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authorFergus Noble2012-01-31 15:11:46 -0800
committerUwe Hermann2012-02-06 23:08:07 +0100
commit477c410be413aac0ff88b583fd7efc7873ef4768 (patch)
tree8ffc7a231abe6dfb647835cf678f9f029001a9d4 /lib/stm32/usart.c
parent7c67322f753e9f33a98ea2393c8345db479abf69 (diff)
Added functions to enable and disable DMA from stm32 USART.
Diffstat (limited to 'lib/stm32/usart.c')
-rw-r--r--lib/stm32/usart.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/lib/stm32/usart.c b/lib/stm32/usart.c
index a2c9f16..7995a52 100644
--- a/lib/stm32/usart.c
+++ b/lib/stm32/usart.c
@@ -148,3 +148,24 @@ u16 usart_recv_blocking(u32 usart)
return usart_recv(usart);
}
+
+void usart_enable_rx_dma(u32 usart)
+{
+ USART_CR3(usart) |= USART_CR3_DMAR;
+}
+
+void usart_disable_rx_dma(u32 usart)
+{
+ USART_CR3(usart) &= ~USART_CR3_DMAR;
+}
+
+void usart_enable_tx_dma(u32 usart)
+{
+ USART_CR3(usart) |= USART_CR3_DMAT;
+}
+
+void usart_disable_tx_dma(u32 usart)
+{
+ USART_CR3(usart) &= ~USART_CR3_DMAT;
+}
+