Initial commit for N3xx development.

- Creates mpm/ subdirectory
- First pass at hardware daemon/MPM
- New code for LMK04828, AD9371
- spidev integration

Contributions by:

Martin Braun <martin.braun@ettus.com>
Derek Kozel <derek.kozel@ettus.com>
Mark Meserve <mark.meserve@ni.com>
Andrej Rode <andrej.rode@ettus.com>

1 files changed, 25 insertions, 0 deletions

diff --git a/mpm/lib/spi/spi_lock.h b/mpm/lib/spi/spi_lock.h
new file mode 100644
index 000000000..55ddb0baf
--- /dev/null
+++ b/mpm/lib/spi/spi_lock.h
@@ -0,0 +1,25 @@
+#pragma once
+
+#include <boost/noncopyable.hpp>
+#include <memory>
+#include <mutex>
+
+class spi_lock : public boost::noncopyable
+{
+public:
+    using sptr = std::shared_ptr<spi_lock>;
+    static sptr make(uint8_t spidev_index);
+
+    spi_lock(uint8_t spidev_index);
+
+    uint8_t get_spidev() const;
+
+private:
+    const uint8_t spidev_index;
+
+    // BasicLockable implementation for lock_guard
+    mutable std::mutex spi_mutex;
+    friend class std::lock_guard<spi_lock>;
+    void lock();
+    void unlock();
+};
\ No newline at end of file