SIM card related Projects » SIMtrace

#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