From a65085a89354e89ddd3517aa63c74ef6dd32ca8b Mon Sep 17 00:00:00 2001 From: Pekaso Date: Fri, 28 Sep 2018 10:06:19 +0900 Subject: Keyboard: [Fortitude60] LED fix and Serial improvement (#3982) * arrangement Underglow * modified serial function references from helix * Remove defines (ws2812_*REG) --- keyboards/fortitude60/serial.c | 451 ++++++++++++++++++++++++++++++----------- 1 file changed, 330 insertions(+), 121 deletions(-) (limited to 'keyboards/fortitude60/serial.c') diff --git a/keyboards/fortitude60/serial.c b/keyboards/fortitude60/serial.c index 46dfad021d..cea1a5f6ca 100644 --- a/keyboards/fortitude60/serial.c +++ b/keyboards/fortitude60/serial.c @@ -9,34 +9,128 @@ #include #include #include +#include #include #include "serial.h" +//#include + +#ifdef USE_SERIAL + +#ifndef SERIAL_USE_MULTI_TRANSACTION +/* --- USE Simple API (OLD API, compatible with let's split serial.c) */ + #if SERIAL_SLAVE_BUFFER_LENGTH > 0 + uint8_t volatile serial_slave_buffer[SERIAL_SLAVE_BUFFER_LENGTH] = {0}; + #endif + #if SERIAL_MASTER_BUFFER_LENGTH > 0 + uint8_t volatile serial_master_buffer[SERIAL_MASTER_BUFFER_LENGTH] = {0}; + #endif + uint8_t volatile status0 = 0; + +SSTD_t transactions[] = { + { (uint8_t *)&status0, + #if SERIAL_MASTER_BUFFER_LENGTH > 0 + sizeof(serial_master_buffer), (uint8_t *)serial_master_buffer, + #else + 0, (uint8_t *)NULL, + #endif + #if SERIAL_SLAVE_BUFFER_LENGTH > 0 + sizeof(serial_slave_buffer), (uint8_t *)serial_slave_buffer + #else + 0, (uint8_t *)NULL, + #endif + } +}; + +void serial_master_init(void) +{ soft_serial_initiator_init(transactions); } -#ifndef USE_I2C +void serial_slave_init(void) +{ soft_serial_target_init(transactions); } -// Serial pulse period in microseconds. Its probably a bad idea to lower this -// value. -#define SERIAL_DELAY 24 +// 0 => no error +// 1 => slave did not respond +// 2 => checksum error +int serial_update_buffers() +{ return soft_serial_transaction(); } + +#endif // Simple API (OLD API, compatible with let's split serial.c) + +#define ALWAYS_INLINE __attribute__((always_inline)) +#define NO_INLINE __attribute__((noinline)) +#define _delay_sub_us(x) __builtin_avr_delay_cycles(x) + +// Serial pulse period in microseconds. +#define TID_SEND_ADJUST 14 + +#define SELECT_SERIAL_SPEED 1 +#if SELECT_SERIAL_SPEED == 0 + // Very High speed + #define SERIAL_DELAY 4 // micro sec + #define READ_WRITE_START_ADJUST 33 // cycles + #define READ_WRITE_WIDTH_ADJUST 3 // cycles +#elif SELECT_SERIAL_SPEED == 1 + // High speed + #define SERIAL_DELAY 6 // micro sec + #define READ_WRITE_START_ADJUST 30 // cycles + #define READ_WRITE_WIDTH_ADJUST 3 // cycles +#elif SELECT_SERIAL_SPEED == 2 + // Middle speed + #define SERIAL_DELAY 12 // micro sec + #define READ_WRITE_START_ADJUST 30 // cycles + #define READ_WRITE_WIDTH_ADJUST 3 // cycles +#elif SELECT_SERIAL_SPEED == 3 + // Low speed + #define SERIAL_DELAY 24 // micro sec + #define READ_WRITE_START_ADJUST 30 // cycles + #define READ_WRITE_WIDTH_ADJUST 3 // cycles +#elif SELECT_SERIAL_SPEED == 4 + // Very Low speed + #define SERIAL_DELAY 50 // micro sec + #define READ_WRITE_START_ADJUST 30 // cycles + #define READ_WRITE_WIDTH_ADJUST 3 // cycles +#else +#error Illegal Serial Speed +#endif -uint8_t volatile serial_slave_buffer[SERIAL_SLAVE_BUFFER_LENGTH] = {0}; -uint8_t volatile serial_master_buffer[SERIAL_MASTER_BUFFER_LENGTH] = {0}; -#define SLAVE_DATA_CORRUPT (1<<0) -volatile uint8_t status = 0; +#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 + +static SSTD_t *Transaction_table = NULL; inline static void serial_delay(void) { _delay_us(SERIAL_DELAY); } +inline static +void serial_delay_half1(void) { + _delay_us(SERIAL_DELAY_HALF1); +} + +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) { SERIAL_PIN_DDR |= SERIAL_PIN_MASK; } // 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(void) { +void serial_input_with_pullup(void) { SERIAL_PIN_DDR &= ~SERIAL_PIN_MASK; SERIAL_PIN_PORT |= SERIAL_PIN_MASK; } @@ -46,190 +140,305 @@ uint8_t serial_read_pin(void) { return !!