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Remove leftover old implementations of the lily58 split code. (#12442)

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Nick Brassel 2021-04-01 00:09:01 +11:00 committed by GitHub
parent 8a950a7116
commit c5ddada32e
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5 changed files with 2 additions and 1050 deletions
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2
keyboards/lily58/rev1/config.h
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@ -35,6 +35,8 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#define MATRIX_ROW_PINS { C6, D7, E6, B4, B5 }
#define MATRIX_COL_PINS { F6, F7, B1, B3, B2, B6 }
#define SOFT_SERIAL_PIN D2
#define SERIAL_USE_MULTI_TRANSACTION
/* define if matrix has ghost */
//#define MATRIX_HAS_GHOST

357
keyboards/lily58/rev1/matrix.c
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@ -1,357 +0,0 @@
/*
Copyright 2012 Jun Wako <wakojun@gmail.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* scan matrix
*/
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include <avr/io.h>
#include <avr/wdt.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include "print.h"
#include "debug.h"
#include "util.h"
#include "matrix.h"
#include "split_util.h"
#include "quantum.h"
#ifdef USE_MATRIX_I2C
# include "i2c.h"
#else // USE_SERIAL
# include "split_scomm.h"
#endif
#ifndef DEBOUNCE
# define DEBOUNCE 5
#endif
#define ERROR_DISCONNECT_COUNT 5
static uint8_t debouncing = DEBOUNCE;
static const int ROWS_PER_HAND = MATRIX_ROWS/2;
static uint8_t error_count = 0;
uint8_t is_master = 0 ;
static const uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
static const uint8_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
/* matrix state(1:on, 0:off) */
static matrix_row_t matrix[MATRIX_ROWS];
static matrix_row_t matrix_debouncing[MATRIX_ROWS];
static matrix_row_t read_cols(void);
static void init_cols(void);
static void unselect_rows(void);
static void select_row(uint8_t row);
static uint8_t matrix_master_scan(void);
__attribute__ ((weak))
void matrix_init_kb(void) {
matrix_init_user();
}
__attribute__ ((weak))
void matrix_scan_kb(void) {
matrix_scan_user();
}
__attribute__ ((weak))
void matrix_init_user(void) {
}
__attribute__ ((weak))
void matrix_scan_user(void) {
}
inline
uint8_t matrix_rows(void)
{
return MATRIX_ROWS;
}
inline
uint8_t matrix_cols(void)
{
return MATRIX_COLS;
}
void matrix_init(void)
{
split_keyboard_setup();
// initialize row and col
unselect_rows();
init_cols();
setPinOutput(B0);
setPinOutput(D5);
writePinHigh(B0);
writePinHigh(D5);
// initialize matrix state: all keys off
for (uint8_t i=0; i < MATRIX_ROWS; i++) {
matrix[i] = 0;
matrix_debouncing[i] = 0;
}
is_master = has_usb();
matrix_init_quantum();
}
uint8_t _matrix_scan(void)
{
// Right hand is stored after the left in the matirx so, we need to offset it
int offset = isLeftHand ? 0 : (ROWS_PER_HAND);
for (uint8_t i = 0; i < ROWS_PER_HAND; i++) {
select_row(i);
_delay_us(30); // without this wait read unstable value.
matrix_row_t cols = read_cols();
if (matrix_debouncing[i+offset] != cols) {
matrix_debouncing[i+offset] = cols;
debouncing = DEBOUNCE;
}
unselect_rows();
}
if (debouncing) {
if (--debouncing) {
_delay_ms(1);
} else {
for (uint8_t i = 0; i < ROWS_PER_HAND; i++) {
matrix[i+offset] = matrix_debouncing[i+offset];
}
}
}
return 1;
}
#ifdef USE_MATRIX_I2C
// Get rows from other half over i2c
int i2c_transaction(void) {
int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
int err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_WRITE);
if (err) goto i2c_error;
// start of matrix stored at 0x00
err = i2c_master_write(0x00);
if (err) goto i2c_error;
// Start read
err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_READ);
if (err) goto i2c_error;
if (!err) {
int i;
for (i = 0; i < ROWS_PER_HAND-1; ++i) {
matrix[slaveOffset+i] = i2c_master_read(I2C_ACK);
}
