diff options
Diffstat (limited to 'libmaple/usart.c')
-rw-r--r-- | libmaple/usart.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/libmaple/usart.c b/libmaple/usart.c index 717a9d8..282fc5d 100644 --- a/libmaple/usart.c +++ b/libmaple/usart.c @@ -209,6 +209,9 @@ void usart_disable(uint8 usart_num) { /* Disable UE */ port->CR1 = 0; + + /* Clean up buffer */ + usart_clear_buffer(usart_num); } @@ -308,6 +311,26 @@ uint32 usart_data_available(uint8 usart_num) { return rb->tail - rb->head; } +void usart_clear_buffer(uint8 usart_num) { + usart_ring_buf *rb; + + switch (usart_num) { + case 1: + rb = &ring_buf1; + break; + case 2: + rb = &ring_buf2; + break; + case 3: + rb = &ring_buf3; + break; + default: + ASSERT(0); + } + + rb->tail = rb->head; +} + /** |