diff --git a/nimble/host/services/hid/include/services/hid/ble_svc_hid.h b/nimble/host/services/hid/include/services/hid/ble_svc_hid.h
index 2a39241d4..c6261c8ef 100644
--- a/nimble/host/services/hid/include/services/hid/ble_svc_hid.h
+++ b/nimble/host/services/hid/include/services/hid/ble_svc_hid.h
@@ -58,7 +58,7 @@ extern "C" {
 
 struct report {
     uint8_t data[RPT_MAX_LEN];
-    uint8_t len;
+    uint16_t len;
     uint8_t type;
     uint8_t id;
     uint16_t handle;
@@ -110,10 +110,16 @@ struct ble_svc_hid_params{
     uint16_t ctrl_pt_handle;
 };
 
+typedef void (*ble_svc_hid_report_write_cb_t)(uint16_t attr_handle, uint8_t report_type,
+                                              uint8_t report_id, const uint8_t *data, uint16_t len);
+typedef void (*ble_svc_hid_char_write_cb_t)(uint16_t attr_handle, uint16_t char_uuid16, uint8_t value);
+
 void ble_svc_hid_init(void);
 void ble_svc_hid_deinit(void);
 int ble_svc_hid_add(struct ble_svc_hid_params params);
 void ble_svc_hid_reset(void);
+void ble_svc_hid_register_report_write_cb(ble_svc_hid_report_write_cb_t cb);
+void ble_svc_hid_register_char_write_cb(ble_svc_hid_char_write_cb_t cb);
 
 #ifdef __cplusplus
 }
diff --git a/nimble/host/services/hid/src/ble_svc_hid.c b/nimble/host/services/hid/src/ble_svc_hid.c
index 1eb422f98..ae99bc79a 100644
--- a/nimble/host/services/hid/src/ble_svc_hid.c
+++ b/nimble/host/services/hid/src/ble_svc_hid.c
@@ -54,6 +54,8 @@ static const ble_uuid16_t uuid_boot_kbd_inp = BLE_UUID16_INIT(BLE_SVC_HID_CHR_UU
 static const ble_uuid16_t uuid_boot_kbd_out = BLE_UUID16_INIT(BLE_SVC_HID_CHR_UUID16_BOOT_KBD_OUT);
 static const ble_uuid16_t uuid_boot_mouse_inp = BLE_UUID16_INIT(BLE_SVC_HID_CHR_UUID16_BOOT_MOUSE_INP);
 static const ble_uuid16_t uuid_hid_svc = BLE_UUID16_INIT(BLE_SVC_HID_UUID16);
+static ble_svc_hid_report_write_cb_t s_report_write_cb;
+static ble_svc_hid_char_write_cb_t s_char_write_cb;
 
 #if !MYNEWT_VAL(BLE_STATIC_TO_DYNAMIC)
 static struct ble_svc_hid_params hid_instances[HID_MAX_SVC_INSTANCES];
@@ -591,6 +593,9 @@ ble_svc_hid_access(uint16_t conn_handle, uint16_t attr_handle,
             }
             if(val == 0 || val == 1) {
                 rc = ble_svc_hid_chr_write(ctxt->om, 0, sizeof hid_instances[instance].ctrl_pt, &hid_instances[instance].ctrl_pt, NULL);
+                if (rc == 0 && s_char_write_cb) {
+                    s_char_write_cb(attr_handle, BLE_SVC_HID_CHR_UUID16_HID_CTRL_PT, hid_instances[instance].ctrl_pt);
+                }
                 return rc == 0 ? 0 : BLE_ATT_ERR_INSUFFICIENT_RES;
             }
             return BLE_ATT_ERR_UNLIKELY;
@@ -605,7 +610,13 @@ ble_svc_hid_access(uint16_t conn_handle, uint16_t attr_handle,
                                     sizeof(hid_instances[instance].kbd_out_rpt));
                 return rc == 0 ? 0 : BLE_ATT_ERR_INSUFFICIENT_RES;
             } else if (ctxt->op == BLE_GATT_ACCESS_OP_WRITE_CHR) {
-                rc = ble_svc_hid_chr_write(ctxt->om, 0, sizeof(hid_instances[instance].kbd_out_rpt), &hid_instances[instance].kbd_out_rpt, NULL);
+                rc = ble_svc_hid_chr_write(ctxt->om, 0, sizeof(hid_instances[instance].kbd_out_rpt),
+                                           &hid_instances[instance].kbd_out_rpt, &out_rpt_len);
+                if (rc == 0 && s_report_write_cb) {
+                    s_report_write_cb(attr_handle, BLE_SVC_HID_RPT_TYPE_OUTPUT, 0,
+                                      &hid_instances[instance].kbd_out_rpt,
+                                      out_rpt_len);
+                }
                 return rc == 0 ? 0 : BLE_ATT_ERR_INSUFFICIENT_RES;
             }
             return 0;
@@ -664,6 +675,9 @@ ble_svc_hid_access(uint16_t conn_handle, uint16_t attr_handle,
                 }
                 if(val == 0 || val == 1) {
                     rc = ble_svc_hid_chr_write(ctxt->om, 0, sizeof(hid_instances[instance].proto_mode), &hid_instances[instance].proto_mode, NULL);
+                    if (rc == 0 && s_char_write_cb) {
+                        s_char_write_cb(attr_handle, BLE_SVC_HID_CHR_UUID16_PROTOCOL_MODE, hid_instances[instance].proto_mode);
+                    }
                     return rc == 0 ? 0 : BLE_ATT_ERR_INSUFFICIENT_RES;
                 }
                 return BLE_ATT_ERR_UNLIKELY;
@@ -686,6 +700,9 @@ ble_svc_hid_access(uint16_t conn_handle, uint16_t attr_handle,
                     return BLE_ATT_ERR_INSUFFICIENT_RES;
                 }
                 rpt->len = out_rpt_len;
+                if (s_report_write_cb) {
+                    s_report_write_cb(attr_handle, rpt->type, rpt->id, rpt->data, rpt->len);
+                }
                 if (ctxt->chr->flags & BLE_GATT_CHR_F_NOTIFY) {
                     ble_gatts_chr_updated(*(ctxt->chr->val_handle));
                 }
@@ -865,5 +882,17 @@ ble_svc_hid_init(void)
     SYSINIT_PANIC_ASSERT(rc == 0);
 
 }
+
+void
+ble_svc_hid_register_report_write_cb(ble_svc_hid_report_write_cb_t cb)
+{
+    s_report_write_cb = cb;
+}
+
+void
+ble_svc_hid_register_char_write_cb(ble_svc_hid_char_write_cb_t cb)
+{
+    s_char_write_cb = cb;
+}
 #endif
 #endif // CONFIG_BT_NIMBLE_HID_SERVICE