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This commit is contained in:
skullY 2019-08-30 11:19:03 -07:00 • committed by skullydazed
parent 61af76a10d
commit b624f32f94
502 changed files with 32259 additions and 39062 deletions
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716
quantum/split_common/serial.c
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@ -8,7 +8,7 @@
*/
#ifndef F_CPU
#define F_CPU 16000000
# define F_CPU 16000000
#endif
#include <avr/io.h>
@ -21,252 +21,224 @@
#ifdef SOFT_SERIAL_PIN
#ifdef __AVR_ATmega32U4__
// if using ATmega32U4 I2C, can not use PD0 and PD1 in soft serial.
#ifdef USE_AVR_I2C
#if SOFT_SERIAL_PIN == D0 || SOFT_SERIAL_PIN == D1
#error Using ATmega32U4 I2C, so can not use PD0, PD1
#endif
#endif
# ifdef __AVR_ATmega32U4__
// if using ATmega32U4 I2C, can not use PD0 and PD1 in soft serial.
# ifdef USE_AVR_I2C
# if SOFT_SERIAL_PIN == D0 || SOFT_SERIAL_PIN == D1
# error Using ATmega32U4 I2C, so can not use PD0, PD1
# endif
# endif
#define setPinInputHigh(pin) (DDRx_ADDRESS(pin) &= ~_BV((pin) & 0xF), \
PORTx_ADDRESS(pin) |= _BV((pin) & 0xF))
#define setPinOutput(pin) (DDRx_ADDRESS(pin) |= _BV((pin) & 0xF))
#define writePinHigh(pin) (PORTx_ADDRESS(pin) |= _BV((pin) & 0xF))
#define writePinLow(pin) (PORTx_ADDRESS(pin) &= ~_BV((pin) & 0xF))
#define readPin(pin) ((bool)(PINx_ADDRESS(pin) & _BV((pin) & 0xF)))
# define setPinInputHigh(pin) (DDRx_ADDRESS(pin) &= ~_BV((pin)&0xF), PORTx_ADDRESS(pin) |= _BV((pin)&0xF))
# define setPinOutput(pin) (DDRx_ADDRESS(pin) |= _BV((pin)&0xF))
# define writePinHigh(pin) (PORTx_ADDRESS(pin) |= _BV((pin)&0xF))
# define writePinLow(pin) (PORTx_ADDRESS(pin) &= ~_BV((pin)&0xF))
# define readPin(pin) ((bool)(PINx_ADDRESS(pin) & _BV((pin)&0xF)))
#if SOFT_SERIAL_PIN >= D0 && SOFT_SERIAL_PIN <= D3
#if SOFT_SERIAL_PIN == D0
#define EIMSK_BIT _BV(INT0)
#define EICRx_BIT (~(_BV(ISC00) | _BV(ISC01)))
#define SERIAL_PIN_INTERRUPT INT0_vect
#elif SOFT_SERIAL_PIN == D1
#define EIMSK_BIT _BV(INT1)
#define EICRx_BIT (~(_BV(ISC10) | _BV(ISC11)))
#define SERIAL_PIN_INTERRUPT INT1_vect
#elif SOFT_SERIAL_PIN == D2
#define EIMSK_BIT _BV(INT2)
#define EICRx_BIT (~(_BV(ISC20) | _BV(ISC21)))
#define SERIAL_PIN_INTERRUPT INT2_vect
#elif SOFT_SERIAL_PIN == D3
#define EIMSK_BIT _BV(INT3)
#define EICRx_BIT (~(_BV(ISC30) | _BV(ISC31)))
#define SERIAL_PIN_INTERRUPT INT3_vect
#endif
#elif SOFT_SERIAL_PIN == E6
#define EIMSK_BIT _BV(INT6)
#define EICRx_BIT (~(_BV(ISC60) | _BV(ISC61)))
#define SERIAL_PIN_INTERRUPT INT6_vect
#else
#error invalid SOFT_SERIAL_PIN value
#endif
