MPC5777C PIT interrupts error

[duyhung]

Hi all,

I use MPC5777C on Green Hills - Multi, i build demo code to blink led base on Example MPC5748G PIT ISR .

Now if demo code run PIT no interrupts it ok but I user PIT with interrupt it hang. I think it do not find address of vector table when PIT interrupt occurs.

I set MPC5777C_IsrVecTab.c file,

set PIT interrupts is location at 301 in vector table,

void INTC_Init(void) {  //-1--------------------------------------------------------------------   /* The Block Configuration Register is used to configure options of the INTC.       Initialize INTC for software vector mode */   INTC.MCR.R = 0x00000000;        //-2--------------------------------------------------------------------   /* configure IVORx offsets      This file also includes a trap for all core exceptions, excluding IVOR4 exceptions which have seperate handler */   e200zX_Interrupt_Setup();   //-3--------------------------------------------------------------------   /* configure Interrupt Base pointer      Set INTC ISR vector table base address */   INTC.IACKR.B.VTBA = (uint32_t) &IntcIsrVectorTable[0]; //-4--------------------------------------------------------------------   // assign VECTOR TABLE address //  INTC_0.IACKR[0].R = (uint32_t) IntcIsrVectorTable; //-5--------------------------------------------------------------------   // set lowest priority to enable interrupts from higher ones   INTC.CPR.B.PRI = 0; //-6--------------------------------------------------------------------   // assing required peripheral priorities   //INTC.PSR[226].R = 0x8001;    // PIT0   INTC.PSR[301].B.PRC_SEL = 0x00;    // PIT0   INTC.PSR[301].B.PRI = 0x01;    // PIT0 //-7--------------------------------------------------------------------   // Enable interrupts   asm(" wrteei 1"); }//INTC_Init

set

    .equ  INTC_IACKR, 0xFFF48010  # Interrupt Acknowledge Register address

    .equ  INTC_EOIR,  0xFFF48018  # End Of Interrupt Register address

Where am I missing ?

Do you have complete example of this PIT with interrupt ? Can you give me references ?

Thanks & Regards

D.Hung

Original Attachment has been moved to: MPC5777C_IsrVecTab.c.zip

[davidtosenovjan]

Do you have properly initialized IVOR registers? I am asking because these are not present with e200z420 but they are present with e200z7 used on MPC5777C device.

[duyhung]

I initialized it same with MPC5748G. Seems to me wrong in the initialization IVOR registers. Can you help me solution?

Thanks & Regards

D.Hung

[davidtosenovjan]

I am attaching the solution. Pay attention to Vector_SW_VLE_e200z7.s and intc_sw_handlers.s where I had to made some changes. Otherwise it is based on mentioned approach.

[duyhung]

Thank you ! Code it run ok. I see you changes Function to Setup the Core Interrupt Registers. Do you have document explaining the changes ?

#=================================================
#  Function to Setup the Core Interrupt Registers
#=================================================              
e200zX_Interrupt_Setup:
    #IVPR = address base used with IVOR's
    e_lis r5, __IVPR@h   
    e_or2i r5, __IVPR@l
    mtIVPR r5
    se_bmaski r3,0
    se_and   r3,r5
    e_add16i r5,r3,0x00@l
    mtivor0 r5
    e_add16i r5,r3,0x10@l
    mtivor1 r5
    e_add16i r5,r3,0x20@l
    mtivor2 r5
    e_add16i r5,r3,0x30@l
    mtivor3 r5
    e_add16i r5,r3,0x40@l
    mtivor4 r5
    e_add16i r5,r3,0x50@l
    mtivor5 r5
    e_add16i r5,r3,0x60@l
    mtivor6 r5
    e_add16i r5,r3,0x70@l
    mtivor7 r5
    e_add16i r5,r3,0x80@l
    mtivor8 r5
    e_add16i r5,r3,0x90@l
    mtivor9 r5
    e_add16i r5,r3,0xA0@l
    mtivor10 r5
    e_add16i r5,r3,0xB0@l
    mtivor11 r5
    e_add16i r5,r3,0xC0@l
    mtivor12 r5
    e_add16i r5,r3, 0xD0@l
    mtivor13 r5
    e_add16i r5,r3,0xE0@l
    mtivor14 r5
    e_add16i r5,r3,0xF0@l
    mtivor15 r5
    se_blr
.size e200zX_Interrupt_Setup,$-e200zX_Interrupt_Setup

[nguyencongtruon]

Hi Hung,

I meet the same issue with MCP5748G when I run code. Can you help me to fix it .
Thank you very much .