diff options
| author | Anton Staaf <robotboy@chromium.org> | 2015-07-28 15:11:28 -0700 |
|---|---|---|
| committer | ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> | 2015-08-24 19:08:30 +0000 |
| commit | 16f63703c9ccc46ec48abcc586a595456e99fc9a (patch) | |
| tree | 17dc3fa9b72217675e64507facddb7395e91390c /chip/stm32/usart_info_command.c | |
| parent | f7fa6248bf170d2fffbf3fb067b6ed40f0a4d55f (diff) | |
| download | chrome-ec-16f63703c9ccc46ec48abcc586a595456e99fc9a.tar.gz | |
USART: Add usart_info command
This optional console command is enabled with CONFIG_USART_INFO_COMMAND.
It will display and clear dropped character and overrun counts for all
configured USARTs.
Signed-off-by: Anton Staaf <robotboy@chromium.org>
BRANCH=None
BUG=None
TEST=make buildall -j
Change-Id: Icf6061aaab2cda71e9d317455c897828b9daf844
Reviewed-on: https://chromium-review.googlesource.com/292770
Tested-by: Anton Staaf <robotboy@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Commit-Queue: Anton Staaf <robotboy@chromium.org>
Trybot-Ready: Anton Staaf <robotboy@chromium.org>
Diffstat (limited to 'chip/stm32/usart_info_command.c')
| -rw-r--r-- | chip/stm32/usart_info_command.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/chip/stm32/usart_info_command.c b/chip/stm32/usart_info_command.c new file mode 100644 index 0000000000..7b949b10c6 --- /dev/null +++ b/chip/stm32/usart_info_command.c @@ -0,0 +1,38 @@ +/* Copyright 2015 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + * + * Console command to query USART state + */ +#include "atomic.h" +#include "common.h" +#include "console.h" +#include "usart.h" + +static int command_usart_info(int argc, char **argv) +{ + struct usart_configs configs = usart_get_configs(); + size_t i; + + for (i = 0; i < configs.count; i++) { + struct usart_config const *config = configs.configs[i]; + + if (config == NULL) + continue; + + ccprintf("USART%d\n" + " dropped %d bytes\n" + " overran %d times\n", + config->hw->index + 1, + atomic_read_clear(&(config->state->rx_dropped)), + atomic_read_clear(&(config->state->rx_overrun))); + } + + return EC_SUCCESS; +} + +DECLARE_CONSOLE_COMMAND(usart_info, + command_usart_info, + NULL, + "Display USART info", + NULL); |