Test sequence differences when comparing to UI / MCS-48

frostyfeetfi commented 12 months ago

Step one of MCS-48 test sequence has following entries in closed source UI version:

40: VCC = +5V 26: VDD = +4.2V 25: PROG = +4.2V 7: EA = +4.2V

However, hvepromcmd (in it's step one) has different values for pins 25, 26 and 7:

#define DESC_TEST_MCS48_PON \
    "Connect your multimeter negative (black) probe to pin 20 on the MCU socket.\r\n" \
    "\r\n" \
    "Check the following pins on the MCU socket are within 5% of the specified values: \r\n" \
    "\r\n" \
    "40: VCC   = +5V\r\n" \
    " 7: EA    = +5V\r\n" \
    "25: PROG  = +5V\r\n" \
    "26: VDD   = +5V\r\n"

Measuring quite liberally built MCS-48 prommer, actual voltages are much closer to UI (4.2V).

If this is error in hvepromcmd then using it can lead user to determine that board is faulty.

frostyfeetfi commented 12 months ago

Added pull request for suggested fix. @inaxeon please review and merge if change seems correct. thanks for the great prommers and software!

frostyfeetfi commented 12 months ago

pr merged. closing as fixed.

inaxeon / hvepromcmd

Test sequence differences when comparing to UI / MCS-48 #2