RX/TX Indicator

This section describes, how the RX/TX indicator is configured.

If the RX/TX indicator is enabled, an ongoing frame transmission is indicated on pins DIG3/DIG4 with a differential signal. These signal can be used to control an external RF frontend independently from the MCU or to monitor the transmission timing. For more details refer to section 9.4 (RX/TX Indicator) of the AT86RF212 datasheet.

The RX/TX indicator feature can be enabled in one of the [CONFIG] states by writing the value 1 to the sub register SR_PA_EXT_EN.

Parameters:

rx_tx_indic

enable {1}/disable {0} RX/TX indicator.

Note:: In order to reduce the power consumption in the states TRX_OFF or SLEEP, the RX/TX indicator shall be disabled (rx_tx_indic=0).

Use Cases:

SET_RX_TX_INDICATOR

The RX/TX indicator is enabled when writing rx_tx_indic=1 to sub register SR_PA_EXT_EN.

Code example

    /* AT86RF212::[CONFIG] */
    trx_bit_write(SR_PA_EXT_EN, rx_tx_indic);

GET_RX_TX_INDICATOR

The value of rx_tx_indic is retrieved with the following use case:

Code example

    /* AT86RF212::[CONFIG] */
    rx_tx_indic = trx_bit_read(SR_PA_EXT_EN);