TMS320F28377D Can CPU2

Hubert Kempkensteffen1

Prodigy 40 points

Hi,

im trying to run CAN_B Bus on CPU2 from Flash.

Running same Project on CPU1 works proper.

Ownership is set by:

EALLOW;

DevCfgRegs.CPUSEL8.bit.CAN_B = 1;

EDIS;

//GPIO10 - CANRXB
   GPIO_SetupPinMux(10, GPIO_MUX_CPU2, 2);
   //GPIO8 - CANTXA
   GPIO_SetupPinMux(8, GPIO_MUX_CPU2, 2);
   GPIO_SetupPinOptions(10, GPIO_INPUT, GPIO_ASYNC);
   GPIO_SetupPinOptions(8, GPIO_OUTPUT, GPIO_PUSHPULL);

dosn't work so far.

is there anything else to consider?

over 10 years ago

0 Vivek Singh over 10 years ago

TI__Guru** 117201 points

Hi,

Your code look ok. Have you checked all the configuration are written into register correctly by observing them in CCS register view?

Please note that ownership need to be set by CPU1 code only. So the code snapshot given in you post should be run from CPU1. CPU2 can not change the peripheral ownership or GPIO mux setting.

Regards,

Vivek Singh

0 Hubert Kempkensteffen1 over 10 years ago in reply to Vivek Singh

Prodigy 40 points

Hi,

forgot to enable the Clock:

EALLOW;
CpuSysRegs.PCLKCR10.bit.CAN_B = 1;
EDIS;

my mistake!

Now it works.

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TMS320F28377D Can CPU2