serial.c update (#4423)
This commit is contained in:
Pekaso
Drashna Jaelre
parent
d8f090e559
commit
daf08f40f2
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@ -1,5 +1,10 @@
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/*
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* WARNING: be careful changing this code, it is very timing dependent
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*
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* 2018-10-28 checked
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* avr-gcc 4.9.2
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* avr-gcc 5.4.0
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* avr-gcc 7.3.0
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*/
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#ifndef F_CPU
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@ -14,10 +19,60 @@
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#include "serial.h"
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//#include <pro_micro.h>
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#ifdef USE_SERIAL
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#ifdef SOFT_SERIAL_PIN
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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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#ifdef __AVR_ATmega32U4__
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// if using ATmega32U4 I2C, can not use PD0 and PD1 in soft serial.
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#ifdef USE_I2C
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#if SOFT_SERIAL_PIN == D0 || SOFT_SERIAL_PIN == D1
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#error Using ATmega32U4 I2C, so can not use PD0, PD1
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#endif
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#endif
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#if SOFT_SERIAL_PIN >= D0 && SOFT_SERIAL_PIN <= D3
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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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#if SOFT_SERIAL_PIN == D0
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#define SERIAL_PIN_MASK _BV(PD0)
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#define EIMSK_BIT _BV(INT0)
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#define EICRx_BIT (~(_BV(ISC00) | _BV(ISC01)))
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#define SERIAL_PIN_INTERRUPT INT0_vect
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#elif SOFT_SERIAL_PIN == D1
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#define SERIAL_PIN_MASK _BV(PD1)
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#define EIMSK_BIT _BV(INT1)
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#define EICRx_BIT (~(_BV(ISC10) | _BV(ISC11)))
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#define SERIAL_PIN_INTERRUPT INT1_vect
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#elif SOFT_SERIAL_PIN == D2
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#define SERIAL_PIN_MASK _BV(PD2)
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#define EIMSK_BIT _BV(INT2)
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#define EICRx_BIT (~(_BV(ISC20) | _BV(ISC21)))
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#define SERIAL_PIN_INTERRUPT INT2_vect
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#elif SOFT_SERIAL_PIN == D3
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#define SERIAL_PIN_MASK _BV(PD3)
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#define EIMSK_BIT _BV(INT3)
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#define EICRx_BIT (~(_BV(ISC30) | _BV(ISC31)))
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#define SERIAL_PIN_INTERRUPT INT3_vect
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#endif
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#elif SOFT_SERIAL_PIN == E6
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#define SERIAL_PIN_DDR DDRE
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#define SERIAL_PIN_PORT PORTE
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#define SERIAL_PIN_INPUT PINE
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#define SERIAL_PIN_MASK _BV(PE6)
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#define EIMSK_BIT _BV(INT6)
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#define EICRx_BIT (~(_BV(ISC60) | _BV(ISC61)))
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#define SERIAL_PIN_INTERRUPT INT6_vect
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#else
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#error invalid SOFT_SERIAL_PIN value
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#endif
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#else
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#error serial.c now support ATmega32U4 only
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#endif
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//////////////// for backward compatibility ////////////////////////////////
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#if !defined(SERIAL_USE_SINGLE_TRANSACTION) && !defined(SERIAL_USE_MULTI_TRANSACTION)
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/* --- USE OLD API (compatible with let's split serial.c) */
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#if SERIAL_SLAVE_BUFFER_LENGTH > 0
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uint8_t volatile serial_slave_buffer[SERIAL_SLAVE_BUFFER_LENGTH] = {0};
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#endif
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@ -42,56 +97,118 @@ SSTD_t transactions[] = {
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};
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void serial_master_init(void)
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{ soft_serial_initiator_init(transactions); }
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{ soft_serial_initiator_init(transactions, TID_LIMIT(transactions)); }
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void serial_slave_init(void)
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{ soft_serial_target_init(transactions); }
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{ soft_serial_target_init(transactions, TID_LIMIT(transactions)); }
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// 0 => no error
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// 1 => slave did not respond
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// 2 => checksum error
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int serial_update_buffers()
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{ return soft_serial_transaction(); }
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{
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int result;
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result = soft_serial_transaction();
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return result;
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}
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#endif // Simple API (OLD API, compatible with let's split serial.c)
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#endif // end of OLD API (compatible with let's split serial.c)
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////////////////////////////////////////////////////////////////////////////
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#define ALWAYS_INLINE __attribute__((always_inline))
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#define NO_INLINE __attribute__((noinline))
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#define _delay_sub_us(x) __builtin_avr_delay_cycles(x)
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// Serial pulse period in microseconds.
