Add sample apps to use event and dma engines

6 files changed, 227 insertions, 3 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1ed3e40..b67a503 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -24,7 +24,7 @@ VERSION_TO_VARS(${PCIDEV_VERSION} PCIDEV_VERSION_MAJOR PCIDEV_VERSION_MINOR PCID
 include(GNUInstallDirs)
 
 add_subdirectory(xml)
-#add_subdirectory(apps)
+add_subdirectory(apps)
 
 include_directories(
     ${CMAKE_SOURCE_DIR}
diff --git a/apps/CMakeLists.txt b/apps/CMakeLists.txt
index 761bb2b..de45e38 100644
--- a/apps/CMakeLists.txt
+++ b/apps/CMakeLists.txt
@@ -8,6 +8,14 @@ link_directories(
     ${PCILIB_LIBRARY_DIRS}
 )
 
+add_executable(stream-dma stream-dma.c)
+target_link_libraries(stream-dma ${PCILIB_LIBRARIES})
 
-add_executable(grab grab.c)
-target_link_libraries(grab ${PCILIB_LIBRARIES} ipecamera)
+add_executable(stream-events stream-events.c)
+target_link_libraries(stream-events ${PCILIB_LIBRARIES})
+
+add_executable(grab-frame grab-frame.c)
+target_link_libraries(grab-frame ${PCILIB_LIBRARIES})
+
+#add_executable(ipecam ipecam.c)
+#target_link_libraries(ipecam ${PCILIB_LIBRARIES} ipecamera)
diff --git a/apps/grab-frame.c b/apps/grab-frame.c
new file mode 100644
index 0000000..0cbdc00
--- /dev/null
+++ b/apps/grab-frame.c
@@ -0,0 +1,57 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <pcilib.h>
+#include <pcilib/error.h>
+
+void log_error(void *arg, const char *file, int line, pcilib_log_priority_t prio, const char *format, va_list ap) {
+    vprintf(format, ap);
+    printf("\n");
+
+    if (prio == PCILIB_LOG_ERROR) {
+	printf("Exiting at [%s:%u]\n\n", file, line);
+	exit(-1);
+    }
+}
+
+
+int main() {
+    int err;
+    pcilib_event_id_t evid;
+    pcilib_event_info_t info;
+    size_t size;
+    void *data;
+    FILE *f;
+
+    pcilib_set_logger(PCILIB_LOG_WARNING, &log_error, NULL);
+
+    pcilib_t *pcilib = pcilib_open("/dev/fpga0", "pcidev");
+    if (!pcilib) pcilib_error("Error opening device");
+
+//    pcilib_context_t *evdev = (pcilib_context_t*)pcilib_get_event_engine(pcilib);
+//    if (!evdev) pcilib_error("Failed to get event engine");
+
+    err = pcilib_start(pcilib, PCILIB_EVENTS_ALL, PCILIB_EVENT_FLAGS_DEFAULT);
+    if (err) pcilib_error("Error (%i) starting event engine", err);
+
+    err = pcilib_trigger(pcilib, PCILIB_EVENT0, 0, NULL);
+    if (err) pcilib_error("Error (%i) triggering event", err);
+
+    err = pcilib_get_next_event(pcilib, 100000, &evid, sizeof(info), (pcilib_event_info_t*)&info);
+    if (err) pcilib_error("Error (%i) while waiting for event", err);
+
+    data = pcilib_get_data(pcilib, evid, PCILIB_EVENT_DATA, &size);
+    if (!data) pcilib_error("Error getting event data");
+
+    printf("Writting %zu bytes to /dev/null\n", size);
+    f = fopen("/dev/null", "w");
+    if (f) {
+	fwrite(data, 1, size, f);
+	fclose(f);
+    }
+
+    err = pcilib_return_data(pcilib, evid, PCILIB_EVENT_DATA, data);
+    if (err) pcilib_error("Error returning data, data is possibly corrupted");
+
+    pcilib_stop(pcilib, PCILIB_EVENT_FLAGS_DEFAULT);
+}
diff --git a/apps/grab.c b/apps/ipecam.c
index b891e2f..b891e2f 100644
--- a/apps/grab.c
+++ b/apps/ipecam.c
diff --git a/apps/stream-dma.c b/apps/stream-dma.c
new file mode 100644
index 0000000..3f1bcba
--- /dev/null
+++ b/apps/stream-dma.c
@@ -0,0 +1,71 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <signal.h>
+
+#include <pcilib.h>
+#include <pcilib/error.h>
+
+void log_error(void *arg, const char *file, int line, pcilib_log_priority_t prio, const char *format, va_list ap) {
+    vprintf(format, ap);
+    printf("\n");
+
+    if (prio == PCILIB_LOG_ERROR) {
+	printf("Exiting at [%s:%u]\n\n", file, line);
+	exit(-1);
+    }
+}
+
+
+static int StopFlag = 0;
+
+static void signal_exit_handler(int signo) { 
+    if (++StopFlag > 2)
+	exit(-1);
+}
+
+int datacb(void *ctx, pcilib_dma_flags_t flags, size_t bufsize, void *buf) {
+    static size_t packets = 0;
+    static size_t size = 0;