# if SOFT_SERIAL_PIN >= D0 && SOFT_SERIAL_PIN <= D3
# if SOFT_SERIAL_PIN == D0
# define EIMSK_BIT _BV(INT0)
# define EICRx_BIT (~(_BV(ISC00) | _BV(ISC01)))
# define SERIAL_PIN_INTERRUPT INT0_vect
# elif SOFT_SERIAL_PIN == D1
# define EIMSK_BIT _BV(INT1)
# define EICRx_BIT (~(_BV(ISC10) | _BV(ISC11)))
# define SERIAL_PIN_INTERRUPT INT1_vect
# elif SOFT_SERIAL_PIN == D2
# define EIMSK_BIT _BV(INT2)
# define EICRx_BIT (~(_BV(ISC20) | _BV(ISC21)))
# define SERIAL_PIN_INTERRUPT INT2_vect
# elif SOFT_SERIAL_PIN == D3
# define EIMSK_BIT _BV(INT3)
# define EICRx_BIT (~(_BV(ISC30) | _BV(ISC31)))
# define SERIAL_PIN_INTERRUPT INT3_vect
# endif
# elif SOFT_SERIAL_PIN == E6
# define EIMSK_BIT _BV(INT6)
# define EICRx_BIT (~(_BV(ISC60) | _BV(ISC61)))
# define SERIAL_PIN_INTERRUPT INT6_vect
# else
# error invalid SOFT_SERIAL_PIN value
# endif
#else
#error serial.c now support ATmega32U4 only
#endif
# else
# error serial.c now support ATmega32U4 only
# endif
#define ALWAYS_INLINE __attribute__((always_inline))
#define NO_INLINE __attribute__((noinline))
#define _delay_sub_us(x) __builtin_avr_delay_cycles(x)
# define ALWAYS_INLINE __attribute__((always_inline))
# define NO_INLINE __attribute__((noinline))
# define _delay_sub_us(x) __builtin_avr_delay_cycles(x)
// parity check
#define ODD_PARITY 1
#define EVEN_PARITY 0
#define PARITY EVEN_PARITY
# define ODD_PARITY 1
# define EVEN_PARITY 0
# define PARITY EVEN_PARITY
#ifdef SERIAL_DELAY
// custom setup in config.h
// #define TID_SEND_ADJUST 2
// #define SERIAL_DELAY 6 // micro sec
// #define READ_WRITE_START_ADJUST 30 // cycles
// #define READ_WRITE_WIDTH_ADJUST 8 // cycles
#else
# ifdef SERIAL_DELAY
// custom setup in config.h
// #define TID_SEND_ADJUST 2
// #define SERIAL_DELAY 6 // micro sec
// #define READ_WRITE_START_ADJUST 30 // cycles
// #define READ_WRITE_WIDTH_ADJUST 8 // cycles
# else
// ============ Standard setups ============
#ifndef SELECT_SOFT_SERIAL_SPEED
#define SELECT_SOFT_SERIAL_SPEED 1
# ifndef SELECT_SOFT_SERIAL_SPEED
# define SELECT_SOFT_SERIAL_SPEED 1
// 0: about 189kbps (Experimental only)
// 1: about 137kbps (default)
// 2: about 75kbps
// 3: about 39kbps
// 4: about 26kbps
// 5: about 20kbps
#endif
# endif
#if __GNUC__ < 6
#define TID_SEND_ADJUST 14
#else
#define TID_SEND_ADJUST 2
#endif
# if __GNUC__ < 6
# define TID_SEND_ADJUST 14
# else
# define TID_SEND_ADJUST 2
# endif
#if SELECT_SOFT_SERIAL_SPEED == 0
// Very High speed
#define SERIAL_DELAY 4 // micro sec
#if __GNUC__ < 6
#define READ_WRITE_START_ADJUST 33 // cycles
#define READ_WRITE_WIDTH_ADJUST 3 // cycles
#else
#define READ_WRITE_START_ADJUST 34 // cycles
#define READ_WRITE_WIDTH_ADJUST 7 // cycles
#endif
#elif SELECT_SOFT_SERIAL_SPEED == 1
// High speed
#define SERIAL_DELAY 6 // micro sec
#if __GNUC__ < 6
#define READ_WRITE_START_ADJUST 30 // cycles
#define READ_WRITE_WIDTH_ADJUST 3 // cycles
#else
#define READ_WRITE_START_ADJUST 33 // cycles
#define READ_WRITE_WIDTH_ADJUST 7 // cycles
#endif
#elif SELECT_SOFT_SERIAL_SPEED == 2
// Middle speed
#define SERIAL_DELAY 12 // micro sec
#define READ_WRITE_START_ADJUST 30 // cycles
#if __GNUC__ < 6
#define READ_WRITE_WIDTH_ADJUST 3 // cycles
#else
#define READ_WRITE_WIDTH_ADJUST 7 // cycles
#endif
#elif SELECT_SOFT_SERIAL_SPEED == 3
// Low speed
#define SERIAL_DELAY 24 // micro sec
#define READ_WRITE_START_ADJUST 30 // cycles
#if __GNUC__ < 6
