Add initial support for the ChronoVu LA8.
This commit is contained in:
Uwe Hermann
parent
8a7b47cdfa
commit
f4314d7e06
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@ -20,6 +20,7 @@
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SUBDIRS = \
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alsa \
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asix-sigma \
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chronovu-la8 \
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common \
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demo \
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link-mso19 \
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@ -42,6 +43,10 @@ if LA_ASIX_SIGMA
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libsigrokhardware_la_LIBADD += asix-sigma/libsigrokhwasixsigma.la
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endif
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if LA_CHRONOVU_LA8
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libsigrokhardware_la_LIBADD += chronovu-la8/libsigrokhwchronovula8.la
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endif
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if LA_DEMO
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libsigrokhardware_la_LIBADD += demo/libsigrokhwdemo.la
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endif
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@ -0,0 +1,32 @@
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##
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## This file is part of the sigrok project.
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##
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## Copyright (C) 2011 Uwe Hermann <uwe@hermann-uwe.de>
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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 of the License, or
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## (at your option) 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; if not, write to the Free Software
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## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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##
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if LA_CHRONOVU_LA8
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# Local lib, this is NOT meant to be installed!
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noinst_LTLIBRARIES = libsigrokhwchronovula8.la
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libsigrokhwchronovula8_la_SOURCES = \
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chronovu-la8.c
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libsigrokhwchronovula8_la_CFLAGS = \
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-I$(top_srcdir)/libsigrok
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endif
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@ -0,0 +1,991 @@
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/*
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* This file is part of the sigrok project.
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*
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* Copyright (C) 2011 Uwe Hermann <uwe@hermann-uwe.de>
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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 of the License, or
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* (at your option) 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; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <ftdi.h>
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#include <sigrok.h>
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#define USB_VENDOR_ID 0x0403
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#define USB_PRODUCT_ID 0x6001
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#define USB_DESCRIPTION "ChronoVu LA8"
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#define USB_VENDOR_NAME "ChronoVu"
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#define USB_MODEL_NAME "LA8"
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#define USB_MODEL_VERSION ""
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#define NUM_PROBES 8
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#define TRIGGER_TYPES "01"
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#define SDRAM_SIZE (8 * 1024 * 1024)
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#define MIN_NUM_SAMPLES 1
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static GSList *device_instances = NULL;
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struct la8 {
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/** FTDI device context (used by libftdi). */
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struct ftdi_context *ftdic;
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/** The currently configured samplerate of the device. */
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uint64_t cur_samplerate;
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/** The current sampling limit (in ms). */
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uint64_t limit_msec;
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/** The current sampling limit (in number of samples). */
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uint64_t limit_samples;
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/** The number of probes. */
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int num_probes;
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/** TODO */
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gpointer session_id;
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/**
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* An 8MB buffer containing the (mangled) samples from the device.
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* Format: Pretty mangled-up (due to hardware reasons), see code.
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*/
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uint8_t *mangled_buf;
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/**
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* An 8MB buffer where we'll store the de-mangled samples.
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* Format: Each sample is 1 byte, MSB is channel 7, LSB is channel 0.
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*/
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uint8_t *final_buf;
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/**
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* Trigger pattern (MSB = channel 7, LSB = channel 0).
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* A 1 bit matches a high signal, 0 matches a low signal on a probe.
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* Only low/high triggers (but not e.g. rising/falling) are supported.
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*/
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uint8_t trigger_pattern;
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/**
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* Trigger mask (MSB = channel 7, LSB = channel 0).
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* A 1 bit means "must match trigger_pattern", 0 means "don't care".
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*/
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uint8_t trigger_mask;
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/** Time (in seconds) before the trigger times out. */
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uint64_t trigger_timeout;
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/** TODO */
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time_t done;
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/** Counter/index for the data block (0..2047) to be read. */
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int block_counter;
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/** The divcount value (determines the sample period) for the LA8. */
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uint8_t divcount;
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};
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/* This will be initialized via hw_get_device_info()/SR_DI_SAMPLERATES. */
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static uint64_t supported_samplerates[255 + 1] = { 0 };
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/*
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* Min: 1 sample per 0.01us -> sample time is 0.084s, samplerate 100MHz
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* Max: 1 sample per 2.55us -> sample time is 21.391s, samplerate 392.15kHz
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*/
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static struct sr_samplerates samplerates = {
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.low = 0,
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.high = 0,
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.step = 0,
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.list = supported_samplerates,
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};
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/* Note: Continuous sampling is not supported by the hardware. */
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static int capabilities[] = {
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SR_HWCAP_LOGIC_ANALYZER,
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SR_HWCAP_SAMPLERATE,
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SR_HWCAP_LIMIT_MSEC, /* TODO: Not yet implemented. */
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SR_HWCAP_LIMIT_SAMPLES, /* TODO: Not yet implemented. */
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0,
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};
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/* Function prototypes. */
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static int la8_close_usb_reset_sequencer(struct la8 *la8);
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static void hw_stop_acquisition(int device_index, gpointer session_device_id);
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static int la8_reset(struct la8 *la8);
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static void fill_supported_samplerates_if_needed(void)
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{
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int i;
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/* Do nothing if supported_samplerates[] is already filled. */
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if (supported_samplerates[0] != 0)
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return;
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/* Fill supported_samplerates[] with the proper values. */
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for (i = 0; i < 255; i++)
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supported_samplerates[254 - i] = SR_MHZ(100) / (i + 1);
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supported_samplerates[255] = 0;
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}
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/**
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* Check if the given samplerate is supported by the LA8 hardware.
