CAN_DEVCTL_DEBUG_INFO2

QNX SDP8.0Devctl and Ioctl CommandsDeveloper

Get specific debugging information

Synopsis:

#include <sys/can_dcmd.h>

#define CAN_DEVCTL_DEBUG_INFO2   __DIOT(_DCMD_MISC, CAN_CMD_CODE + 102, uint32_t)

Arguments to devctl():

Argument Value
filedes A file descriptor that you obtained by opening the device
dcmd CAN_DEVCTL_DEBUG_INFO2
dev_data_ptr A pointer to a uint32_t
n_bytes sizeof(uint32_t)
dev_info_ptr NULL

Description:

This command asks the driver to display specific debugging information. This information depends on the driver and the device; see src/hardware/can/board_name/board_namecan.readme in your Board Support Package.

Input:

A driver-specific number that affects what information the driver displays.

Output:

None.

Example:

int      ret;
unsigned print_debug_all = 1;

if( (fd = open( "/dev/can1/rx0", O_RDWR)) == -1 )
{
    printf("open of %s failed \n", devname);
    exit(EXIT_FAILURE);
}

if (EOK != (ret = devctl(fd, CAN_DEVCTL_DEBUG_INFO2, &print_debug_all,
                         sizeof(print_debug_all), NULL)))
{
    fprintf(stderr, "devctl CAN_DEVCTL_DEBUG_INFO: %s\n", strerror(ret));
}

See also:

devctl() in the QNX OS C Library Reference

canctl in the Utilities Reference

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