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UM1657

SPIRIT1 DK - GUI description

Five panels are available:



Read registers.



Write registers.



Save register values.



SPIRIT1 information.



VCC_RF regulator.

To read the registers of the SPIRIT1 is necessary to write the address of the first register

from which starts the read operation. Then, it is necessary to write the number of registers to

read starting from that address.

To write a register of the SPIRIT1 is necessary to write the address of the register to modify

and the new value of the register.

All the registers of the SPIRIT1 can be read and saved in a text file by clicking the Save

button of the "Save register value" panel.

The SPIRIT1 status can be read by pressing the "SPIRIT1 state" button. Also the version of

the SPIRIT1 can be read.

Only for STEVAL-IKR001Vx - RF motherboard, the VCC_RF supply voltage for the SPIRIT1

can be changed be-tween 1.8 and 3.6 V.

Only for STEVAL-IKR002Vx - RF module and STEVAL-IKR001V8D, the offset of frequency

measured during production can be readout by the button Freq. offset.

The three buttons allow setting some particular test modes:



RX Data on GPIO



Send Data from GPIO



RX Data on GPIO No Packet

The RX Data on GPIO configures the GPIO_0 and the GPIO_1 of the SPIRIT1 to send

respectively the RX data received and the clock signal. In this way, when the SPIRIT1 goes

in RX state it is possible to see the packet received.

The Send Data from GPIO configures the GPIO_0 and the GPIO_1 of the SPIRIT1 to send

respectively the data to transmit and the clock to sample the data. In this way, when the

SPIRIT1 goes in TX state it is possible to send data loaded through the GPIO (and not

through the FIFO as usual).

The RX Data on GPIO No Packet is equals to the RX Data on GPIO with the only difference

that the packet handler embedded in the SPIRIT1 is by-passed.

3.3.3

How run a BER test using signal generator

Through the low level commands tab is possible to put the SPIRIT1 in RX direct more

through GPIOs. In this mode, the packet handler is totally bypassed and the demodulated

data plus associated clock signal is available on two GPIOs. This mode can be enabled by

the button "RX Data on GPIO No Packet". The two signals then can be used as in Figure LL

in a signal generator with BER option to allow measuring the Bit Error Rate according to that

particular radio configuration. The data must be sampled on falling edge of clock signal.

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