+    static struct timeval last = {0};
+    struct timeval cur;
+    size_t us = 0;
+
+    gettimeofday(&cur,NULL);
+    if (last.tv_sec > 0) 
+	us = (cur.tv_sec - last.tv_sec)*1000000 + (cur.tv_usec - last.tv_usec);
+
+    packets++;
+    size += bufsize;
+
+    if ((!us)||(StopFlag)||(us > 1000000)) {
+	printf("Received %zu buffers with total size of %zu GB (last ptr: %p, size: %zu)\n", packets, size/1024/1024/1024, buf, bufsize);
+	memcpy(&last, &cur, sizeof(struct timeval));
+	packets = 0;
+	size = 0;
+    }
+
+    return StopFlag?PCILIB_STREAMING_STOP:PCILIB_STREAMING_WAIT;
+}
+
+int main() {
+    int err;
+    pcilib_dma_engine_t dmaid = 0;
+
+    signal(SIGINT, signal_exit_handler);
+
+    pcilib_set_logger(PCILIB_LOG_WARNING, &log_error, NULL);
+
+    pcilib_t *pcilib = pcilib_open("/dev/fpga0", "pcidev");
+    if (!pcilib) pcilib_error("Error opening device");
+
+    err = pcilib_start_dma (pcilib, dmaid, PCILIB_DMA_FLAGS_DEFAULT);
+    if (err) pcilib_error("Error %i starting DMA", err);
+
+    err = pcilib_stream_dma (pcilib, dmaid, 0, 0, PCILIB_DMA_FLAGS_DEFAULT, PCILIB_TIMEOUT_INFINITE, datacb, NULL);
+    if (err) pcilib_error("Error %i streaming DMA", err);
+
+    pcilib_stop_dma (pcilib, dmaid, PCILIB_DMA_FLAGS_DEFAULT);
+
+    pcilib_stop(pcilib, PCILIB_EVENT_FLAGS_DEFAULT);
+}
diff --git a/apps/stream-events.c b/apps/stream-events.c
new file mode 100644
index 0000000..81d811f
--- /dev/null
+++ b/apps/stream-events.c
@@ -0,0 +1,88 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <signal.h>
+
+#include <pcilib.h>
+#include <pcilib/error.h>
+
+void log_error(void *arg, const char *file, int line, pcilib_log_priority_t prio, const char *format, va_list ap) {
+    vprintf(format, ap);
+    printf("\n");
+
+    if (prio == PCILIB_LOG_ERROR) {
+	printf("Exiting at [%s:%u]\n\n", file, line);
+	exit(-1);
+    }
+}
+
+static int StopFlag = 0;
+
+static void signal_exit_handler(int signo) { 
+    if (++StopFlag > 2)
+	exit(-1);
+}
+
+
+
+int evcb(pcilib_event_id_t evid, const pcilib_event_info_t *info, void *user) {
+    int err;
+    pcilib_t *pcilib = (pcilib_t*)user;
+
+    void *data;
+    size_t datasize;
+
+    static size_t packets = 0;
+    static size_t size = 0;
+    static struct timeval last = {0};
+    struct timeval cur;
+    size_t us = 0;
+
+    data = pcilib_get_data(pcilib, evid, PCILIB_EVENT_DATA, &datasize);
+    if (!data) pcilib_error("Error getting event data");
+
+    gettimeofday(&cur,NULL);
+    if (last.tv_sec > 0) 
+	us = (cur.tv_sec - last.tv_sec)*1000000 + (cur.tv_usec - last.tv_usec);
+
+    packets++;
+    size += datasize;
+
+    if ((!us)||(StopFlag)||(us > 1000000)) {
+	printf("Received %zu packets with total size of %zu MB (last size: %zu)\n", packets, size/1024/1024, datasize);
+	memcpy(&last, &cur, sizeof(struct timeval));
+	packets = 0;
+	size = 0;
+    }
+
+    err = pcilib_return_data(pcilib, evid, PCILIB_EVENT_DATA, data);
+    if (err) pcilib_error("Error returning data, data is possibly corrupted");
+
+    return StopFlag?PCILIB_STREAMING_STOP:PCILIB_STREAMING_CONTINUE;
+}
+
+
+int main() {
+    int err;
+
+    signal(SIGINT, signal_exit_handler);
+
+    pcilib_set_logger(PCILIB_LOG_WARNING, &log_error, NULL);
+
+    pcilib_t *pcilib = pcilib_open("/dev/fpga0", "pcidev");
+    if (!pcilib) pcilib_error("Error opening device");
+
+//    pcilib_context_t *evdev = (pcilib_context_t*)pcilib_get_event_engine(pcilib);
+//    if (!evdev) pcilib_error("Failed to get event engine");
+
+    err = pcilib_start(pcilib, PCILIB_EVENTS_ALL, PCILIB_EVENT_FLAGS_DEFAULT);
+    if (err) pcilib_error("Error (%i) starting event engine", err);
+
+//    err = pcilib_trigger(pcilib, PCILIB_EVENT0, 0, NULL);
+//    if (err) pcilib_error("Error (%i) triggering event", err);
+
+    err = pcilib_stream(pcilib, evcb, pcilib);
+    if (err) pcilib_error("Error (%i) streaming events", err);
+
+    pcilib_stop(pcilib, PCILIB_EVENT_FLAGS_DEFAULT);
+}