Comments (1)
BLE characteristic only deals with octets or arrays of octets, i.e. byte-streams. If you're sending something bigger than a byte, then you need to format the data so that it can be placed in a byte array.
So if you want to sent a 32-bit unsigned integer, then you will have to set the size of the characteristic to 4*sizeof(uint8_t) and then divide the 32-bit integer into four 8-bit usigned integers, e.g.
uint32_t large_number = 64000;
uint8_t ble_data[4] = {0};
for(int i = 0; i < sizeof(ble_data);i++)
{
ble_data[i] = large_number >> (i*8);
}
On the central side you will have to reassemble the 32-bit integer from the notified data array
Array elements [ Bits 31- 24| Bits 23- 16 | Bits 15 -8 | Bits 7-0 ]
from custom_ble_service_example.
Related Issues (20)
- Thank you very much! HOT 1
- Error in Readme.md Walkthrough Steps - nRF 15.2.0 HOT 3
- Missing handling of NRF_ERROR_RESOURCES
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- example needs to add 2 service and 2 notifications HOT 3
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- Error 133 When Connecting with nRF Connect
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- Error While adding the mcuboot folder in repo. HOT 1
- sd_ble_gatts_hvx issue HOT 2
- Getting an error on step 7 HOT 1
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from custom_ble_service_example.