TSC2007 - read x,y,z1,z2

Marco Crivellari

Other Parts Discussed in Thread: TSC2007

Hi all.

I've got a strange issue regarding the reading process of TSC2007 over x,y,z1 and z2.

The I2C is correct configured (I'm using TI API over TIVAC129) so the single read for example on X ccordinate works fine.

But when I introduce the read of the other sample it seems like the read sample are shifted by one position, e.g.:

my task periodically read : x z1 z2 y

but, when I touch over the panel it seems that the sequence is: y, x, z1, z2

Do you have any suggestion?

Thanks in advance

over 8 years ago

0 Andy Liu (BMS) over 8 years ago

TI__Guru 52115 points

Hi Marco,

How did you make sure you got (y, x, z1, z2) when you actually wanted to read (x z1 z2 y)?

The TSC2007 is a command based TSC device, which means it operates completely under the control or command of the host processor. Basically, you get what you just want.

If you really think you get the data in a wrong sequence, try to capture the i2c communication waveforms by a digital analyser and double check what the command is sent to the TSC2007.

Andy

0 Andy Liu (BMS) over 8 years ago

TI__Guru 52115 points

Hi Marco,

Besides, I have posted a reference firmware for TSC2007.

Here it is: e2e.ti.com/.../3137.reference-firmware-for-tsc2007

Andy

0 Marco Crivellari over 8 years ago in reply to Andy Liu (BMS)

Intellectual 985 points

Hi Andy.

Thank you, I'll take a look to your firmware.

Regards,
M

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TSC2007 - read x,y,z1,z2