We are using NRF52832 based Module in our design.
Currently BLE Services & characteristics used in our firmware:
1. Custom Service
characteristic 1: 37 Bytes
characteristic 2: 243 Bytes
characteristic 3: 40 Bytes
characteristic 4: 6 Bytes
characteristic 5: 2 Bytes
characteristic 6: 3 Bytes
characteristic 7: 3 Bytes
characteristic 8: 243 Bytes
characteristic 9: 106 Bytes
characteristic 10: 3 Bytes
characteristic 11: 64 Bytes
characteristic 12: 2 Bytes
2. Battery Service
3. Device Information Service
Model No characteristic 1:
Serial No characteristic 2:
Hardware No characteristic 3:
Firmware No characteristic 4:
Software No characteristic 5:
Manufacture Name characteristic 6:
Manufacture ID characteristic 7:
Queries as follows:
1. What is the maximum characteristics we can used in custom service. Is there any limitations. If so how many we can use.
2. If i use 12 characteristics what is the maximum size(bytes) we can use.
3. Currently in our custom BLE Service if we use characteristic(2(243), 8(243), 9(106)) we are getting a BLE Memory Error.
4. Memory Configuration:
FLASH_PH_START=0x0
FLASH_PH_SIZE=0x80000
RAM_PH_START=0x20000000
RAM_PH_SIZE=0x10000
FLASH_START=0x26000
FLASH_SIZE=0x5a000
RAM_START=0x20002ca0
RAM_SIZE=0xd360
5. Attribute Table Size in bytes
#define NRF_SDH_BLE_GATTS_ATTR_TAB_SIZE 1600 //Default Value: 1408
6. In Device Information Service if we use Manufacture ID we are getting BLE Disconnect after 2 hours of test.
Any help would be appreciated.
Thank you!
Pavan Kote
