F2837x controlCARD R1.1 GPIO73 (XCLOCKOUT) pinout 140 doesn't work

Mauro Fantina

Hello,

I'm using delfino control board,

I run this code

but I observe NO clock out on pin 140

	EALLOW;
	ClkCfgRegs.CLKSRCCTL3.bit.XCLKOUTSEL = 5;
	ClkCfgRegs.XCLKOUTDIVSEL.bit.XCLKOUTDIV = 3;
	GpioCtrlRegs.GPCGMUX1.bit.GPIO73 = 3;

Can someone help me ??

over 10 years ago

0 Brett Larimore over 10 years ago

TI__Guru 57255 points

Hi Mauro,
Instead of GPCGMUX1, should you be writing to GPCMUX1?

Thank you,
Brett

0 Mauro Fantina over 10 years ago in reply to Brett Larimore

Genius 3800 points

thankyou very much

0 Mauro Fantina over 10 years ago in reply to Mauro Fantina

Genius 3800 points

another question:
I use INOSC1 as source and I NO divide it,
the output frequency is about 9MHz instead nominal of 10MHz (see 64 of SPRS880D –DECEMBER 2013–REVISED JUNE 2015).

I read value in "AnalogSubsysRegs.INTOSC1TRIM.bit.VALFINETRIM" (see 1185 of SPRUHM8D–December 2013–Revised June 2015) and is 0, because this device is eXperimental ???

0 Brett Larimore over 10 years ago in reply to Mauro Fantina

TI__Guru 57255 points

Hi Mauro,

Many C2000 chips (this one included), won't have trims in early revision samples of TMX silicon.

I suspect that your device is probably an early revision (perhaps Rev0 or RevA).

NOTE: As of today, the TMDXCNCD28379D cCARD kit is the only kit that will guarantee that you get a RevC version of the F2837xD.
(F28379D = F28377D + PositionManager)

Thank you,
Brett

0 Mauro Fantina over 10 years ago in reply to Brett Larimore

Genius 3800 points

thankyou, but How is PositionManager ?

0 Brett Larimore over 10 years ago in reply to Mauro Fantina

TI__Guru 57255 points

Hi,

PositionManager is a set of libraries built to run on the F28379D to support several absolute encoder standards - like EnDAT, BiSS, etc. The F28379D enables some extra features in the device so that PositionManager can be used.
http://newscenter.ti.com/2015-11-19-TI-introduces-industrys-first-industrial-drive-control-system-on-chip-SoC-to-support-digital-and-analog-position-sensors

Note that if you don't use those software libraries, the F28379D works just like a F28377D.

EDIT: See the following thread which highlights the minor differences which may effect software...
https://e2e.ti.com/support/microcontrollers/c2000/f/171/p/482632/1739457#1739457

Thank you,
Brett

0 Mauro Fantina over 10 years ago in reply to Mauro Fantina

Genius 3800 points

and this INTOSC12 calibration values are set in the boot ?

0 Brett Larimore over 10 years ago in reply to Mauro Fantina

TI__Guru 57255 points

The INTOSC trims should be populated in those RevC based controlCARDs.

0 Mauro Fantina over 10 years ago in reply to Brett Larimore

Genius 3800 points

At which location of OTP I find INTOSC trim value ?

0 Mauro Fantina over 10 years ago in reply to Mauro Fantina

Genius 3800 points

I find my answer on spruhm8e.pdf page 528

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F2837x controlCARD R1.1 GPIO73 (XCLOCKOUT) pinout 140 doesn't work