Rockbox Development > New Ports
Ingenic Jz4740/Jz4732 players
mcuelenaere:
--- Quote from: rosco_pc on July 16, 2008, 04:56:00 AM ---Just got an Onda VX757, but can not get the cross compiler to compile correctly. Here is the error while building libssp:
--- Code: ---../../../gcc-4.1.2/libssp/ssp.c: In function '__guard_setup':
../../../gcc-4.1.2/libssp/ssp.c:70: warning: implicit declaration of function 'open'
../../../gcc-4.1.2/libssp/ssp.c:70: error: 'O_RDONLY' undeclared (first use in this function)
../../../gcc-4.1.2/libssp/ssp.c:70: error: (Each undeclared identifier is reported only once
../../../gcc-4.1.2/libssp/ssp.c:70: error: for each function it appears in.)
../../../gcc-4.1.2/libssp/ssp.c:73: error: 'ssize_t' undeclared (first use in this function)
../../../gcc-4.1.2/libssp/ssp.c:73: error: expected ';' before 'size'
../../../gcc-4.1.2/libssp/ssp.c:75: warning: implicit declaration of function 'close'
--- End code ---
I googled around a bit, but could not really find any solution. Any ideas?
--- End quote ---
How did you compile this? (I suppose using rockboxdev.sh)
Try compiling with --disable-libssp; if that still doesn't work PM me and I'll give you a download link for the binaries Ingenic provides.
mcuelenaere:
I added a HOWTO on the OndaVX747 wiki page for running code from SDRAM, so people who are interested in this port can help out.
00christian00:
Hi Maurus,
sorry for the late reply.
I spoke with Ingenic and they said for tech support we first have to deal with their chinese agent(chinachip) buying the dev board for around 1500 usd plus another 1500 usd refundable when we buy 50k chips.
But I don't think the board will be of any use.
Do you need some kind of info not specific to the onda player?If yes I could try ask them directly.
But it seem all you need is specific to that model.
Also vx777 is confirmed to be jz4732,they don't have any player with jz4740 yet.
mcuelenaere:
--- Quote from: 00christian00 on August 02, 2008, 08:16:02 PM ---Hi Maurus,
sorry for the late reply.
I spoke with Ingenic and they said for tech support we first have to deal with their chinese agent(chinachip) buying the dev board for around 1500 usd plus another 1500 usd refundable when we buy 50k chips.
But I don't think the board will be of any use.
Do you need some kind of info not specific to the onda player?If yes I could try ask them directly.
But it seem all you need is specific to that model.
Also vx777 is confirmed to be jz4732,they don't have any player with jz4740 yet.
--- End quote ---
Hi Christian,
could they(Ingenic) provide any more information about their chips? Like datasheets, what the Jz4732 actually is, .... anything :)
Because the source code does help a lot, but without a datasheet some of the key components will be harder to figure out (for example the audio codec has some undocumented constants feeded in the code)
00christian00:
This is from Ingenic :
"Dear Christian,
Nice to receive your email. And I saw your products in the web, as you want to know the Jz4732 specification, you can find it as Jz4740 datasheet in our website. The difference between Jz4732 and Jz4740 is that we offer Jz4732 for overseas customers, and Jz4740 in Mainland of China. So if you want to know more about the Jz4732, please just see Jz4740 in ftp.ingenic.cn
"
So it's the same chip as jz4740.
Regarding the costant in the audio codec,where did you take them?In the audio driver for linux?
Can't you use the higher level function as they are?
I'll dig more info.
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