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-rw-r--r--keyboards/helix/local_drivers/serial.c589
1 files changed, 0 insertions, 589 deletions
diff --git a/keyboards/helix/local_drivers/serial.c b/keyboards/helix/local_drivers/serial.c
deleted file mode 100644
index 674c42d593..0000000000
--- a/keyboards/helix/local_drivers/serial.c
+++ /dev/null
@@ -1,589 +0,0 @@
-/*
- * 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
-#define F_CPU 16000000
-#endif
-
-#include <avr/io.h>
-#include <avr/interrupt.h>
-#include <util/delay.h>
-#include <stddef.h>
-#include <stdbool.h>
-#include "serial.h"
-
-#ifdef SOFT_SERIAL_PIN
-
-#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
- #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, TID_LIMIT(transactions)); }
-
-void serial_slave_init(void)
-{ soft_serial_target_init(transactions, TID_LIMIT(transactions)); }
-
-// 0 => no error
-// 1 => slave did not respond
-// 2 => checksum error
-int serial_update_buffers()
-{
- int result;
- result = soft_serial_transaction();
- return result;
-}
-
-#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)
-
-// 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
-
-#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 */
-
-#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;
-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);
-}
-
-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_with_pullup(void) {
- SERIAL_PIN_DDR &= ~SERIAL_PIN_MASK;
- 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);
-}
-
-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 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;
- Transaction_table_size = (uint8_t)sstd_table_size;
- serial_input_with_pullup();
-
- // Enable INT0-INT3,INT6
- EIMSK |= EIMSK_BIT;
-#if SERIAL_PIN_MASK == _BV(PE6)
- // Trigger on falling edge of INT6
- EICRB &= EICRx_BIT;
-#else
- // Trigger on falling edge of INT0-INT3
- EICRA &= EICRx_BIT;
-#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());
-}
-
-// 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();
-}
-
-// Reads a byte from the serial line
-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();
-
- *pterrcount += (p != pb)? 1 : 0;
-
- 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;
- } else {
- serial_low(); p ^= 0;
- }
- serial_delay();
- }
- /* send parity bit */
- if(p & 1) { serial_high(); }
- else { serial_low(); }
- serial_delay();
-
- 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 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;
-}
-
-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
-}
-
-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) {
-
-#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
-
- // 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;
- }
-
- sync_recv(); //weit initiator output to high
-}
-
-/////////
-// start transaction by initiator
-//
-// int soft_serial_transaction(int sstd_index)
-//
-// Returns:
-// 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) {
- 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
- 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_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
-
-// 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)
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