diff options
| author | Anton Staaf <robotboy@chromium.org> | 2015-07-28 10:30:44 -0700 |
|---|---|---|
| committer | ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> | 2015-08-10 17:54:17 +0000 |
| commit | 014d180b1da90a5e23f2ebd4df3d00457bc5fb28 (patch) | |
| tree | e6ac67ab0e24d86d82e2e93fc811261bddd66568 /chip/stm32/usart.c | |
| parent | 77f68f204f2e27f7ed7e80bcdd1e36280bbcff83 (diff) | |
| download | chrome-ec-014d180b1da90a5e23f2ebd4df3d00457bc5fb28.tar.gz | |
USART: Split RX driver between L and F families
The USART peripheral in the L and F families is different enough to need
different receive drivers. In particular, the L family USART perihperal
has no way of disabling the overflow error bit. So for that family we
check and clear the bit, and keep a count of overflows.
Signed-off-by: Anton Staaf <robotboy@chromium.org>
BRANCH=None
BUG=None
TEST=make buildall -j
Change-Id: Iea26c242d5177afd552a3bd4d6ab1a9c7a65f90e
Reviewed-on: https://chromium-review.googlesource.com/288978
Trybot-Ready: Anton Staaf <robotboy@chromium.org>
Tested-by: Anton Staaf <robotboy@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Commit-Queue: Anton Staaf <robotboy@chromium.org>
Diffstat (limited to 'chip/stm32/usart.c')
| -rw-r--r-- | chip/stm32/usart.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/chip/stm32/usart.c b/chip/stm32/usart.c index 32dbeaf7d0..549769cb48 100644 --- a/chip/stm32/usart.c +++ b/chip/stm32/usart.c @@ -42,7 +42,7 @@ void usart_init(struct usart_config const *config) */ STM32_USART_CR1(base) = 0x0000; STM32_USART_CR2(base) = 0x0000; - STM32_USART_CR3(base) = STM32_USART_CR3_OVRDIS; + STM32_USART_CR3(base) = 0x0000; /* * Enable the RX, TX, and variant specific HW. @@ -52,6 +52,12 @@ void usart_init(struct usart_config const *config) config->hw->ops->enable(config); /* + * Clear error counts. + */ + config->state->rx_overrun = 0; + config->state->rx_dropped = 0; + + /* * Enable the USART, this must be done last since most of the * configuration bits require that the USART be disabled for writes to * succeed. @@ -98,6 +104,6 @@ void usart_set_baud_f(struct usart_config const *config, int frequency_hz) void usart_interrupt(struct usart_config const *config) { - config->tx->interrupt(config); - config->rx->interrupt(config); -}
\ No newline at end of file + config->tx->interrupt(config); + config->rx->interrupt(config); +} |