1 files changed, 49 insertions, 0 deletions
diff --git a/host/lib/usrp/usrp_e/usrp_e_regs.hpp b/host/lib/usrp/usrp_e/usrp_e_regs.hpp
new file mode 100644
index 000000000..219f459a5
--- /dev/null
+++ b/host/lib/usrp/usrp_e/usrp_e_regs.hpp
@@ -0,0 +1,49 @@
+//
+// Copyright 2010 Ettus Research LLC
+//
+// 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/>.
+//
+
+#ifndef INCLUDED_USRP_E_REGS_HPP
+#define INCLUDED_USRP_E_REGS_HPP
+
+#include <boost/cstdint.hpp>
+
+////////////////////////////////////////////////
+// GPIO, Slave 4
+//
+// These go to the daughterboard i/o pins
+
+#define GPIO_BASE 0x40
+
+struct gpio_regs_t{
+    boost::uint16_t rx_io;      // tx data in high 16, rx in low 16
+    boost::uint16_t tx_io;
+    boost::uint16_t rx_ddr;     // 32 bits, 1 means output. tx in high 16, rx in low 16
+    boost::uint16_t tx_ddr;
+    boost::uint16_t tx_sel_low; // 16 2-bit fields select which source goes to TX DB
+    boost::uint16_t tx_sel_high;
+    boost::uint16_t rx_sel_low; // 16 2-bit fields select which source goes to RX DB
+    boost::uint16_t rx_sel_high;
+};
+
+// each 2-bit sel field is layed out this way
+#define GPIO_SEL_SW        0 // if pin is an output, set by software in the io reg
+#define GPIO_SEL_ATR       1 // if pin is an output, set by ATR logic
+#define GPIO_SEL_DEBUG_0   2 // if pin is an output, debug lines from FPGA fabric
+#define GPIO_SEL_DEBUG_1   3 // if pin is an output, debug lines from FPGA fabric
+
+//#define gpio_base ((gpio_regs_t *) GPIO_BASE)
+
+#endif /* INCLUDED_USRP_E_REGS_HPP */