(SERIAL_PIN_INPUT & SERIAL_PIN_MASK); } +inline static void serial_low(void) ALWAYS_INLINE; inline static void serial_low(void) { SERIAL_PIN_PORT &= ~SERIAL_PIN_MASK; } +inline static void serial_high(void) ALWAYS_INLINE; inline static void serial_high(void) { SERIAL_PIN_PORT |= SERIAL_PIN_MASK; } -void serial_master_init(void) { - serial_output(); - serial_high(); +void soft_serial_initiator_init(SSTD_t *sstd_table) +{ + Transaction_table = sstd_table; + serial_output(); + serial_high(); } -void serial_slave_init(void) { - serial_input(); - -#ifndef USE_SERIAL_PD2 - // Enable INT0 - EIMSK |= _BV(INT0); - // Trigger on falling edge of INT0 - EICRA &= ~(_BV(ISC00) | _BV(ISC01)); +void soft_serial_target_init(SSTD_t *sstd_table) +{ + Transaction_table = sstd_table; + serial_input_with_pullup(); + +#if SERIAL_PIN_MASK == _BV(PD0) + // Enable INT0 + EIMSK |= _BV(INT0); + // Trigger on falling edge of INT0 + EICRA &= ~(_BV(ISC00) | _BV(ISC01)); +#elif SERIAL_PIN_MASK == _BV(PD2) + // Enable INT2 + EIMSK |= _BV(INT2); + // Trigger on falling edge of INT2 + EICRA &= ~(_BV(ISC20) | _BV(ISC21)); #else - // Enable INT2 - EIMSK |= _BV(INT2); - // Trigger on falling edge of INT2 - EICRA &= ~(_BV(ISC20) | _BV(ISC21)); + #error unknown SERIAL_PIN_MASK value #endif } -// Used by the master to synchronize timing with the slave. +// Used by the sender to synchronize timing with the reciver. +static void sync_recv(void) NO_INLINE; static void sync_recv(void) { - serial_input(); - // This shouldn't hang if the slave disconnects because the - // serial line will float to high if the slave does disconnect. + 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()); - serial_delay(); } -// Used by the slave to send a synchronization signal to the master. +// 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_output(); - serial_low(); serial_delay(); - serial_high(); } // Reads a byte from the serial line -static -uint8_t serial_read_byte(void) { - uint8_t byte = 0; - serial_input(); - for ( uint8_t i = 0; i < 8; ++i) { - byte = (byte << 1) | serial_read_pin(); - serial_delay(); - _delay_us(1); +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 = 0; 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; return byte; } // Sends a byte with MSB ordering -static -void serial_write_byte(uint8_t data) { - uint8_t b = 8; - serial_output(); - while( b-- ) { - if(data & (1 << b)) { - serial_high(); - } else { - serial_low(); +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 = 0, b = 1<<(bit-1); b ; b >>= 1) { + if(data & b) { + serial_high(); p ^= 1; + } else { + serial_low(); p ^= 0; + } + serial_delay(); } + /* send parity bit */ + if(p & 1) { serial_high(); } + else { serial_low(); } serial_delay(); - } -} -// interrupt handle to be used by the slave device -ISR(SERIAL_PIN_INTERRUPT) { - sync_send(); + serial_low(); // sync_send() / senc_recv() need raise edge +} - uint8_t checksum = 0; - for (int i = 0; i < SERIAL_SLAVE_BUFFER_LENGTH; ++i) { - serial_write_byte(serial_slave_buffer[i]); +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(); - checksum += serial_slave_buffer[i]; + serial_write_chunk(data,8); } - serial_write_byte(checksum); - sync_send(); +} - // wait for the sync to finish sending - serial_delay(); +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; +} - // read the middle of pulses - _delay_us(SERIAL_DELAY/2); +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 +} - uint8_t checksum_computed = 0; - for (int i = 0; i < SERIAL_MASTER_BUFFER_LENGTH; ++i) { - serial_master_buffer[i] = serial_read_byte(); - sync_send(); - checksum_computed += serial_master_buffer[i]; - } - uint8_t checksum_received = serial_read_byte(); - sync_send(); +inline static +void change_reciver2sender(void) { + sync_recv(); //0 + serial_delay(); //1 + serial_low(); //3 + serial_output(); //3 + serial_delay_half1(); //4 +} - serial_input(); // end transaction +// interrupt handle to be used by the target device +ISR(SERIAL_PIN_INTERRUPT) { - if ( checksum_computed != checksum_received ) { - status |= SLAVE_DATA_CORRUPT; +#ifndef SERIAL_USE_MULTI_TRANSACTION + serial_low(); + serial_output(); + SSTD_t *trans = Transaction_table; +#else + // recive transaction table index + uint8_t tid; + uint8_t pecount = 0; + sync_recv(); + tid = serial_read_chunk(&pecount,4); + if(pecount> 0) + 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 + + // 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 { - status &= ~SLAVE_DATA_CORRUPT; + *trans->status = TRANSACTION_ACCEPTED; } -} -inline -bool serial_slave_DATA_CORRUPT(void) { - return status & SLAVE_DATA_CORRUPT; + sync_recv(); //weit initiator output to high } -// Copies the serial_slave_buffer to the master and sends the -// serial_master_buffer to the slave. +///////// +// start transaction by initiator +// +// int soft_serial_transaction(int sstd_index) // // Returns: -// 0 => no error -// 1 => slave did not respond -int serial_update_buffers(void) { - // this code is very time dependent, so we need to disable interrupts +// TRANSACTION_END +// 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) { + SSTD_t *trans = &Transaction_table[sstd_index]; +#endif cli(); - // signal to the slave that we want to start a transaction + // signal to the target that we want to start a transaction serial_output(); serial_low(); - _delay_us(1); + _delay_us(SLAVE_INT_WIDTH_US); - // wait for the slaves response - serial_input(); - serial_high(); - _delay_us(SERIAL_DELAY); +#ifndef SERIAL_USE_MULTI_TRANSACTION + // wait for the target response + serial_input_with_pullup(); + _delay_us(SLAVE_INT_RESPONSE_TIME); - // check if the slave is present + // check if the target is present if (serial_read_pin()) { - // slave failed to pull the line low, assume not present + // target failed to pull the line low, assume not present + serial_output(); + serial_high(); + *trans->status = TRANSACTION_NO_RESPONSE; sei(); - return 1; + return TRANSACTION_NO_RESPONSE; } - // if the slave is present syncronize with it - sync_recv(); - - uint8_t checksum_computed = 0; - // receive data from the slave - for (int i = 0; i < SERIAL_SLAVE_BUFFER_LENGTH; ++i) { - serial_slave_buffer[i] = serial_read_byte(); - sync_recv(); - checksum_computed += serial_slave_buffer[i]; +#else + // send transaction table index + sync_send(); + _delay_sub_us(TID_SEND_ADJUST); + serial_write_chunk(sstd_index, 4); + serial_delay_half1(); + + // wait for the target response (step1 low->high) + serial_input_with_pullup(); + while( !serial_read_pin() ) { + _delay_sub_us(2); } - uint8_t checksum_received = serial_read_byte(); - sync_recv(); - if (checksum_computed != checksum_received) { - sei(); - return 