I built this a while back and it has worked beautifully for PIC ICs. Today, I had need to reprogram the I2C eeprom for an older model RCA TV. I set the dip switches to S1-4&9 and S2-6&7 with S3 off and I selected 24xx02 in usbpicprog. Autodetect does not see the IC and regardless of what I try to program, the read always returns either all FFs or random data. Has anyone else ever experienced this? usbpicprog version is 0.4.2 - the latest I seem to be able to install on Ubuntu 10.04 from the ppa.
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Have you added pull up resistors as required by i2c?
i am not sure whether 0.4.2 was working well with i2c.
you could compile a later version or upgrade your ubuntu.
frans
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
I built this a while back and it has worked beautifully for PIC ICs. Today, I had need to reprogram the I2C eeprom for an older model RCA TV. I set the dip switches to S1-4&9 and S2-6&7 with S3 off and I selected 24xx02 in usbpicprog. Autodetect does not see the IC and regardless of what I try to program, the read always returns either all FFs or random data. Has anyone else ever experienced this? usbpicprog version is 0.4.2 - the latest I seem to be able to install on Ubuntu 10.04 from the ppa.
Hello,
Have you added pull up resistors as required by i2c?
i am not sure whether 0.4.2 was working well with i2c.
you could compile a later version or upgrade your ubuntu.
frans