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ETang2's avatar
ETang2
Icon for Occasional Contributor rankOccasional Contributor
4 months ago
Solved

NiosV and juart-terminal

I had a project which works fine under niosII. I upgrade all the project with niosv and all seems fine except printing values in juart-terminal. Here is the main code :  #include <stdio.h> #inclu...
Embedded Applications Layer
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  • LiangYuG_Altera's avatar
    LiangYuG_Altera
    4 months ago

    Summary:

    1. printf(%f) always prints 0, even if the variable contains valid floating-point number.
      Change the On-Chip Ram size from decimal (such as 167.5KB / 167500 bytes) to binary (such as 167KiB / 171008 bytes).

    2. Character é is printed wrongly.
      Change the active code page of Windows's command prompt from 437 to 65001 (UTF-8)
LiangYuG_Altera's avatar
LiangYuG_Altera
Icon for Contributor rankContributor
4 months ago

Hi ETang2​ 

Changing the code page solve the accentuated problem.

Good to hear that.

I had the code line you proposed but i'm not sure to understand the result.

My objective is to see whether this issue is only affecting printf(%f). On laymen's terms, your situation is akin to can use the raw data for calculation, just cannot printf(%f).

  • Since the debugger shows a valid floating-point number, that means the raw data inside OCRAM/EMIF is intact. 
  • With your latest results, the raw data when perform printf(%ld) proves this point. 
  • However, I am not expecting the long invalid floating point number from "Concentration de CO2".

My suspect is on the software side.

  1. Can you export your BSP settings as a Tcl script, and share it here? I wish to review the your BSP setting, and see if I can make my working example to fail as yours.
  2. Can you try my example hello.c? Simplify away the I2C transaction to a immediate value, how will your system react?

Regards,
Liang Yu