If you can hear any sound, then I would assume, that the device is working.
So nothing more to be done with the radio init/powerup.
I bet, that the audio configuration is not correct yet.
In the emu I found following AS3514 init sequence after entering the radio
menu
and after setting up the tuner:
AUDIOSET1 4e
70000084 |= 1 <<<<< don't know, wether this is radio related
70000080 |= 4 <<<<< don't know, wether this is radio related
HPH_OUT_L e0
HPH_OUT_L 6b
HPH_OUT_R eb
LINE_IN1_L df
LINE_IN1_R df
AUDIOSET1 4a
AUDIOSET1 4e
LINE_IN1_L df
LINE_IN1_R df
And regarding your other question:
69ddd55 0000e8f4 CPU ???????? 70000020 R4-40000000
69ddd57 0000e8fc CPU ???????? 70000020 W4-40000000
I added the comment after looking at the assembler code at addr 0000e8f4.
The cpu reads a value from 0x70000020, bics bit11 and stores the result.
Nothing wrong here.
----- Original Message -----
From: "Ivan Zupan" <[EMAIL PROTECTED]>
To: "Rockbox development" <[email protected]>
Sent: Wednesday, May 16, 2007 2:18 PM
Subject: Re: Sansa radio driver (AS5314 help
The radio commands are well figured out. I have set the audio to maximum
output for the FM chip and maximum gain for the AS3514, but it is still
barely audible. I am almost certain that something is blocking the audio
output from the FM chip. Maybe the init is done right when the firmware
start up and this only enabled something else? DEV_INIT &= ~(1 << 11)
seems to have no effect on the radio, there is also a reference to
70000030 right before this from a log I found:
0392304 0000333c 70000030 R-00000000
0392306 00003344 70000030 W-40000000
0392308 0000334c 70000020 R-40000000
039230b 00003358 70000020 W-40000000
Writing that value to that memory resulted in the screen fading out to
purple. How does clearing bit 11 from the value 0x40000000 result in
0x40000000 from your logs? Or is this the emulator modifying the actual
result?
There is a clock input to the tuner, perhaps it needs to be enabled like
on the AS chip? However, according to the Sanyo specification, it does
not necessarily have to be used.
Overall, it's quite strange that I am able to get correct results from the
Sanyo chip (revision, status, etc), yet audio is very faint. Perhaps the
clock in double as power for amplification?
Antonius Hellmann wrote:
Yes, that is correct. The complete register accesses look as follows:
69a7b08 000b9418 CPU GPI_F_VAL 6000d0b4 R4-0000003b <<<< right click
detection (into radio menu)
69ddd55 0000e8f4 CPU ???????? 70000020 R4-40000000 <<<< reading
DEV_INIT
69ddd57 0000e8fc CPU ???????? 70000020 W4-40000000 <<<< bic bit
11 of DEV_INIT
.... as posted before .....
If it is of interest to you, I can dump the sansa radio commands in a
more readable way.
But be aware, that the radio responses are synthetic in the emulator.
----- Original Message ----- From: "Ivan Zupan" <[EMAIL PROTECTED]>
To: "Rockbox development" <[email protected]>
Sent: Wednesday, May 16, 2007 2:38 AM
Subject: Re: Sansa radio driver (AS5314 help
I have tried those, but they are pretty much what Mr.H described.
Interestingly enough, he mentioned clearing bit 11 at 0x70000020 (no
effect on the radio whatsoever by the way). This address appears to be
DEV_INIT. Since all the hardware uses DEV_EN/DEV_INIT/DEV_RS, maybe the
radio is not enabled at all? Do you see any references to the above
right before GPIOH is used? It may be used to unmute the line1 in via
some hardware switch...
