A3DP using a CC2564MODNEM and TM4C123GH6PM

Andrew Gross

Other Parts Discussed in Thread: CC2564MODNEM, CC2564MODN, MSP430F5438

When I try to run the A3DP Sink demo for Tiva, the remote control functions work correctly but the I2S output does not work.

now for the details:

I am trying to run the A3DPDemo_SNK program on a tm4c123gxl Launchpad using the CC2564MODNEM Bluetooth module evaluation board. I have version 1.2 of the bluetopia stack for Tiva. I have a sensor hub booster back which I am using to connect the CC2564MODNEM through the RF headers. (the CC2564MODN uses the CC2564B)

I made a modified version of HALCFG.c that directs the uart and reset signals to the correct pins. I am building with CCS5.5 and using Tivaware C Series 2.1.0.12573.

The code compiles correctly. When I run the program on the Launchpad, I can set the local name and class of device, open the sink, and pair it with my phone. It functions correctly as a remote control, but I can not get any signal from the I2S/PCM output on the MODN. No FSync, no bit clock, no data.

I tested the CC2564MODNEM using an MSP430F5438 experimenter board and the msp430 version of the A3DP demo, and the I2S worked correctly in that scenario. So the module is good.

Apparently I'm missing something in the setup, any help would be appreciated.

Thanks,

Andy

over 9 years ago

0 Joseph Gigi over 9 years ago

TI__Guru* 85400 points

Hi,

It looks like the booster pack that you use does not have the PCM lines connected.
From the CC2564MODNEM user guide:

Pin #	EM Adapter Pin Assignment	Pin #	EM Adapter Pin Assignment
1	N/C	2	GND
3	N/C	4	N/C
5	N/C	6	N/C
7	+3.3V	8	MODULE_AUDIO_DATA_OUT
9	+3.3V	10	MODULE_AUDIO_DATA_IN
11	MODULE_AUDIO_FSYNC	12	N/C
13	N/C	14	N/C
15	N/C	16	N/C
17	MODULE_AUDIO_CLK	18	MODULE_UART_RTS
19	nSHUTD	20	N/C

From the sensor hub booster pack user manual,

Regards,
Gigi Joseph.

0 Andrew Gross over 9 years ago in reply to Joseph Gigi

Prodigy 50 points

Thats true, but I'm not trying to read the I2S with the Tiva. We're actually going to bring the i2s signal off of the debug header on the CC2564MODNEM during our initial testing.

I have been probing the fsync, data clock and audio out pins on the debug header with a scope to check for a signal. I have also probed at the 0ohm resistors that are in line these signals. As I said, when I run with the MSP430 code, I can see that these signals are active at these test points. When I run the Tiva they are all low. (0V).

0 Miguel over 9 years ago in reply to Andrew Gross

TI__Mastermind 23565 points

Hi Andrew,

Could you share the terminal logs?

Regards,

Miguel

0 Andrew Gross over 9 years ago in reply to Miguel

Prodigy 50 points

Sure,

Here's the basic scenario. Let me know if there is anything else specifically that you would like to see.