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authorzecke <zecke>2004-11-04 21:53:57 (UTC)
committer zecke <zecke>2004-11-04 21:53:57 (UTC)
commit37ff6dd391e4b6e0c537cd1d74e226dfdf1b86ba (patch) (side-by-side diff)
treeb261ff83d2f7b77f8663d433b08b005aabd8c184
parent5f56ab623c99c12ce246f775e065632fbfbbfc1f (diff)
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Use QTextStream and QFile instead of read/sscanf for parsing
ChipSelect3 (cs3). This should make it more robust
Diffstat (more/less context) (ignore whitespace changes)
-rw-r--r--libopie2/opiecore/device/odevice_simpad.cpp36
1 files changed, 17 insertions, 19 deletions
diff --git a/libopie2/opiecore/device/odevice_simpad.cpp b/libopie2/opiecore/device/odevice_simpad.cpp
index 9fde7f9..2e54216 100644
--- a/libopie2/opiecore/device/odevice_simpad.cpp
+++ b/libopie2/opiecore/device/odevice_simpad.cpp
@@ -202,73 +202,71 @@ void SIMpad::initButtons()
//SIMpad touchscreen backlight strength control
#define SIMPAD_BACKLIGHT_CONTROL "/proc/driver/mq200/backlight"
/*
* The SIMpad exposes ChipSelect3 to userspace
* via a proc filesystem file. Using this register
* one can toggle power of serial, irda, dect circuits
* change the video driver and display status and
* many more things.
* To not lose the current setting we read the current
* cs3 setting and toggle the necessary bits and then
* write it.
*/
static bool setCS3Bit( bool bitset, int bit ) {
- int cs3_fd = ::open( SIMPAD_BOARDCONTROL, O_RDONLY );
-
- if ( cs3_fd < 0 )
+ QFile file( SIMPAD_BOARDCONTROL );
+ if ( !file.open( IO_ReadOnly ) )
return false;
- static char line[32];
- int val = 0;
- bool ok = false;
+ unsigned int val = 0;
+ bool ok = false;
+ QTextStream stream( &file );
/*
- * try to read and parse the Chipselect3 status
- * be paranoid and make sure line[31] is null
- * terminated
+ * Use QFile and QTextStream for parsing to be more
+ * robust
*/
- while( !ok && ::read(cs3_fd, &line, sizeof(line)) > 0 ) {
- line[31] = '\0';
- if (::sscanf(line, "Chipselect3 : %x", &val ))
+ while ( !stream.atEnd() ) {
+ QString line = stream.readLine();
+ if ( line.startsWith( "Chipselect3 : " ) ) {
+ val = line.mid( 15 ).toUInt( 0, 16 );
ok = true;
+ break;
+ }
}
- ::close(cs3_fd);
-
- /*
- * we were not able to find the current value
- * and as a result we won't set it
- */
if ( !ok )
return false;
+ file.close();
+
/*
* change the value
*/
val = bitset ? (val | bit) : (val & ~bit);
/*
* write it back
*/
- cs3_fd = ::open( SIMPAD_BOARDCONTROL, O_WRONLY );
+ int cs3_fd = ::open( SIMPAD_BOARDCONTROL, O_WRONLY );
if ( cs3_fd < 0 )
return false;
+ char line[32];
::snprintf(line, sizeof(line), "0x%04x\n", val);
::write(cs3_fd, line, strlen(line));
::close(cs3_fd);
return true;
}
QValueList <OLed> SIMpad::ledList() const
{
QValueList <OLed> vl;
vl << Led_Power; //FIXME which LED is LED2 ? The green one or the amber one?
//vl << Led_Mail; //TODO find out if LED1 is accessible anyway
return vl;
}