Pi4 Raspaudio Ultra+ Installation

Sesykes71 · July 7, 2025, 1:22pm

I am trying to install my new Ultra++ on a RPi4. I only want line in and line out. The installation instructions are conflicting. The github version for Ultra refers to scripts that are not in the cloned driver. This script is supposed to enable the line in and out. I followed the directions here:

Speaker-test results in this:
peaker-test 1.2.8

Playback device is default
Stream parameters are 48000Hz, S16_LE, 2 channels
WAV file(s)
ALSA lib confmisc.c:165:(snd_config_get_card) Cannot get card index for wm8960soundcard
Playback open error: -19,No such device

Raspiaudio · July 7, 2025, 3:44pm

if you have a blue PCB you do not need to install anything on PI OS it is self detected, updated guide:

Try to start from a fresh SD and follow instruction to be sure that you have the last PI OS

Sesykes71 · July 7, 2025, 7:01pm

Due to another piece of hardware that I needed, I switched to Ubuntu. Ubuntu doesn’t seem to recognize the card.
What is your recommendation for installation?

Steve

Raspiaudio · July 8, 2025, 7:45pm

Last time I checked Ubuntu had not support for WM8960 codec, check again just in case.

Otherwise your only solution is “brute force” sending the I2c commands to init the codec and declare it as a plain I2S device

github.com

RASPIAUDIO/ULTRA/blob/main/ultra.c

#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <linux/i2c-dev.h>
#include <stdint.h>
#include <stdio.h>

int file_i2c; 
char *filename = "/dev/i2c-1";
int addr = 0x1A;
int init_i2c(void)
{
	if((file_i2c=open(filename,O_RDWR)) < 0) return -1;
	if(ioctl(file_i2c, I2C_SLAVE, addr) < 0) return -2;
	return 0;
}
int write_i2c(uint8_t r, uint16_t v)
{
        printf(" %03x => R%02d\n",v,r);
	uint8_t b[2];

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github.com

RASPIAUDIO/ULTRA/blob/main/install.sh

#!/bin/bash

# Check if rc.local exists
if [ ! -f /etc/rc.local ]; then
  echo "rc.local not found. Creating rc.local with default content."
  sudo bash -c 'echo "#!/bin/sh -e" > /etc/rc.local'
  sudo bash -c 'echo "/etc/ultra" >> /etc/rc.local'
  sudo bash -c 'echo "exit 0" >> /etc/rc.local'
  sudo chmod +x /etc/rc.local
else
  # Add the execution of ultra to rc.local if not already present
  if ! grep -q "^/etc/ultra$" /etc/rc.local; then
    echo "Adding execution of ultra to rc.local."
    sudo sed -i '/^exit 0$/i /etc/ultra' /etc/rc.local
  fi
fi

# Copy the ultra file to /etc
gcc -o ultra ultra.c
sudo cp ultra /etc

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