HI, 

I am testing the long frame transmission using a Si4464 transceivers.

I have succeeded to t/rx  test with frames  from 1 byte to 1200 bytes partially.  But, the modules couldn't t/rx for specific sized frame. e.g. 102, 104 .... general expression is  (y = PKT_RX_THRESHOLD * x + (102  or 104) ).

When It had failed to t/rx , I found that the rx_end interrupt was NOT generated from the receiver side. (it generated ONLY rx_almost_full). And I checked that the transmitter side proceeded tx steps successfully until to tx_end interrupt phase.

But I couldn't figure out whether the issue is cause of Tx side or Rx side.

Our Requirements and the radio configuration register values  are listed below,

1. Requirements

 1) Data rate : 500 kbps

 2) Channel space : 1000 KHz

 3) Long frame support

2. Radio configuration register values : 

  1) FIFO ALMOST EMPTY/FULL Data Size

      - PKT_TX_THRESHOLD : 0x60, PKT_RX_THRESHOLD: 0x60

  2) Packet Handler HW interrupt

      - RF_INT_CTL_ENABLE_4 : [INT_CTL_PH_ENABLE : 0x33 - PSNT | PRX | TFAE | RFAF]

How can I fix this issue?

Hi,

I'm trying to add 2 extra bytes to the header in the radio configurator tool. i.e. 2 bytes for address filtering and 2 bytes for length.

When I set to 3 it's all happy and generates config files. When I set to 4 it fails and won't produce the configuration.

The error message is:-

"File generation failed.Error: PyException. For more information see the stack-trace in the Error Log. "

Where do I find the log file? What is the problem here?

Is this the correct place to add address filtering?  I am going to add some code to add address filter to this packet location.

The Documents say that the last bytes of the header are use for the length, so I assumed we can add whatever we like in front.

I am tryig to match another radio so I need these bytes to be before the length field.

You can use the simple trx with fifo sample to test this.

dev board: - brd4257a efr32fg14p233f256gm48

Thanks

In the Connect stack when is emberAfStackStatusCallback() ever called with EMBER_NETWORK_DOWN?

I am testing a Sleepy Sensor and if I power down the Sink at no point does this parameter get passed to emberAfStackStatusCallback() as it does in EmberZNet.

Thanks

Hi! 

I'm trying to communicate between PC and ezr32WG EVM through SPI.

I checked the application note of EFM32 about SPI and example source code but I cannot find the application note of EZR32.

Can you provide me some source code, pin map or guide about SPI interface in EZR32? 

Dear Forum members,

            The RAIL tutorial mentions the following for RX_DEMOD_DATA option - 

"Special data sources ... 

• RX_DEMOD_DATA: demodulated, but not sliced data. 1B per sample "

   I have the following questions in the context of using an EFR32 device to support a legacy (not frame friendly) FSK2 encoding.

   1. What does the '1B (byte?) per sample' represent?

                  a. What does sample refer to in this case (RX_DEMOD_DATA option)?  

                  b. In this case (RX_DEMOD_DATA), does 1B  represents 1 bit of demodulated data, or does it represent 8 bits of (unframed)demodulated data, or is it representing the over-sampled version?

                  c. In this case (RX_DEMOD_DATA), what is the fifo format(e.g how are the fifo bytes ordered) in relation to received data?

   2. When manchester decoding is enabled, how does the representation change?

Any advise is greatly appreciated!

Best Regards,

F Abdeen.

#define RF_FREQ_CONTROL_INT 0x11, 0x40, 0x01, 0x00, 0x1B
/*Default is 1B which = 434MHz
 * This is used to make large adjustments to the frequency
 * use the equation: Frequency = (RF_FREQ_CONTROL_INT + RF_FREQ_CONTROL_FRAC/2^19)  * 15MHz)
 * if the desired frequency is 450MHz
 * RF_FREQ_CONTROL = (450/15 - 1.933) The 1.933 value is assuming the RF_FREQ_CONTROL_FRAC is default
 * RF_FREQ_CONTROL = 28 = 0x1C, therefore the new code, for 450MHz is shown below
 * #define RF_FREQ_CONTROL_INT 0x11, 0x40, 0x01, 0x00, 0x1C
*/

#define RF_FREQ_CONTROL_FRAC 0x11, 0x40, 0x03, 0x01, 0x0F, 0x77, 0x77
/*Default value is 0x0F7777 which = 434MHz
 * this is used to fine-tune the frequency
 * use the equation Frequency = (RF_FREQ_CONTROL_INT + RF_FREQ_CONTROL_FRAC/2^19)  * 15MHz)
 */
 

 

 

Hi,

I am new to Z-Ware API's, I want to add "Fibaro Wallmote Quad" to my zwave network and controll lights/dimmers through it. So according to the "Z-Ware Library User Guide"  after adding the "Fibaro Wallmote Quad" to the network , I need to set SIS(controller)  node id into association group 1 and then set the callback function for central scenes. This will enable the controller to receive/know   which button was pressed through the callback function.

I used the the following function to add  SIS node id into association group 1 

////int zwif_group_add(zwifd_p ifd, uint8_t group, zwepd_p ep, uint8_t cnt);

$ zwif_group_add(command_class_association_interface_of_wallcontroller,  group_id, end_point_of_controller, 1);

this function always returns this error " ZW_ERR_QUEUED".

so I tried to disable command queuing using the below function but still I get the same error.

$zwnode_cmd_q_ena_set(node, 0) 

Can someone help me with this. Thanks in advance.

