ECSM's software watchdog？

huafang — Thu, 18 Jan 2018 06:45:47 GMT

I want to use MPC5554 chip ECSM module software watchdog, related documents?

Re: ECSM's software watchdog？

davidtosenovjan — Thu, 18 Jan 2018 09:45:34 GMT

ECSM's software watchdog timer is not recommended to use on MPC5554 device.

For core watchdog you may see following appnote:

https://www.nxp.com/docs/en/application-note/AN2817.pdf

If you want only disable core watchdog, you may use following function:

asm
{
    mfhid0 r11               /* Move from spr HID0 to r11 (copies HID0) */
    li      r12, 0xBFFF       /* Load immed. data of ~0x4000 to r12 */
    oris    r12, r12, 0xFFFF
    and     r11, r12, r11     /* OR r12 (~0x00004000) with r11 (HID0 value) */
    mthid0 r11               /* Move result to HID0 */

lis r12, 0x00
mtspr tcr, r12 /* clear SPR TCR register */
}

MPC5xxxのトピックECSM's software watchdog？

ECSM's software watchdog？

Re: ECSM's software watchdog？