static void att_prepare_write_rsp(struct bt_conn *conn, uint8_t err,
const void *pdu, uint16_t length,
void *user_data)
{
struct prepare_write_data *data = user_data;
bt_gatt_rsp_func_t func = data->func;
BT_DBG("err 0x%02x", err);
/* Reset func so next prepare don't fail */
data->func = NULL;
/* Don't continue in case of error */
if (err) {
func(conn, err);
return;
}
/* If there is no more data execute */
if (!data->length) {
gatt_exec_write(conn, func);
return;
}
/* Write next chunk */
bt_gatt_write(conn, data->handle, data->offset, data->data,
data->length, func);
}
static int cmd_gatt_write(int argc, char *argv[])
{
int err;
uint16_t handle, offset;
uint8_t buf[100];
uint8_t data;
if (!default_conn) {
printk("Not connected\n");
return 0;
}
if (argc < 4) {
return -EINVAL;
}
handle = strtoul(argv[1], NULL, 16);
/* TODO: Add support for longer data */
offset = strtoul(argv[2], NULL, 16);
data = strtoul(argv[3], NULL, 16);
if (argc == 5) {
size_t len = min(strtoul(argv[4], NULL, 16), sizeof(buf));
int i;
for (i = 0; i < len; i++) {
buf[i] = data;
}
write_params.data = buf;
write_params.length = len;
} else {
write_params.data = &data;
write_params.length = sizeof(data);
}
write_params.handle = handle;
write_params.offset = offset;
write_params.func = write_func;
err = bt_gatt_write(default_conn, &write_params);
if (err) {
printk("Write failed (err %d)\n", err);
} else {
printk("Write pending\n");
}
return 0;
}