Tuesday, July 28, 2009

iPhone video running on Simulator

Can't work out how to get the audio working on the iPhone simulator!

Now have the band buttons working correctly.

Monday, July 27, 2009

Sub RX

Added Sub RX for tuning second receiver (DttSP thread) across the passband.

Note the TX controls beginning to appear - coming soon.

Friday, July 10, 2009

Audio streaming to iPhone

I now have the audio streaming from ghpsdr to the iPhone. I am sending it at 8K samples per second and sounds OK. Did a very simple implementation of taking 1 in 6 of the 48K samples being fed back to Mercury. Also just sending one channel.

Now it needs the ability to change band, filters and mode for a fully functional internet radio.

I should get a development board for the iPhone next week which will let me dock the iPhone and get access to line-in and line-out. I intend to look at taking the I/Q data from a softrock receiver and processing it directly on the iPhone. Should make a great little portable receiver.

Tuesday, July 7, 2009


I now have the iPhone working well displaying the spectrum from ghpsdr.

I have also added a button to configure the application.

Next step is to look at adding the audio stream.

Saturday, July 4, 2009

More iPhone

I have now got the iPhone working when I can see real time spectrum from ghpsdr using a tcp socket to get the data.

I also added the ability to change frequency by dragging on the iPhone display.

Now to try to get the audio streaming to the iPhone as well ;-)

Wednesday, July 1, 2009

iPhone teaser ...

I got a little side tracked this week playing with the iPhone SDK. I wanted to see if I could get something working that will, at a minimum, display the spectrum for the currently selected frequency so that I could monitor HPSDR remotely using my iPhone.

This is some prototype code running on the iPhone Simulator (it does run on my iPhone as well). It is updating the display 15 times per second. The data is currently 2 seconds of spectrum samples (30*4096 samples) that I captured using ghpsdr and wrote them to a file that are repeated while the application runs.

Next step is to add the ability to ghpsdr to write them to a socket connection and add the code to the iPhone to make a socket connection to ghpsdr.