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*
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* @param samplerate The samplerate (in Hz) to check.
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* @return 1 if the samplerate is supported/valid, 0 otherwise.
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*/
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static int is_valid_samplerate(uint64_t samplerate)
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{
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int i;
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fill_supported_samplerates_if_needed();
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for (i = 0; i < 255; i++) {
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if (supported_samplerates[i] == samplerate)
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return 1;
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}
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g_warning("la8: %s: invalid samplerate (%" PRIu64 "Hz)",
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__func__, samplerate);
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return 0;
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}
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/**
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* Convert a samplerate (in Hz) to the 'divcount' value the LA8 wants.
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*
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* LA8 hardware: sample period = (divcount + 1) * 10ns.
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* Min. value for divcount: 0x00 (10ns sample period, 100MHz samplerate).
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* Max. value for divcount: 0xfe (2550ns sample period, 392.15kHz samplerate).
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*
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* @param samplerate The samplerate in Hz.
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* @return The divcount value as needed by the hardware, or 0xff upon errors.
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*/
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static uint8_t samplerate_to_divcount(uint64_t samplerate)
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{
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if (samplerate == 0) {
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g_warning("la8: %s: samplerate was 0", __func__);
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return 0xff;
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}
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if (!is_valid_samplerate(samplerate)) {
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g_warning("la8: %s: can't get divcount, samplerate invalid",
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__func__);
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return 0xff;
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}
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return (SR_MHZ(100) / samplerate) - 1;
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}
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/**
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* Write data of a certain length to the LA8's FTDI device.
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*
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* @param la8 The LA8 struct containing private per-device-instance data.
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* @param buf The buffer containing the data to write.
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* @param size The number of bytes to write.
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* @return The number of bytes written, or a negative value upon errors.
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*/
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static int la8_write(struct la8 *la8, uint8_t *buf, int size)
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{
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int bytes_written;
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if (!la8) {
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g_warning("la8: %s: la8 was NULL", __func__);
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return SR_ERR;
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}
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if (!la8->ftdic) {
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g_warning("la8: %s: la8->ftdic was NULL", __func__);
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return SR_ERR;
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}
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if (!buf) {
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g_warning("la8: %s: buf was NULL", __func__);
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return SR_ERR;
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}
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if (size < 0) {
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g_warning("la8: %s: size was < 0", __func__);
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return SR_ERR;
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}
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bytes_written = ftdi_write_data(la8->ftdic, buf, size);
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if (bytes_written < 0) {
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g_warning("la8: %s: ftdi_write_data: (%d) %s", __func__,
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bytes_written, ftdi_get_error_string(la8->ftdic));
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(void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */
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} else if (bytes_written != size) {
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g_warning("la8: %s: bytes to write: %d, bytes written: %d",
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__func__, size, bytes_written);
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(void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */
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}
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return bytes_written;
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}
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/**
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* Read a certain amount of bytes from the LA8's FTDI device.
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*
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* @param la8 The LA8 struct containing private per-device-instance data.
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* @param buf The buffer where the received data will be stored.
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* @param size The number of bytes to read.
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* @return The number of bytes read, or a negative value upon errors.
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*/
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static int la8_read(struct la8 *la8, uint8_t *buf, int size)
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{
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int bytes_read;
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if (!la8) {
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g_warning("la8: %s: la8 was NULL", __func__);
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return SR_ERR;
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}
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if (!la8->ftdic) {
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g_warning("la8: %s: la8->ftdic was NULL", __func__);
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return SR_ERR;
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}
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if (!buf) {
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g_warning("la8: %s: buf was NULL", __func__);
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return SR_ERR;
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}
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if (size <= 0) {
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g_warning("la8: %s: size was <= 0", __func__);
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return SR_ERR;
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}
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bytes_read = ftdi_read_data(la8->ftdic, buf, size);
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if (bytes_read < 0) {
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g_warning("la8: %s: ftdi_read_data: (%d) %s", __func__,
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bytes_read, ftdi_get_error_string(la8->ftdic));
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} else if (bytes_read != size) {
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// g_warning("la8: %s: bytes to read: %d, bytes read: %d",
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// __func__, size, bytes_read);
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}
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return bytes_read;
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}
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static int la8_close(struct la8 *la8)
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{
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int ret;
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if (!la8) {
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g_warning("la8: %s: la8 was NULL", __func__);
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return SR_ERR;
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}
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if (!la8->ftdic) {
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g_warning("la8: %s: la8->ftdic was NULL", __func__);
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return SR_ERR;
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}
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if ((ret = ftdi_usb_close(la8->ftdic)) < 0) {
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g_warning("la8: %s: ftdi_usb_close: (%d) %s",
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__func__, ret, ftdi_get_error_string(la8->ftdic));
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}
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return ret;
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}
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/**
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* Close the ChronoVu LA8 USB port and reset the LA8 sequencer logic.
