79853d2b28
With both counters in place, the number of bytes in the buffer is now indicated by the difference between the M0 and M4 counts. The M4 count needs to be increased whenever the M4 produces or consumes data in the USB bulk buffer, so that the two counts remain correctly synchronised. There are three places where this is done: 1. When a USB bulk transfer in or out of the buffer completes, the count is increased by the number of bytes transferred. This is the most common case. 2. At TX startup, the M4 effectively sends the M0 16K of zeroes to transmit, before the first host-provided data. This is done by zeroing the whole 32K buffer area, and then setting up the first bulk transfer to write to the second 16K, whilst the M0 begins transmission of the first 16K. The count is therefore increased by 16K during TX startup, to account for the initial 16K of zeros. 3. In sweep mode, some data is discarded. When this is done, the count is incremented by the size of the discarded data. The USB IRQ is masked whilst doing this, since a read-modify-write is required, and the bulk transfer completion callback may be called at any point, which also increases the count.
434 lines
11 KiB
C
434 lines
11 KiB
C
/*
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* Copyright 2012 Jared Boone
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* Copyright 2013 Benjamin Vernoux
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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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#include "usb_api_transceiver.h"
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#include "hackrf_ui.h"
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#include "operacake_sctimer.h"
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#include <libopencm3/cm3/vector.h>
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#include "usb_bulk_buffer.h"
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#include "m0_state.h"
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#include "usb_api_cpld.h" // Remove when CPLD update is handled elsewhere
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#include <max2837.h>
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#include <rf_path.h>
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#include <tuning.h>
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#include <streaming.h>
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#include <usb.h>
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#include <usb_queue.h>
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#include <stddef.h>
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#include <string.h>
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#include "usb_endpoint.h"
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#include "usb_api_sweep.h"
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typedef struct {
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uint32_t freq_mhz;
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uint32_t freq_hz;
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} set_freq_params_t;
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set_freq_params_t set_freq_params;
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struct set_freq_explicit_params {
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uint64_t if_freq_hz; /* intermediate frequency */
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uint64_t lo_freq_hz; /* front-end local oscillator frequency */
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uint8_t path; /* image rejection filter path */
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};
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struct set_freq_explicit_params explicit_params;
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typedef struct {
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uint32_t freq_hz;
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uint32_t divider;
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} set_sample_r_params_t;
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set_sample_r_params_t set_sample_r_params;
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usb_request_status_t usb_vendor_request_set_baseband_filter_bandwidth(
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usb_endpoint_t* const endpoint,
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const usb_transfer_stage_t stage
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) {
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if( stage == USB_TRANSFER_STAGE_SETUP ) {
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const uint32_t bandwidth = (endpoint->setup.index << 16) | endpoint->setup.value;
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if( baseband_filter_bandwidth_set(bandwidth) ) {
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usb_transfer_schedule_ack(endpoint->in);
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return USB_REQUEST_STATUS_OK;
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}
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return USB_REQUEST_STATUS_STALL;
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} else {
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return USB_REQUEST_STATUS_OK;
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}
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}
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usb_request_status_t usb_vendor_request_set_freq(
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usb_endpoint_t* const endpoint,
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const usb_transfer_stage_t stage)
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{
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if (stage == USB_TRANSFER_STAGE_SETUP)
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{
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usb_transfer_schedule_block(endpoint->out, &set_freq_params, sizeof(set_freq_params_t),
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NULL, NULL);
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return USB_REQUEST_STATUS_OK;
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} else if (stage == USB_TRANSFER_STAGE_DATA)
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{
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const uint64_t freq = set_freq_params.freq_mhz * 1000000ULL + set_freq_params.freq_hz;
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if( set_freq(freq) )
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{
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usb_transfer_schedule_ack(endpoint->in);
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return USB_REQUEST_STATUS_OK;
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}
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return USB_REQUEST_STATUS_STALL;
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} else
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{
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return USB_REQUEST_STATUS_OK;
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}
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}
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usb_request_status_t usb_vendor_request_set_sample_rate_frac(
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usb_endpoint_t* const endpoint,
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const usb_transfer_stage_t stage)
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{
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if (stage == USB_TRANSFER_STAGE_SETUP)
