From b5e8e4dc2bdeca39195a78d8d7f01bd7f099923c Mon Sep 17 00:00:00 2001
From: Jan Breuer <jan.breuer@jaybee.cz>
Date: 周五, 13 11月 2015 18:54:29 +0800
Subject: [PATCH] Resolve #65: Cast char to unsigned in isctype functions

---
 libscpi/src/error.c |   90 +++++++++++++++++++++++++++++++++------------
 1 files changed, 66 insertions(+), 24 deletions(-)

diff --git a/libscpi/src/error.c b/libscpi/src/error.c
index 6dd3e6d..df3db2c 100644
--- a/libscpi/src/error.c
+++ b/libscpi/src/error.c
@@ -2,7 +2,7 @@
  * Copyright (c) 2012-2013 Jan Breuer,
  *
  * All Rights Reserved
- * 
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
@@ -11,7 +11,7 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- * 
+ *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
@@ -28,10 +28,10 @@
 /**
  * @file   scpi_error.c
  * @date   Thu Nov 15 10:58:45 UTC 2012
- * 
+ *
  * @brief  Error handling and storing routines
- * 
- * 
+ *
+ *
  */
 
 #include <stdint.h>
@@ -44,8 +44,10 @@
 /* basic FIFO */
 static scpi_fifo_t local_error_queue;
 
-
-
+/**
+ * Initialize error queue
+ * @param context - scpi context
+ */
 void SCPI_ErrorInit(scpi_t * context) {
     /*
      * // FreeRTOS
@@ -53,8 +55,35 @@
      */
 
     /* basic FIFO */
-    context->error_queue = (scpi_error_queue_t)&local_error_queue;
-    fifo_init((scpi_fifo_t *)context->error_queue);
+    context->error_queue = (scpi_error_queue_t) & local_error_queue;
+    fifo_init((scpi_fifo_t *) context->error_queue);
+}
+
+/**
+ * Emit no error
+ * @param context scpi context
+ */
+static void SCPI_ErrorEmitEmpty(scpi_t * context) {
+    if ((SCPI_ErrorCount(context) == 0) && (SCPI_RegGet(context, SCPI_REG_STB) & STB_QMA)) {
+        SCPI_RegClearBits(context, SCPI_REG_STB, STB_QMA);
+
+        if (context->interface && context->interface->error) {
+            context->interface->error(context, 0);
+        }
+    }
+}
+
+/**
+ * Emit error
+ * @param context scpi context
+ * @param err Error to emit
+ */
+static void SCPI_ErrorEmit(scpi_t * context, int16_t err) {
+    SCPI_RegSetBits(context, SCPI_REG_STB, STB_QMA);
+
+    if (context->interface && context->interface->error) {
+        context->interface->error(context, err);
+    }
 }
 
 /**
@@ -68,7 +97,9 @@
      */
 
     /* basic FIFO */
-    fifo_clear((scpi_fifo_t *)context->error_queue);
+    fifo_clear((scpi_fifo_t *) context->error_queue);
+
+    SCPI_ErrorEmitEmpty(context);
 }
 
 /**
@@ -87,7 +118,9 @@
      */
 
     /* basic FIFO */
-    fifo_remove((scpi_fifo_t *)context->error_queue, &result);
+    fifo_remove((scpi_fifo_t *) context->error_queue, &result);
+
+    SCPI_ErrorEmitEmpty(context);
 
     return result;
 }
@@ -95,7 +128,7 @@
 /**
  * Return number of errors/events in the queue
  * @param context
- * @return 
+ * @return
  */
 int32_t SCPI_ErrorCount(scpi_t * context) {
     int16_t result = 0;
@@ -106,7 +139,7 @@
      */
 
     /* basic FIFO */
-    fifo_count((scpi_fifo_t *)context->error_queue, &result);
+    fifo_count((scpi_fifo_t *) context->error_queue, &result);
 
     return result;
 }
@@ -118,7 +151,7 @@
      */
 
     /* basic FIFO */
-    fifo_add((scpi_fifo_t *)context->error_queue, err);
+    fifo_add((scpi_fifo_t *) context->error_queue, err);
 }
 
 struct error_reg {
@@ -127,12 +160,13 @@
     scpi_reg_val_t bit;
 };
 
-#define ERROR_DEFS_N	8
+#define ERROR_DEFS_N	9
 
 static const struct error_reg errs[ERROR_DEFS_N] = {
     {-100, -199, ESR_CER}, /* Command error (e.g. syntax error) ch 21.8.9    */
     {-200, -299, ESR_EER}, /* Execution Error (e.g. range error) ch 21.8.10  */
     {-300, -399, ESR_DER}, /* Device specific error -300, -399 ch 21.8.11    */
+    { 1, 32767, ESR_DER}, /* Device designer provided specific error 1, 32767 ch 21.8.11    */
     {-400, -499, ESR_QER}, /* Query error -400, -499 ch 21.8.12              */
     {-500, -599, ESR_PON}, /* Power on event -500, -599 ch 21.8.13           */
     {-600, -699, ESR_URQ}, /* User Request Event -600, -699 ch 21.8.14       */
@@ -151,17 +185,15 @@
 
     SCPI_ErrorAddInternal(context, err);
 
-    for(i = 0; i < ERROR_DEFS_N; i++) {
+    for (i = 0; i < ERROR_DEFS_N; i++) {
         if ((err <= errs[i].from) && (err >= errs[i].to)) {
             SCPI_RegSetBits(context, SCPI_REG_ESR, errs[i].bit);
         }
     }
 
-    if (context) {
-        if (context->interface && context->interface->error) {
-            context->interface->error(context, err);
-        }
+    SCPI_ErrorEmit(context, err);
 
+    if (context) {
         context->cmd_error = TRUE;
     }
 }
@@ -174,10 +206,20 @@
 const char * SCPI_ErrorTranslate(int16_t err) {
     switch (err) {
         case 0: return "No error";
-        #define X(def, val, str) case def: return str;
-        LIST_OF_ERRORS
-        #undef X        
-        default: return "Unknown error";
+#define X(def, val, str) case def: return str;
+#if USE_FULL_ERROR_LIST
+#define XE X
+#else
+#define XE(def, val, str)
+#endif
+            LIST_OF_ERRORS
+
+#if USE_USER_ERROR_LIST
+                    LIST_OF_USER_ERRORS
+#endif
+#undef X
+#undef XE
+                default: return "Unknown error";
     }
 }
 

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