matrix[slaveOffset+i] = i2c_master_read(I2C_NACK);
i2c_master_stop();
} else {
i2c_error: // the cable is disconnceted, or something else went wrong
i2c_reset_state();
return err;
}
return 0;
}
#else // USE_SERIAL
int serial_transaction(int master_changed) {
int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
#ifdef SERIAL_USE_MULTI_TRANSACTION
int ret=serial_update_buffers(master_changed);
#else
int ret=serial_update_buffers();
#endif
if (ret ) {
if(ret==2) writePinLow(B0);
return 1;
}
writePinHigh(B0);
memcpy(&matrix[slaveOffset],
(void *)serial_slave_buffer, SERIAL_SLAVE_BUFFER_LENGTH);
return 0;
}
#endif
uint8_t matrix_scan(void)
{
if (is_master) {
matrix_master_scan();
}else{
matrix_slave_scan();
int offset = (isLeftHand) ? ROWS_PER_HAND : 0;
memcpy(&matrix[offset],
(void *)serial_master_buffer, SERIAL_MASTER_BUFFER_LENGTH);
matrix_scan_quantum();
}
return 1;
}
uint8_t matrix_master_scan(void) {
int ret = _matrix_scan();
int mchanged = 1;
int offset = (isLeftHand) ? 0 : ROWS_PER_HAND;
#ifdef USE_MATRIX_I2C
// for (int i = 0; i < ROWS_PER_HAND; ++i) {
/* i2c_slave_buffer[i] = matrix[offset+i]; */
// i2c_slave_buffer[i] = matrix[offset+i];
// }
#else // USE_SERIAL
#ifdef SERIAL_USE_MULTI_TRANSACTION
mchanged = memcmp((void *)serial_master_buffer,
&matrix[offset], SERIAL_MASTER_BUFFER_LENGTH);
#endif
memcpy((void *)serial_master_buffer,
&matrix[offset], SERIAL_MASTER_BUFFER_LENGTH);
#endif
#ifdef USE_MATRIX_I2C
if( i2c_transaction() ) {
#else // USE_SERIAL
if( serial_transaction(mchanged) ) {
#endif
// turn on the indicator led when halves are disconnected
writePinLow(D5);
error_count++;
if (error_count > ERROR_DISCONNECT_COUNT) {
// reset other half if disconnected
int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
for (int i = 0; i < ROWS_PER_HAND; ++i) {
matrix[slaveOffset+i] = 0;
}
}
} else {
// turn off the indicator led on no error
writePinHigh(D5);
error_count = 0;
}
matrix_scan_quantum();
return ret;
}
void matrix_slave_scan(void) {
_matrix_scan();
int offset = (isLeftHand) ? 0 : ROWS_PER_HAND;
#ifdef USE_MATRIX_I2C
for (int i = 0; i < ROWS_PER_HAND; ++i) {
/* i2c_slave_buffer[i] = matrix[offset+i]; */
i2c_slave_buffer[i] = matrix[offset+i];
}
#else // USE_SERIAL
#ifdef SERIAL_USE_MULTI_TRANSACTION
int change = 0;
#endif
for (int i = 0; i < ROWS_PER_HAND; ++i) {
#ifdef SERIAL_USE_MULTI_TRANSACTION
if( serial_slave_buffer[i] != matrix[offset+i] )
change = 1;
#endif
serial_slave_buffer[i] = matrix[offset+i];
}
#ifdef SERIAL_USE_MULTI_TRANSACTION
slave_buffer_change_count += change;
#endif
#endif
}
bool matrix_is_modified(void)
{
if (debouncing) return false;
return true;
}
inline
bool matrix_is_on(uint8_t row, uint8_t col)
{
return (matrix[row] & ((matrix_row_t)1<<col));
}
inline
matrix_row_t matrix_get_row(uint8_t row)
{
return matrix[row];
}
void matrix_print(void)
{
print("\nr/c 0123456789ABCDEF\n");
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
print_hex8(row); print(": ");
print_bin_reverse16(matrix_get_row(row));
print("\n");
}
}
uint8_t matrix_key_count(void)
{
uint8_t count = 0;
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
count += bitpop16(matrix[i]);
}
return count;
}
static void init_cols(void)
{
for(int x = 0; x < MATRIX_COLS; x++) {
_SFR_IO8((col_pins[x] >> 4) + 1) &= ~_BV(col_pins[x] & 0xF);
_SFR_IO8((col_pins[x] >> 4) + 2) |= _BV(col_pins[x] & 0xF);
}
}
static matrix_row_t read_cols(void)
{
matrix_row_t result = 0;
for(int x = 0; x < MATRIX_COLS; x++) {
result |= (_SFR_IO8(col_pins[x] >> 4) & _BV(col_pins[x] & 0xF)) ? 0 : (1 << x);
}
return result;
}
static void unselect_rows(void)
{
for(int x = 0; x < ROWS_PER_HAND; x++) {
_SFR_IO8((row_pins[x] >> 4) + 1) &= ~_BV(row_pins[x] & 0xF);
_SFR_IO8((row_pins[x] >> 4) + 2) |= _BV(row_pins[x] & 0xF);
}
}
static void select_row(uint8_t row)
{
_SFR_IO8((row_pins[row] >> 4) + 1) |= _BV(row_pins[row] & 0xF);
_SFR_IO8((row_pins[row] >> 4) + 2) &= ~_BV(row_pins[row] & 0xF);
}

