CAN_DEVCTL_DEBUG

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));
}