Experimental Physics and
Industrial Control System

Abdalla Ahmad via Tech-talk <tech-talk at aps.anl.gov> · Tue, 3 Nov 2020 16:04:07 +0000

void LiberaSpark::performDAQ()
{
	printf("DAQ Thread initialized!\n");

	string line = "";
	char* command = (char*) "ADC 200\n";
	int status;
	ssize_t bytes;
	char buffer[48];
	struct pollfd polling_fds[1];

	polling_fds[0].fd = this->device_socket;
	polling_fds[0].events = POLLIN;
	polling_fds[0].revents = 0;
	while(true)
	{
		lock();
		pthread_mutex_lock(&device_mutex);

		bytes = write(device_socket, command, strlen(command));

		status = poll(polling_fds, 1, 1);
		int i = 0;
		while(status > 0)
		{
			memset(buffer, 0, sizeof(buffer));
			bytes = read(device_socket, buffer, sizeof(buffer));
			buffer[bytes - 1] = '\0';
			stringstream ss(buffer);
			cout << ss.str() << endl;
			while(ss >> line)
			{
				if(i % 4 == 0)
					adc_a[i / 4] = atoi(line.c_str());
				i++;
			}
			status = poll(polling_fds, 1, 1);
		}
	
		pthread_mutex_unlock(&device_mutex);
		unlock();
		sleep(1);
	}
}

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System