TMDSRM48HDK: Using RTP and DMM pins GIO functionality

Ivan Spasic

Part Number: TMDSRM48HDK
Other Parts Discussed in Thread: HALCOGEN

Hello,

I need help whith using DMM's and RTP's GIO functionality.
What exactly do I have to do to initialize DMM or RTP pins for GIO, beside configuring pins in the HALcogen,
do I need to enable RTP and DMM driver in HALcogen ?
And, for example, I want to configure DMM_SYNC to output and I want to set it to value 1. I know that I need to address
DMM port register, but where can I see where DMM_SYNC bit in dmmPORT is located ?

gioSetDirection(dmmPORT, 1 << DMM_SYNC_PIN);    //I have no idea DMM_SYNC_PIN value
gioSetBit(dmmPORT, DMM_SYNC_PIN, 1);

Thanks.

over 4 years ago

0 Frank Livingston over 4 years ago

TI__Mastermind 30108 points

Hi, our expert is out of office until 4/7. Please expect a delayed response.
Also, please see this FAQ: software-dl.ti.com/.../index.html

0 Ivan Spasic over 4 years ago in reply to Frank Livingston

Prodigy 30 points

Haven't found anything about using DMM or RTP GIO ports in this FAQ. Some example could be useful...

0 QJ Wang over 4 years ago in reply to Ivan Spasic

TI__Guru**** 200246 points

Hi Ivan,

1. Enable DMM and RTP:

2. Config DMM pins and RTP pins as GIO pins and as output:

3. Use GIO APIs to configure the direction and write data to data register:

config SYNC pin (bit 0 of the register PC0) as OUTPUT:

gioSetDirection(dmmPORT, 0x00000001);

Toggle SYNC pin:

gioToggleBit(dmmPORT, 0);

0 Ivan Spasic over 4 years ago in reply to QJ Wang

Prodigy 30 points

Thanks QJ Wang, this cleared my understanding of GIO ports.
In short, pin control registers PC0-7 are mapped to gioPORT_t registers (DIR, DIN, DOUT, DSET, DCLR, PDR, PULDIS, PSL).

0 QJ Wang over 4 years ago in reply to Ivan Spasic

TI__Guru**** 200246 points

The DMM PC0~PC7 are mapped to dmmPORT_t rather than gioPORT_t. Since PC0~PC7 have same definition for all the modules, we can use GIO APIs .

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TMDSRM48HDK: Using RTP and DMM pins GIO functionality