From d5316f5795e3557d032af9a95ba4e5fa88191834 Mon Sep 17 00:00:00 2001
From: Timothy Pearson <kb9vqf@pearsoncomputing.net>
Date: Wed, 4 Jul 2012 20:29:14 -0500
Subject: Add interface mode selection Make servers use less CPU

---
 servers/fpga_server_lin/src/fpga_conn.cpp | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

(limited to 'servers/fpga_server_lin/src')

diff --git a/servers/fpga_server_lin/src/fpga_conn.cpp b/servers/fpga_server_lin/src/fpga_conn.cpp
index 6f4cecf..3acd499 100644
--- a/servers/fpga_server_lin/src/fpga_conn.cpp
+++ b/servers/fpga_server_lin/src/fpga_conn.cpp
@@ -161,13 +161,16 @@ int FPGASocket::setupSerial() {
 void FPGASocket::commandLoop() {
 	int cc;
 	char buffer[10000];
+	bool transferred_data;
 
 	m_criticalSection++;
 	try {
+		transferred_data = false;
 		if (state() == TQSocket::Connected) {
 			cc = read(m_fd_tty, buffer, 10000);
 			if (cc > 0) {
 				writeBlock(buffer, cc);
+				transferred_data = true;
 				printf("[DEBUG] Got %d bytes from the serial port\n\r", cc); fflush(stdout);
 			}
 			if (canReadData()) {
@@ -176,12 +179,18 @@ void FPGASocket::commandLoop() {
 					if (write(m_fd_tty, buffer, cc) < 0) {
 						// ERROR
 					}
+					transferred_data = true;
 					printf("[DEBUG] Got %d bytes from the network interface\n\r", cc); fflush(stdout);
 				}
 			}
 		}
 		m_criticalSection--;
-		if (m_loopTimer) m_loopTimer->start(0, TRUE);
+		if (transferred_data) {
+			if (m_loopTimer) m_loopTimer->start(0, TRUE);
+		}
+		else {
+			if (m_loopTimer) m_loopTimer->start(100, TRUE);
+		}
 		return;
 	}
 	catch (...) {
-- 
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