| 1 | #ifndef __USART_H
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| 2 | #define __USART_H
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| 3 | //-----------------------------------------------------------------------------
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| 4 |
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| 5 | #include "typedefs.h"
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| 6 | #include "application.h"
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| 7 | #include "num_conversion.h"
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| 8 |
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| 9 | //-----------------------------------------------------------------------------
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| 10 | #define USART_RX_BUFFER_SIZE 32 // Receive buffer size
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| 11 | #define USART_TX_BUFFER_SIZE 5 // Receive buffer size. MUST not be larger 255
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| 12 |
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| 13 | #define USART_BAUDRATE 9600 // USART baudrate original
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| 14 | #define USART_USE_TX // Transmitter used?
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| 15 | #define USART_USE_RX // Receiver used?
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| 16 | #define USART_USE_RX_IRQ // RX interrupt used?
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| 17 | //#define USART_USE_UPPERCASE // Convert received chars to uppercase?
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| 18 | //-----------------------------------------------------------------------------
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| 19 |
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| 20 | #define USART_CHAR_BS 8
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| 21 | #define USART_CHAR_LF 10
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| 22 | #define USART_CHAR_CR 13
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| 23 | #define USART_CHAR_ESC 27
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| 24 | #define USART_CHAR_SPC 32
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| 25 | //-----------------------------------------------------------------------------
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| 26 |
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| 27 | #define USART_SET_BAUDRATE(br) (UBRRH = (U08)((((U32)F_CPU) /\
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| 28 | ((U32)br * 16) - 1) >> 8),\
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| 29 | UBRRL = (U08)(((U32)F_CPU) /\
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| 30 | ((U32)br * 16) - 1))
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| 31 | //-----------------------------------------------------------------------------
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| 32 |
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| 33 | // USART global variables
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| 34 | extern U08 usart_rx_buffer[USART_RX_BUFFER_SIZE];
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| 35 | extern U08 usart_tx_buffer[USART_TX_BUFFER_SIZE];
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| 36 | extern U08 usart_received_chars;
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| 37 |
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| 38 | extern U08 usart_tx_buffer_index;
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| 39 | extern U08 usart_last_char; // last received char
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| 40 |
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| 41 | // USART FLAGS
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| 42 | extern bool usart_tx_buffer_overflow; // true if usart_tx_buffer was full.
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| 43 |
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| 44 |
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| 45 |
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| 46 | extern bool usart_tx_buffer_overflow;
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| 47 | extern U08 usart_tx_buffer_index;
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| 48 | extern U08 usart_tx_buffer[USART_TX_BUFFER_SIZE];
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| 49 |
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| 50 | #ifdef USART_USE_RX_IRQ
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| 51 | extern U08 usart_rx_buffer[];
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| 52 | //U08 *usart_rx_buffer_ptr = &usart_rx_buffer[0];
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| 53 | extern U08 usart_received_chars;
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| 54 | extern volatile BOOL usart_rx_ready;
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| 55 | #endif
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| 56 |
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| 57 | //-----------------------------------------------------------------------------
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| 58 |
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| 59 | void usart_init(void);
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| 60 | void usart_write_char(U08 data);
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| 61 | void usart_write_crlf(void);
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| 62 | void usart_write_str(pU08 str);
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| 63 | void usart_writeln_str(pU08 str);
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| 64 | void usart_write_flash_str(fpU08 str);
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| 65 | void usart_writeln_flash_str(fpU08 str);
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| 66 | void usart_write_U08(U08 value,U08 digits);
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| 67 | void usart_write_S08(S08 value,U08 digits);
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| 68 | void usart_write_U08_hex(U08 value);
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| 69 | void usart_write_U08_bin(U08 value);
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| 70 | void usart_write_U16(U16 value,U08 digits);
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| 71 | void usart_write_S16(S16 value,U08 digits);
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| 72 | void usart_write_U16_hex(U16 value);
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| 73 | void usart_write_U32(U32 value,U08 digits);
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| 74 | void usart_write_S32(S32 value,U08 digits);
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| 75 | void usart_write_U32_hex(U32 value);
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| 76 | void usart_write_float(float value,U08 decimals,U08 digits);
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| 77 | //-----------------------------------------------------------------------------
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| 78 |
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| 79 | #endif
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