X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=input%2Fchronovu_la8.c;h=97eac15040850d0fa4977b1c461a2c916471a7bf;hb=HEAD;hp=dcedcf8cf11592641ceaef92e875cdeb0a4c2aa0;hpb=3f239f0803b9fbc073dd7abe9fc7b2a0c606fbb6;p=libsigrok.git diff --git a/input/chronovu_la8.c b/input/chronovu_la8.c deleted file mode 100644 index dcedcf8c..00000000 --- a/input/chronovu_la8.c +++ /dev/null @@ -1,206 +0,0 @@ -/* - * This file is part of the libsigrok project. - * - * Copyright (C) 2011 Uwe Hermann - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include -#include -#include -#include -#include "libsigrok.h" -#include "libsigrok-internal.h" - -#define LOG_PREFIX "input/chronovu-la8" - -#define NUM_PACKETS 2048 -#define PACKET_SIZE 4096 -#define DEFAULT_NUM_CHANNELS 8 - -/** - * Convert the LA8 'divcount' value to the respective samplerate (in Hz). - * - * LA8 hardware: sample period = (divcount + 1) * 10ns. - * Min. value for divcount: 0x00 (10ns sample period, 100MHz samplerate). - * Max. value for divcount: 0xfe (2550ns sample period, 392.15kHz samplerate). - * - * @param divcount The divcount value as needed by the hardware. - * - * @return The samplerate in Hz, or 0xffffffffffffffff upon errors. - */ -static uint64_t divcount_to_samplerate(uint8_t divcount) -{ - if (divcount == 0xff) - return 0xffffffffffffffffULL; - - return SR_MHZ(100) / (divcount + 1); -} - -static int format_match(const char *filename) -{ - struct stat stat_buf; - int ret; - - if (!filename) { - sr_err("%s: filename was NULL", __func__); - // return SR_ERR; /* FIXME */ - return FALSE; - } - - if (!g_file_test(filename, G_FILE_TEST_EXISTS)) { - sr_err("%s: input file '%s' does not exist", - __func__, filename); - // return SR_ERR; /* FIXME */ - return FALSE; - } - - if (!g_file_test(filename, G_FILE_TEST_IS_REGULAR)) { - sr_err("%s: input file '%s' not a regular file", - __func__, filename); - // return SR_ERR; /* FIXME */ - return FALSE; - } - - /* Only accept files of length 8MB + 5 bytes. */ - ret = stat(filename, &stat_buf); - if (ret != 0) { - sr_err("%s: Error getting file size of '%s'", - __func__, filename); - return FALSE; - } - if (stat_buf.st_size != (8 * 1024 * 1024 + 5)) { - sr_dbg("%s: File size must be exactly 8388613 bytes (" - "it actually is %d bytes in size), so this is not a " - "ChronoVu LA8 file.", __func__, stat_buf.st_size); - return FALSE; - } - - /* TODO: Check for divcount != 0xff. */ - - return TRUE; -} - -static int init(struct sr_input *in, const char *filename) -{ - struct sr_channel *ch; - int num_channels, i; - char name[SR_MAX_CHANNELNAME_LEN + 1]; - char *param; - - (void)filename; - - num_channels = DEFAULT_NUM_CHANNELS; - - if (in->param) { - param = g_hash_table_lookup(in->param, "numchannels"); - if (param) { - num_channels = strtoul(param, NULL, 10); - if (num_channels < 1) { - sr_err("%s: strtoul failed", __func__); - return SR_ERR; - } - } - } - - /* Create a virtual device. */ - in->sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, NULL, NULL, NULL); - - for (i = 0; i < num_channels; i++) { - snprintf(name, SR_MAX_CHANNELNAME_LEN, "%d", i); - /* TODO: Check return value. */ - if (!(ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE, name))) - return SR_ERR; - in->sdi->channels = g_slist_append(in->sdi->channels, ch); - } - - return SR_OK; -} - -static int loadfile(struct sr_input *in, const char *filename) -{ - struct sr_datafeed_packet packet; - struct sr_datafeed_meta meta; - struct sr_datafeed_logic logic; - struct sr_config *src; - uint8_t buf[PACKET_SIZE], divcount; - int i, fd, size, num_channels; - uint64_t samplerate; - - /* TODO: Use glib functions! GIOChannel, g_fopen, etc. */ - if ((fd = open(filename, O_RDONLY)) == -1) { - sr_err("%s: file open failed", __func__); - return SR_ERR; - } - - num_channels = g_slist_length(in->sdi->channels); - - /* Seek to the end of the file, and read the divcount byte. */ - divcount = 0x00; /* TODO: Don't hardcode! */ - - /* Convert the divcount value to a samplerate. */ - samplerate = divcount_to_samplerate(divcount); - if (samplerate == 0xffffffffffffffffULL) { - close(fd); /* FIXME */ - return SR_ERR; - } - sr_dbg("%s: samplerate is %" PRIu64, __func__, samplerate); - - /* Send header packet to the session bus. */ - std_session_send_df_header(in->sdi, LOG_PREFIX); - - /* Send metadata about the SR_DF_LOGIC packets to come. */ - packet.type = SR_DF_META; - packet.payload = &meta; - src = sr_config_new(SR_CONF_SAMPLERATE, g_variant_new_uint64(samplerate)); - meta.config = g_slist_append(NULL, src); - sr_session_send(in->sdi, &packet); - sr_config_free(src); - - /* TODO: Handle trigger point. */ - - /* Send data packets to the session bus. */ - sr_dbg("%s: sending SR_DF_LOGIC data packets", __func__); - packet.type = SR_DF_LOGIC; - packet.payload = &logic; - logic.unitsize = (num_channels + 7) / 8; - logic.data = buf; - - /* Send 8MB of total data to the session bus in small chunks. */ - for (i = 0; i < NUM_PACKETS; i++) { - /* TODO: Handle errors, handle incomplete reads. */ - size = read(fd, buf, PACKET_SIZE); - logic.length = size; - sr_session_send(in->sdi, &packet); - } - close(fd); /* FIXME */ - - /* Send end packet to the session bus. */ - sr_dbg("%s: sending SR_DF_END", __func__); - packet.type = SR_DF_END; - packet.payload = NULL; - sr_session_send(in->sdi, &packet); - - return SR_OK; -} - -SR_PRIV struct sr_input_format input_chronovu_la8 = { - .id = "chronovu-la8", - .description = "ChronoVu LA8", - .format_match = format_match, - .init = init, - .loadfile = loadfile, -};