#define READ_WRITE_WIDTH_ADJUST 3 // cycles
#else
#define READ_WRITE_WIDTH_ADJUST 7 // cycles
#endif
#elif SELECT_SOFT_SERIAL_SPEED == 4
// Very Low speed
#define SERIAL_DELAY 36 // micro sec
#define READ_WRITE_START_ADJUST 30 // cycles
#if __GNUC__ < 6
#define READ_WRITE_WIDTH_ADJUST 3 // cycles
#else
#define READ_WRITE_WIDTH_ADJUST 7 // cycles
#endif
#elif SELECT_SOFT_SERIAL_SPEED == 5
// Ultra Low speed
#define SERIAL_DELAY 48 // micro sec
#define READ_WRITE_START_ADJUST 30 // cycles
#if __GNUC__ < 6
#define READ_WRITE_WIDTH_ADJUST 3 // cycles
#else
#define READ_WRITE_WIDTH_ADJUST 7 // cycles
#endif
#else
#error invalid SELECT_SOFT_SERIAL_SPEED value
#endif /* SELECT_SOFT_SERIAL_SPEED */
#endif /* SERIAL_DELAY */
# if SELECT_SOFT_SERIAL_SPEED == 0
// Very High speed
# define SERIAL_DELAY 4 // micro sec
# if __GNUC__ < 6
# define READ_WRITE_START_ADJUST 33 // cycles
# define READ_WRITE_WIDTH_ADJUST 3 // cycles
# else
# define READ_WRITE_START_ADJUST 34 // cycles
# define READ_WRITE_WIDTH_ADJUST 7 // cycles
# endif
# elif SELECT_SOFT_SERIAL_SPEED == 1
// High speed
# define SERIAL_DELAY 6 // micro sec
# if __GNUC__ < 6
# define READ_WRITE_START_ADJUST 30 // cycles
# define READ_WRITE_WIDTH_ADJUST 3 // cycles
# else
# define READ_WRITE_START_ADJUST 33 // cycles
# define READ_WRITE_WIDTH_ADJUST 7 // cycles
# endif
# elif SELECT_SOFT_SERIAL_SPEED == 2
// Middle speed
# define SERIAL_DELAY 12 // micro sec
# define READ_WRITE_START_ADJUST 30 // cycles
# if __GNUC__ < 6
# define READ_WRITE_WIDTH_ADJUST 3 // cycles
# else
# define READ_WRITE_WIDTH_ADJUST 7 // cycles
# endif
# elif SELECT_SOFT_SERIAL_SPEED == 3
// Low speed
# define SERIAL_DELAY 24 // micro sec
# define READ_WRITE_START_ADJUST 30 // cycles
# if __GNUC__ < 6
# define READ_WRITE_WIDTH_ADJUST 3 // cycles
# else
# define READ_WRITE_WIDTH_ADJUST 7 // cycles
# endif
# elif SELECT_SOFT_SERIAL_SPEED == 4
// Very Low speed
# define SERIAL_DELAY 36 // micro sec
# define READ_WRITE_START_ADJUST 30 // cycles
# if __GNUC__ < 6
# define READ_WRITE_WIDTH_ADJUST 3 // cycles
# else
# define READ_WRITE_WIDTH_ADJUST 7 // cycles
# endif
# elif SELECT_SOFT_SERIAL_SPEED == 5
// Ultra Low speed
# define SERIAL_DELAY 48 // micro sec
# define READ_WRITE_START_ADJUST 30 // cycles
# if __GNUC__ < 6
# define READ_WRITE_WIDTH_ADJUST 3 // cycles
# else
# define READ_WRITE_WIDTH_ADJUST 7 // cycles
# endif
# else
# error invalid SELECT_SOFT_SERIAL_SPEED value
# endif /* SELECT_SOFT_SERIAL_SPEED */
# endif /* SERIAL_DELAY */
#define SERIAL_DELAY_HALF1 (SERIAL_DELAY/2)
#define SERIAL_DELAY_HALF2 (SERIAL_DELAY - SERIAL_DELAY/2)
# define SERIAL_DELAY_HALF1 (SERIAL_DELAY / 2)
# define SERIAL_DELAY_HALF2 (SERIAL_DELAY - SERIAL_DELAY / 2)
#define SLAVE_INT_WIDTH_US 1
#ifndef SERIAL_USE_MULTI_TRANSACTION
#define SLAVE_INT_RESPONSE_TIME SERIAL_DELAY
#else
#define SLAVE_INT_ACK_WIDTH_UNIT 2
#define SLAVE_INT_ACK_WIDTH 4
#endif
