Hello NXP Expert,
I am very new to the QNX and NXP S32G. I am trying to access eMMC Card through C Code. Earlier, we managed to access eMMC Card on Linux using the following sample code. But in QNX, it faced an issue using ioctl() calls.
Do you have any information and/or documents discussing accessing eMMC in QNX through programming?
I want to know how to read (ex. a device's physical sector size), write, and erase (number of blocks) in eMMC.
This API's like open() close(), lssek(), write() works.
Sample Code used for LINUX
int fd = open("/dev/mmcblk0", O_RDWR);
struct stat sb;
fstat(fd, &sb)
int secsize = 0;
ret = ioctl(fd, BLKSSZGET, &secsize); //a device's physical sector size
if (ret < 0)
{
// set the erase block size
uint64_t range[2];
range[0] = offset; // input address
range[1] = len; // input block size
if (ioctl(fd, BLKDISCARD, &range)
{
}
}
close(fd)
Best Regards,
Manoj
