From f440728644ad3698ffd6af1abcfcc07aad5793c3 Mon Sep 17 00:00:00 2001
From: Clyne Sullivan <clyne@bitgloo.com>
Date: Tue, 8 Aug 2023 23:10:02 -0400
Subject: initial commit

* combine all source files into this monorepo

* convert all third-party source packages into submodules

* small fixes due to changes in latest third-part packages
---
 firmware/source/conversion.hpp | 64 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 64 insertions(+)
 create mode 100644 firmware/source/conversion.hpp

(limited to 'firmware/source/conversion.hpp')

diff --git a/firmware/source/conversion.hpp b/firmware/source/conversion.hpp
new file mode 100644
index 0000000..ca0054a
--- /dev/null
+++ b/firmware/source/conversion.hpp
@@ -0,0 +1,64 @@
+/**
+ * @file conversion.hpp
+ * @brief Manages algorithm application (converts input samples to output).
+ *
+ * Copyright (C) 2021 Clyne Sullivan
+ *
+ * Distributed under the GNU GPL v3 or later. You should have received a copy of
+ * the GNU General Public License along with this program.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef STMDSP_CONVERSION_HPP
+#define STMDSP_CONVERSION_HPP
+
+#include "ch.h"
+#include "hal.h"
+
+#include <array>
+
+constexpr unsigned int CONVERSION_THREAD_STACK_SIZE = 
+#if defined(TARGET_PLATFORM_H7)
+                                                  62 * 1024;
+#else
+                                                  15 * 1024;
+#endif
+
+class ConversionManager
+{
+public:
+    static void begin();
+
+    // Begins sample conversion.
+    static void start();
+    // Prepare to measure execution time of next conversion.
+    static void startMeasurement();
+    // Stops conversion.
+    static void stop();
+
+    static thread_t *getMonitorHandle();
+
+    // Internal only: Aborts a running conversion.
+    static void abort(bool fpu_stacked = true);
+
+private:
+    static void threadMonitor(void *);
+    static void threadRunnerEntry(void *stack);
+
+    static void threadRunner(void *);
+    static void adcReadHandler(adcsample_t *buffer, size_t);
+    static void adcReadHandlerMeasure(adcsample_t *buffer, size_t);
+
+    static thread_t *m_thread_monitor;
+    static thread_t *m_thread_runner;
+
+    static std::array<char, 1024> m_thread_monitor_stack;
+    static std::array<char, THD_WORKING_AREA_SIZE(128)> m_thread_runner_entry_stack;
+    static std::array<char, CONVERSION_THREAD_STACK_SIZE> m_thread_runner_stack;
+
+    static std::array<msg_t, 2> m_mailbox_buffer;
+    static mailbox_t m_mailbox;
+};
+
+#endif // STMDSP_CONVERSION_HPP
+
-- 
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