# define SLAVE_INT_WIDTH_US 1
# ifndef SERIAL_USE_MULTI_TRANSACTION
# define SLAVE_INT_RESPONSE_TIME SERIAL_DELAY
# else
# define SLAVE_INT_ACK_WIDTH_UNIT 2
# define SLAVE_INT_ACK_WIDTH 4
# endif
static SSTD_t *Transaction_table = NULL;
static SSTD_t *Transaction_table = NULL;
static uint8_t Transaction_table_size = 0;
inline static void serial_delay(void) ALWAYS_INLINE;
inline static
void serial_delay(void) {
_delay_us(SERIAL_DELAY);
}
inline static void serial_delay(void) { _delay_us(SERIAL_DELAY); }
inline static void serial_delay_half1(void) ALWAYS_INLINE;
inline static
void serial_delay_half1(void) {
_delay_us(SERIAL_DELAY_HALF1);
}
inline static void serial_delay_half1(void) { _delay_us(SERIAL_DELAY_HALF1); }
inline static void serial_delay_half2(void) ALWAYS_INLINE;
inline static
void serial_delay_half2(void) {
_delay_us(SERIAL_DELAY_HALF2);
}
inline static void serial_delay_half2(void) { _delay_us(SERIAL_DELAY_HALF2); }
inline static void serial_output(void) ALWAYS_INLINE;
inline static
void serial_output(void) {
setPinOutput(SOFT_SERIAL_PIN);
}
inline static void serial_output(void) { setPinOutput(SOFT_SERIAL_PIN); }
// make the serial pin an input with pull-up resistor
inline static void serial_input_with_pullup(void) ALWAYS_INLINE;
inline static
void serial_input_with_pullup(void) {
setPinInputHigh(SOFT_SERIAL_PIN);
}
inline static void serial_input_with_pullup(void) { setPinInputHigh(SOFT_SERIAL_PIN); }
inline static uint8_t serial_read_pin(void) ALWAYS_INLINE;
inline static
uint8_t serial_read_pin(void) {
return !! readPin(SOFT_SERIAL_PIN);
}
inline static uint8_t serial_read_pin(void) { return !!readPin(SOFT_SERIAL_PIN); }
inline static void serial_low(void) ALWAYS_INLINE;
inline static
void serial_low(void) {
writePinLow(SOFT_SERIAL_PIN);
}
inline static void serial_low(void) { writePinLow(SOFT_SERIAL_PIN); }
inline static void serial_high(void) ALWAYS_INLINE;
inline static
void serial_high(void) {
writePinHigh(SOFT_SERIAL_PIN);
}
inline static void serial_high(void) { writePinHigh(SOFT_SERIAL_PIN); }
void soft_serial_initiator_init(SSTD_t *sstd_table, int sstd_table_size)
{
Transaction_table = sstd_table;
void soft_serial_initiator_init(SSTD_t *sstd_table, int sstd_table_size) {
Transaction_table = sstd_table;
Transaction_table_size = (uint8_t)sstd_table_size;
serial_output();
serial_high();
}
void soft_serial_target_init(SSTD_t *sstd_table, int sstd_table_size)
{
Transaction_table = sstd_table;
void soft_serial_target_init(SSTD_t *sstd_table, int sstd_table_size) {
Transaction_table = sstd_table;
Transaction_table_size = (uint8_t)sstd_table_size;
serial_input_with_pullup();
// Enable INT0-INT3,INT6
EIMSK |= EIMSK_BIT;
#if SOFT_SERIAL_PIN == E6
# if SOFT_SERIAL_PIN == E6
// Trigger on falling edge of INT6
EICRB &= EICRx_BIT;
#else
# else
// Trigger on falling edge of INT0-INT3
EICRA &= EICRx_BIT;
#endif
# endif
}
// Used by the sender to synchronize timing with the reciver.
static void sync_recv(void) NO_INLINE;
static
void sync_recv(void) {
