73 lines
2.2 KiB
C
73 lines
2.2 KiB
C
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/*
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* This file is part of the libopencm3 project.
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <libopencm3/stm32/usart.h>
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void usart_enable_fifos(uint32_t usart) {
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USART_CR1(usart) |= USART_CR1_FIFOEN;
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}
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void usart_disable_fifos(uint32_t usart) {
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USART_CR1(usart) &= ~USART_CR1_FIFOEN;
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}
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void usart_enable_tx_fifo_empty_interrupt(uint32_t usart) {
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USART_CR1(usart) |= USART_CR1_TXFEIE;
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}
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void usart_disable_tx_fifo_empty_interrupt(uint32_t usart) {
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USART_CR1(usart) &= ~USART_CR1_TXFEIE;
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}
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void usart_enable_tx_fifo_threshold_interrupt(uint32_t usart) {
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USART_CR3(usart) |= USART_CR3_TXFTIE;
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}
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void usart_disable_tx_fifo_threshold_interrupt(uint32_t usart) {
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USART_CR3(usart) &= ~USART_CR3_TXFTIE;
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}
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void usart_set_tx_fifo_threshold(uint32_t usart,
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usart_fifo_threshold_t threshold) {
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uint32_t cr3 = USART_CR3(usart) &
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~(USART_FIFO_THRESH_MASK << USART_CR3_TXFTCFG_SHIFT);
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USART_CR3(usart) = cr3 | (threshold << USART_CR3_TXFTCFG_SHIFT);
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}
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void usart_enable_rx_fifo_full_interrupt(uint32_t usart) {
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USART_CR1(usart) |= USART_CR1_RXFFIE;
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}
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void usart_disable_rx_fifo_full_interrupt(uint32_t usart) {
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USART_CR1(usart) &= ~USART_CR1_RXFFIE;
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}
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void usart_enable_rx_fifo_threshold_interrupt(uint32_t usart) {
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USART_CR3(usart) |= USART_CR3_RXFTIE;
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}
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void usart_disable_rx_fifo_threshold_interrupt(uint32_t usart) {
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USART_CR3(usart) &= ~USART_CR3_RXFTIE;
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}
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void usart_set_rx_fifo_threshold(uint32_t usart,
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usart_fifo_threshold_t threshold) {
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uint32_t cr3 = USART_CR3(usart) &
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~(USART_FIFO_THRESH_MASK << USART_CR3_RXFTCFG_SHIFT);
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USART_CR3(usart) = cr3 | (threshold << USART_CR3_RXFTCFG_SHIFT);
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}
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