i2c data on ble

RE: i2c data on ble

RK — Thu, 31 Dec 2015 01:40:37 GMT

no of course you can't use the company identifier.

If you want three int16_t then define data as an array of ... 3 x int16_t instead of 3 x uint8_t. You must have the compiler warnings turned down, assigning three 16 bit values to an 8-bit array is usually something it would tell you about. Change to (not checked with a compiler, just typed straight in)

uint16_t data[3] = { x_val, y_val , z_val };
manuf_data.p_data = (uint8_t*)data;
manuf_data.data.size = sizeof( data )

.. and if you're thinking that will update the advertising data each time x_val etc change, it won't, but it will put the current values in.

RE: i2c data on ble

rushin — Wed, 30 Dec 2015 15:38:06 GMT

can i use uint16_t ble_advdata_manuf_data_t::company_identifier ??

RE: i2c data on ble

rushin — Wed, 30 Dec 2015 15:32:20 GMT

how can we edit size of manufacture data?

RE: i2c data on ble

rushin — Wed, 30 Dec 2015 15:31:29 GMT

yes i want 10 bits

RE: i2c data on ble

awneil — Wed, 30 Dec 2015 15:09:04 GMT

Clearly, you can't fit 16 bits (int16_t) into 8 bits (uint8_t) - so you're either going to have to do some of "compression", or expand the amount of data in your advertising packet.

For a start, does your accelerometer actually give you 16 bits of data?

Do you actually need the full resolution? Could you just discard some of the least-significant bits?