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 - uint8_t checksum = 0; - // send data to the slave - for (int i = 0; i < SERIAL_MASTER_BUFFER_LENGTH; ++i) { - serial_write_byte(serial_master_buffer[i]); - sync_recv(); - checksum += serial_master_buffer[i]; + // 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); } - serial_write_byte(checksum); - sync_recv(); // always, release the line when not in use - serial_output(); - serial_high(); + sync_send(); + *trans->status = TRANSACTION_END; sei(); - return 0; + return TRANSACTION_END; } +#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;; + sei(); + return retval; +} #endif + +#endif \ No newline at end of file -- cgit v1.2.3 From daf08f40f2aeb815322d65d14a90ae56ea22953c Mon Sep 17 00:00:00 2001 From: Pekaso Date: Thu, 15 Nov 2018 11:36:53 +0900 Subject: serial.c update (#4423) --- keyboards/fortitude60/serial.c | 290 +++++++++++++++++++++++++++++++---------- 1 file changed, 218 insertions(+), 72 deletions(-) (limited to 'keyboards/fortitude60/serial.c') diff --git a/keyboards/fortitude60/serial.c b/keyboards/fortitude60/serial.c index cea1a5f6ca..6006ebf1bd 100644 --- a/keyboards/fortitude60/serial.c +++ b/keyboards/fortitude60/serial.c @@ -1,5 +1,10 @@ /* * WARNING: be careful changing this code, it is very timing dependent + * + * 2018-10-28 checked + * avr-gcc 4.9.2 + * avr-gcc 5.4.0 + * avr-gcc 7.3.0 */ #ifndef F_CPU @@ -14,10 +19,60 @@ #include "serial.h" //#include -#ifdef USE_SERIAL +#ifdef SOFT_SERIAL_PIN -#ifndef SERIAL_USE_MULTI_TRANSACTION -/* --- USE Simple API (OLD API, compatible with let's split serial.c) */ +#ifdef __AVR_ATmega32U4__ + // if using ATmega32U4 I2C, can not use PD0 and PD1 in soft serial. + #ifdef USE_I2C + #if SOFT_SERIAL_PIN == D0 || SOFT_SERIAL_PIN == D1 + #error Using ATmega32U4 I2C, so can not use PD0, PD1 + #endif + #endif + + #if SOFT_SERIAL_PIN >= D0 && SOFT_SERIAL_PIN <= D3 + #define SERIAL_PIN_DDR DDRD + #define SERIAL_PIN_PORT PORTD + #define SERIAL_PIN_INPUT PIND + #if SOFT_SERIAL_PIN == D0 + #define SERIAL_PIN_MASK _BV(PD0) + #define EIMSK_BIT _BV(INT0) + #define EICRx_BIT (~(_BV(ISC00) | _BV(ISC01))) + #define SERIAL_PIN_INTERRUPT INT0_vect + #elif SOFT_SERIAL_PIN == D1 + #define SERIAL_PIN_MASK _BV(PD1) + #define EIMSK_BIT _BV(INT1) + #define EICRx_BIT (~(_BV(ISC10) | _BV(ISC11))) + #define SERIAL_PIN_INTERRUPT INT1_vect + #elif SOFT_SERIAL_PIN == D2 + #define SERIAL_PIN_MASK _BV(PD2) + #define EIMSK_BIT _BV(INT2) + #define EICRx_BIT (~(_BV(ISC20) | _BV(ISC21))) + #define SERIAL_PIN_INTERRUPT INT2_vect + #elif SOFT_SERIAL_PIN == D3 + #define SERIAL_PIN_MASK _BV(PD3) + #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 SERIAL_PIN_DDR DDRE + #define SERIAL_PIN_PORT PORTE + #define SERIAL_PIN_INPUT PINE + #define SERIAL_PIN_MASK _BV(PE6) + #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 + +//////////////// for backward compatibility //////////////////////////////// +#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 uint8_t volatile serial_slave_buffer[SERIAL_SLAVE_BUFFER_LENGTH] = {0}; #endif @@ -42,56 +97,118 @@ SSTD_t transactions[] = { }; void serial_master_init(void) -{ soft_serial_initiator_init(transactions); } +{ soft_serial_initiator_init(transactions, TID_LIMIT(transactions)); } void serial_slave_init(void) -{ soft_serial_target_init(transactions); } +{ soft_serial_target_init(transactions, TID_LIMIT(transactions)); } // 0 => no error // 1 => slave did not respond // 2 => checksum error int serial_update_buffers() -{ return soft_serial_transaction(); } +{ + int result; + result = soft_serial_transaction(); + return