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rp: fix adc test flakiness

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GP29 is connected to the cyw43 SCK pin. cyw43 is selected by
default (due to rp2040 pins being input/pulldown by default), so the
wifi chip is always selected and watches the SCK pin. this little bit of
load on the SCK pin is enough to disturb the 300k voltage divider used
for VSYS sensing, making the test flaky.
This commit is contained in:
pennae 2023-08-03 22:56:39 +02:00
parent a40daa923b
commit 55e07712e5
1 changed files with 3 additions and 1 deletions
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4
tests/rp/src/bin/adc.rs
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@ -8,7 +8,7 @@ use defmt::*;
use embassy_executor::Spawner; use embassy_executor::Spawner;
use embassy_rp::adc::{Adc, Channel, Config, InterruptHandler, Sample}; use embassy_rp::adc::{Adc, Channel, Config, InterruptHandler, Sample};
use embassy_rp::bind_interrupts; use embassy_rp::bind_interrupts;
use embassy_rp::gpio::Pull; use embassy_rp::gpio::{Level, Output, Pull};
use {defmt_rtt as _, panic_probe as _}; use {defmt_rtt as _, panic_probe as _};
bind_interrupts!(struct Irqs { bind_interrupts!(struct Irqs {
@ -18,6 +18,8 @@ bind_interrupts!(struct Irqs {
#[embassy_executor::main] #[embassy_executor::main]
async fn main(_spawner: Spawner) { async fn main(_spawner: Spawner) {
let mut p = embassy_rp::init(Default::default()); let mut p = embassy_rp::init(Default::default());
let _power_reg_pwm_mode = Output::new(p.PIN_23, Level::High);
let _wifi_off = Output::new(p.PIN_25, Level::High);
let mut adc = Adc::new(p.ADC, Irqs, Config::default()); let mut adc = Adc::new(p.ADC, Irqs, Config::default());
{ {