HifiBerry DAC+ und SI4703 radio modul

File

Line

Function

/inc/class_error.php

153

errorHandler->error

/global.php(961) : eval()'d code

errorHandler->error_callback

/global.php

961

eval

/printthread.php

require_once

File

Line

Function

/inc/class_error.php

153

errorHandler->error

/printthread.php(287) : eval()'d code

errorHandler->error_callback

/printthread.php

287

eval

/printthread.php

117

printthread_multipage

PHP-Code:

root@CarPi:~/RdSpi# sudo nano i2c-init.c
root@CarPi:~/RdSpi# gcc -o i2c-init i2c-init.c -lwiringPi
root@CarPi:~/RdSpi# sudo ./i2c-init
root@CarPi:~/RdSpi# sudo i2cdetect -y 1
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- UU -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
root@CarPi:~/RdSpi# sudo ./rdspi reset
Unable to read Si4703!
Communication error
root@CarPi:~/RdSpi#

Code:

int resetPin = 25; // GPIO23

    int sdaPin = 2; // GPIO0

Code:

dwc_otg.lpm_enable=0 console=tty2 loglevel=3 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=noop fsck.repair=yes rootwait logo.nologo noatime nodiratime splash quiet

Code:

# For more options and information see

# http://www.raspberrypi.org/documentation/configuration/config-txt.md

# Some settings may impact device functionality. See link above for details



# uncomment if you get no picture on HDMI for a default "safe" mode

#hdmi_safe=1



# uncomment this if your display has a black border of unused pixels visible

# and your display can output without overscan

#disable_overscan=1



# uncomment the following to adjust overscan. Use positive numbers if console

# goes off screen, and negative if there is too much border

#overscan_left=16

#overscan_right=16

#overscan_top=16

#overscan_bottom=16



# uncomment to force a console size. By default it will be display's size minus

# overscan.

#framebuffer_width=1280

#framebuffer_height=720



# uncomment if hdmi display is not detected and composite is being output

hdmi_force_hotplug=1



# uncomment to force a specific HDMI mode (this will force VGA)

hdmi_group=1

hdmi_mode=19



# uncomment to force a HDMI mode rather than DVI. This can make audio work in

# DMT (computer monitor) modes

#hdmi_drive=2



# uncomment to increase signal to HDMI, if you have interference, blanking, or

# no display

#config_hdmi_boost=4



# uncomment for composite PAL

#sdtv_mode=2



#uncomment to overclock the arm. 700 MHz is the default.

#arm_freq=800



# Uncomment some or all of these to enable the optional hardware interfaces

#dtparam=i2s=on



# Uncomment this to enable the lirc-rpi module

#dtoverlay=lirc-rpi



# Additional overlays and parameters are documented /boot/overlays/README



# Enable audio (loads snd_bcm2835)

dtparam=audio=on

gpu_mem=256

dtparam=i2c_arm=on

disable_splash=0

dtparam=spi=on

Code:

/* i2c-init.c */

#include <wiringPi.h>



int main() {

   int resetPin = 4; // GPIO23

   int sdaPin = 2; // GPIO0



   /* Setup GPIO access in BCM mode */

   wiringPiSetupGpio();



   /* Set pins as output */

   pinMode(resetPin, OUTPUT);

   pinMode(sdaPin, OUTPUT);



   /* A low SDA indicates a 2-wire interface */

   digitalWrite(sdaPin, LOW);

   /* Put chip into reset */

   digitalWrite(resetPin, LOW);

   /* 1ms delay to allow pins to settle */

   delay(1);

   /* Bring chip out of reset with SDIO set low

   and SEN pulled high (with pull-up resistor) */

   digitalWrite(resetPin, HIGH);



   return 0;

}