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apps/examples/can: Use new IOCTL commands to show the current bit timing values

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This commit is contained in:
Gregory Nutt 2015-08-18 11:21:47 -06:00
parent cb25507a06
commit 9abb28c725
1 changed files with 20 additions and 0 deletions
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20
examples/can/can_main.c
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@ -40,6 +40,7 @@
#include <nuttx/config.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <stdio.h>
#include <stdlib.h>
@ -138,6 +139,7 @@ int main(int argc, FAR char *argv[])
int can_main(int argc, char *argv[])
#endif
{
struct canioc_bittiming_s bt;
#ifndef CONFIG_EXAMPLES_CAN_READONLY
struct can_msg_s txmsg;
#ifdef CONFIG_CAN_EXTID
@ -296,6 +298,24 @@ int can_main(int argc, char *argv[])
goto errout_with_dev;
}
/* Show bit timing information .. if provided by the driver. Not all CAN
* drivers will support this IOCTL.
*/
ret = ioctl(fd, CANIOC_GET_BITTIMING, (unsigned long)((uintptr_t)&bt));
if (ret < 0)
{
printf("Bit timing not available: %d\n", errno);
}
else
{
printf("Bit timing:\n");
printf(" Baud: %lu\n", (unsigned long)bt.bt_baud);
printf(" TSEG1: %u\n", bt.bt_tseg1);
printf(" TSEG2: %u\n", bt.bt_tseg2);
printf(" SJW: %u\n", bt.bt_sjw);
}
/* Now loop the appropriate number of times, performing one loopback test
* on each pass.
*/