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#define TID_SEND_ADJUST 14
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// parity check
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#define ODD_PARITY 1
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#define EVEN_PARITY 0
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#define PARITY EVEN_PARITY
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#define SELECT_SERIAL_SPEED 1
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#if SELECT_SERIAL_SPEED == 0
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#ifdef SERIAL_DELAY
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// custom setup in config.h
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// #define TID_SEND_ADJUST 2
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// #define SERIAL_DELAY 6 // micro sec
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// #define READ_WRITE_START_ADJUST 30 // cycles
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// #define READ_WRITE_WIDTH_ADJUST 8 // cycles
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#else
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// ============ Standard setups ============
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#ifndef SELECT_SOFT_SERIAL_SPEED
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#define SELECT_SOFT_SERIAL_SPEED 1
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// 0: about 189kbps
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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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#endif
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#if __GNUC__ < 6
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#define TID_SEND_ADJUST 14
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#else
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#define TID_SEND_ADJUST 2
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#endif
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#if SELECT_SOFT_SERIAL_SPEED == 0
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// Very High speed
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#define SERIAL_DELAY 4 // micro sec
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#if __GNUC__ < 6
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#define READ_WRITE_START_ADJUST 33 // cycles
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#define READ_WRITE_WIDTH_ADJUST 3 // cycles
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#elif SELECT_SERIAL_SPEED == 1
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#else
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#define READ_WRITE_START_ADJUST 34 // cycles
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#define READ_WRITE_WIDTH_ADJUST 7 // cycles
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#endif
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#elif SELECT_SOFT_SERIAL_SPEED == 1
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// High speed
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#define SERIAL_DELAY 6 // micro sec
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#if __GNUC__ < 6
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#define READ_WRITE_START_ADJUST 30 // cycles
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#define READ_WRITE_WIDTH_ADJUST 3 // cycles
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#elif SELECT_SERIAL_SPEED == 2
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#else
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#define READ_WRITE_START_ADJUST 33 // cycles
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#define READ_WRITE_WIDTH_ADJUST 7 // cycles
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#endif
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#elif SELECT_SOFT_SERIAL_SPEED == 2
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// Middle speed
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#define SERIAL_DELAY 12 // micro sec
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#define READ_WRITE_START_ADJUST 30 // cycles
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#if __GNUC__ < 6
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#define READ_WRITE_WIDTH_ADJUST 3 // cycles
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#elif SELECT_SERIAL_SPEED == 3
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#else
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#define READ_WRITE_WIDTH_ADJUST 7 // cycles
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#endif
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#elif SELECT_SOFT_SERIAL_SPEED == 3
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// Low speed
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#define SERIAL_DELAY 24 // micro sec
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#define READ_WRITE_START_ADJUST 30 // cycles
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#if __GNUC__ < 6
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#define READ_WRITE_WIDTH_ADJUST 3 // cycles
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#elif SELECT_SERIAL_SPEED == 4
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#else
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#define READ_WRITE_WIDTH_ADJUST 7 // cycles
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#endif
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#elif SELECT_SOFT_SERIAL_SPEED == 4
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// Very Low speed
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#define SERIAL_DELAY 50 // micro sec
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#define SERIAL_DELAY 36 // micro sec
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#define READ_WRITE_START_ADJUST 30 // cycles
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#if __GNUC__ < 6
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#define READ_WRITE_WIDTH_ADJUST 3 // cycles
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#else
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#define READ_WRITE_WIDTH_ADJUST 7 // cycles
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#endif
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#elif SELECT_SOFT_SERIAL_SPEED == 5
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// Ultra Low speed
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#define SERIAL_DELAY 48 // micro sec
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#define READ_WRITE_START_ADJUST 30 // cycles