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*
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* @param la8 The LA8 struct containing private per-device-instance data.
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* @return SR_OK upon success, SR_ERR upon failure.
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*/
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static int la8_close_usb_reset_sequencer(struct la8 *la8)
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{
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/* Magic sequence of bytes for resetting the LA8 sequencer logic. */
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uint8_t buf[8] = {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01};
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int ret;
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g_debug("la8: entering %s", __func__);
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if (!la8) {
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g_warning("la8: %s: la8 was NULL", __func__);
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return SR_ERR;
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}
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if (!la8->ftdic) {
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g_warning("la8: %s: la8->ftdic was NULL", __func__);
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return SR_ERR;
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}
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if (la8->ftdic->usb_dev) {
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/* Reset the LA8 sequencer logic, then wait 100ms. */
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g_debug("la8: resetting sequencer logic");
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(void) la8_write(la8, buf, 8); /* Ignore errors. */
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g_usleep(100 * 1000);
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/* Purge FTDI buffers, then reset and close the FTDI device. */
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g_debug("la8: purging buffers, resetting+closing FTDI device");
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/* Log errors, but ignore them (i.e., don't abort). */
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if ((ret = ftdi_usb_purge_buffers(la8->ftdic)) < 0)
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g_warning("la8: %s: ftdi_usb_purge_buffers: (%d) %s",
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__func__, ret, ftdi_get_error_string(la8->ftdic));
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if ((ret = ftdi_usb_reset(la8->ftdic)) < 0)
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g_warning("la8: %s: ftdi_usb_reset: (%d) %s", __func__,
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ret, ftdi_get_error_string(la8->ftdic));
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if ((ret = ftdi_usb_close(la8->ftdic)) < 0)
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g_warning("la8: %s: ftdi_usb_close: (%d) %s", __func__,
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ret, ftdi_get_error_string(la8->ftdic));
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} else {
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g_debug("la8: %s: usb_dev was NULL, nothing to do", __func__);
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}
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ftdi_free(la8->ftdic); /* Returns void. */
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la8->ftdic = NULL;
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return SR_OK;
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}
|
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|
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/**
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* Reset the ChronoVu LA8.
|
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*
|
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* The LA8 must be reset after a failed read/write operation or upon timeouts.
|
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*
|
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* @param la8 The LA8 struct containing private per-device-instance data.
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* @return SR_OK upon success, SR_ERR upon failure.
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*/
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static int la8_reset(struct la8 *la8)
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{
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uint8_t buf[4096];
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time_t done, now;
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int bytes_read;
