Resolved. My primary problem was that the capacitive touch feature needed to be turned On with this line:
wr16(REG_TOUCH_CONFIG + RAM_REG, 0x5d0); //Capacitive touch screen on
More information can be seen here:
viewtopic.php?f=45&t=6966
Search found 8 matches
- Wed May 11, 2022 10:05 am
- Forum: EVE2 & EVE3 & EVE4 SPI TFT's
- Topic: Basic Arduino Touch Demo
- Replies: 1
- Views: 7042
- Wed May 11, 2022 10:02 am
- Forum: EVE2 & EVE3 & EVE4 SPI TFT's
- Topic: Arduino Touchscreen Calibration
- Replies: 1
- Views: 7100
Re: Arduino Touchscreen Calibration
I was able to resolve this problem. Here is what works with the EVE-Demo-Arduino and the added lines for calibration: void setup() //run once, setup { GlobalInit(); //EVE display interface initialization FT81x_Init(); //Reset and initialize the EVE wr8(REG_PWM_DUTY + RAM_REG,128); //Set the backligh...
- Tue May 10, 2022 12:58 pm
- Forum: EVE2 & EVE3 & EVE4 SPI TFT's
- Topic: Arduino Touchscreen Calibration
- Replies: 1
- Views: 7100
Arduino Touchscreen Calibration
I am using an EVE4 Capacitive touch, 7" screen. Is there an Arduino example program showing how to do the touchscreen calibration? I cannot get the touch function to work at all, and maybe this is the problem. I see in the Programming Guide, page 158 that I need to use: cmd_dlstart(); cmd(CLEAR...
- Mon May 09, 2022 4:26 pm
- Forum: EVE2 & EVE3 & EVE4 SPI TFT's
- Topic: Basic Arduino Touch Demo
- Replies: 1
- Views: 7042
Basic Arduino Touch Demo
I am unable to get a minimal Arduino touch screen to function. I am using an EVE4 Capacitive touch, 7" screen. The libraries I am using are from here https://www.lcdforums.com/forums/viewtopic.php?f=45&t=6918 I have removed all the unused display demo lines in the above linked program and r...
- Fri Apr 22, 2022 2:49 pm
- Forum: EVE2 & EVE3 & EVE4 SPI TFT's
- Topic: Basic Arduino EVE Demo
- Replies: 3
- Views: 10976
Re: Basic Arduino EVE Demo
Thank you! Apparently I had an older version of this library.
- Mon Apr 11, 2022 8:51 am
- Forum: EVE2 & EVE3 & EVE4 SPI TFT's
- Topic: Basic Arduino EVE Demo
- Replies: 3
- Views: 10976
Re: Basic Arduino EVE Demo
The library found here: https://github.com/MatrixOrbital/EVE2-Library does not provide for a very basic function of changing the line width. The functions listed below are located in the Eve2_81x.h file, but there is no way that I can find to change the line width. There is a LINE_WIDTH command in S...
- Thu Apr 07, 2022 7:15 am
- Forum: EVE2 & EVE3 & EVE4 SPI TFT's
- Topic: Arduino Uno versus Mega2560
- Replies: 3
- Views: 7706
Re: Arduino Uno versus Mega2560
Yes. That is what I discovered. There is a way to change this in software, but it would be managing the SPI with software instead of the UART and the results are likely to be poor. The UART SPI connects to the Mega pins 50, 51, and 52. The Uno-to-Mega connection pins are: 11>51 12>50 13>52. The only...
- Tue Apr 05, 2022 4:30 pm
- Forum: EVE2 & EVE3 & EVE4 SPI TFT's
- Topic: Arduino Uno versus Mega2560
- Replies: 3
- Views: 7706
Arduino Uno versus Mega2560
I am able to get the Basic Arduino EVE Demo working with an Arduino Uno board. But nothing happens when I use a Mega2560 board. I need the Mega2560 board for my project. I am using the EVE2 Scoodo shield. The display is an EVE3-70G-BLM-TPC-F32. I am powering the Uno and Mega2560 boards with 12VDC. I...