Hi,

I newly got an AD1836AZ Daughter Board Rev. B, and put it on BF537-STAMP. Following the H/W and S/W notes on http://docs.blackfin.uclinux.org/doku.php?id=hw:cards:ad1836a&s[]=ad1836, however, it does not work. The messages are shown below (with debugging messages of ad1836.c and bf5xx_sport.c) :

root:/> tone
snd_ad1836_playback_open
snd_ad1836_capture_open
snd_ad1836_hw_params
snd_ad1836_hw_params
snd_ad1836_hw_params
snd_ad1836_hw_params
snd_ad1836_hw_params
snd_ad1836_hw_params
TONE: generating sinesnade_aa d0108H3...6_playback_trigger
sport: bf53x_sport_tx_start: tx_run:0, rx_run:0

ERROR: write(/dev/dsp) failed, errno=5
snd_ad1836_playback_trigger
snd_ad1836_hw_free
snd_ad1836_hw_free
snd_ad1836_capture_close
 

It looks there are problems in sport communications. Would somebody kindly hint me the possible solutions ? Thanks.

Eric

Hi,

This problem is found on 2008R1-RC8. However, the 2008R1-RC8 could be working with the AD1836A on the EZ-AV-EXTENDER with different kernel config and switch settings on BF537-STAMP.

Eric