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{
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usb_transfer_schedule_block(endpoint->out, &set_sample_r_params, sizeof(set_sample_r_params_t),
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NULL, NULL);
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return USB_REQUEST_STATUS_OK;
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} else if (stage == USB_TRANSFER_STAGE_DATA)
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{
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if( sample_rate_frac_set(set_sample_r_params.freq_hz * 2, set_sample_r_params.divider ) )
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{
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usb_transfer_schedule_ack(endpoint->in);
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return USB_REQUEST_STATUS_OK;
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}
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return USB_REQUEST_STATUS_STALL;
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} else
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{
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return USB_REQUEST_STATUS_OK;
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}
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}
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usb_request_status_t usb_vendor_request_set_amp_enable(
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usb_endpoint_t* const endpoint, const usb_transfer_stage_t stage)
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{
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if (stage == USB_TRANSFER_STAGE_SETUP) {
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switch (endpoint->setup.value) {
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case 0:
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rf_path_set_lna(&rf_path, 0);
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usb_transfer_schedule_ack(endpoint->in);
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return USB_REQUEST_STATUS_OK;
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case 1:
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rf_path_set_lna(&rf_path, 1);
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usb_transfer_schedule_ack(endpoint->in);
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return USB_REQUEST_STATUS_OK;
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default:
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return USB_REQUEST_STATUS_STALL;
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}
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} else {
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return USB_REQUEST_STATUS_OK;
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}
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}
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usb_request_status_t usb_vendor_request_set_lna_gain(
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usb_endpoint_t* const endpoint,
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const usb_transfer_stage_t stage)
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{
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if( stage == USB_TRANSFER_STAGE_SETUP ) {
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const uint8_t value = max2837_set_lna_gain(&max2837, endpoint->setup.index);
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endpoint->buffer[0] = value;
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if(value) hackrf_ui()->set_bb_lna_gain(endpoint->setup.index);
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usb_transfer_schedule_block(endpoint->in, &endpoint->buffer, 1,
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NULL, NULL);
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usb_transfer_schedule_ack(endpoint->out);
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return USB_REQUEST_STATUS_OK;
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}
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return USB_REQUEST_STATUS_OK;
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}
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usb_request_status_t usb_vendor_request_set_vga_gain(
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usb_endpoint_t* const endpoint, const usb_transfer_stage_t stage)
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{
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if( stage == USB_TRANSFER_STAGE_SETUP ) {
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const uint8_t value = max2837_set_vga_gain(&max2837, endpoint->setup.index);
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endpoint->buffer[0] = value;
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if(value) hackrf_ui()->set_bb_vga_gain(endpoint->setup.index);
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usb_transfer_schedule_block(endpoint->in, &endpoint->buffer, 1,
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NULL, NULL);
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usb_transfer_schedule_ack(endpoint->out);
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return USB_REQUEST_STATUS_OK;
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}
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return USB_REQUEST_STATUS_OK;
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}
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usb_request_status_t usb_vendor_request_set_txvga_gain(
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usb_endpoint_t* const endpoint, const usb_transfer_stage_t stage)
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{
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if( stage == USB_TRANSFER_STAGE_SETUP ) {
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const uint8_t value = max2837_set_txvga_gain(&max2837, endpoint->setup.index);
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endpoint->buffer[0] = value;
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if(value) hackrf_ui()->set_bb_tx_vga_gain(endpoint->setup.index);
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usb_transfer_schedule_block(endpoint->in, &endpoint->buffer, 1,
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NULL, NULL);
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usb_transfer_schedule_ack(endpoint->out);
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return USB_REQUEST_STATUS_OK;
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}
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return USB_REQUEST_STATUS_OK;
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}
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usb_request_status_t usb_vendor_request_set_antenna_enable(
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usb_endpoint_t* const endpoint, const usb_transfer_stage_t stage)
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{
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if (stage == USB_TRANSFER_STAGE_SETUP) {
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switch (endpoint->setup.value) {
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case 0:
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rf_path_set_antenna(&rf_path, 0);
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usb_transfer_schedule_ack(endpoint->in);
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return USB_REQUEST_STATUS_OK;
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case 1:
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rf_path_set_antenna(&rf_path, 1);
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usb_transfer_schedule_ack(endpoint->in);
