IEC60355_STM8AS_V1.1.0, periodic RAM test error
I'm running
ST library IEC60335 STM8AS v1.1.0 in a STM8S105C6.RAM March X periodic test is failing, I think there is an error in the library.Class B RAM (fromCLASS_B_START=0x10 to CLASS_B_END=0x7F) is checked from TIM4 interrupt by ''ClassBTestStatus STL_TranspMarchX(void)'' function.
Firstly it copies 6 bytes from Class B RAM to RunTimeRamBuf[RT_RAM_BUF_SIZE] @ ''RUN_TIME_RAM_CHCK''. Section RUN_TIME_RAM_CHCK is placed at 0x00-0x0F.
This is the loop that copies 6 bytes from Class B RAM to RunTimeRamBuf:
/* ------------------ Regular memory Self-check ----------------------- */
/*---------------------------- STEP 1 --------------------------------- */
/* Save the content of the 6 bytes to be tested and start MarchC-
Write background with addresses increasing */
p_StartRamBlock
=
p_RunTimeRamChk;
p_EndRamBlock=
p_RunTimeRamChk
+
RT_RAM_BLOCKSIZE;
i=
1u
;
do
{
RunTimeRamBuf[i
++
]
=
*
p_RunTimeRamChk;
*
p_RunTimeRamChk
++
=
BCKGRND;
}
while
(p_RunTimeRamChk
<
p_EndRamBlock);
p_StartRamBlock and p_EndRamBlock are local variables placed at virtual registers (0x80…).
p_RunTimeRamChk is a global variable placed at Class B RAM, my linker places it @0x10. This variable is used in the above loop that copies Class B RAM and then writes BCKGRND (=0) in it, so the loop is writing to the variable that controls the loop. Result: it starts copying 6 bytes from 0x10 to 0x01 and writing 0 from 0x10 to 0x15, but when the loop writes 0 in 0x10 it is writing 0 in p_RunTimeRamChk. The loop copies more than 6 bytes and RAM is corrupted.
Is there an error in this library certified by VDE????
Regards