<![CDATA[QT c++ problems]]>I have a small c++ qt program using this code :```

//your code here
```static uint32_t  * gpioReg = MAP_FAILED;

uint32_t gpioRead_Bits_0_31(void)
{
   return (*(gpioReg + GPLEV0));
}

the compiler say error which is 

 error: invalid conversion from 'void*' to 'uint32_t* {aka unsigned int*}' [-fpermissive]

Can someone help me solved this problems??
]]>https://forum.qt.io/topic/62958/qt-c-problemsRSS for NodeWed, 22 Apr 2026 21:03:12 GMTTue, 19 Jan 2016 13:57:11 GMT60<![CDATA[Reply to QT c++ problems on Tue, 19 Jan 2016 14:08:48 GMT]]>You should also tell from which line the compiler error message comes from...

It seems that MAP_FAILED is a void pointer, so you should cast it:
static uint32_t * gpioReg = (uint32_t *)MAP_FAILED;

]]>https://forum.qt.io/post/308195https://forum.qt.io/post/308195Tue, 19 Jan 2016 14:08:48 GMT