result; +} -#endif // Simple API (OLD API, compatible with let's split serial.c) +#endif // end of OLD API (compatible with let's split serial.c) +//////////////////////////////////////////////////////////////////////////// #define ALWAYS_INLINE __attribute__((always_inline)) #define NO_INLINE __attribute__((noinline)) #define _delay_sub_us(x) __builtin_avr_delay_cycles(x) -// Serial pulse period in microseconds. -#define TID_SEND_ADJUST 14 +// parity check +#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 +// ============ Standard setups ============ + +#ifndef SELECT_SOFT_SERIAL_SPEED +#define SELECT_SOFT_SERIAL_SPEED 1 +// 0: about 189kbps +// 1: about 137kbps (default) +// 2: about 75kbps +// 3: about 39kbps +// 4: about 26kbps +// 5: about 20kbps +#endif -#define SELECT_SERIAL_SPEED 1 -#if SELECT_SERIAL_SPEED == 0 +#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 - #define READ_WRITE_START_ADJUST 33 // cycles - #define READ_WRITE_WIDTH_ADJUST 3 // cycles -#elif SELECT_SERIAL_SPEED == 1 + #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 - #define READ_WRITE_START_ADJUST 30 // cycles - #define READ_WRITE_WIDTH_ADJUST 3 // cycles -#elif SELECT_SERIAL_SPEED == 2 + #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 - #define READ_WRITE_WIDTH_ADJUST 3 // cycles -#elif SELECT_SERIAL_SPEED == 3 + #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 - #define READ_WRITE_WIDTH_ADJUST 3 // cycles -#elif SELECT_SERIAL_SPEED == 4 + #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 50 // micro sec + #define SERIAL_DELAY 36 // micro sec #define READ_WRITE_START_ADJUST 30 // cycles - #define READ_WRITE_WIDTH_ADJUST 3 // 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 Illegal Serial Speed -#endif - +#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) @@ -105,17 +222,21 @@ int serial_update_buffers() #endif 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_half1(void) ALWAYS_INLINE; 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); @@ -135,6 +256,7 @@ void serial_input_with_pullup(void) { SERIAL_PIN_PORT |= SERIAL_PIN_MASK; } +inline static uint8_t serial_read_pin(void) ALWAYS_INLINE; inline static uint8_t serial_read_pin(void) { return !!(SERIAL_PIN_INPUT & SERIAL_PIN_MASK); @@ -152,30 +274,28 @@ void serial_high(void) { SERIAL_PIN_PORT |= SERIAL_PIN_MASK; } -void soft_serial_initiator_init(SSTD_t *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) +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(); -#if SERIAL_PIN_MASK == _BV(PD0) - // Enable INT0 - EIMSK |= _BV(INT0); - // Trigger on falling edge of INT0 - EICRA &= ~(_BV(ISC00) | _BV(ISC01)); -#elif SERIAL_PIN_MASK == _BV(PD2) - // Enable INT2 - EIMSK |= _BV(INT2); - // Trigger on falling edge of INT2 - EICRA &= ~(_BV(ISC20) | _BV(ISC21)); + // Enable INT0-INT3,INT6 + EIMSK |= EIMSK_BIT; +#if SERIAL_PIN_MASK == _BV(PE6) + // Trigger on falling edge of INT6 + EICRB &= EICRx_BIT; #else - #error unknown SERIAL_PIN_MASK value + // Trigger on falling edge of INT0-INT3 + EICRA &= EICRx_BIT; #endif } @@ -191,7 +311,7 @@ void sync_recv(void) { } // Used by the reciver to send a synchronization signal to the sender. -static void sync_send(void)NO_INLINE; +static void sync_send(void) NO_INLINE; static void sync_send(void) { serial_low(); @@ -205,12 +325,12 @@ 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 = 0; i < bit; i++ ) { + 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; + byte = (byte << 1) | 1; p ^= 1; } else { - byte = (byte << 1) | 0; p ^= 0; + byte = (byte << 1) | 0; p ^= 