93 lines
3.2 KiB
C
93 lines
3.2 KiB
C
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/*
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* Copyright 2012 Will Code? (TODO: Proper attribution)
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* Copyright 2014 Jared Boone <jared@sharebrained.com>
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*
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* This file is part of HackRF.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __MAX2837_H
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#define __MAX2837_H
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#include <stdint.h>
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#include <stdbool.h>
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#include "gpio.h"
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#include "spi_bus.h"
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/* 32 registers, each containing 10 bits of data. */
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#define MAX2837_NUM_REGS 32
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#define MAX2837_DATA_REGS_MAX_VALUE 1024
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typedef enum {
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MAX2837_MODE_SHUTDOWN,
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MAX2837_MODE_STANDBY,
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MAX2837_MODE_TX,
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MAX2837_MODE_RX
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} max2837_mode_t;
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struct max2837_driver_t;
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typedef struct max2837_driver_t max2837_driver_t;
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struct max2837_driver_t {
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spi_bus_t* const bus;
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gpio_t gpio_enable;
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gpio_t gpio_rx_enable;
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gpio_t gpio_tx_enable;
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void (*target_init)(max2837_driver_t* const drv);
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void (*set_mode)(max2837_driver_t* const drv, const max2837_mode_t new_mode);
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max2837_mode_t mode;
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uint16_t regs[MAX2837_NUM_REGS];
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uint32_t regs_dirty;
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};
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/* Initialize chip. */
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extern void max2837_setup(max2837_driver_t* const drv);
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/* Read a register via SPI. Save a copy to memory and return
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* value. Mark clean. */
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extern uint16_t max2837_reg_read(max2837_driver_t* const drv, uint8_t r);
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/* Write value to register via SPI and save a copy to memory. Mark
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* clean. */
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extern void max2837_reg_write(max2837_driver_t* const drv, uint8_t r, uint16_t v);
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/* Write all dirty registers via SPI from memory. Mark all clean. Some
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* operations require registers to be written in a certain order. Use
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* provided routines for those operations. */
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extern void max2837_regs_commit(max2837_driver_t* const drv);
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max2837_mode_t max2837_mode(max2837_driver_t* const drv);
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void max2837_set_mode(max2837_driver_t* const drv, const max2837_mode_t new_mode);
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/* Turn on/off all chip functions. Does not control oscillator and CLKOUT */
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extern void max2837_start(max2837_driver_t* const drv);
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extern void max2837_stop(max2837_driver_t* const drv);
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/* Set frequency in Hz. Frequency setting is a multi-step function
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* where order of register writes matters. */
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extern void max2837_set_frequency(max2837_driver_t* const drv, uint32_t freq);
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uint32_t max2837_set_lpf_bandwidth(max2837_driver_t* const drv, const uint32_t bandwidth_hz);
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bool max2837_set_lna_gain(max2837_driver_t* const drv, const uint32_t gain_db);
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bool max2837_set_vga_gain(max2837_driver_t* const drv, const uint32_t gain_db);
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bool max2837_set_txvga_gain(max2837_driver_t* const drv, const uint32_t gain_db);
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extern void max2837_tx(max2837_driver_t* const drv);
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extern void max2837_rx(max2837_driver_t* const drv);
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#endif // __MAX2837_H
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