/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* include/linux/TODO
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*
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* userspace interface for pi433 radio module
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*
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* Pi433 is a 433MHz radio module for the Raspberry Pi.
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* It is based on the HopeRf Module RFM69CW. Therefore inside of this
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* driver, you'll find an abstraction of the rf69 chip.
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*
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* If needed, this driver could be extended, to also support other
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* devices, basing on HopeRfs rf69.
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*
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* The driver can also be extended, to support other modules of
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* HopeRf with a similar interace - e. g. RFM69HCW, RFM12, RFM95, ...
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* Copyright (C) 2016 Wolf-Entwicklungen
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* Marcus Wolf <linux@wolf-entwicklungen.de>
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*/
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#ifndef PI433_H
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#define PI433_H
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#include <linux/types.h>
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#include "rf69_enum.h"
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/*---------------------------------------------------------------------------*/
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enum option_on_off {
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OPTION_OFF,
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OPTION_ON
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};
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/* IOCTL structs and commands */
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/**
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* struct pi433_tx_config
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* describes the configuration of the radio module for sending
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* @frequency:
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* @bit_rate:
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* @modulation:
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* @data_mode:
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* @preamble_length:
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* @sync_pattern:
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* @tx_start_condition:
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* @payload_length:
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* @repetitions:
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*
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* ATTENTION:
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* If the contents of 'pi433_tx_config' ever change
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* incompatibly, then the ioctl number (see define below) must change.
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*
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* NOTE: struct layout is the same in 64bit and 32bit userspace.
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*/
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#define PI433_TX_CFG_IOCTL_NR 0
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struct pi433_tx_cfg {
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__u32 frequency;
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__u16 bit_rate;
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__u32 dev_frequency;
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enum modulation modulation;
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enum mod_shaping mod_shaping;
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enum pa_ramp pa_ramp;
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enum tx_start_condition tx_start_condition;
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__u16 repetitions;
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/* packet format */
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enum option_on_off enable_preamble;
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enum option_on_off enable_sync;
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enum option_on_off enable_length_byte;
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enum option_on_off enable_address_byte;
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enum option_on_off enable_crc;
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__u16 preamble_length;
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__u8 sync_length;
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__u8 fixed_message_length;
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__u8 sync_pattern[8];
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__u8 address_byte;
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};
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/**
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* struct pi433_rx_config
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* describes the configuration of the radio module for sending
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* @frequency:
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* @bit_rate:
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* @modulation:
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* @data_mode:
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* @preamble_length:
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* @sync_pattern:
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* @tx_start_condition:
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* @payload_length:
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* @repetitions:
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*
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* ATTENTION:
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* If the contents of 'pi433_rx_config' ever change
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* incompatibly, then the ioctl number (see define below) must change
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*
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* NOTE: struct layout is the same in 64bit and 32bit userspace.
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*/
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#define PI433_RX_CFG_IOCTL_NR 1
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struct pi433_rx_cfg {
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__u32 frequency;
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__u16 bit_rate;
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__u32 dev_frequency;
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enum modulation modulation;
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__u8 rssi_threshold;
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enum threshold_decrement threshold_decrement;
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enum antenna_impedance antenna_impedance;
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enum lna_gain lna_gain;
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enum mantisse bw_mantisse; /* normal: 0x50 */
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__u8 bw_exponent; /* during AFC: 0x8b */
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enum dagc dagc;
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/* packet format */
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enum option_on_off enable_sync;
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/* should be used in combination with sync, only */
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enum option_on_off enable_length_byte;
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/* operational with sync, only */
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enum address_filtering enable_address_filtering;
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/* only operational, if sync on and fixed length or length byte is used */
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enum option_on_off enable_crc;
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__u8 sync_length;
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__u8 fixed_message_length;
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__u32 bytes_to_drop;
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__u8 sync_pattern[8];
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__u8 node_address;
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__u8 broadcast_address;
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};
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#define PI433_IOC_MAGIC 'r'
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#define PI433_IOC_RD_TX_CFG \
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_IOR(PI433_IOC_MAGIC, PI433_TX_CFG_IOCTL_NR, char[sizeof(struct pi433_tx_cfg)])
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#define PI433_IOC_WR_TX_CFG \
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_IOW(PI433_IOC_MAGIC, PI433_TX_CFG_IOCTL_NR, char[sizeof(struct pi433_tx_cfg)])
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#define PI433_IOC_RD_RX_CFG \
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_IOR(PI433_IOC_MAGIC, PI433_RX_CFG_IOCTL_NR, char[sizeof(struct pi433_rx_cfg)])
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#define PI433_IOC_WR_RX_CFG \
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_IOW(PI433_IOC_MAGIC, PI433_RX_CFG_IOCTL_NR, char[sizeof(struct pi433_rx_cfg)])
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#endif /* PI433_H */
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