Dear Forum members,

 The reference manual states the following,

"

2.10 Unbuffered Data Transfer

For most system designs it is recommended to use the data buffering within EFR32 to provide a convenient user interface. In cases where data buffering within EFR32 is not desired, it is possible to set up direct unbuffered data transfers using a single-pin or two-pin interface on EFR32. A bit clock output is provided on the Serial Clock (SC) output pin, and a serial bitstream is provided to EFR32 in a transmit mode and from EFR32 in a receive mode. In unbuffered data transfer modes the hardware support provided by EFR32 to perform preamble and frame synchronization insertion in transmit mode and detection in receive mode can still optionally be used.

"

  How do I find which physical pins/internal signals/peripherals can be used to utilize the Serial Clock (SC) and Data functionality?

Thanks!

F Abdeen

hi all

I'm new to here,  i got few zm3102 module play around.  want learn howto program these modules

after few days googling and searchs , i can not find anywhere that have 4.5x version available to download. (the latest version that support 3xx series)

appreciate if anyone can help answer the question? 

Hello everyone,

I've recently started working on a proprietary radio application using the 'Wireless Gecko Multiband Kit' and an EFR32MG12 Mighty Gecko 434MHz Radio Board.  I've written test code using RAIL_StartRx() and RAIL_StartTx() calls which worked perfectly and have moved on to trying to use the RAIL Scheduling APIs to schedule periodic transmit and receive events.

While I have been able to get test code for scheduled transmissions using RAIL_StartScheduledTx() working just fine, I am having trouble with scheduling receive events using RAIL_ScheduleRx().  Even though I am certain that the events are scheduled 'in the future', the receiver never starts up and I never get a callback from RAIL.

The complete main.c code attached to the end of this post replaces main.c in the simple_trx_multiphy project provided in Simplicity Studio.  I have reconfigured the project to include the RAIL Library Multiprotocol (using the Plugins tab of the ISC), as I intend to use the sub-GHz radio of the Mighty Gecko to schedule reception of several different radio signal formats.

The snippet below includes the scheduling of the first RX event, which never appears to take place:

uint32_t rfTime = RAIL_GetTime() + 2000000;
		
RAIL_Status_t res;
RAIL_ScheduleRxConfig_t scheduledRxConfig = 
   { .start = rfTime, 
     .startMode = RAIL_TIME_ABSOLUTE,
     .end = (rfTime+250000), 
     .endMode = RAIL_TIME_ABSOLUTE,
     .rxTransitionEndSchedule = 0,
     .hardWindowEnd = 0 };

schedulerInfo = (RAIL_SchedulerInfo_t ) 
   { .priority = 100,
     .slipTime = 50000, 
     .transactionTime = 250000 }; 

// If we schedule an RX as below, it never takes place:
res = RAIL_ScheduleRx(gRailHandle1, 
                      0,
                      &scheduledRxConfig, 
                      &schedulerInfo);

if (res == RAIL_STATUS_NO_ERROR) {
	beaconRxComplete = false;
	rfTime += 2000000; // Add 2 seconds to the previous time.
} else {
	// In the current configuration this should never happen.
	while (1) {
	       beaconRxComplete = true; // Trap in loop - error.
	}
}

The attached main.c can be switched between TX and RX tests using the #define RXtest and #define TXtest definitions at the top.  It is not intended to be able to transmit and receive simultaneously - the transmit and receive demonstrations use the same callback to aid debugging.  When built as a TXtest the above code transmits a test packet once every 2 seconds without any obvious issues.

Can anyone suggest why - when configured to run the RXtest - the attached code appears to fail to schedule a receive window of 250ms once every 2 seconds as expected?

I can provide the entire project (via dropbox etc.) if it helps anyone to look at the issue; there's nothing proprietary in my test program.

Thanks in advance,

Chris Cotton.

Hello!

I'm trying to make a proprietary radio transmission protocol by using FlexGecko as an external radio connected to host by SPI bus.

SPI support is built on SPIDRV from SDK (EMDRV library). FlexGecko is a SPI Slave device, host (Raspberry Pi) is a Master. SPI clock is 4MHz.

SPI Connectivity and Radio connectivity as separate software pieces work flawlessly. I've written ping-pong tests for both SPI and Radio, everything just works fine at maximum speed, no glitches.

When I try to use both simultaneously, one of them eventually starts to freeze - after several dozens of seconds.

My question is: can there be any resource sharing conflict between SPIDRV and RAIL? Maybe, timers or LDMA controller?

Any workarounds or hints would be very appreciated.

Hi,

I am using si446x. Whenever I am to set a new baud rate, I generate new wds file and figures out what fields have changed. Then I call si446x_set_property() to set those parameters. Is there any built in library or source code provided by SiLab that does this it self. I just need to call an API like si446x_set_baud_rate() and do not need to worry about wds process.

Thanks,

Hi,

I designed RF baord based on si4438, in my board, the TX/RX are splited by s wireless switch AS179-92LF, and use SMA to connect to antenna.

I want to test the TX/RX signal level, I use 2 boards, connect the SMA ground together, and connect the antenna pin together too, attached photo for reference, I found the RX signal level is about 20dbm lower than the TX level, for example, I set the power level to 2(PA_PWR_LVL = 2), the TX level should be about -13dbm, but the RX level is about -33dbm(RSSI/2 - 134).

Is this correct? or the design is weak?

Dear Silicon Labs

I would like to correct the Tx Frequency of a board implementing an EFR32FG14 SoC.  But it is not clear to me what is the unit of the frequency offset passed to RAIL_SetFreqOffset() service. The documentations says : "The units on this chip are radio synthesizer resolution steps (synthTicks)." but how to set a frequency offset of +1Hz or -1Hz for instance.

Many thanks for your help

Thierry