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if (!la8) {
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g_warning("la8: %s: la8 was NULL", __func__);
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return SR_ERR;
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}
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if (!la8->ftdic) {
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g_warning("la8: %s: la8->ftdic was NULL", __func__);
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return SR_ERR;
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}
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g_debug("la8: resetting the device");
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/*
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* Purge pending read data from the FTDI hardware FIFO until
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* no more data is left, or a timeout occurs (after 20s).
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*/
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done = 20 + time(NULL);
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do {
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/* TODO: Ignore errors? Check for < 0 at least! */
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bytes_read = la8_read(la8, (uint8_t *)&buf, 4096);
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now = time(NULL);
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} while ((done > now) && (bytes_read > 0));
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/* Reset the LA8 sequencer logic and close the USB port. */
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(void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */
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g_debug("la8: device reset finished");
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return SR_OK;
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}
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static int hw_init(const char *deviceinfo)
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{
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int ret;
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struct sr_device_instance *sdi;
|
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struct la8 *la8;
|
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|
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g_debug("la8: entering %s", __func__);
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/* Avoid compiler errors. */
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deviceinfo = deviceinfo;
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/* Allocate memory for our private driver context. */
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if (!(la8 = malloc(sizeof(struct la8)))) {
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g_warning("la8: %s: struct la8 malloc failed", __func__);
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ret = SR_ERR_MALLOC;
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goto err_free_nothing;
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}
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/* Set some sane defaults. */
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la8->ftdic = NULL;
|
||||
la8->cur_samplerate = SR_MHZ(100); /* 100MHz == max. samplerate */
|
||||
la8->limit_msec = 0;
|
||||
la8->limit_samples = 0;
|
||||
la8->num_probes = NUM_PROBES;
|
||||
la8->session_id = NULL;
|
||||
la8->mangled_buf = NULL;
|
||||
la8->final_buf = NULL;
|
||||
la8->trigger_pattern = 0x00; /* Value irrelevant, see trigger_mask. */
|
||||
la8->trigger_mask = 0x00; /* All probes are "don't care". */
|
||||
la8->trigger_timeout = 10; /* Default to 10s trigger timeout. */
|
||||
la8->done = 0;
|
||||
la8->block_counter = 0;
|
||||
la8->divcount = 0; /* 10ns sample period == 100MHz samplerate */
|
||||
|
||||
/* Allocate memory for the raw (mangled) data from the LA8. */
|
||||
if (!(la8->mangled_buf = malloc(SDRAM_SIZE))) {
|
||||
g_warning("la8: %s: mangled_buf malloc failed", __func__);
|
||||
ret = SR_ERR_MALLOC;
|
||||
goto err_free_la8;
|
||||
}
|
||||
|
||||
/* Allocate memory where we'll store the de-mangled data. */
|
||||
if (!(la8->final_buf = malloc(SDRAM_SIZE))) {
|
||||
g_warning("la8: %s: final_buf malloc failed", __func__);
|
||||
ret = SR_ERR_MALLOC;
|
||||
goto err_free_mangled_buf;
|
||||
}
|
||||
|
||||
/* Allocate memory for the FTDI context (ftdic) and initialize it. */
|
||||
if (!(la8->ftdic = ftdi_new())) {
|
||||
g_warning("la8: %s: ftdi_new failed", __func__);
|
||||
ret = SR_ERR; /* TODO: More specific error? */
|
||||
goto err_free_final_buf;
|
||||
}
|
||||
|
||||
/* Check for the device and temporarily open it. */
|
||||
