Where are the Block Parameters I entered? Why do they get different values in the generated code?

Hi there,

I generated Code with Simulink Coder from my model. Teh model contains some gains. As gain value i entered variables, such as r or Alpha. The values are defined in an mat-File: r =22, Alpha =9. But in my generated Code i have some issues with These block parameters. They are deklared in Model_data.c in the struct shown at the end. So as you can see, with r is everything fine, but Alpha=9 became Alpha = 1207959552. Someone can explain this to me?

Thx a lot!

P_Model_T Model_P={
  22,            /*Variable: r
                  *Referenced by: '<sr3>/r_Constant'
                  */
  1207959552     /*Variable: Alpha
                  *Referenced by: '<sr3>/Alpha_Constant'
                  */
}

Answer 1

[Mark McBroom]

it looks like simulink coder selected a fixed point data type for the constant. fix this by double clicking on the gain block and explicitly specifying the desired data type.

[sarah haras]

thanks for your answer, on the gain-block itself i had specified the value as an int. But that gave me the hint to specify the data type in the m-file, too. I did this via Simulink.Parameters. With this the Parameters appear clear now.