timer stuff, yield now added, still hard fault error

dma_gpio/src/software_uart/gpio_dma_uart_rx.rs

@@ -12,6 +12,7 @@ use embassy_stm32::dma::{
 use crate::config::{RX_OVERSAMPLE, UART_CFG};
 use crate::software_uart::decode_uart_samples;
 use embassy_sync::{blocking_mutex::raw::CriticalSectionRawMutex, pipe::Pipe};
+use embassy_futures::yield_now;
 
 // datasheet tabulka 137
 pub const TIM7_UP_REQ: Request = 5;
@@ -38,5 +39,6 @@ pub async fn rx_dma_task(
         let _ = rx.read_exact(&mut chunk).await;
         let decoded = decode_uart_samples(&chunk, RX_OVERSAMPLE, &UART_CFG);
         pipe_rx.write(&decoded).await;
+        yield_now().await;
     }
 }