Prototype
InvBuffer_S32(r)
Description
WriteI32ToBuffer(rBuffer+r, -ReadBufferToI32(rBuffer+r));
Invert the int32 at index r of the buffer.
Return
Nothing
Code Example
The following code example uses the InvBuffer_S32 function to invert the int32 stored in a buffer at index r.
The SMK900.evi file used for this example can be downloaded at the bottom of this page.
/* Example Code
* InvBuffer_S32
*
* get buffer indexes r1
* set buffer in memory
* inv buffer[r1]
* if params used
* return result of inv on 32 bits
* else
* return 0x00 (inv not ok) or 0x01 (inv ok) on 8 bits
*
* example VMExecuteCmd:
* cmd: |r1 |buffer
* 0xfb 0x0e 0x00 0x0c 0x00 0x0e [0x?? 0x?? 0x?? = macAdress] 0x00 0x00 0x21 0x43 0x65 0x87
* rsp: 0xfb 0x08 0x00 0x2d 0x00 0xe1 0x1e 0xdf 0xbc 0x9a 0x78
*/
#include "SMK900.evi"
#define SENSORCODE 0x01
function exec_aircmd(){
local rxLen;
local useParams;
local r1;
local i;
local result;
rxLen=GetAirBuf(0, 0, 20);
if(rxLen>=7){ // 1 byte for paketID + 6 bytes of payload (2 bytes for buffer index and minimum 4 bytes for buffer)
useParams=true;
r1=GetBuffer_16(1);
for(i=3;i<rxLen;i++){
SetBuffer(i-3,GetBuffer_S8(i),1);
}
}else{
useParams=false;
r1=0;
SetBuffer_16(0,0x4321);
SetBuffer_16(2,0x8765);
}
InvBuffer_S32(r1);
if(useParams){
SetBuffer_16(0,GetBuffer_16(r1));
SetBuffer_16(2,GetBuffer_16(r1+2));
Send(4);
}else{
if(GetBuffer_16(r1+2)==0x789a && GetBuffer_16(r1)==0xbcdf){
result = 1;
}else{
result = 0;
}
SetBuffer(4,result,1);
Send(5);
}
}
function main()
{
local execType;
execType = GetExecType();
if(execType==MESHEXECTYPE_AIRCMD_bm){
exec_aircmd();
}
}