0; } _delay_sub_us(READ_WRITE_WIDTH_ADJUST); serial_delay_half2(); @@ -230,13 +350,13 @@ static uint8_t serial_read_chunk(uint8_t *pterrcount, uint8_t bit) { 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 = 0, b = 1<<(bit-1); b ; b >>= 1) { - if(data & b) { - serial_high(); p ^= 1; - } else { - serial_low(); p ^= 0; - } - serial_delay(); + for( p = PARITY, b = 1<<(bit-1); b ; b >>= 1) { + if(data & b) { + serial_high(); p ^= 1; + } else { + serial_low(); p ^= 0; + } + serial_delay(); } /* send parity bit */ if(p & 1) { serial_high(); } @@ -288,6 +408,13 @@ void change_reciver2sender(void) { serial_delay_half1(); //4 } +static inline uint8_t nibble_bits_count(uint8_t bits) +{ + bits = (bits & 0x5) + (bits >> 1 & 0x5); + bits = (bits & 0x3) + (bits >> 2 & 0x3); + return bits; +} + // interrupt handle to be used by the target device ISR(SERIAL_PIN_INTERRUPT) { @@ -297,12 +424,15 @@ ISR(SERIAL_PIN_INTERRUPT) { SSTD_t *trans = Transaction_table; #else // recive transaction table index - uint8_t tid; + uint8_t tid, bits; uint8_t pecount = 0; sync_recv(); - tid = serial_read_chunk(&pecount,4); - if(pecount> 0) + 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 @@ -315,17 +445,17 @@ ISR(SERIAL_PIN_INTERRUPT) { // target send phase if( trans->target2initiator_buffer_size > 0 ) serial_send_packet((uint8_t *)trans->target2initiator_buffer, - trans->target2initiator_buffer_size); + 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; + trans->initiator2target_buffer_size) ) { + *trans->status = TRANSACTION_ACCEPTED; } else { - *trans->status = TRANSACTION_DATA_ERROR; + *trans->status = TRANSACTION_DATA_ERROR; } } else { *trans->status = TRANSACTION_ACCEPTED; @@ -349,6 +479,8 @@ 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(); @@ -375,9 +507,10 @@ int soft_serial_transaction(int sstd_index) { #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(sstd_index, 4); + serial_write_chunk(tid, 7); serial_delay_half1(); // wait for the target response (step1 low->high) @@ -389,12 +522,12 @@ int soft_serial_transaction(int sstd_index) { // 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; + // 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); } @@ -404,12 +537,12 @@ int soft_serial_transaction(int sstd_index) { // 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; + trans->target2initiator_buffer_size) ) { + serial_output(); + serial_high(); + *trans->status = TRANSACTION_DATA_ERROR; + sei(); + return TRANSACTION_DATA_ERROR; } } @@ -419,7 +552,7 @@ int soft_serial_transaction(int sstd_index) { // initiator send phase if( trans->initiator2target_buffer_size > 0 ) { serial_send_packet((uint8_t *)trans->initiator2target_buffer, - trans->initiator2target_buffer_size); + trans->initiator2target_buffer_size); } // always, release the line when not in use @@ -441,4 +574,17 @@ int soft_serial_get_and_clean_status(int sstd_index) { } #endif -#endif \ No newline at end of file +#endif + +// Helix serial.c history +// 2018-1-29 fork from let's split and add PD2, modify sync_recv() (#2308, bceffdefc) +// 2018-6-28 bug fix master to slave comm and speed up (#3255, 1038bbef4) +// (adjusted with avr-gcc 4.9.2) +// 2018-7-13 remove USE_SERIAL_PD2 macro (#3374, f30d6dd78) +// (adjusted with avr-gcc 4.9.2) +// 2018-8-11 add support multi-type transaction (#3608, feb5e4aae) +// (adjusted with avr-gcc 4.9.2) +// 2018-10-21 fix serial and RGB animation conflict (#4191, 4665e4fff) +// (adjusted with avr-gcc 7.3.0) +// 2018-10-28 re-adjust compiler depend value of delay (#4269, 8517f8a66) +// (adjusted with avr-gcc 5.4.0, 7.3.0) -- cgit v1.2.3