zephyr: Initial Zephyr RTOS port, MicroPython part.

1 files changed, 22 insertions, 0 deletions

diff --git a/zephyr/uart_core.c b/zephyr/uart_core.c
new file mode 100644
index 000000000..5f48f973f
--- /dev/null
+++ b/zephyr/uart_core.c
@@ -0,0 +1,22 @@
+#include <unistd.h>
+#include "py/mpconfig.h"
+#include "src/zephyr_getchar.h"
+
+// Stopgap
+extern void printk(const char*, ...);
+
+/*
+ * Core UART functions to implement for a port
+ */
+
+// Receive single character
+int mp_hal_stdin_rx_chr(void) {
+    return zephyr_getchar();
+}
+
+// Send string of given length
+void mp_hal_stdout_tx_strn(const char *str, mp_uint_t len) {
+    while (len--) {
+        printk("%c", *str++);
+    }
+}