CCS/LAUNCHXL-F28379D: SCI-UART Pin

amin

Expert 1985 points

Part Number: LAUNCHXL-F28379D
Other Parts Discussed in Thread: CONTROLSUITE, , C2000WARE

Tool/software: Code Composer Studio

Hello,

With this setting, the SCI-uart data is sent through the USB connector via the FTDI chip,

	GpioCtrlRegs.GPBMUX1.bit.GPIO44 = 3;
	GpioCtrlRegs.GPBMUX1.bit.GPIO43 = 3;
	GpioCtrlRegs.GPBGMUX1.bit.GPIO44 = 3;
	GpioCtrlRegs.GPBGMUX1.bit.GPIO43 = 3;

How can I use other free pins on the board for send data? (for example send data through the SCIC or SCIB port)

Thank you.

Regards,

Amin

over 6 years ago

0 Gautam Iyer over 6 years ago

Guru 192875 points

Hi Amin,

amin said:
How can I use other free pins on the board for send data? (for example send data through the SCIC or SCIB port)

Simply refer the schematics for the board present here: C:\ti\controlSUITE\development_kits\LAUNCHXL-F28379D\HwDevPkg

You can tap GPIO19 & GPIO18 for SCIB and GPIO139 & GPIO56 for SCIC modules. You'll have to follow the muxing scheme similar to GPIO42 and GPIO43 for SCIA.

Regards,

Gautam

0 amin over 6 years ago in reply to Gautam Iyer

Expert 1985 points

Hi Gautam,

Thanks for your help. This code does not work with new conditions for SCIB:
GpioCtrlRegs.GPBMUX1.bit.GPIO18 = 3;
GpioCtrlRegs.GPBMUX1.bit.GPIO19 = 3;
GpioCtrlRegs.GPBGMUX1.bit.GPIO18 = 3;
GpioCtrlRegs.GPBGMUX1.bit.GPIO19 = 3;

Regards,
Amin

0 Gautam Iyer over 6 years ago in reply to amin

Guru 192875 points

amin said:
Thanks for your help. This code does not work with new conditions for SCIB:

Its very surprising that you're not referring the device datasheet for Muxing values:

Regards,

Gautam

0 amin over 6 years ago in reply to Gautam Iyer

Expert 1985 points

This code does not work based on MUX POSITION:2 and SCIB, please give me an example code.
Thanks for your help.

Regards,
Amin

0 Gautam Iyer over 6 years ago in reply to amin

Guru 192875 points

Amin, please download controlSuite/C2000ware and navigate to these locations for example code: There are 3 SCI based examples and I'm linking only one here.

C:\ti\c2000\C2000Ware_1_00_01_00\device_support\f2837xd\examples\cpu1\sci_echoback\cpu01

OR

C:\ti\controlSUITE\device_support\F2837xD\v210\F2837xD_examples_Cpu1\sci_echoback

Regards,
Gautam

0 amin over 6 years ago in reply to Gautam Iyer

Expert 1985 points

I have seen these examples. My problem is changing the pins.
In this three examples, the connection is via the FTDI port(SCIA).
Regards,
Amin

0 Sal Pezzino over 6 years ago in reply to amin

TI__Mastermind 32995 points

Hi Amin,

Only 42/43 are muxed to the FTDI chip. For other SCI pins which are pinned out on the Launchpad, you will have to connect to them via jumpers and some other connections.

Here is an example: www.amazon.com/.../B008AGDTA4

sal

0 amin over 6 years ago in reply to Sal Pezzino

Expert 1985 points

Hi Sal,
Thank you. I have a TTL converter. My goal is change the 42/43 pins to GPIO19 & GPIO18 for SCIB. My problem is changing this pins.
Regards,
Amin

0 Sal Pezzino over 6 years ago in reply to amin

TI__Mastermind 32995 points

What is the problem? As long as these are pinned out on the board, you should not have a problem as long as you modify the software to configure these GPIOs for SCI communication and configure the correct SCI module.

What are you having trouble with?

sal

0 amin over 6 years ago in reply to Sal Pezzino

Expert 1985 points

I need a code for define GPIO19 & GPIO18 (SCIB) to send data instead of this code:

GpioCtrlRegs.GPBMUX1.bit.GPIO44 = 3;

GpioCtrlRegs.GPBMUX1.bit.GPIO43 = 3;

GpioCtrlRegs.GPBGMUX1.bit.GPIO44 = 3;

GpioCtrlRegs.GPBGMUX1.bit.GPIO43 = 3;

Regards,
Amin

0 Sal Pezzino over 6 years ago in reply to amin

TI__Mastermind 32995 points

Amin,

This is fairly simple. You can modify the example code you are looking at. Or you can look at the driverlib examples in C2000Ware. These SCI examples will give you a great place to start.

sal

0 amin over 6 years ago in reply to Sal Pezzino

Expert 1985 points

I've seen all the examples but the connection of all through the onboard FTDI chip(Gpio 43/44).
Thanks for your help.
Amin

0 Sal Pezzino over 6 years ago in reply to amin

TI__Mastermind 32995 points

You can just modify the software.

Modifying the driver software will be easier. Use whatever GPIOs you want.

sal

0 Sal Pezzino over 6 years ago in reply to Sal Pezzino

TI__Mastermind 32995 points

Please start with the driverlib examples which use sci.h and sci.c

sal

0 amin over 6 years ago in reply to Gautam Iyer

Expert 1985 points

Hi Gautam,

Thanks for your best help.

Regards,
Amin

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CCS/LAUNCHXL-F28379D: SCI-UART Pin