Silicon Laboratories Stepper Machine Manual do Utilizador descarregar pdf (Página 6)

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4.3. Using the Header File Generation Function (Save C Code Header File)

Starting in version 2.5 of the ClockBuilder Desktop software, there is a function to automatically generate the

header file for use with the JumpStart project that includes the register map addresses, masks, and values. This

function uses the current frequency plan information present in the Programmer and converts it to the format

described in the previous section. To create this file, click on Options  Save C Code Header File in the software.

Figure 5. Selecting the Save C Code Header File Function

After it is generated, the header file should be compiled with the latest version of the JumpStart firmware project for

use in the MCU, replacing whatever register_map.h file was there previously. The main Jumpstart code includes

the header file already.

The generated header file contains the following:

 All the output driver, Multisynth, input configuration, spread spectrum, and phase and frequency adjustment

 Page bit and special register addressing (to deal with register locations greater than address 255)

 NUM_REGS_MAX calculation

 Correct C code syntax

Note that the header file is not optimized compared to one created manually, where a subset of the registers is

used. For example, if spread spectrum and phase adjustment are not needed in a frequency plan, the generated

file will use more flash memory space and take slightly longer to program the device since the registers related to

those unused features are included in the file.

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Silicon Laboratories Stepper Machine Manual do Utilizador Página 6