Transmission of nRF2726 (nRF24Lu1P)

[TOSHIO UCHIDA]

We are looking for the sample software for transmission of nRF2726 (nRF24Lu1P). nRF2726 does not carry out transmitting operation in enhanced_shockburst_ptx_nrf24lu1p.uvproj.

Is our selection an error? Or does our operation have an error?

Please tell us the suitable soft and suitable operation method etc.

[Ole Morten]

I'm having some trouble understanding what you actually need to know. Could you please elaborate a little on what you want and what you've tried?

[TOSHIO UCHIDA]

Thanks.

We manufactured the dongle using nRF24LU1P. We began the checking of operations of this dongle. We would like to carry out transmitting operation of this dongle.

We are using Development Kit of nRF24LU1P , and nRF6700. First, we loaded the software for transmission to nRF2726, and checked whether it would transmit after the power supply. We compile enhanced_shockburst_ptx_nrf24lu1p.uvproj . It was loaded to nRF2726. C:\Nordic Semiconductor\nRFgo SDK 2.3.0.10040\source_code\projects\nrfgo_sdk\enhanced_shockburst_examples\ptx\Keil\nRF24lu1p

PC and J1 terminal of ｎRF6700 are connected by the USB cable. When the power supply was turned ON, 16 MHz of a clock operated. However, RF circuit seems not to operate. Transmitting operation is not carried out even if we push one of the eight buttons. Nothing appears on the screen of Spectrum Analyzer.

If transmitting operation can be performed normally, it will load to the dongle which we manufactured and will check transmitting operation.

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[Ole Morten]

To use the Enhanced ShockBurst examples from the SDK you must connect the buttons to P0 on the PTX side and the LEDs to P1 on the PRX side. This is unfortunately not explained in the nRF24LU1+ Development Kit User Guide, but you can refer to section 3 of the nRF24LE1 Development Kit User Guide. Just substitute the project names, and open the nRF24LU1+ version of them.

You should also note that the transmission when in ESB mode is packet based, and a spectrum analyzer may therefore have problems picking it up. The examples in the SDK stream packets continuously, so this should be less of a problem, but it could still be worth knowing. For a carrier wave setup, you can look into the radio tests available in nRFgo Studio.

[Everdoubtful]

Hi, i also encountered the same problems. There is no successful transmitting by interrupt - interrupt triggered and the flag is MAX_RT (// Transmission failed (maximum re-transmits) case (1 << (uint8_t)HAL_NRF_MAX_RT))

this case happened, i found out it by leds, i used this dongle(based on nRF24lu1p): wiki.bitcraze.se/.../projects:crazyradio:crazyradio_rev.d_schematics.pdf

I want know why it does not work.