TM4C123GH6PMI in Tiva C Series Launchpad Silicon Revision

Fernando Liozzi

Intellectual 370 points

Hello, I have a board with the microcontroller Tiva TM4C123GH6PMI, but does not clarify the silicon review.

At the top of the CI he says:

Line 1: 980 YF

Line 2: TM4C123G

Line 3: 41AXE8W

Line 4; G4 (underlined)

The board is EX-TM4C123GXL Rev A

I'm using Keil 5.16a. And the latest libraries TivaWare the date of writing this question (TivaWare_C_Series-2.1.0.12573).

#define TARGET_IS_TM4C123_RB1 ?????? Is this correct?, or should use TARGET_IS_BLIZZARD_RB1
#include "driverlib/rom.h"
#include "driverlib/rom_map.h"

Thanks!

over 9 years ago

0 Markel Robregado over 9 years ago

Guru 86745 points

Hi,

TARGET_IS_BLIZZARD_RB1

You can check this by looking at the Preprocessor Symbols at one of the example programs for Tiva Launchpad.

- kel

0 Amit Ashara over 9 years ago

TI__Guru**** 244400 points

Hello Fernando,

Another way to know the same is to connect and read the address 0x400FE000. The value returned there in bits 15:0 will give the revision/

Regards
Amit

0 Fernando Liozzi over 9 years ago in reply to Amit Ashara

Intellectual 370 points

Hi, thaks for the response, my register value is : in dec: 402981121 and in hex is: 0x18050101.
For read this value, i define:
#define reg (*(volatile unsigned long *)0x400FE000)
And later only print this value in LCD:
Nokia5110_OutU32Dec(reg);

how to interpret the revision number?
Thanks!

0 Fernando Liozzi over 9 years ago in reply to Markel Robregado

Intellectual 370 points

Hi, thanks for reply!
I tried it with that value and not notice the difference from: TARGET_IS_TM4C123_RB1.
What is the difference?
Thanks!

0 Amit Ashara over 9 years ago in reply to Fernando Liozzi

TI__Guru**** 244400 points

Hello Fernando

It is given in the data sheet on how to read DID0 register. the last 16 bits 0101 would mean B1. The upper 8 bits is for major revision A or B with the values 0x00-- or 0x01--. The lower 8 bits is for minor revision, 0x--00 for 0, 0x--01 for 1, 0x--02 for 2 and so on.

Regards
Amit

0 Fernando Liozzi over 9 years ago in reply to Amit Ashara

Intellectual 370 points

Ok, Thanks! (p. 238 datasheet-SPMS376E)
Base: 0x400F.E000
Offset: 0x000
Value: R_001_RSVD-00000101-00000001-00000001
That mean:
VER: 0x1: Second version of the DID0 register format.
CLASS: 0x05 Tiva™ TM4C123x microcontrollers.
MAJOR: 0x1 Revision B (first base layer revision)
MINOR: 0x1 First metal layer change.

Then the silicon review is: B1 and Class is TM4C123. Therefore: "#defineTARGET_IS_TM4C123_RB1" is the correct choise.

What mean BLIZZARD in TARGET_IS_BLIZZARD_RB1?

0 Amit Ashara over 9 years ago in reply to Fernando Liozzi

TI__Guru**** 244400 points

Hello Fernando,

Blizzard was the name used for TM4C123 device before the nomenclature of TM4C123.

Regards
Amit

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TM4C123GH6PMI in Tiva C Series Launchpad Silicon Revision