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LPC2138 I2C

Hi,

I am still using the LPC2138 ;). Now I have a problem with I2C. When I try to send some bytes to an EEPROM device, the following happens:

- I2C start condition is made

- interrupt is generated

- I2C address is sent

- EEPROM device gives an ACK

And now nothing happens. If I look at the I2C bus state, the microcontroller accepted the ACK. However, no new interrupt is given due to a bus state change. The SI bit is high in the control register.

Should I continuously receive interrupts when the SI bit is set? If so, maybe at a higher level the interrupt is turned off. Any other ideas?

TIA, Frank

Reply to
Frank van Eijkelenburg
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It is working now. The main problem was in my generic interrupt handling code. After changing the generic interrupt handling, everything worked fine.

Reply to
Frank van Eijkelenburg

Thanks for the follow-up. I assume it was a fairly simple software bug, not some lurking inconsistency in the way the LPC2138 works?

Eric

Reply to
emeb

Yes, it was a software bug in the code I use. The LPC2138 was working correctly.

Frank

Reply to
Frank van Eijkelenburg

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