ISR Declaration and Closure Tab

ISR declaration being a function declaration receives pairs of values for its declaration: a void pointer of the HAL data structure and the actual variable name. The values selected for both are:

• Manual symbol that allows entering any character string, in this case set to void*
• HAL structure pointer name
  Note: The ISR function name is a fixed value that is resolved by Processor Expert as the name of the ISR function. The return type is left blank (it will be substituted as void by Processor Expert).
  Figure 1. ISR Declaration and Closure Tab
  
  
  
  

The Close ISR statement(s) section allows you to enter C statements that will be inserted at the end of ISRs of all LDDs included in the Processor Expert project. This is useful for RTOSs that require ISRs to return a specific value to make decisions based on it, that is Linux. In case of MQX, you only enter a return;.

There are many RTOSs that do not support Virtual Interrupt Tables, so ISRs do not receive any input parameter. In such case, you can leave the Close ISR statement(s) section with its default values (no parameters). However, since ISRs in LDDs use the HAL data structure to perform its I/O, declare a pointer to that structure into each LDD driver.

Include the following in the RTOS include section below the RTOS C include:

  %if ModuleName != 'Cpu' 
  

  %'ModuleName'_TDeviceData *DeviceDataPrv;
  

  %endif

  

Set the pointer generated by Processor Expert in that LDD with the pointer returned by the Init() function somewhere in the RTOS adaptation layer.