/*
- * This file is part of the sigrok project.
+ * This file is part of the libsigrok project.
*
* Copyright (C) 2011 Uwe Hermann <uwe@hermann-uwe.de>
*
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
-#include "sigrok.h"
-#include "sigrok-internal.h"
+#include <sys/stat.h>
+#include "libsigrok.h"
+#include "libsigrok-internal.h"
+
+#define LOG_PREFIX "input/chronovu-la8"
#define NUM_PACKETS 2048
#define PACKET_SIZE 4096
* 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)
static int format_match(const char *filename)
{
+ struct stat stat_buf;
+ int ret;
+
if (!filename) {
- sr_warn("la8input: %s: filename was NULL", __func__);
+ sr_err("%s: filename was NULL", __func__);
// return SR_ERR; /* FIXME */
return FALSE;
}
if (!g_file_test(filename, G_FILE_TEST_EXISTS)) {
- sr_warn("la8input: %s: input file '%s' does not exist",
- __func__, filename);
+ 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_warn("la8input: %s: input file '%s' not a regular file",
- __func__, filename);
+ sr_err("%s: input file '%s' not a regular file",
+ __func__, filename);
// return SR_ERR; /* FIXME */
return FALSE;
}
- /* TODO: Only accept files of length 8MB + 5 bytes. */
+ /* 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)
+static int init(struct sr_input *in, const char *filename)
{
- int num_probes, i;
+ struct sr_channel *ch;
+ int num_channels, i;
char name[SR_MAX_PROBENAME_LEN + 1];
+ char *param;
- if (in->param && in->param[0]) {
- num_probes = strtoul(in->param, NULL, 10);
- if (num_probes < 1) {
- sr_warn("la8input: %s: strtoul failed", __func__);
- return SR_ERR;
+ (void)filename;
+
+ num_channels = DEFAULT_NUM_PROBES;
+
+ 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;
+ }
}
- } else {
- num_probes = DEFAULT_NUM_PROBES;
}
/* Create a virtual device. */
- in->vdevice = sr_device_new(NULL, 0);
+ in->sdi = sr_dev_inst_new(0, SR_ST_ACTIVE, NULL, NULL, NULL);
- for (i = 0; i < num_probes; i++) {
+ for (i = 0; i < num_channels; i++) {
snprintf(name, SR_MAX_PROBENAME_LEN, "%d", i);
/* TODO: Check return value. */
- sr_device_probe_add(in->vdevice, name);
+ if (!(ch = sr_probe_new(i, SR_PROBE_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_header header;
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_probes;
+ 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_warn("la8input: %s: file open failed", __func__);
+ sr_err("%s: file open failed", __func__);
return SR_ERR;
}
- num_probes = g_slist_length(in->vdevice->probes);
+ 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! */
close(fd); /* FIXME */
return SR_ERR;
}
- sr_dbg("la8input: %s: samplerate is %" PRIu64, __func__, samplerate);
+ sr_dbg("%s: samplerate is %" PRIu64, __func__, samplerate);
/* Send header packet to the session bus. */
- sr_dbg("la8input: %s: sending SR_DF_HEADER packet", __func__);
- packet.type = SR_DF_HEADER;
- packet.payload = &header;
- header.feed_version = 1;
- gettimeofday(&header.starttime, NULL);
- header.num_logic_probes = num_probes;
- header.samplerate = samplerate;
- sr_session_bus(in->vdevice, &packet);
+ 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("la8input: %s: sending SR_DF_LOGIC data packets", __func__);
+ 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.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 = PACKET_SIZE;
- sr_session_bus(in->vdevice, &packet);
+ logic.length = size;
+ sr_session_send(in->sdi, &packet);
}
close(fd); /* FIXME */
/* Send end packet to the session bus. */
- sr_dbg("la8input: %s: sending SR_DF_END", __func__);
+ sr_dbg("%s: sending SR_DF_END", __func__);
packet.type = SR_DF_END;
packet.payload = NULL;
- sr_session_bus(in->vdevice, &packet);
+ sr_session_send(in->sdi, &packet);
return SR_OK;
}
projects / libsigrok.git / blobdiff