Appendix a - watchdog timer, A.1 sample code, Appendix a, watchdog timer: prese – ADLINK M-342 User Manual

Page 89: A appendix: watchdog timer, Sample code

Watchdog Timer

M-342

Appendix A - Watchdog Timer

A sample program for configuring the M-342’s watchdog timer is
shown below.

A.1 Sample Code

void SIOConfigEnter ()

{

IoWrite8 (NCT6776F_CONFIG_INDEX , 0x87);

}

void SIOConfigExit ()

{

IoWrite8 (NCT6776F_CONFIG_INDEX , 0xaa);

}

void Oem_WDT_Init (

IN SETUP_DATA *SetupData

)

{

UINT8 Data8;

SIOConfigEnter();

IoWrite8 (NCT6776F_CONFIG_INDEX , 0x2B);

// Pin80 function selection to ATXPGD

Data8 = IoRead8(NCT6776F_CONFIG_DATA) & 0xEF;

IoWrite8 (NCT6776F_CONFIG_DATA , Data8);

IoWrite8 (NCT6776F_CONFIG_INDEX , 0x07);

IoWrite8 (NCT6776F_CONFIG_DATA , 0x09);

IoWrite8 (NCT6776F_CONFIG_INDEX , 0x30);

Data8 = IoRead8(NCT6776F_CONFIG_DATA) | 0x08;

IoWrite8 (NCT6776F_CONFIG_DATA , Data8);

IoWrite8 (NCT6776F_CONFIG_INDEX , 0xE4);

// selection GP34 to GPO High

IoWrite8 (NCT6776F_CONFIG_DATA , 0xEF);

IoWrite8 (NCT6776F_CONFIG_INDEX , 0xE5);

IoWrite8 (NCT6776F_CONFIG_DATA , 0x10);