for (uint8_t i = 0; i < SERIAL_DELAY*5 && serial_read_pin(); i++ ) {
}
// This shouldn't hang if the target disconnects because the
// serial line will float to high if the target does disconnect.
while (!serial_read_pin());
static void sync_recv(void) {
for (uint8_t i = 0; i < SERIAL_DELAY * 5 && serial_read_pin(); i++) {
}
// This shouldn't hang if the target disconnects because the
// serial line will float to high if the target does disconnect.
while (!serial_read_pin())
;
}
// Used by the reciver to send a synchronization signal to the sender.
static void sync_send(void) NO_INLINE;
static
void sync_send(void) {
serial_low();
serial_delay();
serial_high();
static void sync_send(void) {
serial_low();
serial_delay();
serial_high();
}
// Reads a byte from the serial line
@ -274,92 +246,94 @@ static uint8_t serial_read_chunk(uint8_t *pterrcount, uint8_t bit) NO_INLINE;
static uint8_t serial_read_chunk(uint8_t *pterrcount, uint8_t bit) {
uint8_t byte, i, p, pb;
_delay_sub_us(READ_WRITE_START_ADJUST);
for( i = 0, byte = 0, p = PARITY; i < bit; i++ ) {
serial_delay_half1(); // read the middle of pulses
if( serial_read_pin() ) {
byte = (byte << 1) | 1; p ^= 1;
} else {
byte = (byte << 1) | 0; p ^= 0;
}
_delay_sub_us(READ_WRITE_WIDTH_ADJUST);
serial_delay_half2();
}
/* recive parity bit */
serial_delay_half1(); // read the middle of pulses
pb = serial_read_pin();
_delay_sub_us(READ_WRITE_WIDTH_ADJUST);
serial_delay_half2();
_delay_sub_us(READ_WRITE_START_ADJUST);
for (i = 0, byte = 0, p = PARITY; i < bit; i++) {
serial_delay_half1(); // read the middle of pulses
if (serial_read_pin()) {
byte = (byte << 1) | 1;
p ^= 1;
} else {
byte = (byte << 1) | 0;
p ^= 0;
}
_delay_sub_us(READ_WRITE_WIDTH_ADJUST);
serial_delay_half2();
}
/* recive parity bit */
serial_delay_half1(); // read the middle of pulses
pb = serial_read_pin();
_delay_sub_us(READ_WRITE_WIDTH_ADJUST);
serial_delay_half2();
*pterrcount += (p != pb)? 1 : 0;
*pterrcount += (p != pb) ? 1 : 0;
return byte;
return byte;
}
// Sends a byte with MSB ordering
void serial_write_chunk(uint8_t data, uint8_t bit) NO_INLINE;
void serial_write_chunk(uint8_t data, uint8_t bit) {
uint8_t b, p;
for( p = PARITY, b = 1<<(bit-1); b ; b >>= 1) {
if(data & b) {
serial_high(); p ^= 1;
for (p = PARITY, b = 1 << (bit - 1); b; b >>= 1) {
if (data & b) {
serial_high();
p ^= 1;
} else {
serial_low(); p ^= 0;
serial_low();
p ^= 0;
}
serial_delay();
}
/* send parity bit */
if(p & 1) { serial_high(); }
else { serial_low(); }
if (p & 1) {
serial_high();
} else {
serial_low();
}
serial_delay();
serial_low(); // sync_send() / senc_recv() need raise edge
serial_low(); // sync_send() / senc_recv() need raise edge
}
static void serial_send_packet(uint8_t *buffer, uint8_t size) NO_INLINE;
static
void serial_send_packet(uint8_t *buffer, uint8_t size) {
for (uint8_t i = 0; i < size; ++i) {
uint8_t data;
data = buffer[i];
sync_send();
serial_write_chunk(data,8);
}
static void serial_send_packet(uint8_t *buffer, uint8_t size) {
