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53 lines
1.4 KiB
53 lines
1.4 KiB
#ifndef SOFTUART_H_
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#define SOFTUART_H_
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#include "user_interface.h"
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#define SOFTUART_MAX_RX_BUFF 64
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#define SOFTUART_GPIO_COUNT 16
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typedef struct softuart_pin_t {
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uint8_t gpio_id;
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uint32_t gpio_mux_name;
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uint8_t gpio_func;
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} softuart_pin_t;
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typedef struct softuart_buffer_t {
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char receive_buffer[SOFTUART_MAX_RX_BUFF];
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uint8_t receive_buffer_tail;
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uint8_t receive_buffer_head;
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uint8_t buffer_overflow;
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} softuart_buffer_t;
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typedef struct {
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softuart_pin_t pin_rx;
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softuart_pin_t pin_tx;
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bool inverse;
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//optional rs485 tx enable pin (high -> tx enabled)
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uint8_t pin_rs485_tx_enable;
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//wether or not this softuart is rs485 and controlls rs485 tx enable pin
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uint8_t is_rs485;
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volatile softuart_buffer_t buffer;
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uint16_t bit_time;
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} Softuart;
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bool Softuart_Available(Softuart *s);
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void Softuart_Intr_Handler(Softuart *s);
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void Softuart_SetPinRx(Softuart *s, uint8_t gpio_id);
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void Softuart_SetPinTx(Softuart *s, uint8_t gpio_id);
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void Softuart_EnableRs485(Softuart *s, uint8_t gpio_id);
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void Softuart_Init(Softuart *s, uint32_t baudrate, bool inverse);
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void Softuart_Putchar(Softuart *s, char data);
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void Softuart_Puts(Softuart *s, const char *c );
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uint8_t Softuart_Readline(Softuart *s, char* Buffer, uint8_t MaxLen );
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uint8_t Softuart_Read(Softuart *s);
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//define mapping from pin to functio mode
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typedef struct {
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uint32_t gpio_mux_name;
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uint8_t gpio_func;
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} softuart_reg_t;
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#endif /* SOFTUART_H_ */
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