Smart Bluetooth Forum Discussions

Does anyone have any experience or thoughts on implementing cryptographically secure pseudo-random or true-random number generation using WICED Smart SDK? I am looking for a way to generate nonces ( number only used once) for a crypto algorithm. pseudorandom number generators such as rand() function is not desirable for this application. The best approach would require tapping into a source of true randomness such as sampling high frequency clock (with high phase jitter) with low frequency clock. Other less secure ways would involve using time ( ss:mm:hh:dd) as seed to a an LFSR or something.

I'm using BRCM20737S and adc_readVoltage to read some measure which is output byvoltage. But, in some BRCM 207373S,  adc_readVoltage outs a wrong value, sometime. Pleasetell me how to use adc_readVoltage to read right value constantly?

Hi,

Every time I download program to SFLASH, I see 60-byte value starting at 0xF8002000, the beginning of volatile section 1.

It seems that the value is different for each download.  Could some one tell me what this value is?

I might have seen the related discussion but I can't find it.

Looking, for example, at hello_client.c leatt_regNotificationCb() registers a callback handler. The handler has parameters (int len, int attr_len, UINT8 *data).

In that callback, how can I distinguish which of the multiple slaves issued the notification? Perhaps there's a getter function equivalent to blecm_SetPtrConMux()? but I can't find it.

Is there any consideration or guideline regarding code migration from BCM20732S to BCM20736S? Any tips or hint is appreciated.

Thanks,

Mehrdad

Hi,

I have few question of Bluetooth LE low power. I can use lower connection interval and broadcast interval in slave side, and it can reduce the RF times of use. Did the MCU will went to the low power mode like pause or sleep mode without setting(For example: init =>send adv =>sleep =>wake up and send adv =>sleep....). I have try change my broadcast parameter(high duration:1s/30s; low duration:5s/300s). But the MCU isn't went to low power mode.

I have already read this thread: Sleep Deep_Sleep Explanation and Techniques

I have a question in Q&A:

>No, when advertising or in connection, the device will not go into deep sleep. However, it will go into other low power modes like sleep and pause based on the connection/ADV interval and other activities.  => I need set the module to sleep mode??  Or the stack will went to the sleep mode??

Jack