From 48026bb824fd2d9cfb00ecd040db6ef3a416bae9 Mon Sep 17 00:00:00 2001
From: Clyne Sullivan <clyne@bitgloo.com>
Date: Fri, 22 Jan 2021 21:43:36 -0500
Subject: upload initial port

---
 ChibiOS_20.3.2/os/rt/include/chtm.h | 109 ++++++++++++++++++++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100644 ChibiOS_20.3.2/os/rt/include/chtm.h

(limited to 'ChibiOS_20.3.2/os/rt/include/chtm.h')

diff --git a/ChibiOS_20.3.2/os/rt/include/chtm.h b/ChibiOS_20.3.2/os/rt/include/chtm.h
new file mode 100644
index 0000000..f068251
--- /dev/null
+++ b/ChibiOS_20.3.2/os/rt/include/chtm.h
@@ -0,0 +1,109 @@
+/*
+    ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio.
+
+    This file is part of ChibiOS.
+
+    ChibiOS 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.
+
+    ChibiOS 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/>.
+*/
+
+/**
+ * @file    rt/include/chtm.h
+ * @brief   Time Measurement module macros and structures.
+ *
+ * @addtogroup time_measurement
+ * @{
+ */
+
+#ifndef CHTM_H
+#define CHTM_H
+
+#if (CH_CFG_USE_TM == TRUE) || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Module constants.                                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module pre-compile time settings.                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Derived constants and error checks.                                       */
+/*===========================================================================*/
+
+#if PORT_SUPPORTS_RT == FALSE
+#error "CH_CFG_USE_TM requires PORT_SUPPORTS_RT"
+#endif
+
+/*===========================================================================*/
+/* Module data structures and types.                                         */
+/*===========================================================================*/
+
+/**
+ * @brief   Type of a time measurement calibration data.
+ */
+typedef struct {
+  /**
+   * @brief   Measurement calibration value.
+   */
+  rtcnt_t               offset;
+} tm_calibration_t;
+
+/**
+ * @brief   Type of a Time Measurement object.
+ * @note    The maximum measurable time period depends on the implementation
+ *          of the realtime counter and its clock frequency.
+ * @note    The measurement is not 100% cycle-accurate, it can be in excess
+ *          of few cycles depending on the compiler and target architecture.
+ * @note    Interrupts can affect measurement if the measurement is performed
+ *          with interrupts enabled.
+ */
+typedef struct {
+  rtcnt_t               best;           /**< @brief Best measurement.       */
+  rtcnt_t               worst;          /**< @brief Worst measurement.      */
+  rtcnt_t               last;           /**< @brief Last measurement.       */
+  ucnt_t                n;              /**< @brief Number of measurements. */
+  rttime_t              cumulative;     /**< @brief Cumulative measurement. */
+} time_measurement_t;
+
+/*===========================================================================*/
+/* Module macros.                                                            */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* External declarations.                                                    */
+/*===========================================================================*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+  void _tm_init(void);
+  void chTMObjectInit(time_measurement_t *tmp);
+  NOINLINE void chTMStartMeasurementX(time_measurement_t *tmp);
+  NOINLINE void chTMStopMeasurementX(time_measurement_t *tmp);
+  NOINLINE void chTMChainMeasurementToX(time_measurement_t *tmp1,
+                                        time_measurement_t *tmp2);
+#ifdef __cplusplus
+}
+#endif
+
+/*===========================================================================*/
+/* Module inline functions.                                                  */
+/*===========================================================================*/
+
+#endif /* CH_CFG_USE_TM == TRUE */
+
+#endif /* CHTM_H */
+
+/** @} */
-- 
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