From 6f4af841f6fdd099b97d071ae64c8be60f809456 Mon Sep 17 00:00:00 2001 From: "Suren A. Chilingaryan" Date: Thu, 25 May 2023 22:41:04 +0200 Subject: A sample event engine for pcitool (not requiring any PCIe hardware). Initial (barely tested and intended only as an example) release --- apps/grab.c | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 apps/grab.c (limited to 'apps/grab.c') diff --git a/apps/grab.c b/apps/grab.c new file mode 100644 index 0000000..b891e2f --- /dev/null +++ b/apps/grab.c @@ -0,0 +1,63 @@ +#include +#include + +#include +#include + +#include + +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; + ipecamera_event_info_t info; + ipecamera_t *ipecamera; + size_t size; + void *data; + FILE *f; + + pcilib_set_logger(PCILIB_LOG_WARNING, &log_error, NULL); + + pcilib_t *pcilib = pcilib_open("/dev/fpga0", "ipecamera"); + if (!pcilib) pcilib_error("Error opening device"); + + ipecamera = (ipecamera_t*)pcilib_get_event_engine(pcilib); + if (!ipecamera) pcilib_error("Failed to get ipecamera event engine"); + + err = ipecamera_set_buffer_size(ipecamera, 8); + if (err) pcilib_error("Error (%i) setting buffer size", err); + + 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); +} -- cgit v1.2.3