X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=input%2Fchronovu_la8.c;h=97eac15040850d0fa4977b1c461a2c916471a7bf;hb=HEAD;hp=146d9da9d581154c2caf029e1c58eaf0d9f1ca24;hpb=8e7f1cfd99a37d21ebe3365067cd21b76e866d1c;p=libsigrok.git diff --git a/input/chronovu_la8.c b/input/chronovu_la8.c deleted file mode 100644 index 146d9da9..00000000 --- a/input/chronovu_la8.c +++ /dev/null @@ -1,215 +0,0 @@ -/* - * This file is part of the sigrok 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" - -/* Message logging helpers with driver-specific prefix string. */ -#define DRIVER_LOG_DOMAIN "input/chronovu-la8: " -#define sr_log(l, s, args...) sr_log(l, DRIVER_LOG_DOMAIN s, ## args) -#define sr_spew(s, args...) sr_spew(DRIVER_LOG_DOMAIN s, ## args) -#define sr_dbg(s, args...) sr_dbg(DRIVER_LOG_DOMAIN s, ## args) -#define sr_info(s, args...) sr_info(DRIVER_LOG_DOMAIN s, ## args) -#define sr_warn(s, args...) sr_warn(DRIVER_LOG_DOMAIN s, ## args) -#define sr_err(s, args...) sr_err(DRIVER_LOG_DOMAIN s, ## args) - -#define NUM_PACKETS 2048 -#define PACKET_SIZE 4096 -#define DEFAULT_NUM_PROBES 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) -{ - struct sr_probe *probe; - int num_probes, i; - char name[SR_MAX_PROBENAME_LEN + 1]; - char *param; - - num_probes = DEFAULT_NUM_PROBES; - - if (in->param) { - param = g_hash_table_lookup(in->param, "numprobes"); - if (param) { - num_probes = strtoul(param, NULL, 10); - if (num_probes < 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_probes; i++) { - snprintf(name, SR_MAX_PROBENAME_LEN, "%d", i); - /* TODO: Check return value. */ - if (!(probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE, name))) - return SR_ERR; - in->sdi->probes = g_slist_append(in->sdi->probes, probe); - } - - return SR_OK; -} - -static int loadfile(struct sr_input *in, const char *filename) -{ - struct sr_datafeed_header header; - struct sr_datafeed_packet packet; - struct sr_datafeed_meta_logic meta; - struct sr_datafeed_logic logic; - uint8_t buf[PACKET_SIZE], divcount; - int i, fd, size, num_probes; - 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_probes = g_slist_length(in->sdi->probes); - - /* 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. */ - sr_dbg("%s: sending SR_DF_HEADER packet", __func__); - packet.type = SR_DF_HEADER; - packet.payload = &header; - header.feed_version = 1; - gettimeofday(&header.starttime, NULL); - sr_session_send(in->sdi, &packet); - - /* Send metadata about the SR_DF_LOGIC packets to come. */ - packet.type = SR_DF_META_LOGIC; - packet.payload = &meta; - meta.samplerate = samplerate; - meta.num_probes = num_probes; - sr_session_send(in->sdi, &packet); - - /* 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_probes + 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, -};