for (uint8_t i = 0; i < size; ++i) {
uint8_t data;
data = buffer[i];
sync_send();
serial_write_chunk(data, 8);
}
}
static uint8_t serial_recive_packet(uint8_t *buffer, uint8_t size) NO_INLINE;
static
uint8_t serial_recive_packet(uint8_t *buffer, uint8_t size) {
uint8_t pecount = 0;
for (uint8_t i = 0; i < size; ++i) {
uint8_t data;
sync_recv();
data = serial_read_chunk(&pecount, 8);
buffer[i] = data;
}
return pecount == 0;
static uint8_t serial_recive_packet(uint8_t *buffer, uint8_t size) {
uint8_t pecount = 0;
for (uint8_t i = 0; i < size; ++i) {
uint8_t data;
sync_recv();
data = serial_read_chunk(&pecount, 8);
buffer[i] = data;
}
return pecount == 0;
}
inline static
void change_sender2reciver(void) {
sync_send(); //0
serial_delay_half1(); //1
serial_low(); //2
serial_input_with_pullup(); //2
serial_delay_half1(); //3
inline static void change_sender2reciver(void) {
sync_send(); // 0
serial_delay_half1(); // 1
serial_low(); // 2
serial_input_with_pullup(); // 2
serial_delay_half1(); // 3
}
inline static
void change_reciver2sender(void) {
sync_recv(); //0
serial_delay(); //1
serial_low(); //3
serial_output(); //3
serial_delay_half1(); //4
inline static void change_reciver2sender(void) {
sync_recv(); // 0
serial_delay(); // 1
serial_low(); // 3
serial_output(); // 3
serial_delay_half1(); // 4
}
static inline uint8_t nibble_bits_count(uint8_t bits)
{
static inline uint8_t nibble_bits_count(uint8_t bits) {
bits = (bits & 0x5) + (bits >> 1 & 0x5);
bits = (bits & 0x3) + (bits >> 2 & 0x3);
return bits;
@ -367,51 +341,47 @@ static inline uint8_t nibble_bits_count(uint8_t bits)
// interrupt handle to be used by the target device
ISR(SERIAL_PIN_INTERRUPT) {
# ifndef SERIAL_USE_MULTI_TRANSACTION
serial_low();
serial_output();
SSTD_t *trans = Transaction_table;
# else
// recive transaction table index
uint8_t tid, bits;
uint8_t pecount = 0;
sync_recv();
bits = serial_read_chunk(&pecount, 7);
tid = bits >> 3;
bits = (bits & 7) != nibble_bits_count(tid);
if (bits || pecount > 0 || tid > Transaction_table_size) {
return;
}
serial_delay_half1();
#ifndef SERIAL_USE_MULTI_TRANSACTION
serial_low();
serial_output();
SSTD_t *trans = Transaction_table;
#else
// recive transaction table index
uint8_t tid, bits;
uint8_t pecount = 0;
sync_recv();
bits = serial_read_chunk(&pecount,7);
tid = bits>>3;
bits = (bits&7) != nibble_bits_count(tid);
if( bits || pecount> 0 || tid > Transaction_table_size ) {
return;
}
serial_delay_half1();
serial_high(); // response step1 low->high
serial_output();
_delay_sub_us(SLAVE_INT_ACK_WIDTH_UNIT * SLAVE_INT_ACK_WIDTH);
SSTD_t *trans = &Transaction_table[tid];
serial_low(); // response step2 ack high->low
# endif
serial_high(); // response step1 low->high
serial_output();
_delay_sub_us(SLAVE_INT_ACK_WIDTH_UNIT*SLAVE_INT_ACK_WIDTH);
SSTD_t *trans = &Transaction_table[tid];
serial_low(); // response step2 ack high->low
#endif
// target send phase
