LCD Initialization Commands in official firmware

kgb2008 · 03-27-2008

Meizu often change their components in the same model, it's announced that the Philips audio codec of M3 will be replaced with Wolfson 8987 from next week. So the new firmware must be smart enough to detect the chip.

audiofish · 03-27-2008

Say, how did you figure out these? Do you have access to the official source code or did you just do a fair amount of decompilation?

adamL · 03-27-2008

Quote:

Originally Posted by Pytak

Isn't that a iPod nano display in the M3? (just a guess)

i think the answer is here

wpyh · 03-28-2008

Quote:

Originally Posted by kgb2008

the Philips audio codec of M3 will be replaced with Wolfson 8987 from next week.

Where did you get this info?

kgb2008 · 03-28-2008

Quote:

Originally Posted by wpyh

Where did you get this info?

Meizu chinese official support forum
¼´ÈÕÆðÐÂ³ö³§µÄM3½«ÒôÆµÐ¾Æ¬¸ü»»ÎªWolfson8987[÷È×åÂÛÌ³]

In fact, this change is right there at the Feb.25 firmware upgrade, the UDA1380 occupies the i2c address 0x30 and WM8987 use 0x34, when the audio task is start, the code will try to set the analog volume register of UDA1380 and read it back, if unmatch, it will switch to WM8987 function set.

markun · 03-28-2008

I don't think we ever needed to put so much runtime detection in any of our rockbox targets before...

But I guess it's better than having many different firmwares and people needing to know which hardware they have exactly.

nice2know_u · 03-28-2008

Quote:

Originally Posted by kgb2008

Meizu often change their components in the same model, it's announced that the Philips audio codec of M3 will be replaced with Wolfson 8987 from next week.

Wow, great news! So I guess the M3's sound quality will reach the M6SL's :P

wpyh · 03-28-2008

Quote:

Originally Posted by kgb2008

Meizu chinese official support forum
¼´ÈÕÆðÐÂ³ö³§µÄM3½«ÒôÆµÐ¾Æ¬¸ü»»ÎªWolfson8987[÷È×åÂÛÌ³]

In fact, this change is right there at the Feb.25 firmware upgrade, the UDA1380 occupies the i2c address 0x30 and WM8987 use 0x34, when the audio task is start, the code will try to set the analog volume register of UDA1380 and read it back, if unmatch, it will switch to WM8987 function set.

Wow! I frequent that site but didn't notice his particular thread...

By the way, do you speak Chinese then?

wpyh · 03-28-2008

nice2know_u: Is the M6SL sound quality better than the M3? I don't have an M6SL, only an M3 and M6. How does the M6SL compare to the M6?

nice2know_u · 03-28-2008

I think the M6SL has the best sound quality of all meizu players (no hissing whatsoever). However I only had an M6SP before...
Here's a comparison thread