michaelh/zephyr
1
0
Fork 0
Code Releases Activity

Bluetooth: shell: add RSSI filtering

Browse source 
This adds an RSSI cutoff, so any scanned devices that are below the given
value (in dB) will not get printed out. Very useful in noisy environments.

Signed-off-by: Jonathan Rico <jonathan.rico@nordicsemi.no>
This commit is contained in:
Jonathan Rico 2022-05-23 15:55:40 +02:00 • committed by Carles Cufí
commit 55179da0fc
1 changed files with 33 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

33
subsys/bluetooth/shell/bt.c
View file

@ -93,6 +93,8 @@ static struct bt_scan_filter {
bool name_set;
char addr[18]; /* fits xx:xx:xx:xx:xx:xx\0 */
bool addr_set;
int8_t rssi;
bool rssi_set;
} scan_filter;
@ -163,6 +165,10 @@ static void scan_recv(const struct bt_le_scan_recv_info *info,
return;
}
if (scan_filter.rssi_set && (scan_filter.rssi > info->rssi)) {
return;
}
shell_print(ctx_shell, "[DEVICE]: %s, AD evt type %u, RSSI %i %s "
"C:%u S:%u D:%d SR:%u E:%u Prim: %s, Secn: %s, "
"Interval: 0x%04x (%u ms), SID: 0x%x",
@ -1074,6 +1080,32 @@ static int cmd_scan_filter_set_addr(const struct shell *sh, size_t argc,
return 0;
}
static int cmd_scan_filter_set_rssi(const struct shell *sh, size_t argc, char *argv[])
{
int err = 0;
long rssi;
rssi = shell_strtol(argv[1], 10, &err);
if (!err) {
if (IN_RANGE(rssi, INT8_MIN, INT8_MAX)) {
scan_filter.rssi = (int8_t)rssi;
scan_filter.rssi_set = true;
shell_print(sh, "RSSI cutoff set at %d dB", scan_filter.rssi);
return 0;
}
shell_print(sh, "value out of bounds (%d to %d)", INT8_MIN, INT8_MAX);
err = -ERANGE;
}
shell_print(sh, "error %d", err);
shell_help(sh);
return SHELL_CMD_HELP_PRINTED;
}
static int cmd_scan_filter_clear_all(const struct shell *sh, size_t argc,
char *argv[])
{
@ -3244,6 +3276,7 @@ static int cmd_auth_oob_tk(const struct shell *sh, size_t argc, char *argv[])
SHELL_STATIC_SUBCMD_SET_CREATE(bt_scan_filter_set_cmds,
SHELL_CMD_ARG(name, NULL, "<name>", cmd_scan_filter_set_name, 2, 0),
SHELL_CMD_ARG(addr, NULL, "<addr>", cmd_scan_filter_set_addr, 2, 0),
SHELL_CMD_ARG(rssi, NULL, "<rssi>", cmd_scan_filter_set_rssi, 1, 1),
SHELL_SUBCMD_SET_END
);