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return USB_REQUEST_STATUS_OK;
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default:
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return USB_REQUEST_STATUS_STALL;
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}
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} else {
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return USB_REQUEST_STATUS_OK;
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}
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}
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usb_request_status_t usb_vendor_request_set_freq_explicit(
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usb_endpoint_t* const endpoint,
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const usb_transfer_stage_t stage)
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{
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if (stage == USB_TRANSFER_STAGE_SETUP) {
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usb_transfer_schedule_block(endpoint->out, &explicit_params,
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sizeof(struct set_freq_explicit_params), NULL, NULL);
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return USB_REQUEST_STATUS_OK;
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} else if (stage == USB_TRANSFER_STAGE_DATA) {
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if (set_freq_explicit(explicit_params.if_freq_hz,
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explicit_params.lo_freq_hz, explicit_params.path)) {
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usb_transfer_schedule_ack(endpoint->in);
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return USB_REQUEST_STATUS_OK;
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}
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return USB_REQUEST_STATUS_STALL;
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} else {
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return USB_REQUEST_STATUS_OK;
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}
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}
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static volatile hw_sync_mode_t _hw_sync_mode = HW_SYNC_MODE_OFF;
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void set_hw_sync_mode(const hw_sync_mode_t new_hw_sync_mode) {
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_hw_sync_mode = new_hw_sync_mode;
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}
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volatile transceiver_request_t transceiver_request = {
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.mode = TRANSCEIVER_MODE_OFF,
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.seq = 0,
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};
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// Must be called from an atomic context (normally USB ISR)
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void request_transceiver_mode(transceiver_mode_t mode)
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{
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usb_endpoint_flush(&usb_endpoint_bulk_in);
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usb_endpoint_flush(&usb_endpoint_bulk_out);
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transceiver_request.mode = mode;
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transceiver_request.seq++;
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}
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void transceiver_shutdown(void)
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{
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baseband_streaming_disable(&sgpio_config);
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operacake_sctimer_reset_state();
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usb_endpoint_flush(&usb_endpoint_bulk_in);
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usb_endpoint_flush(&usb_endpoint_bulk_out);
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led_off(LED2);
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led_off(LED3);
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rf_path_set_direction(&rf_path, RF_PATH_DIRECTION_OFF);
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m0_state.tx = false;
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}
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void transceiver_startup(const transceiver_mode_t mode) {
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hackrf_ui()->set_transceiver_mode(mode);
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switch (mode) {
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case TRANSCEIVER_MODE_RX_SWEEP:
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case TRANSCEIVER_MODE_RX:
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led_off(LED3);
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led_on(LED2);
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rf_path_set_direction(&rf_path, RF_PATH_DIRECTION_RX);
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m0_state.tx = false;
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break;
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case TRANSCEIVER_MODE_TX:
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led_off(LED2);
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led_on(LED3);
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rf_path_set_direction(&rf_path, RF_PATH_DIRECTION_TX);
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m0_state.tx = true;
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break;
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default:
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break;
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}
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activate_best_clock_source();
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hw_sync_enable(_hw_sync_mode);
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m0_state.m0_count = 0;
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m0_state.m4_count = 0;
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}
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usb_request_status_t usb_vendor_request_set_transceiver_mode(
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usb_endpoint_t* const endpoint,
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const usb_transfer_stage_t stage)
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{
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if( stage == USB_TRANSFER_STAGE_SETUP ) {
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switch( endpoint->setup.value ) {
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case TRANSCEIVER_MODE_OFF:
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case TRANSCEIVER_MODE_RX:
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case TRANSCEIVER_MODE_TX:
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case TRANSCEIVER_MODE_RX_SWEEP:
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case TRANSCEIVER_MODE_CPLD_UPDATE:
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request_transceiver_mode(endpoint->setup.value);
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usb_transfer_schedule_ack(endpoint->in);
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return USB_REQUEST_STATUS_OK;
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default:
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return USB_REQUEST_STATUS_STALL;
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}
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} else {