if ((ret = ftdi_usb_open_desc(la8->ftdic, USB_VENDOR_ID,
|
||||
USB_PRODUCT_ID, USB_DESCRIPTION, NULL)) < 0) {
|
||||
g_warning("la8: %s: ftdi_usb_open_desc: (%d) %s",
|
||||
__func__, ret, ftdi_get_error_string(la8->ftdic));
|
||||
(void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */
|
||||
ret = SR_ERR; /* TODO: More specific error? */
|
||||
goto err_free_ftdic;
|
||||
}
|
||||
g_debug("la8: found device");
|
||||
|
||||
/* Register the device with libsigrok. */
|
||||
sdi = sr_device_instance_new(0, SR_ST_INITIALIZING,
|
||||
USB_VENDOR_NAME, USB_MODEL_NAME, USB_MODEL_VERSION);
|
||||
if (!sdi) {
|
||||
g_warning("la8: %s: sr_device_instance_new failed", __func__);
|
||||
ret = SR_ERR; /* TODO: More specific error? */
|
||||
goto err_close_ftdic;
|
||||
}
|
||||
|
||||
sdi->priv = la8;
|
||||
|
||||
device_instances = g_slist_append(device_instances, sdi);
|
||||
|
||||
g_debug("la8: %s finished successfully", __func__);
|
||||
|
||||
/* Close device. We'll reopen it again when we need it. */
|
||||
(void) la8_close(la8); /* Log, but ignore errors. */
|
||||
|
||||
// return SR_OK; /* TODO */
|
||||
return 1;
|
||||
|
||||
err_close_ftdic:
|
||||
(void) la8_close(la8); /* Log, but ignore errors. */
|
||||
err_free_ftdic:
|
||||
free(la8->ftdic);
|
||||
err_free_final_buf:
|
||||
free(la8->final_buf);
|
||||
err_free_mangled_buf:
|
||||
free(la8->mangled_buf);
|
||||
err_free_la8:
|
||||
free(la8);
|
||||
err_free_nothing:
|
||||
// return ret; /* TODO */
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int hw_opendev(int device_index)
|
||||
{
|
||||
int ret;
|
||||
struct sr_device_instance *sdi;
|
||||
struct la8 *la8;
|
||||
|
||||
if (!(sdi = sr_get_device_instance(device_instances, device_index))) {
|
||||
g_warning("la8: %s: sdi was NULL", __func__);
|
||||
return SR_ERR;
|
||||
}
|
||||
|
||||
if (!(la8 = sdi->priv)) {
|
||||
g_warning("la8: %s: sdi->priv was NULL", __func__);
|
||||
return SR_ERR;
|
||||
}
|
||||
|
||||
g_debug("la8: opening device");
|
||||
|
||||
/* Open the device. */
|
||||
if ((ret = ftdi_usb_open_desc(la8->ftdic, USB_VENDOR_ID,
|
||||
USB_PRODUCT_ID, USB_DESCRIPTION, NULL)) < 0) {
|
||||
g_warning("la8: %s: ftdi_usb_open_desc: (%d) %s",
|
||||
__func__, ret, ftdi_get_error_string(la8->ftdic));
|
||||
(void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */
|
||||
return SR_ERR;
|
||||
}
|
||||
g_debug("la8: device opened successfully");
|
||||
|
||||
/* Purge RX/TX buffers in the FTDI chip. */
|
||||
if ((ret = ftdi_usb_purge_buffers(la8->ftdic)) < 0) {
|
||||
g_warning("la8: %s: ftdi_usb_purge_buffers: (%d) %s",
|
||||
__func__, ret, ftdi_get_error_string(la8->ftdic));
|
||||
(void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */
|
||||
goto err_opendev_close_ftdic;
|
||||
}
|
||||
g_debug("la8: FTDI buffers purged successfully");
|
||||
|
||||
/* Enable flow control in the FTDI chip. */
|
||||
if ((ret = ftdi_setflowctrl(la8->ftdic, SIO_RTS_CTS_HS)) < 0) {
|
||||
g_warning("la8: %s: ftdi_setflowcontrol: (%d) %s",
|
||||
__func__, ret, ftdi_get_error_string(la8->ftdic));
|
||||
(void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */
|
||||
goto err_opendev_close_ftdic;
|
||||
}
|
||||
g_debug("la8: FTDI flow control enabled successfully");
|
||||
|
||||
/* Wait 100ms. */
|
||||
g_usleep(100 * 1000);
|
||||
|
||||
sdi->status = SR_ST_ACTIVE;
|
||||
|
||||
return SR_OK;
|
||||
|
||||
err_opendev_close_ftdic:
|
||||
(void) la8_close(la8); /* Log, but ignore errors. */
|
||||
return SR_ERR;
|
||||
}
|
||||
|
||||
static int set_samplerate(struct sr_device_instance *sdi, uint64_t samplerate)
|
||||
{
|
||||
struct la8 *la8;
|
||||
|
||||
if (!sdi) {
|
||||
g_warning("la8: %s: sdi was NULL", __func__);
|
||||
return SR_ERR;
|
||||
}
|
||||
|
||||
if (!(la8 = sdi->priv)) {
|
||||
g_warning("la8: %s: sdi->priv was NULL", __func__);
|
||||
return SR_ERR;
|
||||
}
|
||||
|
||||
g_debug("la8: setting samplerate");
|
||||
|
||||
fill_supported_samplerates_if_needed();
|
||||
|
||||
/* Check if this is a samplerate supported by the hardware. */
|
||||
if (!is_valid_samplerate(samplerate))
|
||||
return SR_ERR;
|
||||
|
||||
/* Set the new samplerate. */
|
||||
la8->cur_samplerate = samplerate;
|
||||
|
||||
g_debug("la8: samplerate set to %" PRIu64 "Hz", la8->cur_samplerate);
|
||||
|
||||
return SR_OK;
|
||||
}
|
||||
|
||||
static void hw_closedev(int device_index)
|
||||
{
|
||||
struct sr_device_instance *sdi;
|
||||
struct la8 *la8;
|
||||
|
||||
if (!(sdi = sr_get_device_instance(device_instances, device_index))) {
|
||||
g_warning("la8: %s: sdi was NULL", __func__);
|
||||
return;
|
||||
}
|
||||
|
||||
if (!(la8 = sdi->priv)) {
|
||||
g_warning("la8: %s: sdi->priv was NULL", __func__);
|
||||
return;
|
||||
}
|
||||
|
||||
g_debug("la8: closing device");
|
||||
|
||||
