Smart Bluetooth Forum Discussions
I have been trying to get the passkey operation to work, and have had a look at the various discussions and have a very simple question.
As the passkey operation is not working correctly, will connect to anything even if the passkeys do not match, when will this be fixed so that it will operate correctly ?
We've got a batch of boards that are nearly identical except some use the 2S and others use the 6S. We noticed that the newer boards with the 6S do not have the same range as the older 2S boards. The difference isn't huge, about 10% at most. More concerning is that the connections on the 2S boards seem to be more reliable (they don't spontaneously disconnect like the 6S ones do sometimes).
Has anyone else noticed this and if so, did you determine a root cause?
I'm trying to determine if this is an issue with the boards, the SDK or the modules. Since the modules are identical except for firmware I would guess that this is the least likely case. Leaving the boards or the SDK as potential differences, but I'm not sure how to detect/resolve any problems related the the SDK.Show Less
I have following questions to clarify the NFC offerings;
1. Does WICED Sense (BCM20737S) has a NFC Tag (or NFC Antenna?) inside? So I can trigger the BLE link when the Sense is inside the NFC Reader field. I can't find any other app notes on this, any guidence on how to implement this?
2. iPhones do not operate as NFC Readers, so this will not trigger the BCM20737S. I believe triggering a NFC Reader with a passive NFC chip and then triggering the BLE link on the NFC Reader side is also interesting. But I belive Broadcom chips operate on Passive NFC tag side? Is this correct?
3. What is the difference between the BCM43341 and BCM20737S regarding NFC?Show Less
I am tring to work on PUART by 20737TAG EVK. The RX can work but the TX over PUART can't. Here is the code.
1. Copy hello sensor to one new directory.
2. In INIT function:
//BLE_APP_ENABLE_TRACING_ON_PUART(); ////// Uncomment to disable all tracing
3. In hello_sensor_create
at the end of the function
4. Inside init_my_uart()
ble_trace0("Init uart port\r\n");
/* Clear INT */
P_UART_INT_ENABLE |= P_UART_ISR_RX_AFF_MASK;
// empty the FIFO
while(puart_rxFifoNotEmpty() && puart_read(&readbyte))
puart_rxCb = my_uart_rx_callback;
5. Test send function in timer
I have tried 115200/38400 and both can't work in the TX direction. But the RX works fine.Show Less
I have a custom board containing a BCM20736S module and trying to program it via my BCM20737 TAG board according to the documentation on this site. Two problems:
1. I am using a Tag-Connect.com six pin "bed of nails" to connect the custom board. Unfortunately it does not mate with the six pin pico header on the TAG board (JP1). It is problematic for me to build a proper cable with this small of a header and I fear signals are getting corrupted (data and clock on the uart_rx and uart_tx lines) when I run the cable through a breadboard.
Does anybody know where I can get a prebuilt cable for the JP1 pico-header on the TAG board? I found some parts at Molex but it is a pain to deal with this mundane cabling issue. Is it possible to use the J10 header instead? How about putting a more common connector on the TAG for the JP1 programming port?
2. I managed to cobble together some wires with pico-crimp and heat shrink insulation to connect to the JP1 programming header (UART_TX, GND, UART_RX, +VDDIO) .. I also have a reset button to pull reset low on my device, as well as a pull up on the RXD line (The factory programming example document is for the BCM20732S and I don't know if this pullup applies to the 736S as well...??).
Anyway, when I fire this up and try to download a program The SDK says it doesn't see a device. Two Red LEDs on the TAG board blink once very briefly and that's the end. I don't see any data going out on TX or RX...
I've tried RX pull UP and pull Down and swapping RX and TX and still nothing. Any suggestions? Are there other programming devices that would be easier than doing this with the TAG board?Show Less
I see you fixed the Android app to display Celsius. Is a fix planned for the iOS app, or am I just missing something?Show Less
For my application, I have an external RTC interrupt that I used to generate my own timing interrupts when desired.
Since I am using this, I have tried to turn off the fine and coarse timers in my application.
I did this by simply not calling the functions to set them up:
the 'fine timer' value in the ble_profile_cfg structure is 1024.
Although I am not getting any callbacks (since I did not register them), when looking at the current over time I suspect that there is still a wakeup happening, that is separate from my own RTC interrupt and from other things like beacons being transmitted. The spikes only occur when the radio is active (i.e. when advertising or connected).
The following plots show the spikes. In this plot, the RTC interrupts are marked with red arrows. The tall blue spikes are advertisement beacons being sent (the device began advertising around 7 seconds in this plot). The green spikes are the extra spikes I would like to get rid of, that I think might be timer wake ups. (NOTE: the large DC offset after start of advertising can be ignored - it is caused by an LED running)
This plot is a zoom of the above showing the area near the second pair of arrows.
NOTE also in the first small spike above you can see the RTC interrupt line pull against the GPIO internal pull-up, where there is some slightly higher current draw before the clock turns on (the clock is the 400uA draw before the spike). There is no equivalent draw in the second spike - i don't think this event is triggered by an external interrupt:
Is there anything else I need to do to prevent the application timers from firing and waking up the system? This did not happen in the 20732 because the application timers in that version never woke up the system -- they would implicitly synchronize with the beacons or other activity. Or is there something else that is likely to be happening that wasn't in the 20732? When a connection is active I register for connection event notifications, but I don't think that should be causing this because it should be de-registered.
I don't know what is causing them, but I do know that the application is quite similar to the version on the 20732, but on the 20736 I get these extra spikes that don't happen on the 20732. This causes a 50% increase in power cost during advertisement.Show Less
I know that most of cortex-m3 core can provide reset reason for debugging, could bcm20732s can provide this function? If so, how can I get it?Show Less
Can somebody help in enabling the USB in the WICED we've received? It's different from the board described in WICED-Smart-QSG202.pdfShow Less
There is a app available from Nordic Semiconductor in Google Play and also on AppStore for iOS user for testing their BLE Chip. Please see the link below :
nRF Toolbox App - Nordic Semiconductor
Is Broadcom planning to release a similar app in future for their BCM20736S Chip ?