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#if __GNUC__ < 6
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#define READ_WRITE_WIDTH_ADJUST 3 // cycles
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#else
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#define READ_WRITE_WIDTH_ADJUST 7 // cycles
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#endif
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#else
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#error Illegal Serial Speed
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#endif
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#error invalid SELECT_SOFT_SERIAL_SPEED value
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#endif /* SELECT_SOFT_SERIAL_SPEED */
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#endif /* SERIAL_DELAY */
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#define SERIAL_DELAY_HALF1 (SERIAL_DELAY/2)
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#define SERIAL_DELAY_HALF2 (SERIAL_DELAY - SERIAL_DELAY/2)
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@ -105,17 +222,21 @@ int serial_update_buffers()
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#endif
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static SSTD_t *Transaction_table = NULL;
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static uint8_t Transaction_table_size = 0;
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inline static void serial_delay(void) ALWAYS_INLINE;
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inline static
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void serial_delay(void) {
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_delay_us(SERIAL_DELAY);
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}
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inline static void serial_delay_half1(void) ALWAYS_INLINE;
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inline static
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void serial_delay_half1(void) {
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_delay_us(SERIAL_DELAY_HALF1);
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}
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inline static void serial_delay_half2(void) ALWAYS_INLINE;
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inline static
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void serial_delay_half2(void) {
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_delay_us(SERIAL_DELAY_HALF2);
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@ -135,6 +256,7 @@ void serial_input_with_pullup(void) {
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SERIAL_PIN_PORT |= SERIAL_PIN_MASK;
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}
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inline static uint8_t serial_read_pin(void) ALWAYS_INLINE;
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inline static
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uint8_t serial_read_pin(void) {
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return !!(SERIAL_PIN_INPUT & SERIAL_PIN_MASK);
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@ -152,30 +274,28 @@ void serial_high(void) {
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SERIAL_PIN_PORT |= SERIAL_PIN_MASK;
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}
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void soft_serial_initiator_init(SSTD_t *sstd_table)
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void soft_serial_initiator_init(SSTD_t *sstd_table, int sstd_table_size)
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{
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Transaction_table = sstd_table;
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Transaction_table_size = (uint8_t)sstd_table_size;
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serial_output();
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serial_high();
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}
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void soft_serial_target_init(SSTD_t *sstd_table)
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void soft_serial_target_init(SSTD_t *sstd_table, int sstd_table_size)
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{
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Transaction_table = sstd_table;
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Transaction_table_size = (uint8_t)sstd_table_size;
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serial_input_with_pullup();
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#if SERIAL_PIN_MASK == _BV(PD0)
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// Enable INT0
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EIMSK |= _BV(INT0);
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// Trigger on falling edge of INT0
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EICRA &= ~(_BV(ISC00) | _BV(ISC01));
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#elif SERIAL_PIN_MASK == _BV(PD2)
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// Enable INT2
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EIMSK |= _BV(INT2);
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// Trigger on falling edge of INT2
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EICRA &= ~(_BV(ISC20) | _BV(ISC21));
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// Enable INT0-INT3,INT6
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EIMSK |= EIMSK_BIT;
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#if SERIAL_PIN_MASK == _BV(PE6)
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// Trigger on falling edge of INT6
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EICRB &= EICRx_BIT;
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#else
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#error unknown SERIAL_PIN_MASK value
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// Trigger on falling edge of INT0-INT3
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EICRA &= EICRx_BIT;
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#endif
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}
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@ -191,7 +311,7 @@ void sync_recv(void) {
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}
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// Used by the reciver to send a synchronization signal to the sender.