if (trans->target2initiator_buffer_size > 0) serial_send_packet((uint8_t *)trans->target2initiator_buffer, trans->target2initiator_buffer_size);
// target switch to input
change_sender2reciver();
// target send phase
if( trans->target2initiator_buffer_size > 0 )
serial_send_packet((uint8_t *)trans->target2initiator_buffer,
trans->target2initiator_buffer_size);
// target switch to input
change_sender2reciver();
// target recive phase
if (trans->initiator2target_buffer_size > 0) {
if (serial_recive_packet((uint8_t *)trans->initiator2target_buffer, trans->initiator2target_buffer_size)) {
*trans->status = TRANSACTION_ACCEPTED;
} else {
*trans->status = TRANSACTION_DATA_ERROR;
}
} else {
*trans->status = TRANSACTION_ACCEPTED;
}
// target recive phase
if( trans->initiator2target_buffer_size > 0 ) {
if (serial_recive_packet((uint8_t *)trans->initiator2target_buffer,
trans->initiator2target_buffer_size) ) {
*trans->status = TRANSACTION_ACCEPTED;
} else {
*trans->status = TRANSACTION_DATA_ERROR;
}
} else {
*trans->status = TRANSACTION_ACCEPTED;
}
sync_recv(); //weit initiator output to high
sync_recv(); // weit initiator output to high
}
/////////
@ -424,105 +394,103 @@ ISR(SERIAL_PIN_INTERRUPT) {
// TRANSACTION_NO_RESPONSE
// TRANSACTION_DATA_ERROR
// this code is very time dependent, so we need to disable interrupts
#ifndef SERIAL_USE_MULTI_TRANSACTION
int soft_serial_transaction(void) {
SSTD_t *trans = Transaction_table;
#else
int soft_serial_transaction(int sstd_index) {
if( sstd_index > Transaction_table_size )
return TRANSACTION_TYPE_ERROR;
SSTD_t *trans = &Transaction_table[sstd_index];
#endif
cli();
# ifndef SERIAL_USE_MULTI_TRANSACTION
int soft_serial_transaction(void) {
SSTD_t *trans = Transaction_table;
# else
int soft_serial_transaction(int sstd_index) {
if (sstd_index > Transaction_table_size) return TRANSACTION_TYPE_ERROR;
SSTD_t *trans = &Transaction_table[sstd_index];
# endif
cli();
// signal to the target that we want to start a transaction
serial_output();
serial_low();
_delay_us(SLAVE_INT_WIDTH_US);
#ifndef SERIAL_USE_MULTI_TRANSACTION
// wait for the target response
serial_input_with_pullup();
_delay_us(SLAVE_INT_RESPONSE_TIME);
// check if the target is present
if (serial_read_pin()) {
// target failed to pull the line low, assume not present
// signal to the target that we want to start a transaction
serial_output();
serial_high();
*trans->status = TRANSACTION_NO_RESPONSE;
serial_low();
_delay_us(SLAVE_INT_WIDTH_US);
# ifndef SERIAL_USE_MULTI_TRANSACTION
// wait for the target response
serial_input_with_pullup();
_delay_us(SLAVE_INT_RESPONSE_TIME);
// check if the target is present
if (serial_read_pin()) {
// target failed to pull the line low, assume not present
serial_output();
serial_high();
*trans->status = TRANSACTION_NO_RESPONSE;
sei();
return TRANSACTION_NO_RESPONSE;
}
# else
// send transaction table index
int tid = (sstd_index << 3) | (7 & nibble_bits_count(sstd_index));
sync_send();
_delay_sub_us(TID_SEND_ADJUST);
