Hi,
I found a bug in xmc_can.c.
Initialy the MOIPR was modified with the "set" value, by a = operation. This clears the Interrupt Node Pointers, and so Interrupts no longer trigger.
Below the fixed code.
Is it even necessary to modify the MPN in this function? By my understanding the value is tied to the MO-Nr, which stays constant.
/* Initialization of XMC_CAN MO Object */
void XMC_CAN_MO_Config(const XMC_CAN_MO_t *const can_mo)
{
uint32_t reg;
/* Configure MPN */ // ***MODIFIED: mask MPN and OR newly calculated MPN to MOIPR or else you overwrite Interrupt Node Pointers
uint32_t num = ((uint32_t)(can_mo->can_mo_ptr) - CAN_BASE - 0x1000U)/0x0020U;
uint32_t set = (((uint32_t)(num/32) << (CAN_MO_MOIPR_MPN_Pos + 5U)) | ((uint32_t)(num%32) << CAN_MO_MOIPR_MPN_Pos));
can_mo->can_mo_ptr->MOIPR &= ~(511 << CAN_MO_MOIPR_MPN_Pos); // clear MPN
can_mo->can_mo_ptr->MOIPR |= set; // set MPN
...
}
