#startup

Syntax:

    #startup SubName  [priority]

Explanation:

#startup is used in include files to automatically insert initialization routines. If a define or subroutine from the file is used in the program, then the specified subroutine will be called.

The priority to #startup support the setting of the priority of the subroutines for all the libraries in a project.

Subroutines will be called in order from smallest to largest priority number.

InitSys has priority 80, lowlevel communication routines have the priority of 90
All other subroutines defaults to 100.

Notes: Limitations on this directive are:

startup may only occur once within a source file.

No parameters can be passed the the subroutine that is specificed.

Example 1:

This example from the hardware I2C library set the subroutine with the priority of 90.

    #startup HIC2Init, 90

Example 2:

This example from would be included in user code to ensure the PPS setting are set prior to use of the MSSP or USART.

    #chip 16f18855,32
    #option explicit
    #config RSTOSC_HFINT32

    'Set the PPS of the I2C and the RS232 ports.
    #startup InitPPS, 85
    Sub InitPPS
      RC0PPS = 0x0010       'RC0->EUSART:TX;
      RXPPS  = 0x0011       'RC1->EUSART:RX;

      SSP1CLKPPS = 0x14     'RC3->MSSP1:SCL1;
      SSP1DATPPS = 0x13     'RC4->MSSP1:SDA1;
      RC3PPS = 0x15         'RC3->MSSP1:SCL1;
      RC4PPS = 0x14         'RC4->MSSP1:SDA1;
    End Sub