Implement reading characteristics by UUID in btgatt-client tool.
---
tools/btgatt-client.c | 84 +++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 84 insertions(+)
diff --git a/tools/btgatt-client.c b/tools/btgatt-client.c
index 7a1204f..f069189 100644
--- a/tools/btgatt-client.c
+++ b/tools/btgatt-client.c
@@ -401,6 +401,89 @@ static void cmd_services(struct client *cli, char *cmd_str)
services_usage();
}
+static void read_by_uuid_usage(void)
+{
+ printf("Usage: read-by-uuid <start_handle> <end_handle> <uuid>\n");
+}
+
+static void read_by_uuid_cb(bool success, uint8_t att_ecode,
+ struct read_by_uuid_res *result, void *user_data)
+{
+ uint16_t handle;
+ uint8_t length;
+ uint8_t *data;
+ int i;
+
+ if (!success) {
+ PRLOG("\nRead by UUID request failed: 0x%02x\n", att_ecode);
+ return;
+ }
+
+ if (!result) {
+ PRLOG("\nNo attribute found\n");
+ return;
+ }
+
+ for (; result; result = read_by_uuid_res_next(result)) {
+ read_by_uuid_res_get(result, &handle, &length, &data);
+ printf("\nHandle 0x%04X Read value", handle);
+
+ if (length == 0) {
+ PRLOG(": 0 bytes\n");
+ return;
+ }
+
+ printf(" (%u bytes): ", length);
+
+ for (i = 0; i < length; i++)
+ printf("%02x ", data[i]);
+
+ PRLOG("\n");
+ }
+}
+
+static void cmd_read_by_uuid(struct client *cli, char *cmd_str)
+{
+ char *argv[3];
+ int argc = 0;
+ uint16_t start_handle, end_handle;
+ bt_uuid_t tmp, uuid;
+ char *endptr = NULL;
+
+ if (!bt_gatt_client_is_ready(cli->gatt)) {
+ printf("GATT client not initialized\n");
+ return;
+ }
+
+ if (!parse_args(cmd_str, 3, argv, &argc) || argc != 3) {
+ read_by_uuid_usage();
+ return;
+ }
+
+ start_handle = strtol(argv[0], &endptr, 0);
+ if (!endptr || *endptr != '\0' || !start_handle) {
+ printf("Invalid value handle: %s\n", argv[0]);
+ return;
+ }
+
+ end_handle = strtol(argv[1], &endptr, 0);
+ if (!endptr || *endptr != '\0' || !end_handle) {
+ printf("Invalid value handle: %s\n", argv[1]);
+ return;
+ }
+
+ if (bt_string_to_uuid(&tmp, argv[2]) < 0) {
+ printf("Invalid UUID: %s\n", argv[2]);
+ return;
+ }
+
+ bt_uuid_to_uuid128(&tmp, &uuid);
+
+ if (!bt_gatt_client_read_by_uuid(cli->gatt, start_handle, end_handle,
+ uuid.value.u128.data, read_by_uuid_cb, NULL, NULL))
+ printf("Failed to initiate read value procedure\n");
+}
+
static void read_value_usage(void)
{
printf("Usage: read-value <value_handle>\n");
@@ -873,6 +956,7 @@ static struct {
"\tRead a characteristic or descriptor value" },
{ "read-long-value", cmd_read_long_value,
"\tRead a long characteristic or desctriptor value" },
+ { "read-by-uuid", cmd_read_by_uuid, "\tRead by UUID" },
{ "write-value", cmd_write_value,
"\tWrite a characteristic or descriptor value" },
{ "write-long-value", cmd_write_long_value,
--
1.9.3
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