1 files changed, 34 insertions, 0 deletions
diff --git a/firmware/x300/lib/wb_uart.c b/firmware/x300/lib/wb_uart.c
new file mode 100644
index 000000000..368d0e150
--- /dev/null
+++ b/firmware/x300/lib/wb_uart.c
@@ -0,0 +1,34 @@
+// Copyright 2012 Ettus Research LLC
+
+#include <wb_uart.h>
+#include <wb_utils.h>
+
+localparam SUART_CLKDIV = 0;
+localparam SUART_TXLEVEL = 1;
+localparam SUART_RXLEVEL = 2;
+localparam SUART_TXCHAR = 3;
+localparam SUART_RXCHAR = 4;
+
+void wb_uart_init(const uint32_t base, const size_t div)
+{
+    wb_poke32(base + SUART_CLKDIV*4, div);
+}
+
+void wb_uart_putc(const uint32_t base, const int ch)
+{
+    while (wb_peek32(base + SUART_TXLEVEL*4) == 0);
+    wb_poke32(base + SUART_TXCHAR*4, ch);
+}
+
+bool wb_uart_try_putc(const uint32_t base, const int ch)
+{
+    if (wb_peek32(base + SUART_TXLEVEL*4) == 0) return false;
+    wb_poke32(base + SUART_TXCHAR*4, ch);
+    return true;
+}
+
+int wb_uart_getc(const uint32_t base)
+{
+    if (wb_peek32(base + SUART_RXLEVEL*4) == 0) return -1;
+    return wb_peek32(base + SUART_RXCHAR*4);
+}