uart: upgrade C api

2021-03-13 15:49:28 -08:00
parent 5d5eeb45cc
commit 75b5488b8d
4 changed files with 27 additions and 20 deletions
--- a/uart/echo.c
+++ b/uart/echo.c
@@ -1,9 +1,11 @@
 #include "uart.h"

+#define uart0 ((struct uart*)0xc010)
+
 int main() {
  while (1) {
-    char c = uart_read();
-    uart_write(c);
+    char c = uart_read(uart0);
+    uart_write(uart0, c);
  }

  // never returns