DS90UB954-Q1: GPIO programming

Omri16467

Prodigy 30 points

Part Number: DS90UB954-Q1
Other Parts Discussed in Thread: DS90UB953-Q1,

Hi,

I'm using DS90UB954-Q1 EVM with DS90UB953-Q1 EVM with LaunchPAD v1.57.0010 .

My goal is to have 2 inputs and 2 outputs (GPIO0, 1, 2,3 on RX PORT 0) regardless the video transferring.

I configure the registers as follow:

B954 -

0x000C 0x83 RX_PORT_CTL
0x000D 0x09 IO_CTL
0x000E 0x08 GPIO_PIN_STS
0x000F 0x0C GPIO_INPUT_CTL
0x0010 0x01 GPIO0_PIN_CTL
0x0011 0x21 GPIO1_PIN_CTL
0x0012 0x00 GPIO2_PIN_CTL
0x0013 0x00 GPIO3_PIN_CTL

B953 -

0x000D 0xF0 LOCAL_GPIO_DATA
0x000E 0xC3 GPIO_INPUT_CTRL

What am I missing?

Omri.

over 6 years ago

0 Hamzeh Jaradat over 6 years ago

TI__Guru** 107670 points

Hello Omri,

To set GPIO 0 & 1 as outputs on the DES write,
on 954:
0x4C = 0x01
0x0F = 0x7C
0x10 = 0x01
0x11 = 0x21
0x59 = 0x02

on 953:
0x0E = 0xC3
0x33 = 0x06

To set GPIO 2 & 3 as Inputs on the DES write,
on 954:
0x4C = 0x01
0x6F = 0x32

on 953:
0x0D = 0x00

0 Omri16467 over 6 years ago in reply to Hamzeh Jaradat

Prodigy 30 points

Hi Hamzeh,

With the above configuration I'm able to use GPIO 0 and 1 as outputs on the 954.

But GPIO 2 and 3 doesn't work.

Any suggestions?

Omri.

0 Hamzeh Jaradat over 6 years ago in reply to Omri16467

TI__Guru** 107670 points

Hello Omri,

okay then try these configs pls:

on 954:
0x4C = 0x01
0x0F = 0x7F
0x6F = 0x32

on 953:
0x0D = 0xF0
0x0E = 0xC3

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DS90UB954-Q1: GPIO programming