only one command is running that is read or write to phone in nimble ble. i am using bleprh

[madhusudan_jadhav]

I am using Bleprph example for security purposes. I want to send and receive data to the phone to esp32. I used gatt_svr_svc_sec_test_uuid for primary declaration and gatt_svr_chr_sec_test_static_uuid for rad and write.

but i can only able to send the data to phone by esp32. but data sent by phone doesnt appear on esp32.

Code: [Select all] [Expand/Collapse]

1. static const ble_uuid128_t gatt_svr_svc_sec_test_uuid =
2.     BLE_UUID128_INIT(0x2d, 0x71, 0xa2, 0x59, 0xb4, 0x58, 0xc8, 0x12,
3.                      0x99, 0x99, 0x43, 0x95, 0x12, 0x2f, 0x46, 0x59);
4.  
5. ///* 5c3a659e-897e-45e1-b016-007107c96df6 */
6. //static const ble_uuid128_t gatt_svr_chr_sec_test_rand_uuid =
7. //    BLE_UUID128_INIT(0xf6, 0x6d, 0xc9, 0x07, 0x71, 0x00, 0x16, 0xb0,
8. //                     0xe1, 0x45, 0x7e, 0x89, 0x9e, 0x65, 0x3a, 0x5c);
9. //
10. ///* 5c3a659e-897e-45e1-b016-007107c96df7 */
11. static const ble_uuid128_t gatt_svr_chr_sec_test_static_uuid =
12.     BLE_UUID128_INIT(0xf7, 0x6d, 0xc9, 0x07, 0x71, 0x00, 0x16, 0xb0,
13.                      0xe1, 0x45, 0x7e, 0x89, 0x9e, 0x65, 0x3a, 0x5c);
14.  
15.  
16. //static int device_read(uint16_t con_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg)
17. //{
18. //     // send_data[6]="Hello";
19. //  ctxt->om=0;
20. //  os_mbuf_append(ctxt->om, &arg, sizeof(arg));
21. //  for (int i =0;i < sizeof(arg);i++ ){
22. //
23. //          printf("%c",(char)send_data[i]);
24. //      }
25. //  //y = 1 for no cred found, y =2 wifi cred found y3 Y4 s1,y5y6 s2,y7y8 s3,y9 y10 s4
26. //
27. //return 0;
28. //}
29. //static int device_write(uint16_t conn_handle, uint16_t attr_handle, struct ble_gatt_access_ctxt *ctxt, void *arg)
30. //{
31. //    printf("Data from the client: %.*s\n", ctxt->om->om_len, ctxt->om->om_data);
32. //
33. //
34. //    for (int i =0;i < ctxt->om->om_len;i++ ){
35. //      recieve_data[i]=ctxt->om->om_data[i];
36. //      printf("%c",recieve_data[i]);
37. //    }
38. //
39. //    return 0;
40. //}
41. //
42.  
43.  
44. static int
45. gatt_svr_chr_write(struct os_mbuf *om, uint16_t min_len, uint16_t max_len,
46.                    void *dst, uint16_t *len)
47. {
48.     uint16_t om_len;
49.     int rc;
50.  
51.     om_len = OS_MBUF_PKTLEN(om);
52.     if (om_len < min_len || om_len > max_len) {
53.         return BLE_ATT_ERR_INVALID_ATTR_VALUE_LEN;
54.     }
55.  
56.     rc = ble_hs_mbuf_to_flat(om, dst, max_len, len);
57.     if (rc != 0) {
58.         return BLE_ATT_ERR_UNLIKELY;
59.     }
60.  
61.     return 0;
62. }
63.  
64. static int
65. gatt_svr_chr_access_sec_test(uint16_t conn_handle, uint16_t attr_handle,
66.                              struct ble_gatt_access_ctxt *ctxt,
67.                              void *arg)
68. {
69.     const ble_uuid_t *uuid;
70.     int rc;
71.      uint8_t dats[50]={0};
72.     uuid = ctxt->chr->uuid;
73.  
74.      if (ble_uuid_cmp(uuid, &gatt_svr_chr_sec_test_static_uuid.u) == 0) {
75.         switch (ctxt->op) {
76.         case BLE_GATT_ACCESS_OP_READ_CHR:
77.             if(state == 0){
78.             rc = os_mbuf_append(ctxt->om, &send_data,
79.                     sizeof (send_data));
80.  
81.             return rc == 0 ? 0 : BLE_ATT_ERR_INSUFFICIENT_RES;}
82.             else{
83.                         rc = os_mbuf_append(ctxt->om, &send_data1,
84.                                 sizeof (send_data1));
85.                         }
86.             return rc == 0 ? 0 : BLE_ATT_ERR_INSUFFICIENT_RES;
87.         case BLE_GATT_ACCESS_OP_WRITE_CHR:
88.             /*   rc = gatt_svr_chr_write(ctxt->om,
89.                                     sizeof gatt_svr_sec_test_static_val,
