Hi there!
If I interpret table 45 on p. 247 of the reference manual correctly, then the IPCC interrupt is not able to wake up a CPU from STOP mode:
Am I correct in my interpretation? If so, is there any other way for CPU1 to wake up CPU2 from STOP mode to signal that there is a message waiting? One way I can think of is connecting two GPIO pins so that CPU1 can generate an external interrupt to CPU2 but that feels like such a waste of resources :(
Thanks in advance,
Pieter
1 ACCEPTED SOLUTION
Accepted Solutions
ST support helped me on this. For other people also looking for a solution, this is it:
On CPU1:
// Enable IPCC CPU1 Wake up interrupt
LL_EXTI_EnableIT_32_63(LL_EXTI_LINE_36);On CPU2:
// Enable IPCC CPU2 Wake up interrupt
LL_C2_EXTI_EnableIT_32_63(LL_EXTI_LINE_37);See Reference Manual "16.3.1 EXTI wake-up interrupt list":
Best regards,
Pieter
ST support helped me on this. For other people also looking for a solution, this is it:
On CPU1:
// Enable IPCC CPU1 Wake up interrupt
LL_EXTI_EnableIT_32_63(LL_EXTI_LINE_36);On CPU2:
// Enable IPCC CPU2 Wake up interrupt
LL_C2_EXTI_EnableIT_32_63(LL_EXTI_LINE_37);See Reference Manual "16.3.1 EXTI wake-up interrupt list":
Best regards,
Pieter
