updated version

2026-02-11 14:04:00 -07:00
parent b934f79878
commit d2d0a508ec
8 changed files with 295 additions and 185 deletions
--- a/include/io.h
+++ b/include/io.h
@@ -53,6 +53,14 @@ static void uart_print_int(unsigned int value)
        uart_putc(buffer[i]);
 }

+static char uart_getc_nonblocking(void)
+{
+    if (UART0_FR & (1 << 4)) // RXFE = receive FIFO empty
+        return 0; // indicate no data
+    return (char)(UART0_DR & 0xFF);
+}
+
+
 // UART_IO instance with function pointers assigned
 static const UART_IO uart_io = {
    .putc = uart_putc,