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authorMarcel Holtmann <marcel@holtmann.org>2005-01-25 21:41:40 +0000
committerMarcel Holtmann <marcel@holtmann.org>2005-01-25 21:41:40 +0000
commit30fa99ad8cc79b6e4cb4620a31510d5a6cd31acd (patch)
tree9cd77f0bfa509fa9ab00ad4610eaef562709dc43 /tools
parentfefb12aae57e186c00a50a87a3725f8657fd95e2 (diff)
Add command for reading the clock
Diffstat (limited to 'tools')
-rw-r--r--tools/hcitool.19
-rw-r--r--tools/hcitool.c79
2 files changed, 88 insertions, 0 deletions
diff --git a/tools/hcitool.1 b/tools/hcitool.1
index 07f41421..d863e7d1 100644
--- a/tools/hcitool.1
+++ b/tools/hcitool.1
@@ -174,6 +174,15 @@ Change the connection link key for the device with Bluetooth address
.BI clkoff " <bdaddr>"
Read the clock offset for the device with Bluetooth address
.IR bdaddr .
+.TP
+.BI clock " <bdaddr> [which clock]"
+Read the clock for the device with Bluetooth address
+.IR bdaddr .
+The clock can be
+.BR 0
+for the local clock or
+.BR 1
+for the piconet clock (which is default).
.SH AUTHORS
Written by Maxim Krasnyansky <maxk@qualcomm.com> and Marcel Holtmann <marcel@holtmann.org>
.PP
diff --git a/tools/hcitool.c b/tools/hcitool.c
index 9f69ed01..8b7131a0 100644
--- a/tools/hcitool.c
+++ b/tools/hcitool.c
@@ -1545,6 +1545,84 @@ static void cmd_clkoff(int dev_id, int argc, char **argv)
free(cr);
}
+/* Read clock */
+
+static struct option clock_options[] = {
+ { "help", 0, 0, 'h' },
+ { 0, 0, 0, 0 }
+};
+
+static char *clock_help =
+ "Usage:\n"
+ "\tclock <bdaddr> [which clock]\n";
+
+static void cmd_clock(int dev_id, int argc, char **argv)
+{
+ struct hci_conn_info_req *cr;
+ bdaddr_t bdaddr;
+ uint8_t which;
+ uint32_t clock;
+ uint16_t accuracy;
+ int opt, dd;
+
+ for_each_opt(opt, clock_options, NULL) {
+ switch (opt) {
+ default:
+ printf(clock_help);
+ return;
+ }
+ }
+ argc -= optind;
+ argv += optind;
+
+ if (argc < 1) {
+ printf(clock_help);
+ return;
+ }
+
+ str2ba(argv[0], &bdaddr);
+
+ if (dev_id < 0) {
+ dev_id = hci_for_each_dev(HCI_UP, find_conn, (long) &bdaddr);
+ if (dev_id < 0) {
+ fprintf(stderr, "Not connected.\n");
+ exit(1);
+ }
+ }
+
+ dd = hci_open_dev(dev_id);
+ if (dd < 0) {
+ perror("HCI device open failed");
+ exit(1);
+ }
+
+ cr = malloc(sizeof(*cr) + sizeof(struct hci_conn_info));
+ if (!cr)
+ return;
+
+ bacpy(&cr->bdaddr, &bdaddr);
+ cr->type = ACL_LINK;
+ if (ioctl(dd, HCIGETCONNINFO, (unsigned long) cr) < 0) {
+ perror("Get connection info failed");
+ exit(1);
+ }
+
+ which = (argc > 1) ? atoi(argv[1]) : 0x01;
+
+ if (hci_read_clock(dd, htobs(cr->conn_info->handle), which, &clock, &accuracy, 1000) < 0) {
+ perror("Reading clock failed");
+ exit(1);
+ }
+
+ accuracy = btohs(accuracy);
+
+ printf("Clock: 0x%4.4x\n", btohl(clock));
+ printf("Accuracy: %.2f msec\n", (float) accuracy * 0.3125);
+
+ close(dd);
+ free(cr);
+}
+
static struct {
char *cmd;
void (*func)(int dev_id, int argc, char **argv);
@@ -1570,6 +1648,7 @@ static struct {
{ "enc", cmd_enc, "Set connection encryption" },
{ "key", cmd_key, "Change connection link key" },
{ "clkoff", cmd_clkoff, "Read clock offset" },
+ { "clock", cmd_clock, "Read local or remote clock" },
{ NULL, NULL, 0 }
};