topic Re: Capture audio data fail by tinycap in i.MX Processors

Capture audio data fail by tinycap

kennychou — Tue, 29 Nov 2016 11:56:25 GMT

Hi all,

I would like to use SSI 1 to capture audio data in I2S slave mode and format as below:

Capturing sample: 1 ch, 8000 hz, 16 bit

but got all zero data when using tinycap.

I found there is no data in SRXn but got data in RFCNTn,

please help to show me the way to debug it.

Dump registers of SSI 1:

STX0      REG 0 = 0
STX1      REG 4 = 0
SRX0      REG 8 = 0
SRX1      REG c = 0
SCR        REG 10 = 1115
SISR      REG 14 = f013
SIER       REG 18 = 1d035f7
STCR      REG 1c = 38d
SRCR      REG 20 = 38d
STCCR    REG 24 = e100
SRCCR    REG 28 = e100
SFCSR    REG 2c = b0ddc0dd
STR        REG 30 = 1103
SOR        REG 34 = 0
SACNT    REG 38 = 0
SACADD REG 3c = 0
SACDAT   REG 40 = 0
SATAG     REG 44 = 0
STMSK     REG 48 = 0
SRMSK     REG 4c = 0
SACCST   REG 50 = 0
SACCEN   REG 54 = 0
SACCDIS REG 58 = 0

BR,

Kenny

Re: Capture audio data fail by tinycap

kennychou — Wed, 30 Nov 2016 11:12:21 GMT

Hi all,

Please ignore this question since I had found hardware issue on my platform.

Thanks,

Kenny

Re: Capture audio data fail by tinycap

igorpadykov — Wed, 30 Nov 2016 23:50:38 GMT

Hi Kenny

in general debugging could be done starting with drivers

described in Linux Manual in documentation on

http://www.nxp.com/products/microcontrollers-and-processors/arm-processors/i.mx-applications-processors/i.mx-6-processors/i.mx6qp/i.mx-6-series-software-and-development-tool-resources:IMX6_SW

and AN4553 Using Open Source Debugging Tools for Linux on i.MX Processors

http://www.nxp.com/assets/documents/data/en/application-notes/AN4553.pdf

Best regards
igor

Re: Capture audio data fail by tinycap

kennychou — Thu, 01 Dec 2016 01:39:36 GMT

Hi igor,

Got it , thank you very much.

Best regards,

Kenny