I use BLE_p2pServer application, and try to send long size data to Mobile APP (LightBlue) or Rpi4 application (bulepy ).
I am only able to send 153 bytes for maximum.
May I ask how to exten ATT MTU SIZE > 153 bytes in the STM32WB55?
Thanks a lot.
My code modify as below:
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In app_conf.h:
/**
* Maximum supported ATT_MTU size
*/
#define CFG_BLE_MAX_ATT_MTU (250)
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In p2p_stm.c:
COPY_P2P_NOTIFY_UUID(uuid16.Char_UUID_128);
aci_gatt_add_char(aPeerToPeerContext.PeerToPeerSvcHdle,
UUID_TYPE_128, &uuid16,
200,
CHAR_PROP_NOTIFY,
ATTR_PERMISSION_NONE,
GATT_NOTIFY_ATTRIBUTE_WRITE, /* gattEvtMask */
10, /* encryKeySize */
1, /* isVariable: 1 */
&(aPeerToPeerContext.P2PNotifyServerToClientCharHdle));
=============================================
result = aci_gatt_update_char_value(aPeerToPeerContext.PeerToPeerSvcHdle,
aPeerToPeerContext.P2PNotifyServerToClientCharHdle,
0, /* charValOffset */
200, /* charValueLen */
(uint8_t *) pPayload);
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