From e75668f53b3347044e5029d296ee6a7915627063 Mon Sep 17 00:00:00 2001
From: barthess <barthess@yandex.ru>
Date: Tue, 3 Mar 2015 22:43:25 +0300
Subject: EICU. Cosmetical cleanup

---
 os/hal/ports/STM32/LLD/eicu_lld.c | 27 +++++++++++++++++++++++----
 os/hal/ports/STM32/LLD/eicu_lld.h | 22 +++++++++++++++++-----
 2 files changed, 40 insertions(+), 9 deletions(-)

(limited to 'os/hal/ports')

diff --git a/os/hal/ports/STM32/LLD/eicu_lld.c b/os/hal/ports/STM32/LLD/eicu_lld.c
index 9b901f9..0245128 100644
--- a/os/hal/ports/STM32/LLD/eicu_lld.c
+++ b/os/hal/ports/STM32/LLD/eicu_lld.c
@@ -128,11 +128,12 @@ EICUDriver EICUD12;
 /* Driver local functions.                                                   */
 /*===========================================================================*/
 /**
- * @brief     Returns the time between latest 2 capture events.
+ * @brief     Returns both pulse width and period.
  * @details   The time is defined as number of ticks.
  *
  * @param[in] eicup     Pointer to the EICUDriver object.
  * @param[in] channel   The timer channel that fired the interrupt.
+ * @param[in] compare   Content of the CCR register.
  * @return              The number of ticks.
  *
  * @notapi
@@ -172,7 +173,15 @@ static eicuresult_t get_time_both(EICUDriver *eicup,
 }
 
 /**
+ * @brief     Returns pulse width.
+ * @details   The time is defined as number of ticks.
  *
+ * @param[in] eicup     Pointer to the EICUDriver object.
+ * @param[in] channel   The timer channel that fired the interrupt.
+ * @param[in] compare   Content of the CCR register.
+ * @return              The number of ticks.
+ *
+ * @notapi
  */
 static eicucnt_t get_time_width(EICUDriver *eicup,
                                 eicuchannel_t channel,
@@ -202,7 +211,15 @@ static eicucnt_t get_time_width(EICUDriver *eicup,
 }
 
 /**
+ * @brief     Returns both pulse period.
+ * @details   The time is defined as number of ticks.
  *
+ * @param[in] eicup     Pointer to the EICUDriver object.
+ * @param[in] channel   The timer channel that fired the interrupt.
+ * @param[in] compare   Content of the CCR register.
+ * @return              The number of ticks.
+ *
+ * @notapi
  */
 static eicucnt_t get_time_period(EICUDriver *eicup,
                                  eicuchannel_t channel,
@@ -285,7 +302,7 @@ static void isr_invoke_edge_cb(EICUDriver *eicup, eicuchannel_t channel) {
 }
 
 /**
- * @brief   Common ISR call.
+ * @brief   Common EICU detect call.
  *
  * @param[in] eicup     Pointer to the @p EICUDriver object
  * @param[in] channel   The timer channel that fired the interrupt.
@@ -327,9 +344,11 @@ static void eicu_lld_serve_interrupt(EICUDriver *eicup) {
 }
 
 /**
+ * @brief   Starts every channel.
  *
+ * @param[in] eicup     Pointer to the @p EICUDriver object
  */
-static void eicu_channels_start(EICUDriver *eicup) {
+static void start_channels(EICUDriver *eicup) {
 
   /* Set each input channel that is used as: a normal input capture channel,
      link the corresponding CCR register and set polarity. */
@@ -827,7 +846,7 @@ void eicu_lld_start(EICUDriver *eicup) {
   }
 #endif
 
-  eicu_channels_start(eicup);
+  start_channels(eicup);
 }
 
 /**
diff --git a/os/hal/ports/STM32/LLD/eicu_lld.h b/os/hal/ports/STM32/LLD/eicu_lld.h
index 5c6c3fa..4f10893 100644
--- a/os/hal/ports/STM32/LLD/eicu_lld.h
+++ b/os/hal/ports/STM32/LLD/eicu_lld.h
@@ -256,17 +256,29 @@
  * @brief   Active level selector.
  */
 typedef enum {
-  EICU_INPUT_ACTIVE_HIGH = 0,       /**< Trigger on rising edge.            */
-  EICU_INPUT_ACTIVE_LOW = 1,        /**< Trigger on falling edge.           */
+  EICU_INPUT_ACTIVE_HIGH,           /**< Trigger on rising edge.            */
+  EICU_INPUT_ACTIVE_LOW,            /**< Trigger on falling edge.           */
 } eicuactivelevel_t;
 
 /**
  * @brief   Input type selector.
  */
 typedef enum {
-  EICU_INPUT_EDGE = 0,        /**< Measures time between consequent edges.*/
-  EICU_INPUT_PULSE = 1,       /**< Measures pulse width.*/
-  EICU_INPUT_BOTH = 2         /**< Measures both period and width. */
+  /**
+   * @brief   Measures time between consequent edges.
+   * @details Callback fires on every _active_ edge.
+   */
+  EICU_INPUT_EDGE,
+  /**
+   * @brief   Measures pulse width.
+   * @details Callback fires on _idle_ edge of pulse.
+   */
+  EICU_INPUT_PULSE,
+  /**
+   * @brief   Measures both period and width..
+   * @details Callback fires on _active_ edge of pulse.
+   */
+  EICU_INPUT_BOTH
 } eicucapturemode_t;
 
 /**
-- 
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