if (sdi->status == SR_ST_ACTIVE) {
|
||||
g_debug("la8: %s: status ACTIVE, closing device", __func__);
|
||||
/* TODO: Handle or ignore errors here? */
|
||||
(void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */
|
||||
} else {
|
||||
g_debug("la8: %s: status not ACTIVE, nothing to do", __func__);
|
||||
}
|
||||
|
||||
sdi->status = SR_ST_INACTIVE;
|
||||
}
|
||||
|
||||
static void hw_cleanup(void)
|
||||
{
|
||||
GSList *l;
|
||||
struct sr_device_instance *sdi;
|
||||
|
||||
g_debug("la8: entering %s", __func__);
|
||||
|
||||
/* Properly close all devices. */
|
||||
for (l = device_instances; l; l = l->next) {
|
||||
if ((sdi = l->data) == NULL) {
|
||||
g_warning("la8: %s: sdi was NULL", __func__);
|
||||
continue;
|
||||
}
|
||||
if (sdi->priv != NULL)
|
||||
free(sdi->priv);
|
||||
else
|
||||
g_warning("la8: %s: sdi->priv was NULL", __func__);
|
||||
sr_device_instance_free(sdi); /* Returns void. */
|
||||
}
|
||||
g_slist_free(device_instances); /* Returns void. */
|
||||
device_instances = NULL;
|
||||
}
|
||||
|
||||
static void *hw_get_device_info(int device_index, int device_info_id)
|
||||
{
|
||||
struct sr_device_instance *sdi;
|
||||
struct la8 *la8;
|
||||
void *info;
|
||||
|
||||
g_debug("la8: entering %s", __func__);
|
||||
|
||||
if (!(sdi = sr_get_device_instance(device_instances, device_index))) {
|
||||
g_warning("la8: %s: sdi was NULL", __func__);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (!(la8 = sdi->priv)) {
|
||||
g_warning("la8: %s: sdi->priv was NULL", __func__);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
switch (device_info_id) {
|
||||
case SR_DI_INSTANCE:
|
||||
info = sdi;
|
||||
break;
|
||||
case SR_DI_NUM_PROBES:
|
||||
info = GINT_TO_POINTER(NUM_PROBES);
|
||||
break;
|
||||
case SR_DI_SAMPLERATES:
|
||||
fill_supported_samplerates_if_needed();
|
||||
info = &samplerates;
|
||||
break;
|
||||
case SR_DI_TRIGGER_TYPES:
|
||||
info = (char *)TRIGGER_TYPES;
|
||||
break;
|
||||
case SR_DI_CUR_SAMPLERATE:
|
||||
info = &la8->cur_samplerate;
|
||||
break;
|
||||
default:
|
||||
/* Unknown device info ID, return NULL. */
|
||||
g_warning("la8: %s: Unknown device info ID", __func__);
|
||||
info = NULL;
|
||||
break;
|
||||
}
|
||||
|
||||
return info;
|
||||
}
|
||||
|
||||
static int hw_get_status(int device_index)
|
||||
{
|
||||
struct sr_device_instance *sdi;
|
||||
|
||||
if (!(sdi = sr_get_device_instance(device_instances, device_index))) {
|
||||
g_warning("la8: %s: sdi was NULL, device not found", __func__);
|
||||
return SR_ST_NOT_FOUND;
|
||||
}
|
||||
|
||||
g_debug("la8: %s: returning status %d", __func__, sdi->status);
|
||||
|
||||
return sdi->status;
|
||||
}
|
||||
|
||||
static int *hw_get_capabilities(void)
|
||||
{
|
||||
g_debug("la8: entering %s", __func__);
|
||||
|
||||
return capabilities;
|
||||
}
|
||||
|
||||
static int hw_set_configuration(int device_index, int capability, void *value)
|
||||
{
|
||||
struct sr_device_instance *sdi;
|
||||
struct la8 *la8;
|
||||
|
||||
g_debug("la8: entering %s", __func__);
|
||||
|
||||
if (!(sdi = sr_get_device_instance(device_instances, device_index))) {
|
||||
g_warning("la8: %s: sdi was NULL", __func__);
|
||||
return SR_ERR;
|
||||
}
|
||||
|
||||
if (!(la8 = sdi->priv)) {
|
||||
g_warning("la8: %s: sdi->priv was NULL", __func__);
|
||||
return SR_ERR;
|
||||
}
|
||||
|
||||
switch (capability) {
|
||||
case SR_HWCAP_SAMPLERATE:
|
||||
if (set_samplerate(sdi, *(uint64_t *)value) == SR_ERR)
|
||||
return SR_ERR;
|
||||
g_debug("la8: SAMPLERATE = %" PRIu64, la8->cur_samplerate);
|
||||
break;
|
||||
case SR_HWCAP_PROBECONFIG:
|
||||
/* Nothing to do, but this entry must exist. Fix this. */
|
||||
/* TODO? */
|
||||
g_debug("la8: %s: SR_HWCAP_PROBECONFIG called", __func__);
|
||||
return SR_OK;
|
||||
break;
|
||||
case SR_HWCAP_LIMIT_MSEC:
|
||||
if (*(uint64_t *)value == 0) {
|
||||
g_warning("la8: %s: LIMIT_MSEC can't be 0", __func__);
|
||||
return SR_ERR;
|
||||
}
|
||||
la8->limit_msec = *(uint64_t *)value;
|
||||
g_debug("la8: LIMIT_MSEC = %" PRIu64, la8->limit_msec);
|
||||
break;
|
||||
case SR_HWCAP_LIMIT_SAMPLES:
|
||||
if (*(uint64_t *)value < MIN_NUM_SAMPLES) {
|
||||
g_warning("la8: %s: LIMIT_SAMPLES too small", __func__);
|
||||
return SR_ERR;
|
||||
}
|
||||
la8->limit_samples = *(uint64_t *)value;
|
||||
g_debug("la8: LIMIT_SAMPLES = %" PRIu64, la8->limit_samples);
|
||||
break;
|
||||
default:
|
||||
/* Unknown capability, return SR_ERR. */
|
||||
g_warning("la8: %s: Unknown capability", __func__);
|
||||
return SR_ERR;
|
||||
break;
|
||||
}
|
||||
|
||||
return SR_OK;
|
||||
}
|
||||
|
||||
/**
|
||||
* Get a block of 4096 bytes of data from the LA8.
|
||||
*
|
||||
* @param la8 The LA8 struct containing private per-device-instance data.
|
||||
* @return SR_OK upon success, or SR_ERR upon errors.
