only improvements

dma_gpio/src/software_uart/uart_emulation.rs

@@ -40,7 +40,8 @@ pub fn encode_uart_byte_cfg(
 ) -> usize {
     // GPIOx_BSRR register str. 636 kap. 13.4.7
     let set_high = |bit: u8| -> u32 { 1u32 << bit };
-    let set_low = |bit: u8| -> u32 { 1u32 << (bit as u32 + 16) };
+    let set_low = |bit: u8| -> u32 { 0 };
+    // let set_low = |bit: u8| -> u32 { 1u32 << (bit as u32 + 16) };
 
     let mut idx = 0usize;