From ddd16688e905478acdc28321827c3c0dd1428fc6 Mon Sep 17 00:00:00 2001
From: Jan Breuer <jan.breuer@mobatime.cz>
Date: 周四, 30 11月 2017 23:00:58 +0800
Subject: [PATCH] Fix missing end of comment

---
 libscpi/src/ieee488.c |   39 +++++++++++++++++++++++++++++----------
 1 files changed, 29 insertions(+), 10 deletions(-)

diff --git a/libscpi/src/ieee488.c b/libscpi/src/ieee488.c
index 5212c05..4e1be81 100644
--- a/libscpi/src/ieee488.c
+++ b/libscpi/src/ieee488.c
@@ -51,6 +51,17 @@
 }
 
 /**
+ * Update latching event register value based on bit transitions from 0 -> 1
+ * in the condition register
+ * @param context
+ * @param condReg - condition register name
+ * @param eventReg - event register name
+ */
+static void regUpdateEvent(scpi_t * context, scpi_reg_val_t oldCondVal, scpi_reg_val_t newCondVal, scpi_reg_name_t eventReg) {
+    SCPI_RegSet(context, eventReg, ((oldCondVal ^ newCondVal) & newCondVal) | SCPI_RegGet(context, eventReg));
+}
+
+/**
  * Update STB register according to value and its mask register
  * @param context
  * @param val value of register
@@ -71,7 +82,7 @@
  * @return register value
  */
 scpi_reg_val_t SCPI_RegGet(scpi_t * context, scpi_reg_name_t name) {
-    if ((name < SCPI_REG_COUNT) && (context->registers != NULL)) {
+    if ((name < SCPI_REG_COUNT) && context) {
         return context->registers[name];
     } else {
         return 0;
@@ -102,10 +113,10 @@
     scpi_reg_val_t mask;
     scpi_reg_val_t old_val;
 
-    if ((name >= SCPI_REG_COUNT) || (context->registers == NULL)) {
+    if ((name >= SCPI_REG_COUNT) || (context == NULL)) {
         return;
     }
-    
+
     /* store old register value */
     old_val = context->registers[name];
 
@@ -142,14 +153,20 @@
         case SCPI_REG_QUESE:
             regUpdate(context, SCPI_REG_QUES);
             break;
+        case SCPI_REG_QUESC:
+            regUpdateEvent(context, old_val, val, SCPI_REG_QUES);
+            break;
         case SCPI_REG_OPER:
             regUpdateSTB(context, val, SCPI_REG_OPERE, STB_OPS);
             break;
         case SCPI_REG_OPERE:
             regUpdate(context, SCPI_REG_OPER);
             break;
-            
-            
+        case SCPI_REG_OPERC:
+            regUpdateEvent(context, old_val, val, SCPI_REG_OPER);
+            break;
+
+
         case SCPI_REG_COUNT:
             /* nothing to do */
             break;
@@ -212,9 +229,10 @@
 scpi_result_t SCPI_CoreEse(scpi_t * context) {
     int32_t new_ESE;
     if (SCPI_ParamInt32(context, &new_ESE, TRUE)) {
-        SCPI_RegSet(context, SCPI_REG_ESE, (scpi_reg_val_t)new_ESE);
+        SCPI_RegSet(context, SCPI_REG_ESE, (scpi_reg_val_t) new_ESE);
+        return SCPI_RES_OK;
     }
-    return SCPI_RES_OK;
+    return SCPI_RES_ERR;
 }
 
 /**
@@ -251,7 +269,7 @@
  */
 scpi_result_t SCPI_CoreIdnQ(scpi_t * context) {
     int i;
-    for (i = 0; i<4; i++) {
+    for (i = 0; i < 4; i++) {
         if (context->idn[i]) {
             SCPI_ResultMnemonic(context, context->idn[i]);
         } else {
@@ -302,9 +320,10 @@
 scpi_result_t SCPI_CoreSre(scpi_t * context) {
     int32_t new_SRE;
     if (SCPI_ParamInt32(context, &new_SRE, TRUE)) {
-        SCPI_RegSet(context, SCPI_REG_SRE, (scpi_reg_val_t)new_SRE);
+        SCPI_RegSet(context, SCPI_REG_SRE, (scpi_reg_val_t) new_SRE);
+        return SCPI_RES_OK;
     }
-    return SCPI_RES_OK;
+    return SCPI_RES_ERR;
 }
 
 /**

--
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