Touch

Forum Post: RE: Tcs 2046 interfacing with launchpad

MaciejKucia — Fri, 17 May 2013 07:53:00 GMT

Pradeep,

I am afraid that there are no direct examples for TSC2046 and MSP430 as far as I know.

What we can offer you here are some guidelines where to look and ho to start.

According to device datasheet (http://www.ti.com/lit/ds/symlink/tsc2046.pdf) it uses simple SPI interface. I recommend focusing on 3-wire mode. You pull CS (chip select) low and connect 3 signals to your MCU: clock, data in and data out.

You can find numerous examples on setting up SPI with MSP430 Launchpad but I recommend looking into examples from MSP430Ware. If you have CCSv5 you probably already have it. Just press View --> TI Resource Explorer --> MSP430ware --> Devices --> MSP430G2xx --> Code Examples --> MSP430G2x53. You will find there sample SPI projects msp430g2xx3_uscia0_spi_09, msp430g2xx3_uscia0_spi_10.

If you will have troubles setting your SPI you can always use Grace.

TSC2046 datasheet is your best friend here. You will find control byte description there as well as other information related to data format.

This thread might be useful http://e2e.ti.com/support/microcontrollers/msp430/f/166/t/102458.aspx

Regards,
Maciej

Forum Post: RE: DRV2605 detail documentation..

LeonardEllis — Thu, 16 May 2013 11:55:00 GMT

Hello Guenther,

I'll check to see why the link is not working; in the meantime, I have sent via direct email the form, please fill it out and return it via email.

-Leonard

Forum Post: RE: TSC2046E linux device driver code.

James.Ang — Thu, 16 May 2013 03:13:00 GMT

Hi Wendy,

I would also like to try out the TSC2046E chip to replace the ADS7846.

Can you send me the driver to my email address: angweiyang {at} gmail {dot} com

Many thanks in adv.

James Ang

Forum Post: RE: DRV2603 pinout

Des Richards1 — Wed, 15 May 2013 08:13:00 GMT

Hi Brian,

The full data sheet has arrived today,Thanks for your help.

For anyone else the pinout is

1 EN 6 OUT+

2 PWM 7 VDD

3 LRA/Not ERM 8 GND

4 NC 9 OUT-

5 GND 10 GND

Des

Forum Post: equivalent driver

Iragouda Patil1 — Wed, 15 May 2013 03:54:00 GMT

i am looking for quad/dual/single channel high side driver ,that driver is eqivalent to LMD18400,and logic input/output must be 3.3v operation,

Can any suggest part number .

Regards

Patil

Forum Post: RE: Full data sheet DRV2604

Stepan Boltalin — Fri, 10 May 2013 21:26:00 GMT

just re-applied.

Forum Post: TSC2006EVM

RandyStevens — Fri, 10 May 2013 13:58:00 GMT

We are a contract manufacturer developing a LabView test program for a product using the TSC2006. We have the EVM up and running just fine. However, the LabView app is not programmatically callable from our main program to return the readings for our test record. We just want to set a configuration and take some X, Y, and AUX readings on a Touch. Is the TSC2006EVM.exe available as a shared library or in LabView sources?

Forum Post: RE: What is 'Audio to Haptic' in DRV2605?

L Dhakshna moorthy — Sat, 04 May 2013 13:54:00 GMT

Brian,

Thanks for reply. You have been helpful.

Best Regards,

Jituprakash

Forum Post: RE: Driving ERM using DRV2603 haptic driver

Brian Burk — Fri, 03 May 2013 17:43:00 GMT

Hazrin,

The DRV2603 has two pins that need to be controlled by an external microcontroller or processor.

EN - the enable pin requires a GPIO control so that you can enable and disable the part
PWM - the PWM controls the output amplitude by varying the duty-cycle from 0-100%. A lot of microcontrollers have dedicated PWM ports which allow you to set the duty cycle. Take a look at the MSP430G2553 microcontroller and see how the DRV2603EVM-CT uses it to control the duty-cycle.

The overdrive and braking are automatic only for LRA actuators. For ERM overdrive, the maximum output is 3V so if your actuator is rated at 3V than there can be no overdrive. For ERM braking, simply make the voltage negative and the motor will brake.

I would suggest taking a look at the DRV2604 and DRV2605 which have automatic overdrive and braking for ERMs and I2C control.

Thanks,
Brian

Forum Post: RE: Need clarification on DRV2605 please!

