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Forum Index : Microcontroller and PC projects : (DM MM) Trapping Hardware Errors MMBas

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DuinoMiteMegaAn
Senior Member

Joined: 17/11/2011
Location: Australia
Posts: 231

Posted: 03:34pm 01 Dec 2011

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(DM MM) Trapping Hardware Errors in MMBasic.

Under command "OPTION ERROR" you have two parameters of "ABORT" and "CONTINUE"
This applies ONLY for reading and writing from a SD card. <-----<<<<

Lets say you have I2C RTC basic code and the I2C device is missing.
How do you trap on this error to prevent a program halt?

Code example

120 I2Caddr = &h68
130 I2CEN 100,100
140 I2CRCV I2Caddr, 0, 8, RTCbuff(0), 1, 0
150 I2CDIS

Having the I2C device missing (not connected) will halt/abort program execution with
the following error which halts program execution.

Error Line 140: Receive variable not found.

I need to trap this error BEFORE this halts program execution ... any suggestions?

DuinoMiteMegaAn
Senior Member

Joined: 17/11/2011
Location: Australia
Posts: 231

Posted: 04:44pm 05 Dec 2011

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Trapping errors revisited ...

The "Error Line 140: Receive variable not found" was
caused by not having a DIM RTCBuff(8) assigned.
The I2C should have timed-out and I could have used
"? "0=ok 1=nack 2=timeout"; MM.I2C" to pick up the I2C error.

Edited by DuinoMiteMegaAn 2011-12-07

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