Hi Grzegorz,
On 16 April 2014 12:06, Grzegorz Kolodziejczyk
<grzegorz.kolodziejczyk@xxxxxxxxx> wrote:
> Now conversion function android2uuid can recognize type of uuid and set
> it value by copying significant bytes.
> ---
> android/gatt.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++----
> 1 file changed, 46 insertions(+), 4 deletions(-)
>
> diff --git a/android/gatt.c b/android/gatt.c
> index 243e02f..9163f6d 100644
> --- a/android/gatt.c
> +++ b/android/gatt.c
> @@ -54,6 +54,14 @@
> #define GATT_SUCCESS 0x00000000
> #define GATT_FAILURE 0x00000101
>
> +#define BASE_UUID16_OFFSET 12
> +#define BASE_UUID32_OFFSET 10
> +
> +static uint8_t BLUETOOTH_UUID[] = {
> + 0xfb, 0x34, 0x9b, 0x5f, 0x80, 0x00, 0x00, 0x80,
> + 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
> +};
> +
> struct gatt_client {
> int32_t id;
> uint8_t uuid[16];
> @@ -132,14 +140,48 @@ static struct queue *disc_dev_list = NULL; /* Disconnected devices */
>
> static void bt_le_discovery_stop_cb(void);
>
> +static int get_type_from_android_uuid(const uint8_t *uuid)
> +{
> + int i;
> +
> + for (i = 0; i < 16; i++) {
> + /* minimal uuid (16) value */
> + if (i == 12 || i == 13)
> + continue;
> +
> + if (uuid[i] != BLUETOOTH_UUID[i])
> + break;
> + }
> +
> + if (i < 12)
> + return BT_UUID128;
> + if (i < 14)
> + return BT_UUID32;
> + return BT_UUID16;
> +}
Since this is used for GATT operations you only need to handle either
16-bit or 128-bit UUIDs since 32-bit UUIDs should be converted to
128-bit for ATT PDU anyway.
BR,
Andrzej
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