Hi Vinoth,
Thanks for your reply,
i am working on i.MX53 QSB board,OS is WinCE7,
i dont have direct access to GPIO driver, we have one NLED (notification LED ) Driver through that we can access GPIOs,so what i am doing is i am accessing the NLED driver using the IOCTLs from application,IOCTL_NLED_SETDEVICE is one IOCTLS
to set perticular LED,My plan is i will fill the NLED_SETIINGS_INFO structure with required data,i will pass that to driver, i will refer LED number in Driver level i will compare in driver that if LED Number is equals to 1 i will access one GPIO
as per my requirement,if led number is equal to some X i will access some X GPIO,that is my plan but here problem is when i am passing the structure from application the address of the structure is corrupting some where so the values which i am passing from
application same is not getting at Driver level,where i am doing the mistake i am unable to trace is there any other way to access GPIO,i have created an IOCTL to pass one single argument then i can process GPIO but the IOCTL which i created also getting
fail.
please refer the application code which i am using.
BOOL NLED_Init(void)
{
NLED_SETTINGS_INFO LED_Config;
NLED_COUNT_INFO Leds_info; //Number of NLEDs on Board
int GPIO_Test_Variable;
int Number_of_Bytes_Rtnd;
Leds_info.cLeds = 0;
LED_Config.LedNum = 0; // LED number, 0 is first LED
LED_Config.OffOnBlink = 2; // 0 == off, 1 == on, 2 == blink
LED_Config.TotalCycleTime = 10; // total cycle time of a blink in microseconds
LED_Config.OnTime = 5; // on time of a cycle in microseconds
LED_Config.OffTime = 5; // off time of a cycle in microseconds
LED_Config.MetaCycleOn = 3; // number of on blink cycles
LED_Config.MetaCycleOff = 3; // number of off blink cycles
printf("********************************************* \n");
printf("********************************************* \n");
printf("APP:NLED Launched... \n");
RETAILMSG(1,(TEXT("APP:NLED Launched... \r\n")));
NLED_Handle = CreateFile(L"NLD1:", // name of device L"I2C1:",
GENERIC_READ|GENERIC_WRITE, // desired access
FILE_SHARE_READ|FILE_SHARE_WRITE, // sharing mode
NULL, // security attributes (ignored)
OPEN_EXISTING, // creation disposition
NULL,//FILE_FLAG_RANDOM_ACCESS, // flags/attributes
NULL); // template file (ignored)
if (NLED_Handle == (HANDLE)-1)
{
printf("APP:Unable to open handle to NLED\r\n");
RETAILMSG(1,(TEXT("APP:Unable to open handle to NLED Error:%d \r\n"),GetLastError()));
return FALSE;
}
else
{
printf("APP:NLED Init Success...\r\n");
RETAILMSG(1,(TEXT("APP:NLED Init Success... \r\n")));
printf("\r\nAPP:NLED_Handle = %d\r\n",NLED_Handle);
RETAILMSG(1,(TEXT("\r\n APP:NLED_Handle = %d\r\n"),NLED_Handle));
}
if (!DeviceIoControl(NLED_Handle, // file handle to the driver
IOCTL_NLED_SETDEVICE, // I/O control code
&LED_Config, // in buffer
sizeof(LED_Config), // in buffer size
NULL, // out buffer
0, // out buffer size
NULL, // pointer to number of bytes returned
NULL)) // ignored (=NULL)
{
RETAILMSG(1,(TEXT("\r\n APP:IOCTL_NLED_SETDEVICE Fail...\r\n")));
return FALSE;
}
else
{
RETAILMSG(1,(TEXT("\r\n APP:IOCTL_NLED_SETDEVICE Success...\r\n")));
}
please help me regarding this issue,
Thanks & Regards,
Mujeeb Shaik.
Mujeeb Shaik
