PROCESSOR-SDK-AM64X: SDK example to measure the on-die temperature through VTM?

François,

I've attached a Linux script to read and print the temp sensors. Also as an alternative here is the couple memory writes and reads with a description in case it is simpler to use or port to the preferred environment and put the printouts in the xls.

#To set WKUP_VTM_MISC_CTRL2 registers for the 2 VTMs to continuous mode:

devmem2 0x00b01300 w 0x00000050

devmem2 0x00b01320 w 0x00000050

#Then to read the value from WKUP_VTM_TMPSENS_STAT registers:

devmem2 0x00b00308

#will print out something like 0x00080154, take only the low 10-bits (0x154)

devmem2 0x00b00328

#will print out something like 0x00080954, take only the low 10-bits (0x154)

# The 10bit output (low 0x3FF bits) needs to fed into the polynomial AM64 TRM 5.2.2.1.4.2.1.1
# to get output in Celcius. Also have it in the Excel sheet AM64x VTM.xlsx.
# On my desk I get <50C . Accuracy is maybe +-10C without characterization.

AM64x VTM.xlsx

am64_vtm_temp.sh

  Pekka