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https://github.com/openstenoproject/qmk
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80 lines
2.3 KiB
C
80 lines
2.3 KiB
C
#ifndef SOFT_SERIAL_H
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#define SOFT_SERIAL_H
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#include <stdbool.h>
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// /////////////////////////////////////////////////////////////////
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// Need Soft Serial defines in serial_config.h
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// /////////////////////////////////////////////////////////////////
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// ex.
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// #define SERIAL_PIN_DDR DDRD
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// #define SERIAL_PIN_PORT PORTD
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// #define SERIAL_PIN_INPUT PIND
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// #define SERIAL_PIN_MASK _BV(PD?) ?=0,2
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// #define SERIAL_PIN_INTERRUPT INT?_vect ?=0,2
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//
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// //// USE Simple API (OLD API, compatible with let's split serial.c)
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// ex.
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// #define SERIAL_SLAVE_BUFFER_LENGTH MATRIX_ROWS/2
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// #define SERIAL_MASTER_BUFFER_LENGTH 1
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//
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// //// USE flexible API (using multi-type transaction function)
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// #define SERIAL_USE_MULTI_TRANSACTION
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//
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// /////////////////////////////////////////////////////////////////
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#ifndef SERIAL_USE_MULTI_TRANSACTION
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/* --- USE Simple API (OLD API, compatible with let's split serial.c) */
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#if SERIAL_SLAVE_BUFFER_LENGTH > 0
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extern volatile uint8_t serial_slave_buffer[SERIAL_SLAVE_BUFFER_LENGTH];
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#endif
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#if SERIAL_MASTER_BUFFER_LENGTH > 0
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extern volatile uint8_t serial_master_buffer[SERIAL_MASTER_BUFFER_LENGTH];
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#endif
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void serial_master_init(void);
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void serial_slave_init(void);
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int serial_update_buffers(void);
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#endif // USE Simple API
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// Soft Serial Transaction Descriptor
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typedef struct _SSTD_t {
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uint8_t *status;
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uint8_t initiator2target_buffer_size;
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uint8_t *initiator2target_buffer;
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uint8_t target2initiator_buffer_size;
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uint8_t *target2initiator_buffer;
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} SSTD_t;
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// initiator is transaction start side
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void soft_serial_initiator_init(SSTD_t *sstd_table);
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// target is interrupt accept side
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void soft_serial_target_init(SSTD_t *sstd_table);
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// initiator resullt
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#define TRANSACTION_END 0
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#define TRANSACTION_NO_RESPONSE 0x1
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#define TRANSACTION_DATA_ERROR 0x2
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#ifndef SERIAL_USE_MULTI_TRANSACTION
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int soft_serial_transaction(void);
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#else
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int soft_serial_transaction(int sstd_index);
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#endif
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// target status
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// *SSTD_t.status has
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// initiator:
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// TRANSACTION_END
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// or TRANSACTION_NO_RESPONSE
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// or TRANSACTION_DATA_ERROR
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// target:
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// TRANSACTION_DATA_ERROR
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// or TRANSACTION_ACCEPTED
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#define TRANSACTION_ACCEPTED 0x4
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#ifdef SERIAL_USE_MULTI_TRANSACTION
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int soft_serial_get_and_clean_status(int sstd_index);
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#endif
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#endif /* SOFT_SERIAL_H */
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