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107 lines
2.3 KiB
107 lines
2.3 KiB
2 years ago
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#pragma once
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//
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// Streams -- in this library -- are instances of type STREAM.
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//
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// A stream can be used for receiving and sending bytes, generally
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// it's a pipe to a device.
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//
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// They are designed for printing numbers and strings, but can
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// also be used for general data transfer.
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//
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// Examples of streams:
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// "uart.h" -> declares global variable "uart" which is a pointer to the UART stream
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// "lcd.h" -> declares a global variable "lcd" (pointer to LCD scho stream)
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//
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// Streams help avoid code duplication, since the same functions can be used
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// to format and print data to different device types.
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//
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#include <stdlib.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <avr/pgmspace.h>
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/** Stream structure */
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typedef struct
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{
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void (*tx)(uint8_t b);
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uint8_t (*rx)(void);
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} STREAM;
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/** Send bytes to stream */
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void put_bytes(const STREAM *p, const uint8_t* str, uint16_t len);
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/** Print string into a stream */
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void put_str(const STREAM *p, const char *str);
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/** Print a programspace string into a stream */
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void put_str_P(const STREAM *p, const char* str);
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/** Put a char/byte. Basically the same as p->tx() */
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void put_c(const STREAM *p, uint8_t c);
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/** Send signed int8 */
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void put_u8(const STREAM *p, uint8_t num);
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/** Send unsigned int8 */
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void put_i8(const STREAM *p, int8_t num);
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/** Send unsigned int */
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void put_u16(const STREAM *p, uint16_t num);
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/** Send signed int */
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void put_i16(const STREAM *p, int16_t num);
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/** Send unsigned long */
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void put_u32(const STREAM *p, uint32_t num);
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/** Send signed long */
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void put_i32(const STREAM *p, int32_t num);
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/** Send unsigned int8 */
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void put_x8(const STREAM *p, uint8_t num);
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/** Send int as hex */
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void put_x16(const STREAM *p, uint16_t num);
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/** Send long as hex */
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void put_x32(const STREAM *p, uint32_t num);
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/** Send long long as hex */
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void put_x64(const STREAM *p, uint64_t num);
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// float variant doesn't make sense for 8-bit int
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/** Send unsigned int as float */
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void put_u16f(const STREAM *p, uint16_t num, uint8_t places);
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/** Send signed int as float */
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void put_i16f(const STREAM *p, int16_t num, uint8_t places);
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/** Send unsigned long as float */
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void put_u32f(const STREAM *p, uint32_t num, uint8_t places);
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/** Send signed long as float */
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void put_i32f(const STREAM *p, int32_t num, uint8_t places);
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/** Print CR LF */
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void put_nl(const STREAM *p);
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