What does inter-core communication look like?

• linux

  3 6 0.0 C

  Linux kernel source tree (by openbouffalo)

  

The "IRQ router" is handled as a nested interrupt controller in linux. There are some memory mapped registers where we can mask/unmask/clear which interrupts we want to route to D0 from M0. Once one of these unmasked interrupts gets triggered, D0 will get `WL_ALL_IRQn`. And then you have to go look at those memory mapped registers to figure out which M0 interrupt got triggered. Look for function ` GLB_DSP_Get_MCU_IntStatus` and siblings. This functionality is completely undocumented and https://github.com/smaeul figured out how it works. Linux driver is here(https://github.com/openbouffalo/linux/blob/bl808/all/drivers/irqchip/irq-bflb-mcu.c)

• bl_docs

  6 132 2.5 HTML

  Datasheets and Reference Manual for BL602/BL808

  

I'm browsing through the documentation of bl808 SoC and I've got some questions, and I would be glad to have some answers as it is something new to me and I'm just trying to finally get my head around it. While answering, please bear in mind that if you don't know this SoC but have knowledge from other solutions I will be also supper happy, because I'm trying to grasp the general idea. This SoC is just an example.

• InfluxDB

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• M1s_BL808_example

  4 63 0.0 C

  M1s_BL808_example

  

In general I would recommend looking into the example sources at https://github.com/sipeed/M1s_BL808_example/

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