rlkieth

Replied 21 hours ago

I fixed the problem by declaring the arrays like:

uint8_t xdata crcBytes[4];

and then initializing them before using them:

    for (i = 0; i < 4; i++)
    {
        crcBytes[i] = 0;
    }

if you set the correct xdata size in startup this is not needed

. It steps through the configurator code and the line to make the LED turn on, but the LED stays glowing faintly in its intermediate state.

just blinking faster than the eye can follow.

that is not normal for blinky, seems that you have soma oscillator/timer settings off, try working thm out with paper and datasheet.do not reky on a perfect configurator

methinks your 'problem' is lookingh for gets(), there are many SD card interface codes out there e.g. 
https://www.renesas.com/us/en/doc/DocumentServer/026/U19048EU1V0AN00.pdf

which I forund with a google search on

https://www.renesas.com/us/en/doc/DocumentServer/026/U19048EU1V0AN00.pdf

none of those I saw hjas gets() but other means of fetching/writing dta

SiLabs not present function gets().

it would never be SiLabs, it would be Keil, IAR or SDCC

anyhow no '51 toolset I know of provide the C file functions

also note running at VDD(min) gives awfully small noise margins.

I have, at 2 occasion, as a consultant, concluded that in the environment the circuit was in the noise margin at Vdd(min0 was insufficient and raising Vdd took care of the problems

If you are at Vdd)min) and your power supply is not perfect, you will find some units (those that actuallly Vdd min is a min (yhere is a tolerance)  qwill fail.  the case I remember about 5% unit failed.

I understand that there may be power savings concerns, but is it worth the risk?

As far as I understand, this would lead to the same result like pulsing the RST pin, right?\\nope, rst would restart from 0, cofiig pulse would restart for where you went to sleep.

I hav not done this in a lomg while VERIFY the above by the datasheet

also note running at VDD(min) gives awfully small noise margins.

I have, at 2 occasion, as a consultant, concluded that in the environment the circuit was in the noise margin at Vdd(min0 was insufficient and raising Vdd took care of the problems