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static void sync_send(void)NO_INLINE;
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static void sync_send(void) NO_INLINE;
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static
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void sync_send(void) {
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serial_low();
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@ -205,7 +325,7 @@ static uint8_t serial_read_chunk(uint8_t *pterrcount, uint8_t bit) {
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uint8_t byte, i, p, pb;
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_delay_sub_us(READ_WRITE_START_ADJUST);
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for( i = 0, byte = 0, p = 0; i < bit; i++ ) {
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for( i = 0, byte = 0, p = PARITY; i < bit; i++ ) {
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serial_delay_half1(); // read the middle of pulses
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if( serial_read_pin() ) {
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byte = (byte << 1) | 1; p ^= 1;
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@ -230,7 +350,7 @@ static uint8_t serial_read_chunk(uint8_t *pterrcount, uint8_t bit) {
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void serial_write_chunk(uint8_t data, uint8_t bit) NO_INLINE;
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void serial_write_chunk(uint8_t data, uint8_t bit) {
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uint8_t b, p;
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for( p = 0, b = 1<<(bit-1); b ; b >>= 1) {
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for( p = PARITY, b = 1<<(bit-1); b ; b >>= 1) {
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if(data & b) {
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serial_high(); p ^= 1;
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} else {
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@ -288,6 +408,13 @@ void change_reciver2sender(void) {
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serial_delay_half1(); //4
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}
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static inline uint8_t nibble_bits_count(uint8_t bits)
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{
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bits = (bits & 0x5) + (bits >> 1 & 0x5);
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bits = (bits & 0x3) + (bits >> 2 & 0x3);
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return bits;
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}
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// interrupt handle to be used by the target device
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ISR(SERIAL_PIN_INTERRUPT) {
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@ -297,12 +424,15 @@ ISR(SERIAL_PIN_INTERRUPT) {
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SSTD_t *trans = Transaction_table;
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#else
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// recive transaction table index
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uint8_t tid;
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uint8_t tid, bits;
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uint8_t pecount = 0;
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sync_recv();
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tid = serial_read_chunk(&pecount,4);
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if(pecount> 0)
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bits = serial_read_chunk(&pecount,7);
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tid = bits>>3;
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bits = (bits&7) != nibble_bits_count(tid);
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if( bits || pecount> 0 || tid > Transaction_table_size ) {
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return;
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}
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serial_delay_half1();
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serial_high(); // response step1 low->high
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@ -349,6 +479,8 @@ int soft_serial_transaction(void) {
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SSTD_t *trans = Transaction_table;
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#else
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int soft_serial_transaction(int sstd_index) {
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if( sstd_index > Transaction_table_size )
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return TRANSACTION_TYPE_ERROR;
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SSTD_t *trans = &Transaction_table[sstd_index];
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#endif
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cli();
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@ -375,9 +507,10 @@ int soft_serial_transaction(int sstd_index) {
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#else
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// send transaction table index
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int tid = (sstd_index<<3) | (7 & nibble_bits_count(sstd_index));
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sync_send();
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_delay_sub_us(TID_SEND_ADJUST);
