00:28 <re_irc> <the tab openoor (spookyvision@{github,cohost})> I'll test with rp2040, maybe it's something stm32 related

00:35 <re_irc> <the tab openoor (spookyvision@{github,cohost})> indeed, at least the "rust-dap" probe's uart shows up

15:45 <re_irc> <Stephen D> Hello! I'm trying to sample the ADC at a predictable rate. My thinking is I'd set up a timer running at my sample rate which the ADC would use as a trigger. The ADC uses DMA and would trigger an interrupt when full. I have the timer working properly but my DMA interrupt is never firing. I'm hoping I'm missing something simple. I'm on STM32F411. Here's the relevant code:

15:45 <re_irc> fn setup_timer(clocks: &Clocks, tim1: pac::TIM1, debug_pin: PA8) {

15:45 <re_irc> let debug_pin = debug_pin.into_alternate();

15:45 <re_irc> ... long message truncated: https://psion.agg.io/_matrix/media/r0/download/psion.agg.io/wxraepASwqUW5dxlAoGijqIhQXUql18S (33 lines)

15:45 <re_irc> let mut pwm = tim1.pwm_hz(debug_pin, SAMPLE_RATE.Hz(), clocks).split();

15:45 <re_irc> <Nitin> Hi,

15:45 <re_irc> I've created the GPIO interrupt program using device pac. When interrupt fires it doesn't execute the corresponding interrupt handler nor gives any error. It goes to wfi() waiting for interrupt.

15:46 <re_irc> Looking for some inputs. Attached the code below

15:46 <re_irc> <Stephen D> Sorry for the disjoint blocks - I've moved all the code from a few places. I'm hoping there's a relatively obvious configuration error I've made, otherwise I'll put the full code on git

16:13 <re_irc> < (@ryan-summers:matrix.org)> Are you sure that the transfer complete ISR is actually firing? Those ISRs can be somewhat finicky and the DMA might be in e.g. infinite transfer mode

16:13 <re_irc> < (@ryan-summers:matrix.org)> Without delving further, all I can do is point you at our external ADC/DAC via SPI DMA+timer powered implementation for stabilizer, which is done on an STM32H7: https://github.com/quartiq/stabilizer/blob/master/src/hardware/adc.rs

16:46 <re_irc> < (@firefrommoonlight:matrix.org)> I don't know exactly what's wrong and am phone typing, but your approach is right

16:47 <re_irc> < (@firefrommoonlight:matrix.org)> I think perhaps instead of a CC channel on a normal timer, try using a basic timer; ADC and DAC triggering like this is their purpose

16:48 <re_irc> < (@firefrommoonlight:matrix.org)> Ie tim6/7. Might help eliminate some timer config while troubleshooting

16:56 <re_irc> < (@firefrommoonlight:matrix.org)> You may need to set the timer's update mode to Trigger

16:57 <re_irc> < (@firefrommoonlight:matrix.org)> Ie, And not configure it for PWM/output compare

17:12 <re_irc> < (@firefrommoonlight:matrix.org)> And depending on your use, you may want circular DMA

17:18 <re_irc> < (@firefrommoonlight:matrix.org)> (*On basic timers, you configure their master mode to Update; other timers so it a diff way; QC what that is)

17:18 <re_irc> < (@firefrommoonlight:matrix.org)> * do

22:53 <re_irc> <bythemachine> Hi all. I asked this on discord #wg-embedded and was referred here: I'm looking into using rust embedded for validated module programs (common criteria etc...). Are there any IT security/compliance folk in the WG or is there another WG I should yeet myself into?