actually do it

firmware/uart.cpp

@@ -0,0 +1,36 @@
+#include "ch.h"
+#include "hal.h"
+#include "chprintf.h"
+
+#include "uart.h"
+
+static const UARTConfig uartCfg =
+{
+    .txend1_cb = nullptr,
+    .txend2_cb = nullptr,
+    .rxend_cb = nullptr,
+    .rxchar_cb = nullptr,
+    .rxerr_cb = nullptr,
+    .timeout_cb = nullptr,
+
+    .timeout = 0,
+    .speed = 500000,
+    .cr1 = 0,
+    .cr2 = 0,
+    .cr3 = 0,
+};
+
+static char printBuffer[200];
+
+static THD_WORKING_AREA(waUartThread, 256);
+static void UartThread(void*)
+{
+
+}
+
+void InitUart()
+{
+    uartStart(&UARTD1, &uartCfg);
+
+    chThdCreateStatic(waUartThread, sizeof(waUartThread), NORMALPRIO, UartThread, nullptr);
+}

firmware/uart.h

@@ -0,0 +1,3 @@
+#pragma once
+
+void InitUart();