Hi, 

I am making a bluetooth HID joystick using BGM13S32F512GA chip on custom boards. My code works well with older revision of the chip(rev 1.2 with no PLFRCO), but the same code does not work well with rev 1.3 of the chip that has PLFRCO. I am doing following two changes to use PLFRCO:

1. Set bluetooth.sleep_clock_accuracy set to 500 (ppm) 
2. Inside initMcu_clocks(), skip configuring LFXO and configure PLFRCO 

When testing on my laptop with Win10, rev 1.2 chip works fine, but rev 1.3 chip does not connect, or if it does, it throw driver error or random disconnections. 

I am attaching my complete project so that the issue can be reproduced easily. This code reads the chip version from the chip to decide to configure PLFRCO or not, so it should run for both cases. It is a dummy joystick code that rotates the crosshair in circles, so that should be enough to reproduce the issue without connecting anything else.

A quick help will be appreciated! 

Thanks

Bilal 

My question is can we use the exact same pcb footprint that the BGX13P utilize to upgrade our device's to directly drop in the bgm210p mesh module instead of the bgx13p. 

Hi,

How can I get the correct device when I use bleupdate-cli get command?

This is what I am getting from all the modules I have:

BLE113-A: Always unknown

BLE113-A-M256K: Some unknown, some BLE113-A-M256k and some BLE113-A

Is there a reliable way to identify the module from a command line tool?

Hello, I tried to use the Bluetooth example code for the EFR32XG22 starter kit but the code is stuck in a loop. It doesn't hit any of my breakpoints. I used the example code from Simplicity Studio without any modifications and the files compiled without issue.

I am using the Bluetooth Empty SoC with the SLWSTK6021A. I'm using the EFR32MG22C224F512IM40 board provided with the kit.

This is fresh out of the box.

The code just loops though the following disassembly code. I tried this with a few example projects and I keep running into the same issue. I also uninstalled and reinstalled Simplicity Studio but the error persists.

I attemped this on the other QFN32 board and the code wasn't even able to read the disassembly memory at all.

Again, this is fresh out of the box. What is causing this issue?

 

 

 

Why do I need to manually add 0xFF bytes to the end of gbl files to be able to upload them?

Checking the source code for the EFR-connect app, it automatically adds these bytes to the end of the gbl file  to make the length divisible by 4.

I couldn't find this documented anywhere, pretty much just figured it out by trial-and-error.

If the gbl file needs to be in this format, why doesn't commander just generate them in the correct format?

Hi, this is probably a weird question, but I'll give it a shot.

I am working on an application to transmit power via 2.4GHz RF and need a source that I can send in to an amplifier for the transmitter. As we have other project using the EFR32MG22, it seemed like a decent choice. I have the EFR32 connected to an HMC414 Bluetooth amplifier with 20dB of gain. Theoretically, I should be able to get a total of 26dBm out if the EFR32 is connected and transmitting at 6dBm. I was able to verify that the hardware is somewhat working, loading a standard application onto the EFR32 and looking at the advertisement with my phone showed a fairly strong RSSI.

The difficulty now is how to configure the EFR32 to constantly activate the radio. The amplifier and receiver don't need a specific modulation, just a 2.4GHz sine wave. My current approach is connecting to the EFR32 with another device and subscribing to a notification and then having the EFR32 send this notification as often as possible. Based on the current consumption, I can see that the radio hits around a 70% duty cycle, but I would like to improve on the process.

Is there a way to have the EFR32 constantly send advertisements or empty notifications?

Thanks,

Ansel

Hello,

I can't understand how to make my printf work with the new SS v5, I implemented the LOG using the new interface .slcp and I put a printf in my bluetooth boot, but it writes nothing.

With the 2.13 and SS v4, it was easy using the INIT_LOG, how can I make the printf work again?

Hi,

I have questions related to power consumption of BGM13S, i referred the following link to reduce the power consumption during advertising and connected state ( Attached snap shows the result that i got )

 https://www.silabs.com/community/wireless/bluetooth/knowledge-base.entry.html/2017/08/25/optimizing_currentc-C4uw

Current consumption :

                                       1. Advertising =  around 25μA

                                       2. Connected =  around 15μA

The soc-empty example application is running, no other external components are connected to board.

I have connected the 500mAh battery to BGM13S ,which was 3.95V yesterday evening at 6:20pm, today evening at 6:20pm it is 3.85V  [ Battery life will be nearly 20days ].

My questions are :

1. How can i improve the battery life to at least 6 months......................................?

2. Energy profiler is enough to see the power consumption of entire custom board (or) we need any hardware component like DC analyzer.......................?

Thanks & regards

vijay

Hi!

I'm working with the BGM111 module. I noticed on the datasheet that it's listed as only BLE 4.2, while the EFR32BG1, the SoC I think it's based on, it's BLE 5.0.

Does the BGM111 support BLE 5?

Thanks!

Hello,

I am looking for example project which consumes lowest power possible. Here my beacon will only advertise @1000ms only. 

I am looking for how to use deep sleep functionalities and also how to disable all other peripherals and sensors. Thank you.

Hello,

i would like to implement Bluetooth positioning with Direction Finding (AoA) and i am very interested in one of your products the EFR32BG13 SoCs and the EFR32BG DK.Therefore i would like to ask you if you provide an Antenna array (phased) ?
Thank you very much in advance.

Hi Guys.

I could use some of your help.

My setup:

EFR32MG13 module.

soc-empty based application build with SDK 2.11.5.0.

GNU ARM 7.2.1 compiler (no IAR, hence no RTOS).

No LFXO, deep sleep (EM2) is enabled and runs off LFRCO.

Simple app with one custom GATT service, waking up periodically to start advertising for one minute and go back to sleep.

Advertising and connection is performed on le_gap_phy_coded only.

Code for handling new connection:

case gecko_evt_le_connection_opened_id:
{
	SLEEP_SleepBlockBegin(sleepEM2);

	connection = evt->data.evt_le_connection_opened.connection;
	bonding = evt->data.evt_le_connection_opened.bonding;
	is_connected = true;

	// disable advertising timer
	gecko_cmd_hardware_set_soft_timer(0, TH_TIMER_START_ADVERTISING, 0);

	gecko_cmd_le_gap_stop_advertising(ADVERTISER_HANDLE); // <-- this line causes problem

	th_local_time = RTCC_CounterGet();
	gecko_cmd_gatt_server_write_attribute_value(gattdb_timestamp, 0, 4, (uint8_t *)&th_local_time);

	gecko_cmd_sm_increase_security(connection);

	printSWO("connection opened\n");

	break;
}

The problem:

With the code above connection is closed instantly and the reported error code is 0x023e - connection_failed_to_be_established (Controller did not receive any packets from remote end). Remote end (also EFR32MG13) doesn't receive any packets about connection being opened.

However, when I comment out line with call to gecko_cmd_le_gap_stop_advertising, then it works just fine.

Also, it works fine with le_gap_phy_1m, could that be somehow related to le_gap_phy_coded (or its configuration) ?

Furthermore, this problem occurs only when devices are not bonded. For bonded modules everything works fine...

 

What could be causing such behavior? Any ideas?

I will be grateful for any help.

Marcin