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return USB_REQUEST_STATUS_OK;
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}
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}
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usb_request_status_t usb_vendor_request_set_hw_sync_mode(
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usb_endpoint_t* const endpoint,
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const usb_transfer_stage_t stage)
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{
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if( stage == USB_TRANSFER_STAGE_SETUP ) {
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set_hw_sync_mode(endpoint->setup.value);
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usb_transfer_schedule_ack(endpoint->in);
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return USB_REQUEST_STATUS_OK;
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} else {
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return USB_REQUEST_STATUS_OK;
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}
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}
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void transceiver_bulk_transfer_complete(void *user_data, unsigned int bytes_transferred)
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{
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(void) user_data;
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m0_state.m4_count += bytes_transferred;
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}
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void rx_mode(uint32_t seq) {
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unsigned int phase = 1;
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transceiver_startup(TRANSCEIVER_MODE_RX);
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baseband_streaming_enable(&sgpio_config);
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while (transceiver_request.seq == seq) {
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uint32_t m0_offset = m0_state.m0_count & USB_BULK_BUFFER_MASK;
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// Set up IN transfer of buffer 0.
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if (16384 <= m0_offset && 1 == phase) {
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usb_transfer_schedule_block(
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&usb_endpoint_bulk_in,
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&usb_bulk_buffer[0x0000],
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0x4000,
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transceiver_bulk_transfer_complete,
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NULL
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);
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phase = 0;
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}
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// Set up IN transfer of buffer 1.
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if (16384 > m0_offset && 0 == phase) {
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usb_transfer_schedule_block(
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&usb_endpoint_bulk_in,
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&usb_bulk_buffer[0x4000],
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0x4000,
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transceiver_bulk_transfer_complete,
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NULL
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);
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phase = 1;
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}
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}
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transceiver_shutdown();
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}
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void tx_mode(uint32_t seq) {
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unsigned int phase = 1;
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transceiver_startup(TRANSCEIVER_MODE_TX);
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memset(&usb_bulk_buffer[0x0000], 0, 0x8000);
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// Account for having filled buffer 0.
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m0_state.m4_count += 0x4000;
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// Set up OUT transfer of buffer 1.
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usb_transfer_schedule_block(
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&usb_endpoint_bulk_out,
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&usb_bulk_buffer[0x4000],
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0x4000,
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transceiver_bulk_transfer_complete,
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NULL
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);
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// Start transmitting zeros while the host fills buffer 1.
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baseband_streaming_enable(&sgpio_config);
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while (transceiver_request.seq == seq) {
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uint32_t m0_offset = m0_state.m0_count & USB_BULK_BUFFER_MASK;
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// Set up OUT transfer of buffer 0.
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if (16384 <= m0_offset && 1 == phase) {
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usb_transfer_schedule_block(
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&usb_endpoint_bulk_out,
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&usb_bulk_buffer[0x0000],
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0x4000,
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transceiver_bulk_transfer_complete,
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NULL
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);
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phase = 0;
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}
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// Set up OUT transfer of buffer 1.
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if (16384 > m0_offset && 0 == phase) {
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usb_transfer_schedule_block(
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&usb_endpoint_bulk_out,
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&usb_bulk_buffer[0x4000],
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0x4000,
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transceiver_bulk_transfer_complete,
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NULL
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);
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phase = 1;
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}
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}
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transceiver_shutdown();
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}
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void off_mode(uint32_t seq)
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{
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hackrf_ui()->set_transceiver_mode(TRANSCEIVER_MODE_OFF);
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while (transceiver_request.seq == seq);
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}
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