4
keyboards/lily58/rev1/serial_config.h
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@ -1,4 +0,0 @@
#ifndef SOFT_SERIAL_PIN
#define SOFT_SERIAL_PIN D2
#define SERIAL_USE_MULTI_TRANSACTION
#endif

100
keyboards/lily58/rev1/split_util.c
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@ -1,100 +0,0 @@
#include <avr/io.h>
#include <avr/wdt.h>
#include <avr/power.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include <avr/eeprom.h>
#include "split_util.h"
#include "matrix.h"
#include "keyboard.h"
#include "wait.h"
#ifdef USE_MATRIX_I2C
# include "i2c.h"
#else
# include "split_scomm.h"
#endif
#ifndef SPLIT_USB_TIMEOUT
# define SPLIT_USB_TIMEOUT 2500
#endif
volatile bool isLeftHand = true;
bool waitForUsb(void) {
for (uint8_t i = 0; i < (SPLIT_USB_TIMEOUT / 100); i++) {
// This will return true of a USB connection has been established
if (UDADDR & _BV(ADDEN)) {
return true;
}
wait_ms(100);
}
// Avoid NO_USB_STARTUP_CHECK - Disable USB as the previous checks seem to enable it somehow
(USBCON &= ~(_BV(USBE) | _BV(OTGPADE)));
return false;
}
__attribute__((weak)) bool is_keyboard_left(void) {
#if defined(SPLIT_HAND_PIN)
// Test pin SPLIT_HAND_PIN for High/Low, if low it's right hand
setPinInput(SPLIT_HAND_PIN);
return readPin(SPLIT_HAND_PIN);
#elif defined(EE_HANDS)
return eeconfig_read_handedness();
#elif defined(MASTER_RIGHT)
return !has_usb();
#endif
return has_usb();
}
__attribute__((weak)) bool has_usb(void) {
static enum { UNKNOWN, MASTER, SLAVE } usbstate = UNKNOWN;
// only check once, as this is called often
if (usbstate == UNKNOWN) {
#if defined(SPLIT_USB_DETECT)
usbstate = waitForUsb() ? MASTER : SLAVE;
#elif defined(__AVR__)
USBCON |= (1 << OTGPADE); // enables VBUS pad
wait_us(5);
usbstate = (USBSTA & (1 << VBUS)) ? MASTER : SLAVE; // checks state of VBUS
#else
usbstate = MASTER;
#endif
}
return (usbstate == MASTER);
}
static void keyboard_master_setup(void) {
#ifdef USE_MATRIX_I2C
i2c_master_init();
#else
serial_master_init();
#endif
}
static void keyboard_slave_setup(void) {
#ifdef USE_MATRIX_I2C
i2c_slave_init(SLAVE_I2C_ADDRESS);
#else
serial_slave_init();
#endif
}
void split_keyboard_setup(void) {
isLeftHand = is_keyboard_left();
if (has_usb()) {
keyboard_master_setup();
} else {
keyboard_slave_setup();
}
sei();
}

589
keyboards/lily58/serial.c
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@ -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 ////////////////////////////////
#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, 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 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)
// 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)