diff options
| author | Alec Berg <alecaberg@chromium.org> | 2015-10-16 10:58:47 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2015-10-19 13:45:49 -0700 |
| commit | 4c8553dfb13d8046a32b833321826aade31a0264 (patch) | |
| tree | 5fe32dcaa4d4884895cafd8237f93b79f2ce2a07 /common/uart_buffering.c | |
| parent | 979440a583ad4e3de8b4c29e7a0861206eb271aa (diff) | |
| download | chrome-ec-4c8553dfb13d8046a32b833321826aade31a0264.tar.gz | |
stm32: add synchronous debug printf
Allow use of a synchronous debug printf instead of using the
full console task to save space. This can be turned on with
CONFIG_DEBUG_PRINTF, and will provide essentially a one-way
console for debugging. This is essentially expanding upon
the debug_printf work done for zinger.
BUG=chrome-os-partner:41959
BRANCH=none
TEST=tested with following CLs on glados_pd by verifying we
get a one-way console.
Change-Id: If028b5d873261890de5b270bbc00e06bdcaa7431
Signed-off-by: Alec Berg <alecaberg@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/306782
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Diffstat (limited to 'common/uart_buffering.c')
| -rw-r--r-- | common/uart_buffering.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/common/uart_buffering.c b/common/uart_buffering.c index 86a3482951..949c3968d6 100644 --- a/common/uart_buffering.c +++ b/common/uart_buffering.c @@ -301,8 +301,8 @@ int uart_printf(const char *format, ...) void uart_flush_output(void) { - /* If UART is suspended, ignore flush request. */ - if (uart_suspended) + /* If UART not initialized or is suspended, ignore flush request. */ + if (!uart_init_done() || uart_suspended) return; /* Loop until buffer is empty */ |