feat: publish FreeRTOS C FC10 card

vendor/Hazard3/test/sim/common/tb_uart.hpp

@@ -0,0 +1,34 @@
+#ifndef _TB_UART_HPP
+#define _TB_UART_HPP
+
+#include <cstdint>
+
+extern "C" {
+#include "tb_uart_io.h"
+}
+
+class TbUart {
+public:
+	explicit constexpr TbUart(unsigned index) : index_(index) {}
+
+	void write(char c) const { tb_uart_write(index_, static_cast<std::uint8_t>(c)); }
+
+	void write(const char *str) const {
+		while (*str)
+			write(*str++);
+	}
+
+	bool connected() const { return tb_uart_connected(index_); }
+	bool canRead() const { return tb_uart_can_read(index_); }
+
+	// Returns [0..255] on success, or -1 if RX FIFO is empty.
+	int tryRead() const { return tb_uart_try_read(index_); }
+
+	void clearOverrun() const { tb_uart_clear_overrun(index_); }
+
+private:
+	unsigned index_;
+};
+
+#endif
+