Getting Started with CFA800480 and Arduino

moabDev · Dec 25, 2024

I recently purchased a CFA800480E3-050SR that I was hoping to use for a project.
The goal is to display information in a race-car style dashboard. All I really need is to display text.

I've downloaded the demo code and have been able to display text and a box around it simply, however the EVE_Text command will not allow me to place a text larger than 25. Every time I try the screen will just go black. After reading more documentation I found that the EVE_ENC_CMD_NUMBER command should take up to the size 31 or 34. This is defined in EVE_Define.h but there is no implementation and the command takes in too many arguments for
EVE_Cmd_Dat_X that are available.

So I defined my own in hopes of getting it working:

C++:

uint16_t EVE_Cmd_Dat_5(uint16_t FWol,
                       uint32_t command,
                       uint32_t data0,
                       uint32_t data1,
                       uint32_t data2,
                       uint32_t data3,
                       uint32_t data4)
  {
  //Combine Address_offset into  then select the EVE
  //and send the 24-bit address and operation flag.
  _EVE_Select_and_Address(EVE_RAM_CMD|FWol,EVE_MEM_WRITE);
  //Send the uint32_t data
  _EVE_send_32(command);
  //Send the first uint32_t data
  _EVE_send_32(data0);
  //Send the second uint32_t data
  _EVE_send_32(data1);
  //Send the third uint32_t data
  _EVE_send_32(data2);
  //Send the fourth uint32_t data
  _EVE_send_32(data3);
  //Send the fifth uint32_t data
  _EVE_send_32(data4);
  //De-select the EVE
  SET_EVE_CS_NOT;
  //Increment address offset modulo 4096 and return it
  return((FWol+24)&0xFFF);
  }

This unfortunately did not work, however I was able to get EVE_ENC_CMD_GAUGE to partially work with this command I just was unable to get the gauge to display fully on screen. However the gauge was not too big of a priority so I decided to leave it.

I had the same issues with EVE_ENC_CMD_NUMBER as I did with Eve_Text however it would just not work at all regardless of the values.

I have looked though RudolphRiedel's code and was unable to get that to work at all, I had it working once but when I uploaded the same code a second time it stopped working.

My Question: How can I get the EVE_ENC_CMD_NUMBER command to work or is there another way to get larger text with
EVE_Text??

Getting Started with CFA800480 and Arduino

moabDev

New member