|
||||
*/
|
||||
static int la8_read_block(struct la8 *la8)
|
||||
{
|
||||
int i, byte_offset, m, mi, p, index, bytes_read;
|
||||
time_t now;
|
||||
|
||||
if (!la8) {
|
||||
g_warning("la8: %s: la8 was NULL", __func__);
|
||||
return SR_ERR;
|
||||
}
|
||||
|
||||
if (!la8->ftdic) {
|
||||
g_warning("la8: %s: la8->ftdic was NULL", __func__);
|
||||
return SR_ERR;
|
||||
}
|
||||
|
||||
// g_debug("la8: %s: reading block %d", __func__, la8->block_counter);
|
||||
|
||||
bytes_read = la8_read(la8, la8->mangled_buf, 4096);
|
||||
|
||||
/* If first block read got 0 bytes, retry until success or timeout. */
|
||||
if ((bytes_read == 0) && (la8->block_counter == 0)) {
|
||||
do {
|
||||
// g_debug("la8: %s: reading block 0 again", __func__);
|
||||
bytes_read = la8_read(la8, la8->mangled_buf, 4096);
|
||||
/* TODO: How to handle read errors here? */
|
||||
now = time(NULL);
|
||||
} while ((la8->done > now) && (bytes_read == 0));
|
||||
}
|
||||
|
||||
/* Check if block read was successful or a timeout occured. */
|
||||
if (bytes_read != 4096) {
|
||||
g_warning("la8: %s: trigger timed out", __func__);
|
||||
(void) la8_reset(la8); /* Ignore errors. */
|
||||
return SR_ERR;
|
||||
}
|
||||
|
||||
/* De-mangle the data. */
|
||||
// g_debug("la8: de-mangling samples of block %d", la8->block_counter);
|
||||
byte_offset = la8->block_counter * 4096;
|
||||
m = byte_offset / (1024 * 1024);
|
||||
mi = m * (1024 * 1024);
|
||||
for (i = 0; i < 4096; i++) {
|
||||
p = i & (1 << 0);
|
||||
index = m * 2 + (((byte_offset + i) - mi) / 2) * 16;
|
||||
index += (la8->divcount == 0) ? p : (1 - p);
|
||||
la8->final_buf[index] = la8->mangled_buf[i];
|
||||
}
|
||||
|
||||
return SR_OK;
|
||||
}
|
||||
|
||||
static int receive_data(int fd, int revents, void *user_data)
|
||||
{
|
||||
int i, ret;
|
||||
struct sr_device_instance *sdi;
|
||||
struct sr_datafeed_packet packet;
|
||||
struct la8 *la8;
|
||||
|
||||
/* Avoid compiler errors. */
|
||||
fd = fd;
|
||||
revents = revents;
|
||||
|
||||
if (!(sdi = user_data)) {
|
||||
g_warning("la8: %s: user_data was NULL", __func__);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
if (!(la8 = sdi->priv)) {
|
||||
g_warning("la8: %s: sdi->priv was NULL", __func__);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
/* Get one block of data (4096 bytes). */
|
||||
if ((ret = la8_read_block(la8)) < 0) {
|
||||
g_warning("la8: %s: la8_read_block error: %d", __func__, ret);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
/* We need to get exactly 2048 blocks (i.e. 8MB) of data. */
|
||||
if (la8->block_counter != 2047) {
|
||||
la8->block_counter++;
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
g_debug("la8: sampling finished, sending data to session bus now");
|
||||
|
||||
/* All data was received and demangled, send it to the session bus. */
|
||||
for (i = 0; i < 2048; i++) {
|
||||
/* Send a 4096 byte SR_DF_LOGIC packet to the session bus. */
|
||||
// g_debug("la8: %s: sending SR_DF_LOGIC packet", __func__);
|
||||
packet.type = SR_DF_LOGIC;
|
||||
packet.length = 4096;
|
||||
packet.unitsize = 1;
|
||||
packet.payload = la8->final_buf + (i * 4096);
|
||||
sr_session_bus(la8->session_id, &packet);
|
||||
}
|
||||
|
||||
hw_stop_acquisition(sdi->index, user_data);
|
||||
|
||||
// return FALSE; /* FIXME? */
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static int hw_start_acquisition(int device_index, gpointer session_device_id)
|
||||
{
|
||||
struct sr_device_instance *sdi;
|
||||
struct la8 *la8;
|
||||
struct sr_datafeed_packet packet;
|
||||
struct sr_datafeed_header header;
|
||||
uint8_t buf[4];
|
||||
int bytes_written;
|
||||
|
||||
g_debug("la8: entering %s", __func__);
|
||||
|
||||
if (!(sdi = sr_get_device_instance(device_instances, device_index))) {
|
||||
g_warning("la8: %s: sdi was NULL", __func__);
|
||||
return SR_ERR;
|
||||
}
|
||||
|
||||
if (!(la8 = sdi->priv)) {
|
||||
g_warning("la8: %s: sdi->priv was NULL", __func__);
|
||||
return SR_ERR;
|
||||
}
|
||||
|
||||
if (!la8->ftdic) {
|
||||
g_warning("la8: %s: la8->ftdic was NULL", __func__);
|
||||
return SR_ERR;
|
||||
}
|
||||
|
||||
la8->divcount = samplerate_to_divcount(la8->cur_samplerate);
|
||||
