Hi all,
I’m now testing the ring tone on the SL808X. I found both the AT command and ADL do not support audio for this module. When receiving the incoming call, I could only see a “wake up” signal on WAKE_N. That’s it. Is there anyone having the experience with the audio on SL808X?
Appreciate your attention!
Hi,
I tested on SL8080T and when an incoming call comes, i can see the ring indication. FW used is 7.52.2.A5
What exact issue are you facing? which FW version are you using at your end?
are you using 8-wire UART?
Thanks
Rex
I tried both FW 7.52 and FW7.53. I can see the ring indicator signal changes which is like an enable signal. I want an analog signal run on the SPK pin when there is incoming call. I’m not using 8-wire UART, just using the default settings (I think it’s 4-wire UART).
Hiya,
Just a quick thought:
Are you using the correct ‘Bearer’ for your incoming call? Modems and Telcos treat Voice and CSD (Circuit Switched Data - as opposed to GPRS data) calls differently.
I’ve been tripped up this way in the past.
I’d start by having a look at AT+WRIM (Ring indicator mode) and maybe AT+CBST to see if they’re applicable to your module.
ciao, Dave
Hi,
I’m using this configuration: “at+cbst=0,0,1” which means “autobauding, modem type: none (default value)”, “no data compression is provided and only asynchronous mode is supported (default value)” and “non transparent only (default value)”.
After configuring “at+wrim=1,71,100”, I can see the ring indication pulse from the “WAKE_N” pin. However, ring indication is not what I need. I want a continuous analog signal showing up in the SPK pin or some another pins which can make the ringer ring when the call incomes.
I tried both on FW7.52 and FW7.53, I can’t hear the ringing sound when there’s incoming call. I scoped the signal on SPK pin as well, and didn’t see any usable signal.
Then, I tried to use “adl_tonePlay” to play a tone on the speaker, I got nothing on the speaker. (tried both on FW7.52 and FW7.53).
These are all I got. I’m wondering if I need to configure something else or I did something wrong?
Thanks!
In general, the audible ring signal is not “in-band”; ie, it is not sent as audio in the comms channel by the network - so the terminal has to generate it itself.
If you were doing this with a “dumb” modem, that would mean that your Host application would sense the RI signal (or +CRING or whatever), and use that to start doing its own alerting …
So, if you have an external host with the capability, you could also do it that way.
From Open-AT, adl_tonePlay() or similar would be the way to go.
Need more detail of what, exactly, you tried.
Have you managed to get adl_tonePlay() to work at all in a simple, standalone application - such as one of the Dev Studio examples 
If not, that’s the place to start …
Hi，
Thanks for your attention!
I tried a very simple application that I want to play a 300Hz tone on the speaker every 400ms. Following is the code:
#include "adl_global.h"
#include "generated.h"
#include "adl_audio.h"
#include "adl_TimerHandler.h"
s32 handle;
void MyAudioEventHandler ( s32 audioHandle, adl_audioEvents_e Event )
{
switch ( Event)
{
case ADL_AUDIO_EVENT_NORMAL_STOP://ADL_AUDIO_EVENT_NORMAL_STOP is sent to the owner resource when a tone is stopped automatically at the end of the duration time.
TRACE (( 1, " Audio handle %d: stop ", audioHandle ));
// unsubscribe to the speaker
//adl_audioUnsubscribe ( handle );
break;
case ADL_AUDIO_EVENT_RESOURCE_RELEASED://automatically unsubscribed due to a prioritary use
break;
default: break;
}
return;
}
void Timerhdl(u8 ID, void *Context){
TRACE (( 1, "inside Timer handler" ));
adl_audioTonePlay( handle, 300, -10, 0, 0, 50 );
}
void main_task(void) {
handle = adl_audioSubscribe ( ADL_AUDIO_SPEAKER, MyAudioEventHandler,
ADL_AUDIO_RESOURCE_OPTION_FORBID_PREEMPTION );
adl_tmrSubscribe( TRUE, 4, ADL_TMR_TYPE_100MS, Timerhdl );
}But I still could not get any sound from the speaker. (tested on FW7.53 and FW7.52).
Best,
Naichao