serial_write_chunk(tid, 7);
serial_delay_half1();
// wait for the target response (step1 low->high)
serial_input_with_pullup();
while (!serial_read_pin()) {
_delay_sub_us(2);
}
// check if the target is present (step2 high->low)
for (int i = 0; serial_read_pin(); i++) {
if (i > SLAVE_INT_ACK_WIDTH + 1) {
// slave failed to pull the line low, assume not present
serial_output();
serial_high();
*trans->status = TRANSACTION_NO_RESPONSE;
sei();
return TRANSACTION_NO_RESPONSE;
}
_delay_sub_us(SLAVE_INT_ACK_WIDTH_UNIT);
}
# endif
// initiator recive phase
// if the target is present syncronize with it
if (trans->target2initiator_buffer_size > 0) {
if (!serial_recive_packet((uint8_t *)trans->target2initiator_buffer, trans->target2initiator_buffer_size)) {
serial_output();
serial_high();
*trans->status = TRANSACTION_DATA_ERROR;
sei();
return TRANSACTION_DATA_ERROR;
}
}
// initiator switch to output
change_reciver2sender();
// initiator send phase
if (trans->initiator2target_buffer_size > 0) {
serial_send_packet((uint8_t *)trans->initiator2target_buffer, trans->initiator2target_buffer_size);
}
// always, release the line when not in use
sync_send();
*trans->status = TRANSACTION_END;
sei();
return TRANSACTION_NO_RESPONSE;
}
#else
// send transaction table index
int tid = (sstd_index<<3) | (7 & nibble_bits_count(sstd_index));
sync_send();
_delay_sub_us(TID_SEND_ADJUST);
serial_write_chunk(tid, 7);
serial_delay_half1();
// wait for the target response (step1 low->high)
serial_input_with_pullup();
while( !serial_read_pin() ) {
_delay_sub_us(2);
}
// check if the target is present (step2 high->low)
for( int i = 0; serial_read_pin(); i++ ) {
if (i > SLAVE_INT_ACK_WIDTH + 1) {
// slave failed to pull the line low, assume not present
serial_output();
serial_high();
*trans->status = TRANSACTION_NO_RESPONSE;
sei();
return TRANSACTION_NO_RESPONSE;
}
_delay_sub_us(SLAVE_INT_ACK_WIDTH_UNIT);
}
#endif
// initiator recive phase
// if the target is present syncronize with it
if( trans->target2initiator_buffer_size > 0 ) {
if (!serial_recive_packet((uint8_t *)trans->target2initiator_buffer,
trans->target2initiator_buffer_size) ) {
serial_output();
serial_high();
*trans->status = TRANSACTION_DATA_ERROR;
sei();
return TRANSACTION_DATA_ERROR;
}
}
// initiator switch to output
change_reciver2sender();
// initiator send phase
if( trans->initiator2target_buffer_size > 0 ) {
serial_send_packet((uint8_t *)trans->initiator2target_buffer,
trans->initiator2target_buffer_size);
}
// always, release the line when not in use
sync_send();
*trans->status = TRANSACTION_END;
sei();
return TRANSACTION_END;
return TRANSACTION_END;
}
#ifdef SERIAL_USE_MULTI_TRANSACTION
# ifdef SERIAL_USE_MULTI_TRANSACTION
int soft_serial_get_and_clean_status(int sstd_index) {
SSTD_t *trans = &Transaction_table[sstd_index];
cli();
int retval = *trans->status;
*trans->status = 0;;
int retval = *trans->status;
*trans->status = 0;
;
sei();
return retval;
}
#endif
# endif
#endif