Merge pull request #293 from Montvydas/bugfix-ota-dfu-stuck

Set the default max MTU size within the DFU transport to 23

Author: hathach

lib/sdk11/components/libraries/bootloader_dfu/dfu_transport_ble.c

@@ -37,7 +37,7 @@
 
 
 #define BLEGAP_EVENT_LENGTH             6
-#define BLEGATT_ATT_MTU_MAX             247
+#define BLEGATT_ATT_MTU_MAX             23
 enum { BLE_CONN_CFG_HIGH_BANDWIDTH = 1 };
 
 #define DFU_REV_MAJOR                        0x00                                                    /** DFU Major revision number to be exposed. */

src/main.c

@@ -131,7 +131,7 @@ extern void tusb_hal_nrf_power_event(uint32_t event);
 
 // These value must be the same with one in dfu_transport_ble.c
 #define BLEGAP_EVENT_LENGTH             6
-#define BLEGATT_ATT_MTU_MAX             247
+#define BLEGATT_ATT_MTU_MAX             23
 enum { BLE_CONN_CFG_HIGH_BANDWIDTH = 1 };
 
 //--------------------------------------------------------------------+