Robert McCooey — Tue, 23 Apr 2013 00:16:00 GMT

Brian,

I don't see a link to download the firmware for the MSP430?

Thanks

Robert...

Forum Post: RE: How to build a board with few DRV2603 on it?

Brian Burk — Fri, 19 Apr 2013 18:09:00 GMT

Toso,

Thanks for looking at the DRV2603. Here are my recommendations:

The DRV2603 requires a GPIO and PWM pin to operate. If you need to operate 10-20 DRV2603, makes sure both of these pins are available for each device.
For layout, I would recommend starting with the DRV2603EVM-CT. You can find a schematic and layout reference design at the end of the User's Guide.
For MSP430 (uController) software the DRV2603EVM-CT has software that can be downloaded from the evaluation kit product page. See TI.com.

Thanks,
Brian

Forum Post: RE: Full Datasheet for DRV2603

Brian Burk — Tue, 16 Apr 2013 18:34:00 GMT

Chris,

Thanks for the inquiry. This issue was closed offline.

Thanks,
Brian

Forum Post: RE: Multitouch Controller TSC2020

Wendy Fang — Fri, 12 Apr 2013 20:19:00 GMT

Hi Joemir,

There are several places that could effect TSC2020 touch data throughout rate --

(1) TSC2020 touch data converting speed: The more the scanned channels are, the slower a full panel scan needs to be. However, TSC2020's ADC speed is very high for touch applications and also, as I mentioned before, we had used a TSC2020 to control a 12x20 panel with very reasonable response speed. I may calculate the touch data throughout rate specifically for your system if you provide me the TSC2020 setup values.

(2) TSC2020 and host processor interface speed: it can be the main reason because: the more touches on the touch panel, the more touch data have to be moved from the TSC to the host. Does the host read data length depends on the number of touches? What is your I2C speed mode?

(3) At any time moment, if there are 4 simultaneous touches that forms a straight-rectangle, the data reading from the corresponding 4 segments will be outside their ranges, as described in the email I sent to you this morning. If the host processor simply throw away such data, there will be no response during the period, and results in slower response.

Hope the above helps and please feel free to ask as you need!

Best regards,
Wendy F.

Forum Post: RE: How to measure the acceleration of the ERM/LRA on the DRV2605 evalutaion module?

Brian Burk — Thu, 11 Apr 2013 04:51:00 GMT

Nancy,

To measure acceleration, I would use an off the shelf accelerometer with 3-16G range of acceleration. Here is a link to an accelerometer from SparkFun.

https://www.sparkfun.com/products/9269

Thanks,
Brian

Forum Post: RE: AD7843 and auxiliary inputs

David Montoya — Tue, 09 Apr 2013 12:05:00 GMT

Solution is to use HWMON system in Linux.

ADS7856 driver has addtional interfaces in HWMON. in /sys file system it creates 2 files in0_input and in1_input. They contains the values.

Forum Post: RE: How to obtain the full datasheet and specification for the DRV2665?

Brian Burk — Mon, 01 Apr 2013 19:50:00 GMT

Steve,

I apologize for missing this post. Please take a look at our new device called the DRV2667 which has all the functionality of the DRV2665, plus RAM for waveform storage and a waveform generator.

The DRV2665 was specifically made to support Immersion's Haptic software. If you are interested, please contact your local TI sales for more information.

Thanks,
Brian

Forum Post: RE: DRV2605 breakout board?

Brian Burk — Mon, 01 Apr 2013 19:33:00 GMT

Diane,

Take a look at the DRV2605EVM-CT Evaluation Kit on TI.com under DRV2605. It includes a MSP430G2553 (micro), DRV2605, capacitive touch buttons, and an ERM & LRA actuator. There are also provisions to connect it to an external controller if you desire.

The source code for the board is also available on TI.com.

Thanks,
Brian

Forum Post: RE: question on DRV2605 PWM Input?

Nancy Xiong — Thu, 28 Mar 2013 16:30:00 GMT

Hi Brian,

Thank you very much for your quick response. It helps a lot!!!

Best regards,

Nancy

Forum Post: RE: 'Pin Functions' of DRV2605?

L Dhakshna moorthy — Sat, 23 Mar 2013 01:31:00 GMT

Dear Brian,

Thank you for the suggestion.

Forum Post: RE: DRV2603EVM -CT Problem

Xueqing Zhang — Thu, 14 Mar 2013 11:37:00 GMT

Brian,

Thanks so much. It works now.

Just find out that the SBW connector is too easy to break. Mine is a little broken.

many thanks

xueqing