Hi ,
I am currently working with audio configuration on Beagle Board XM Rev B for ThreadX RTOS.
The beagle board xm has TPS65950 as the audio codec, which is connected to the core through McBSP 2.
- I have written Mcbsp driver and it works fine in loopback mode.
- I have written I2C controller driver to configure the TPS65950 audio codec, I verified the I2C driver by writing data to a particular offset on the Audio Codec and read it back and it gave the proper data that was written.
Now the problem is, i configured the audio codec as per the programming guide on data manual of TPS 65950 for a play back scenario but i am able to hear only the POP noise that occurs when the audio chip is initialized and then i don't hear any sound at all on my headset.
Following is the Mcbsp register dump and the Audio register dump
******************************************************************************
"MCBSP Registers"
PCR = 0x0
SPCR2 = 0x30
SPCR1 = 0x0
RCR2 = 0x0
RCR1 = 0x0
XCR2 = 0x1
XCR1 = 0x40
SRGR2 = 0x2000
SRGR1 = 0x1
MCR2 = 0x203
MCR1 = 0x0
RCERA = 0x0
RCERB = 0x0
XCERA = 0x1
XCERB = 0x0
RCERC = 0x0
RCERD = 0x0
XCERC = 0x0
XCERD = 0x0
RCERE = 0x0
RCERF = 0x0
XCERE = 0x0
XCERF = 0x0
RCERG = 0x0
RCERH = 0x0
XCERG = 0x0
XCERH = 0x0
REV = 0x23
RINTCLR = 0x0
ROVFLCLR = 0x0
SYSCONFIG = 0x0
THRS2 = 0x1
THRS1 = 0x0
IRQ STATUS = 0x0
IRQ ENABLE = 0x0
WAKEUPEN = 0x0
XCCR = 0x1800
RCCR = 0x808
XBUFF = 0x500
RBUFF = 0x0
***************************************************************************
"Audio Registers"
RX PATH SEL = 0xa
APPL CTL = 0x10
AVDAC CTL = 0x3
ARXL1 APGA CTL = 0x33
ARXR1 APGA CTL = 0x33
SOFTVOL CTL = 0x1
CODEC MODE = 0x2
HS SEL = 0x72
ARXL1PGA = 0xbf
ARXR1PGA = 0xbf
ARXL1 APGA CTL = 0x33
ARXR1 APGA CTL = 0x33
HS GAIN SET = 0x5
ANAMICL = 0x0
MISC SET = 0x2
HS GAIN SET = 0xf
HS POPN SET = 0x6
Option = 0xc3
*********************************************************************************
Also please let me know if there is any way with which i can verify whether data is actually flowing through the MCBsp and reaching the Audio Codec.
Regards
Haran