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serial_write_chunk(sstd_index, 4);
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serial_write_chunk(tid, 7);
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serial_delay_half1();
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// wait for the target response (step1 low->high)
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@ -442,3 +575,16 @@ int soft_serial_get_and_clean_status(int sstd_index) {
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#endif
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#endif
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// Helix serial.c history
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// 2018-1-29 fork from let's split and add PD2, modify sync_recv() (#2308, bceffdefc)
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// 2018-6-28 bug fix master to slave comm and speed up (#3255, 1038bbef4)
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// (adjusted with avr-gcc 4.9.2)
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// 2018-7-13 remove USE_SERIAL_PD2 macro (#3374, f30d6dd78)
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// (adjusted with avr-gcc 4.9.2)
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// 2018-8-11 add support multi-type transaction (#3608, feb5e4aae)
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// (adjusted with avr-gcc 4.9.2)
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// 2018-10-21 fix serial and RGB animation conflict (#4191, 4665e4fff)
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// (adjusted with avr-gcc 7.3.0)
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// 2018-10-28 re-adjust compiler depend value of delay (#4269, 8517f8a66)
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// (adjusted with avr-gcc 5.4.0, 7.3.0)
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@ -4,40 +4,47 @@
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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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// Need Soft Serial defines in 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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// #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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// //// USE 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 NEW API
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// //// USE simple API (using signle-type transaction function)
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// #define SERIAL_USE_SINGLE_TRANSACTION
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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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//////////////// for backward compatibility ////////////////////////////////
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#if !defined(SERIAL_USE_SINGLE_TRANSACTION) && !defined(SERIAL_USE_MULTI_TRANSACTION)
|
||||
/* --- USE OLD API (compatible with let's split serial.c) */
|
||||
#if SERIAL_SLAVE_BUFFER_LENGTH > 0
|
||||
extern volatile uint8_t serial_slave_buffer[SERIAL_SLAVE_BUFFER_LENGTH];
|
||||
#endif
|
||||
#if SERIAL_MASTER_BUFFER_LENGTH > 0
|
||||
extern volatile uint8_t serial_master_buffer[SERIAL_MASTER_BUFFER_LENGTH];
|
||||
#endif
|
||||
|
||||
void serial_master_init(void);
|
||||
void serial_slave_init(void);
|
||||
int serial_update_buffers(void);
|
||||
void serial_master_init(void);
|
||||
void serial_slave_init(void);
|
||||
int serial_update_buffers(void);
|
||||
|
||||
#endif // USE Simple API
|
||||
#endif // end of USE OLD API
|
||||
////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
// Soft Serial Transaction Descriptor
|
||||
typedef struct _SSTD_t {
|
||||
|
|
@ -47,16 +54,18 @@ typedef struct _SSTD_t {
|
|||
uint8_t target2initiator_buffer_size;
|
||||
uint8_t *target2initiator_buffer;
|
||||
} SSTD_t;
|
||||
#define TID_LIMIT( table ) (sizeof(table) / sizeof(SSTD_t))
|
||||
|
||||
// initiator is transaction start side
|
||||
void soft_serial_initiator_init(SSTD_t *sstd_table);
|
||||
void soft_serial_initiator_init(SSTD_t *sstd_table, int sstd_table_size);
|
||||
// target is interrupt accept side
|
||||
void soft_serial_target_init(SSTD_t *sstd_table);
|
||||
void soft_serial_target_init(SSTD_t *sstd_table, int sstd_table_size);
|
||||
|
||||
// initiator resullt
|
||||
#define TRANSACTION_END 0
|
||||
#define TRANSACTION_NO_RESPONSE 0x1
|
||||
#define TRANSACTION_DATA_ERROR 0x2
|
||||
#define TRANSACTION_TYPE_ERROR 0x4
|
||||
#ifndef SERIAL_USE_MULTI_TRANSACTION
|
||||
int soft_serial_transaction(void);
|
||||
#else
|
||||
|
|
@ -72,7 +81,7 @@ int soft_serial_transaction(int sstd_index);
|
|||
// target:
|
||||
// TRANSACTION_DATA_ERROR
|
||||
// or TRANSACTION_ACCEPTED
|
||||
#define TRANSACTION_ACCEPTED 0x4
|
||||
#define TRANSACTION_ACCEPTED 0x8
|
||||
#ifdef SERIAL_USE_MULTI_TRANSACTION
|
||||
int soft_serial_get_and_clean_status(int sstd_index);
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -2,11 +2,7 @@
|
|||
#define SOFT_SERIAL_CONFIG_H
|
||||
|
||||
/* Soft Serial defines */
|
||||
#define SERIAL_PIN_DDR DDRD
|
||||
#define SERIAL_PIN_PORT PORTD
|
||||
#define SERIAL_PIN_INPUT PIND
|
||||
#define SERIAL_PIN_MASK _BV(PD2)
|
||||
#define SERIAL_PIN_INTERRUPT INT2_vect
|
||||
#define SOFT_SERIAL_PIN D2
|
||||
|
||||
#define SERIAL_SLAVE_BUFFER_LENGTH MATRIX_ROWS/2
|
||||
#define SERIAL_MASTER_BUFFER_LENGTH 1
|
||||
|
|
|
|||
Loading…
Reference in New Issue