if (la8->divcount == 0xff) {
|
||||
g_warning("la8: %s: invalid divcount/samplerate", __func__);
|
||||
return SR_ERR;
|
||||
}
|
||||
|
||||
/* Fill acquisition parameters into buf[]. */
|
||||
buf[0] = la8->divcount;
|
||||
buf[1] = 0xff; /* This byte must always be 0xff. */
|
||||
buf[2] = la8->trigger_pattern;
|
||||
buf[3] = la8->trigger_mask;
|
||||
|
||||
/* Start acquisition. */
|
||||
bytes_written = la8_write(la8, buf, 4);
|
||||
|
||||
if (bytes_written < 0) {
|
||||
g_warning("la8: acquisition failed to start");
|
||||
return SR_ERR;
|
||||
} else if (bytes_written != 4) {
|
||||
g_warning("la8: acquisition failed to start");
|
||||
return SR_ERR; /* TODO: Other error and return code? */
|
||||
}
|
||||
|
||||
g_debug("la8: acquisition started successfully");
|
||||
|
||||
la8->session_id = session_device_id;
|
||||
|
||||
/* Send header packet to the session bus. */
|
||||
g_debug("la8: %s: sending SR_DF_HEADER", __func__);
|
||||
packet.type = SR_DF_HEADER;
|
||||
packet.length = sizeof(struct sr_datafeed_header);
|
||||
packet.unitsize = 0;
|
||||
packet.payload = &header;
|
||||
header.feed_version = 1;
|
||||
gettimeofday(&header.starttime, NULL);
|
||||
header.samplerate = la8->cur_samplerate;
|
||||
header.protocol_id = SR_PROTO_RAW;
|
||||
header.num_logic_probes = la8->num_probes;
|
||||
header.num_analog_probes = 0;
|
||||
sr_session_bus(session_device_id, &packet);
|
||||
|
||||
/* Time when we should be done (for detecting trigger timeouts). */
|
||||
la8->done = (la8->divcount + 1) * 0.08388608 + time(NULL)
|
||||
+ la8->trigger_timeout;
|
||||
la8->block_counter = 0;
|
||||
|
||||
/* Hook up a dummy handler to receive data from the LA8. */
|
||||
sr_source_add(-1, G_IO_IN, 0, receive_data, sdi);
|
||||
|
||||
return SR_OK;
|
||||
}
|
||||
|
||||
static void hw_stop_acquisition(int device_index, gpointer session_device_id)
|
||||
{
|
||||
struct sr_device_instance *sdi;
|
||||
struct la8 *la8;
|
||||
struct sr_datafeed_packet packet;
|
||||
|
||||
g_debug("la8: stopping acquisition");
|
||||
|
||||
if (!(sdi = sr_get_device_instance(device_instances, device_index))) {
|
||||
g_warning("la8: %s: sdi was NULL", __func__);
|
||||
return;
|
||||
}
|
||||
|
||||
if (!(la8 = sdi->priv)) {
|
||||
g_warning("la8: %s: sdi->priv was NULL", __func__);
|
||||
return;
|
||||
}
|
||||
|
||||
/* Reset the LA8 sequencer and close the device. */
|
||||
(void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */
|
||||
|
||||
/* Send end packet to the session bus. */
|
||||
g_debug("la8: %s: sending SR_DF_END", __func__);
|
||||
packet.type = SR_DF_END;
|
||||
packet.length = 0;
|
||||
packet.unitsize = 0;
|
||||
packet.payload = NULL;
|
||||
sr_session_bus(session_device_id, &packet);
|
||||
}
|
||||
|
||||
struct sr_device_plugin chronovu_la8_plugin_info = {
|
||||
.name = "chronovu-la8",
|
||||
.longname = "ChronoVu LA8",
|
||||
.api_version = 1,
|
||||
.init = hw_init,
|
||||
.cleanup = hw_cleanup,
|
||||
.open = hw_opendev,
|
||||
.close = hw_closedev,
|
||||
.get_device_info = hw_get_device_info,
|
||||
.get_status = hw_get_status,
|
||||
.get_capabilities = hw_get_capabilities,
|
||||
.set_configuration = hw_set_configuration,
|
||||
.start_acquisition = hw_start_acquisition,
|
||||
.stop_acquisition = hw_stop_acquisition,
|
||||
};
|
||||
|
|
@ -56,6 +56,9 @@ extern struct sr_device_plugin zeroplus_logic_cube_plugin_info;
|
|||
#ifdef HAVE_LA_ASIX_SIGMA
|
||||
extern struct sr_device_plugin asix_sigma_plugin_info;
|
||||
#endif
|
||||
#ifdef HAVE_LA_CHRONOVU_LA8
|
||||
extern struct device_plugin chronovu_la8_plugin_info;
|
||||
#endif
|
||||
#ifdef HAVE_LA_LINK_MSO19
|
||||
extern struct sr_device_plugin link_mso19_plugin_info;
|
||||
#endif
|
||||
|
|
@ -84,6 +87,9 @@ int load_hwplugins(void)
|
|||
#ifdef HAVE_LA_ASIX_SIGMA
|
||||
plugins = g_slist_append(plugins, (gpointer *)&asix_sigma_plugin_info);
|
||||
#endif
|
||||
#ifdef HAVE_LA_CHRONOVU_LA8
|
||||
plugins = g_slist_append(plugins, (gpointer *)&chronovu_la8_plugin_info);
|
||||
#endif
|
||||
#ifdef HAVE_LA_LINK_MSO19
|
||||
plugins = g_slist_append(plugins, (gpointer *)&link_mso19_plugin_info);
|
||||
#endif
|
||||
|
|
|
|||
Loading…
Reference in New Issue