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https://github.com/openstenoproject/qmk
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84 lines
2.7 KiB
C
84 lines
2.7 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 config.h
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// /////////////////////////////////////////////////////////////////
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// ex.
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// #define SOFT_SERIAL_PIN ?? // ?? = D0,D1,D2,D3,E6
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// OPTIONAL: #define SELECT_SOFT_SERIAL_SPEED ? // ? = 1,2,3,4,5
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// // 1: about 137kbps (default)
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// // 2: about 75kbps
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// // 3: about 39kbps
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// // 4: about 26kbps
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// // 5: about 20kbps
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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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#define TID_LIMIT( table ) (sizeof(table) / sizeof(SSTD_t))
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// initiator is transaction start side
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void soft_serial_initiator_init(SSTD_t *sstd_table, int sstd_table_size);
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// target is interrupt accept side
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void soft_serial_target_init(SSTD_t *sstd_table, int sstd_table_size);
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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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#define TRANSACTION_TYPE_ERROR 0x4
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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 0x8
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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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