90.                                     sizeof gatt_svr_sec_test_static_val,
91.                                     &gatt_svr_sec_test_static_val, NULL);*/
92.             rc = gatt_svr_chr_write(ctxt->om,
93.                     sizeof dats,
94.                     sizeof dats,
95.                     &dats, NULL);
96.             for (int i =0;i < ctxt->om->om_len;i++ ){
97.                     recieve_data[i]=(char)dats[i];
98.                     printf("%c",recieve_data[i]);
99.                 }
100.  
101.             printf("writing done");return rc;
102.  
103.         default:
104.  
105.             assert(0);
106.             printf("writing error");
107.             return BLE_ATT_ERR_UNLIKELY;
108.         }
109.  
110.     }
111.  
112.     /* Unknown characteristic; the nimble stack should not have called this
113.      * function.
114.      */
115.     assert(0);
116.     return BLE_ATT_ERR_UNLIKELY;
117. }
118.     static const struct ble_gatt_svc_def gatt_svr_svcs[] = {
119.         {
120.             /*** Service: Security test. */
121.             .type = BLE_GATT_SVC_TYPE_PRIMARY,
122.             .uuid = &gatt_svr_svc_sec_test_uuid.u,
123.             .characteristics = (struct ble_gatt_chr_def[])
124.             {
125.  
126.                 {
127.                     /*** Characteristic: Static value. */
128.                     .uuid = &gatt_svr_chr_sec_test_static_uuid.u,
129.                     .access_cb = gatt_svr_chr_access_sec_test,
130.                     .flags = BLE_GATT_CHR_F_READ | BLE_GATT_CHR_F_READ_ENC |
131.                     BLE_GATT_CHR_F_WRITE | BLE_GATT_CHR_F_WRITE_ENC,
132.                 }, {
133.                     0, /* No more characteristics in this service. */
134.                 }
135.             },
136.         },
137.  
138.         {
139.             0, /* No more services. */
140.         },
141.     };
142.  
143. void
144. gatt_svr_register_cb(struct ble_gatt_register_ctxt *ctxt, void *arg)
145. {
146.     char buf[BLE_UUID_STR_LEN];
147.  
148.     switch (ctxt->op) {
149.     case BLE_GATT_REGISTER_OP_SVC:
150.         MODLOG_DFLT(DEBUG, "registered service %s with handle=%d\n",
151.                     ble_uuid_to_str(ctxt->svc.svc_def->uuid, buf),
152.                     ctxt->svc.handle);
153.         break;
154.  
155.     case BLE_GATT_REGISTER_OP_CHR:
156.         MODLOG_DFLT(DEBUG, "registering characteristic %s with "
157.                     "def_handle=%d val_handle=%d\n",
158.                     ble_uuid_to_str(ctxt->chr.chr_def->uuid, buf),
159.                     ctxt->chr.def_handle,
160.                     ctxt->chr.val_handle);
161.         break;
162.  
163.     case BLE_GATT_REGISTER_OP_DSC:
164.         MODLOG_DFLT(DEBUG, "registering descriptor %s with handle=%d\n",
165.                     ble_uuid_to_str(ctxt->dsc.dsc_def->uuid, buf),
166.                     ctxt->dsc.handle);
167.         break;
168.  
169.     default:
170.         assert(0);
171.         break;
172.     }
173. }
174.  
175. int
176. gatt_svr_init(void)
177. {
178.     int rc;
179.  
180.     ble_svc_gap_init();
181.     ble_svc_gatt_init();
182.     ble_svc_ans_init();
183.  
184.     rc = ble_gatts_count_cfg(gatt_svr_svcs);
185.     if (rc != 0) {
186.         return rc;
187.     }
188.  
189.     rc = ble_gatts_add_svcs(gatt_svr_svcs);
190.     if (rc != 0) {
191.         return rc;
192.     }
193.  
194.     return 0;
195. }
196.  

GeSHi © Codebox Plus Extension

[madhusudan_jadhav]

problem solved. i didnt corrctly passed data from om_data to char array

[sokolsok]

I'm right where you are.
Could you tell me the correct way to pass data from om_data to char array?