TMS570LC4357: Code getting stuck in infinite loop of "dataEntry" interrupt vector while initialising message box for CAN controller

Hi Miro,

Thanks for your reply.

while debugging I found below code in HL_sys_core.asm generated by Halcogen:

;-------------------------------------------------------------------------------

;Initialize RAM memory

.def _memInit_

.asmfunc

_memInit_

ldr r12, MINITGCR ;Load MINITGCR register address

mov r4, #0xA

str r4, [r12] ;Enable global memory hardware initialization

ldr r11, MSIENA ;Load MSIENA register address

mov r4, #0x1 ;Bit position 0 of MSIENA corresponds to SRAM

str r4, [r11] ;Enable auto hardware initalisation for SRAM

mloop ;Loop till memory hardware initialization comletes

ldr r5, MSTCGSTAT

ldr r4, [r5]

tst r4, #0x100

beq mloop

mov r4, #5

str r4, [r12] ;Disable global memory hardware initialization

bx lr

.endasmfunc

;-------------------------------------------------------------------------------

From this I am interpreting that only SRAM is being initialized. I read in the data sheet that we need to initialize DCAN RAM before using it and it corresponds to 5th bit in the MSIENA register. So I tried below alteration to mem init function-

ldr r11, MSIENA ;Load MSIENA register address

mov r4, #0x21 ;Bit position 0 of MSIENA corresponds to SRAM,5th bot to enable DCAN1 RAM

but with this change I am not able to load the code on MCU, while flashing the code it is getting stuck and showing that CPU reset is happening.

Can you please tell what is going on?

Thanks

Archana

HI Miro,

Yes, The issue got resolved.

Thanks for the help.

Regards

Archana