SPI Command Mode

The SPI interface of the radio transceiver can return status information on the MISO pin in the first byte of each of the transceiver access primitives. This section describes, how the information in this status byte is configured.

For more information about the MISO access and the status information refer to section Transceiver Access Primitives and to section 4.3 of the datasheet of the AT86RF231 datasheet.

Use Cases:

• SET_SPI_CMD_MODE
• GET_SPI_CMD_MODE

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SET_SPI_CMD_MODE

The content of the radio transceiver status information can be configured using SR_SPI_CMD_MODE. After reset, the content of the first byte sent on MISO to the microcontroller is set to 0x00.

Parameters:

spicmdmode

This parameter configures the status information in sub register SR_SPI_CMD_MODE to return the following status information during an SPI access: {0} : default (empty, all bits 0x00) {1} : monitor RG_TRX_STATUS register (see section State Changes) {2} : monitor RG_PHY_RSSI register (see section RSSI and ED Measurement) {3} : monitor RG_IRQ_STATUS register (see section Interrupts)

Code example

    /* AT86RF231::[ACTIVE] */
    trx_bit_write(SR_SPI_CMD_MODE, spicmdmode);

GET_SPI_CMD_MODE

Code example

    /* AT86RF231::[ACTIVE] */
    spicmdmode = trx_bit_read(SR_SPI_CMD_MODE);

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