with my RP OS version over at #33. Maybe related?

[JohnGinger]

Yeah I managed to resolve by downloading an old image. These are the steps I used to make it work.

1. Download the image from https://drive.google.com/file/d/1zAf62b-FFHxfX1d57BsJo8Ax3tWUudo0/view?usp=sharing
2. Unzip using ```tar -xjf sdimage-bootpart-202004030120-mmcblk0.direct.tar.bz2```
3. Rename using ```mv sdimage-bootpart-202004030120-mmcblk0.direct sdimage.img```
4. Flash to an SD card (using https://etcher.balena.io/) or other suitable flasher
5. Put the SD card into the red and turn on, with it plugged into ethernet
6. Find the IP address (It's 192.168.0.18 by default, but your network might be doing weird stuff)
7. ssh-copy-id root@192.168.0.18 (password is root)
8. ```./marcos_setup.sh 192.168.0.18```
9. ```ssh root@192.168.0.18``` and then ```reboot```

marcos_setup.sh being

#!/bin/bash
# Vlad Negnevitsky, May 2020
# Rudimentary setup procedure for the SDRLab



# Decide which scp command to use (depending on host + SDRLab's OpenSSH versions)
scp README.md root@$1:/tmp/readme.org >/dev/null 2>/dev/null
if [ "$?" -ne "0" ]; then
    scp_="scp -O"
else
    scp_="scp"
fi
# check the command runs
$scp_ README.md root@$1:/tmp/readme.org >/dev/null 2>/dev/null
if [ "$?" -ne "0" ]; then
    echo "SCP command does not run; please investigate manually."
    exit 1§
fi

echo "Setting up MaRCoS on IP $1..."

echo "Setting date on the SDRLab based on the host date..."
ssh root@$1 "date -Ins -s \"$(date -u +"%Y-%m-%dT%H:%M:%S%z")\""

$scp_ marcos_fpga_rp-122.bit.bin root@$1:/lib/firmware/marcos_fpga.bit.bin
$scp_ marcos_fpga_rp-122.dtbo root@$1:/lib/firmware/marcos_fpga.dtbo
$scp_ activate_bitstream.sh root@$1:~/activate_bitstream.sh
$scp_ initd_activate root@$1:/etc/init.d/activate_bitstream

ssh root@$1 "sudo update-rc.d activate_bitstream defaults"
ssh root@$1 "~/activate_bitstream.sh"

echo "Killing any existing server instances..."
ssh root@$1 "killall marcos_server"

echo "Copying MaRCoS server..."
ssh root@$1 "mkdir /tmp/marcos_server"
$scp_ -r marcos_server/* root@$1:/tmp/marcos_server
rm -rf /tmp/marcos_server # remove local copy

echo "Compiling MaRCoS server on the SDRLab..."
ssh root@$1 <<EOF
cd /tmp/marcos_server
mkdir build
cd build
cmake ../src
make -j2

# Either copy the server binary to ~/ or just make a symlink.
# Symlinks are best for development/debugging, since it forces
# recompilation of the latest version every time the RP is rebooted.
# Copying is best for experimental use, since it's persistent across
# reboots.
#
# cd ~/
# ln -s /tmp/marcos_server/build/marcos_server
cp marcos_server ~/
# rm -rf /tmp/marcos_server
EOF

[JohnGinger]

That download link may not work forever, I don't know if there is a good place to archive things