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#ifndef _SOFT_UART_H
#define _SOFT_UART_H
enum suart_state {
WAIT_RESET,
IN_RESET,
WAIT_START_FALLEDGE,
WAIT_START_ETU07,
RX_BITS,
POST_RX_WAIT_HIGH,
};
enum suart_convention {
DIRECT_CONVENTION,
INVERSE_CONVENTION,
};
struct suart_data {
uint32_t samplerate; /* samples per second input rate */
uint32_t recip_etu; /* 1/etu */
uint8_t num_bits;
enum suart_state state;
enum suart_convention convention;
uint32_t sample_after_sbit;
uint8_t bits_pending;
uint8_t rx_char;
};
int suart_process_sample_bit(struct suart_data *suart, uint8_t clk_bit, uint8_t rst_bit, uint8_t sample_bit);
void suart_init(struct suart_data *su);
#endif
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