3fd3c7786e
At this point, streaming has been stopped, so there will be no further SGPIO interrupts. However, the M0 will still be spinning on the interrupt flag, waiting to proceed. To ensure that the M0 actually reaches its idle loop, we set the SGPIO interrupt flag once. The M0 will then finish spinning on the flag, clear the flag, see the new mode setting, and jump to the idle loop.
439 lines
12 KiB
C
439 lines
12 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.mode = M0_MODE_IDLE;
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// The M0 may already be waiting for the next SGPIO
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// exchange interrupt. In order to ensure that the M0
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// switches over to its idle loop, we need to set the
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// SGPIO exchange interrupt flag here.
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SGPIO_SET_STATUS_1 = (1 << SGPIO_SLICE_A);
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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.mode = M0_MODE_RX;
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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.mode = M0_MODE_TX;
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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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