The pcscd daemon on Mac OS X has a number of known bugs. In particular we encountered the problem described below

(direct quote from http://www.opensc-project.org/sca/wiki/LeopardBugs):

Cards declaring T=0 and T=15 protocols will be configured by pcscd as T=1. This is documented with SetCOS 4.4.1 (ATR: 3B 9F 94 80 1F C3 00 68 11 44 05 01 46 49 53 45 31 C8 07 90 00 19). With some readers (ACR38U), the card simply doesn’t answer to any APDU.

We have created a version of the ccid driver which works around this problem by limiting the number of reported protocols to 1. This forces pcscd to use the first supported protocol declared in the ATR by modifying the file atr.h

BEFORE

#define ATR_MAX_PROTOCOLS 7/* Maximun number of protocols */

AFTER

#define ATR_MAX_PROTOCOLS 1/* Maximun number of protocols */

You can download the patched driver here. Please disconnect any smart card reader before starting the installation procedure

To uninstall the patch open the terminal and enter the following command:

sudo rm -rf /usr/libexec/SmartCardServices/drivers/atrworkaround-ifd-ccid.bundle

Snippets

SQLiteman is a useful tool to mange SQLlite DB. We have compiled a binary version and packaged it into a .app for Mac OS X (64 bit only). We have only tested it on Snow Leopard but it may run also on Leopard.

To use it you first need to download and install a 64 bit version of Qt4 from:

http://get.qt.nokia.com/qt/source/qt-mac-cocoa-opensource-4.5.2.dmg

The precompiled version of SQLiteman 1.2.1 can be dowloaded here

Snippets database, SQlite, SQliteman

We have improved our iPhone applications. We have made a better integration for our mobility application “Roma bus” with more efficency and a new roadmap for future development. We have also fixed a very hard to find bug on our speech processing application for iPhone “Vocoder” and then made it faster and more stable.

Vocoder website

Romabus website

Snippets iPhone application, mobility, roma bus, speech processing, vocoder

Movenda is lunching an “open knowledge” training project. We’ll start a seminary on iPhone technology but we’ll soon add more arguments.

For further information please contact labs@movenda.com


The seminary will be held in Rome (Italy)

Snippets iphone open knowledge seminary

New version of optimized ARM code for image conversion (YUV to RGB) now fix some colour problem.

You can download the code here

Snippets

We have developed an optimized assembler code for image conversion from YUV to RGB. The code is based on the paper “Optimizing YUV-RGB Color Space Conversion Using Intel’s SIMD Technology“  by Etienne Dupuis, but adapted for the ARM processor found in the iPhone.

The average processing time for a 480 X 320 frame is 0.012 s.

Snippets ARM, iPhone, rgb, yuv, yuv2rgb

Movenda Bitmap Format mbf, photoshop

Movenda Bitmap Format mbf format RGB565 RGB

Movenda Bitmap Format mbf, trac

Movenda Bitmap Format mbf, photoshop