From 6871c2fd851171c6eab5353b004c5bd8fb1b91a1 Mon Sep 17 00:00:00 2001
From: Brian Cully <bjc@kublai.com>
Date: Mon, 8 Aug 2022 13:17:08 -0400
Subject: add missing log module

---
 src/log.rs | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 src/log.rs

diff --git a/src/log.rs b/src/log.rs
new file mode 100644
index 0000000..07525cc
--- /dev/null
+++ b/src/log.rs
@@ -0,0 +1,16 @@
+use core::fmt::Write;
+
+use gd32vf103xx_hal::{
+    pac::USART1,
+    serial::Tx,
+};
+
+static mut TX: Option<Tx<USART1>> = None;
+
+pub unsafe fn new(tx: Tx<USART1>) {
+    TX = Some(tx);
+}
+
+pub unsafe fn log(str: &str) {
+    TX.as_mut().map(|tx| tx.write_str(str));
+}
-- 
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