nrf/mphalport: Use wfi to save power while waiting at the UART REPL.

micropython · May 22, 2019 · 9cf1cbb · 9cf1cbb
1 parent 456c89f
commit 9cf1cbb
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/ports/nrf/mphalport.c b/ports/nrf/mphalport.c
@@ -58,6 +58,7 @@ int mp_hal_stdin_rx_chr(void) {
         if (MP_STATE_PORT(board_stdio_uart) != NULL && uart_rx_any(MP_STATE_PORT(board_stdio_uart))) {
             return uart_rx_char(MP_STATE_PORT(board_stdio_uart));
         }
+        __WFI();
     }
 
     return 0;