78 lines
2.3 KiB
C
78 lines
2.3 KiB
C
/* Reflow Oven Controller
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*
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* Copyright (C) 2020 Mario Hüttel <mario.huettel@gmx.net>
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*
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* This file is part of the Reflow Oven Controller Project.
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*
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* The reflow oven controller is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* GDSII-Converter 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with the reflow oven controller project.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stm32/stm32f4xx.h>
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#include <stm-periph/dma-ring-buffer.h>
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#include <stdint.h>
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#include <stddef.h>
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#ifndef UART_UART_H_
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#define UART_UART_H_
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struct stm_uart {
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USART_TypeDef *uart_dev;
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uint32_t brr_val;
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uint8_t base_dma_num;
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DMA_Stream_TypeDef *dma_tx_stream;
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uint8_t dma_tx_trigger_channel;
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DMA_Stream_TypeDef *dma_rx_stream;
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uint8_t dma_rx_trigger_channel;
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char *dma_rx_buff;
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char *dma_tx_buff;
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size_t rx_buff_count;
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size_t tx_buff_count;
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volatile uint32_t *rcc_reg;
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uint8_t rcc_bit_no;
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struct dma_ring_buffer_to_mem rx_ring_buff;
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struct dma_ring_buffer_to_periph tx_ring_buff;
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uint8_t tx : 1;
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uint8_t rx : 1;
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};
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int uart_init(struct stm_uart *uart);
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void uart_change_brr(struct stm_uart *uart, uint32_t brr);
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void uart_disable(struct stm_uart *uart);
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void uart_send_char(struct stm_uart *uart, char c);
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void uart_send_array(struct stm_uart *uart, const char *data, uint32_t len);
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void uart_send_string(struct stm_uart *uart, const char *string);
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void uart_send_array_with_dma(struct stm_uart *uart, const char *data, uint32_t len);
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void uart_send_string_with_dma(struct stm_uart *uart, const char *string);
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int uart_receive_data_with_dma(struct stm_uart *uart, const char **data, size_t *len);
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char uart_get_char(struct stm_uart *uart);
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int uart_check_rx_avail(struct stm_uart *uart);
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void uart_tx_dma_complete_int_callback(struct stm_uart *uart);
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size_t uart_dma_tx_queue_avail(struct stm_uart *uart);
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size_t uart_dma_rx_queue_avail(struct stm_uart *uart);
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#endif /* UART_UART_H_ */
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