Merged r10712:10765 from jcorgan/gpio into trunk. Adds out-of-band and streaming GPIO functions for USRP2.

git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@10766 221aa14e-8319-0410-a670-987f0aec2ac5

2 files changed, 48 insertions, 1 deletions

diff --git a/usrp2/host/apps/Makefile.am b/usrp2/host/apps/Makefile.am
index b6f1c03ff..da44776c9 100644
--- a/usrp2/host/apps/Makefile.am
+++ b/usrp2/host/apps/Makefile.am
@@ -36,7 +36,8 @@ noinst_PROGRAMS = \
 	gen_const \
 	rx_streaming_samples \
 	tx_samples \
-	test_mimo_tx
+	test_mimo_tx \
+	gpio
 
 find_usrps_SOURCES = find_usrps.cc
 usrp2_burn_mac_addr_SOURCES = usrp2_burn_mac_addr.cc
diff --git a/usrp2/host/apps/gpio.cc b/usrp2/host/apps/gpio.cc
new file mode 100644
index 000000000..770b54ee2
--- /dev/null
+++ b/usrp2/host/apps/gpio.cc
@@ -0,0 +1,46 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2009 Free Software Foundation, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <usrp2/usrp2.h>
+#include <iostream>
+
+int
+main(int argc, char **argv)
+{
+  usrp2::usrp2::sptr u2 = usrp2::usrp2::make("eth0");
+
+  // Set io_tx[15] as FPGA output
+  u2->set_gpio_ddr(usrp2::GPIO_TX_BANK, 0x8000, 0x8000);
+
+  // Set io_tx[15] under host sofware control
+  u2->set_gpio_sels(usrp2::GPIO_TX_BANK, "s...............");
+
+  // Write pins
+  uint16_t v = 0x8765;
+  u2->write_gpio(usrp2::GPIO_TX_BANK, v, 0x8000);
+
+  // Read back
+  v = 0;
+  u2->read_gpio(usrp2::GPIO_TX_BANK, &v);
+  printf("TX GPIO read: %04X\n", v);
+  return 0;
+}