4ba7b49cdd
0x97 allows for detection of all 1-3 bit errors in a message of up to 119 bytes (see https://www.faa.gov/aircraft/air_cert/design_approvals/air_software/media/TC-14-49.pdf)
101 lines
2.7 KiB
C
101 lines
2.7 KiB
C
/****************************************************************************
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* This file is part of the project AqHome.
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* AqHome (c) by 2023 Martin Preuss, all rights reserved.
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*
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* The license for this file can be found in the file COPYING which you
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* should have received along with this file.
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****************************************************************************/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include "aqhome/msg/msg_value.h"
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#include <gwenhywfar/misc.h>
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#include <gwenhywfar/list.h>
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#include <gwenhywfar/error.h>
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#include <gwenhywfar/debug.h>
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uint32_t AQH_ValueMsg_GetTimestamp(const GWEN_MSG *msg)
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{
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return AQH_NodeMsg_GetUint32At(msg, AQH_MSG_OFFS_ALL_DATA_BEGIN+AQH_MSG_OFFS_VALUE_TIMESTAMP, 0);
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}
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uint8_t AQH_ValueMsg_GetValueId(const GWEN_MSG *msg)
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{
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return AQH_NodeMsg_GetUint8At(msg, AQH_MSG_OFFS_ALL_DATA_BEGIN+AQH_MSG_OFFS_VALUE_VALUEID, 0);
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}
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uint8_t AQH_ValueMsg_GetValueType(const GWEN_MSG *msg)
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{
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return AQH_NodeMsg_GetUint8At(msg, AQH_MSG_OFFS_ALL_DATA_BEGIN+AQH_MSG_OFFS_VALUE_VALUETYPE, 0);
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}
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const char *AQH_ValueMsg_GetValueTypeName(const GWEN_MSG *msg)
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{
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uint8_t t;
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t=AQH_ValueMsg_GetValueType(msg);
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switch(t) {
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case AQH_MSG_VALUE_TYPE_TEMP: return "temperature";
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case AQH_MSG_VALUE_TYPE_HUMIDITY: return "humidity";
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default: break;
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}
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return "unknown";
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}
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double AQH_ValueMsg_GetValue(const GWEN_MSG *msg)
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{
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if ((AQH_NodeMsg_GetMsgType(msg)==AQH_MSG_TYPE_VALUE) &&
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(GWEN_Msg_GetBytesInBuffer(msg)>=AQH_MSG_VALUE_MINSIZE)) {
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const uint8_t *ptr;
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double value;
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double denom;
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uint16_t intDenom;
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ptr=GWEN_Msg_GetConstBuffer(msg)+AQH_MSG_OFFS_ALL_DATA_BEGIN;
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value=(double)((ptr[AQH_MSG_OFFS_VALUE_VALUE])+(ptr[AQH_MSG_OFFS_VALUE_VALUE+1]<<8));
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intDenom=(ptr[AQH_MSG_OFFS_VALUE_DENOM])+(ptr[AQH_MSG_OFFS_VALUE_DENOM+1]<<8);
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denom=(double)(intDenom);
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if (intDenom==0)
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denom=1.0;
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return (double)(value/denom);
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}
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return 0.0;
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}
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void AQH_ValueMsg_DumpToBuffer(const GWEN_MSG *msg, GWEN_BUFFER *dbuf, const char *sText)
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{
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if ((AQH_NodeMsg_GetMsgType(msg)==AQH_MSG_TYPE_VALUE) &&
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(GWEN_Msg_GetBytesInBuffer(msg)>=AQH_MSG_VALUE_MINSIZE)) {
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GWEN_Buffer_AppendArgs(dbuf, "0x%02x->0x%02x: VALUE %s (timestamp=0x%08x, value_id=0x%02x type=%s value=%f)\n",
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AQH_NodeMsg_GetSourceAddress(msg),
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AQH_NodeMsg_GetDestAddress(msg),
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sText,
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(unsigned int) AQH_ValueMsg_GetTimestamp(msg),
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AQH_ValueMsg_GetValueId(msg),
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AQH_ValueMsg_GetValueTypeName(msg),
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AQH_ValueMsg_GetValue(msg));
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}
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}
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