diff --git a/sysmoOCTSIM/hal/utils/include/err_codes.h b/sysmoOCTSIM/hal/utils/include/err_codes.h
new file mode 100644
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+++ b/sysmoOCTSIM/hal/utils/include/err_codes.h
@@ -0,0 +1,73 @@
+/**
+ * \file
+ *
+ * \brief Error code definitions.
+ *
+ * This file defines various status codes returned by functions,
+ * indicating success or failure as well as what kind of failure.
+ *
+ * Copyright (c) 2015-2018 Microchip Technology Inc. and its subsidiaries.
+ *
+ * \asf_license_start
+ *
+ * \page License
+ *
+ * Subject to your compliance with these terms, you may use Microchip
+ * software and any derivatives exclusively with Microchip products.
+ * It is your responsibility to comply with third party license terms applicable
+ * to your use of third party software (including open source software) that
+ * may accompany Microchip software.
+ *
+ * THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES,
+ * WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE,
+ * INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY,
+ * AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT WILL MICROCHIP BE
+ * LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, INCIDENTAL OR CONSEQUENTIAL
+ * LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND WHATSOEVER RELATED TO THE
+ * SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS BEEN ADVISED OF THE
+ * POSSIBILITY OR THE DAMAGES ARE FORESEEABLE.  TO THE FULLEST EXTENT
+ * ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN ANY WAY
+ * RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY,
+ * THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE.
+ *
+ * \asf_license_stop
+ *
+ */
+
+#ifndef ERROR_CODES_H_INCLUDED
+#define ERROR_CODES_H_INCLUDED
+
+#define ERR_NONE 0
+#define ERR_INVALID_DATA -1
+#define ERR_NO_CHANGE -2
+#define ERR_ABORTED -3
+#define ERR_BUSY -4
+#define ERR_SUSPEND -5
+#define ERR_IO -6
+#define ERR_REQ_FLUSHED -7
+#define ERR_TIMEOUT -8
+#define ERR_BAD_DATA -9
+#define ERR_NOT_FOUND -10
+#define ERR_UNSUPPORTED_DEV -11
+#define ERR_NO_MEMORY -12
+#define ERR_INVALID_ARG -13
+#define ERR_BAD_ADDRESS -14
+#define ERR_BAD_FORMAT -15
+#define ERR_BAD_FRQ -16
+#define ERR_DENIED -17
+#define ERR_ALREADY_INITIALIZED -18
+#define ERR_OVERFLOW -19
+#define ERR_NOT_INITIALIZED -20
+#define ERR_SAMPLERATE_UNAVAILABLE -21
+#define ERR_RESOLUTION_UNAVAILABLE -22
+#define ERR_BAUDRATE_UNAVAILABLE -23
+#define ERR_PACKET_COLLISION -24
+#define ERR_PROTOCOL -25
+#define ERR_PIN_MUX_INVALID -26
+#define ERR_UNSUPPORTED_OP -27
+#define ERR_NO_RESOURCE -28
+#define ERR_NOT_READY -29
+#define ERR_FAILURE -30
+#define ERR_WRONG_LENGTH -31
+
+#endif