35 lines
809 B
C
35 lines
809 B
C
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enum uart_parity {
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UART_PARITY_NONE,
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UART_PARITY_EVEN,
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UART_PARITY_ODD,
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UART_PARITY_MARK,
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UART_PARITY_SPACE,
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};
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/* uart flags */
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#define UART_PARITY_ERROR (1 << 0)
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#define UART_CODE_VIOLATION (1 << 1)
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#define UART_BREAK (1 << 2)
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typedef struct uart {
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void *inst;
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int (*tx_cb)(void *inst);
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void (*rx_cb)(void *inst, int data, uint32_t flags);
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uint8_t data_bits;
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enum uart_parity parity;
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uint8_t stop_bits;
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int last_bit;
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uint32_t tx_data;
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uint32_t rx_data;
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int tx_pos;
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int rx_pos;
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int length;
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} uart_t;
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int uart_init(uart_t *uart, void *inst, uint8_t data_bits, enum uart_parity parity, uint8_t stop_bits, int (*tx_cb)(void *inst), void (*rx_cb)(void *inst, int data, uint32_t flags));
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int uart_tx_bit(uart_t *uart);
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int uart_is_tx(uart_t *uart);
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void uart_rx_bit(uart_t *uart, int bit);
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