I don't know how to do an async i2c driver.
Queue transfer descriptors in a linked list and have the i2c interrupt
service them, in queue order, calling a callback when each is completed.
Yes, it must be interrupt based.
I guess it's just the codec i2c driver on AMS that is like that. On i.M
On 5-11-2011 4:40, Michael Sevakis wrote:
>>> I think you misunderstood my point, you can implement it differently
>>> with another hardware without any problem. The proposed rds_
>>> interface doen't imply a particular way of doing things, is it ?
>
> It was not specific as far as what level had
On 5-11-2011 12:53, Michael Sevakis wrote:
> - Original Message - From: "Bertrik Sikken"
>> The Si4703 can be configured to capture one RDS packet, then
>> raise an pin voltage for 5 ms. My plan is to attach an interrupt
>> to this event that wakes up a high-prio thread to read the RDS
>>
I think you misunderstood my point, you can implement it differently with
another hardware without any problem. The proposed rds_ interface doen't
imply a particular way of doing things, is it ?
It was not specific as far as what level had a thread. If it's at the bottom
layer in the driver an
> Using another thread is probably (maybe) overkill on AMSv2 and i.MX31 and
> RDS isn't exactly a data flood so doing it without a thread from an I2C
> interrupt callback is probably economical. I'm not sure if any AMSv2
> players actually have an int line from the tuner chip though. The latter as
Using another thread is probably (maybe) overkill on AMSv2 and i.MX31 and
RDS isn't exactly a data flood so doing it without a thread from an I2C
interrupt callback is probably economical. I'm not sure if any AMSv2 players
actually have an int line from the tuner chip though. The latter as I rec
>
> I doubt all that is necessary especially with a tuner GPIO interrupt
> available in at least some cases and possibly the introduction of an async
> I2C driver (not too hard really). I'd suggest not imposing a particular
> interface on all hardware but have the hardware implement those details
- Original Message -
From: "Bertrik Sikken"
To: "Rockbox development"
Sent: Friday, November 04, 2011 4:52 PM
Subject: RDS support in Rockbox
The Si4703 can be configured to capture one RDS packet, then
raise an pin voltage for 5 ms. My plan is to attach an int
>
> I'm thinking of the following interface:
> - int rds_process(uint16_t data[4])
> which returns a number indicating what kind of data has been
> received. When something is received, the fm tuner driver can call
> a function to get a copy of the RDS data, something like:
> - bool rds_get_station
Hi all,
This is a proposal for extending RDS support in Rockbox.
Since I now have a stable target with hardware that supports RDS
(The Clip Zip, which has Si4703), I can really start working on this.
* What is RDS
RDS is a system for delivering data over FM radio. It's formatted
into 8
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