On Wed, May 6, 2020 at 6:10 PM Nathan Hartman <hartman.nat...@gmail.com> wrote: > On Wed, May 6, 2020 at 4:56 PM Gregory Nutt <spudan...@gmail.com> wrote: > > > In arch/arm/src/stm32/hardware/stm32_dma_v1.h, I have to add DMA > > > channel mappings of the form: > > > > > > # define DMACHAN_ADC1 STM32_DMA1_CHAN1 > > > > > > for the (new) case of CONFIG_STM32_STM32G47XX. > > > > > > How / where can I find the names and values that should be defined? > > > > Probably in the data sheet rather that the user manual > > I am beginning to see what's going on here, but I don't claim to > understand how this works yet.
Oh, I forgot to say, the datasheet contains almost nothing. The information seems to be in the Reference Manual after all (though I didn't see it earlier because I was looking for a table of peripherals to DMA channels, like you'd expect to find on most MCUs). The reference manual is RM0440 Rev 2, and it's in Table 81 (pages 383-384) where it seems that each peripheral DMA source/destination has a decimal number from 1 to 115, representing the DMAMUX input request number. Nathan
