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Keyboard: [Fortitude60] LED fix and Serial improvement (#3982) 

* arrangement Underglow

* modified serial function references from helix

* Remove defines (ws2812_*REG)
This commit is contained in:
Pekaso 2018-09-28 10:06:19 +09:00 committed by Drashna Jaelre
parent 8ef747accf
commit a65085a893
9 changed files with 422 additions and 152 deletions
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1
keyboards/fortitude60/config.h
View File

@ -19,5 +19,6 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#define CONFIG_H
#include "config_common.h"
#include <serial_config.h>
#endif // CONFIG_H

1
keyboards/fortitude60/keymaps/default/config.h
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@ -28,7 +28,6 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
// #define MASTER_RIGHT
#define EE_HANDS
#define USE_SERIAL_PD2
/* #undef RGBLED_NUM */
/* #define RGBLIGHT_ANIMATIONS */
/* #define RGBLED_NUM 12 */

4
keyboards/fortitude60/keymaps/default/keymap.c
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@ -119,9 +119,9 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
* ,-----------------------------------------. ,-----------------------------------------.
* | ` | 1 | 2 | 3 | 4 | 5 | | 6 | 7 | 8 | 9 | 0 | Del |
* |------+------+------+------+------+------. ,------+------+------+------+------+------|
* | ` | 1 | 2 | 3 | 4 | 5 | | 6 | 7 | 8 | 9 | 0 | Bksp |
* | ` | 1 | ↑ | 3 | 4 | 5 | | 6 | 7 | 8 | 9 | 0 | Bksp |
* |------+------+------+------+------+------. ,------+------+------+------+------+------|
* | Del | F1 | F2 | F3 | F4 | F5 | | F6 | - | = | [ | ] | | |
* | Del | ← | ↓ | → | F4 | F5 | | F6 | - | = | [ | ] | | |
* |------+------+------+------+------+------+-------------+------+------+------+------+------+------|
* | | F7 | F8 | F9 | F10 | F11 | | | F12 |ISO # |ISO / | | | |
* `-------------+------+------+------+------+------+------+------+------+------+------+-------------'

1
keyboards/fortitude60/keymaps/default/rules.mk
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@ -1 +1,2 @@
RGBLIGHT_ENABLE = no
BACKLIGHT_ENABLE = no

11
keyboards/fortitude60/rev1/config.h
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@ -64,12 +64,11 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
)
/* ws2812 RGB LED */
/* #define RGB_DI_PIN D3 */
/* #define RGBLIGHT_TIMER */
/* #define RGBLED_NUM 16 // Number of LEDs */
/* #define ws2812_PORTREG PORTD */
/* #define ws2812_DDRREG DDRD */
#ifdef RGBLIGHT_ENABLE
#define RGB_DI_PIN B5
#define RGBLIGHT_TIMER
#define RGBLED_NUM 18 // Number of LEDs */
#endif
/*
* Feature disable options
* These options are also useful to firmware size reduction.

1
keyboards/fortitude60/rev1/rules.mk
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@ -1 +0,0 @@
BACKLIGHT_ENABLE = yes

455
keyboards/fortitude60/serial.c
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@ -9,34 +9,128 @@
#include <avr/io.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include <stddef.h>
#include <stdbool.h>
#include "serial.h"
//#include <pro_micro.h>
#ifndef USE_I2C
#ifdef USE_SERIAL
// Serial pulse period in microseconds. Its probably a bad idea to lower this
// value.
#define SERIAL_DELAY 24
#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;
uint8_t volatile serial_slave_buffer[SERIAL_SLAVE_BUFFER_LENGTH] = {0};
uint8_t volatile serial_master_buffer[SERIAL_MASTER_BUFFER_LENGTH] = {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
}
};
#define SLAVE_DATA_CORRUPT (1<<0)
volatile uint8_t status = 0;
void serial_master_init(void)
{ soft_serial_initiator_init(transactions); }
void serial_slave_init(void)
{ soft_serial_target_init(transactions); }
// 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
#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();
void soft_serial_target_init(SSTD_t *sstd_table)
{
Transaction_table = sstd_table;
serial_input_with_pullup();
#ifndef USE_SERIAL_PD2
// Enable INT0
EIMSK |= _BV(INT0);
// Trigger on falling edge of INT0
EICRA &= ~(_BV(ISC00) | _BV(ISC01));
#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();
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);
}
}
// interrupt handle to be used by the slave device
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
}
// interrupt handle to be used by the target device
ISR(SERIAL_PIN_INTERRUPT) {
sync_send();
uint8_t checksum = 0;
for (int i = 0; i < SERIAL_SLAVE_BUFFER_LENGTH; ++i) {
serial_write_byte(serial_slave_buffer[i]);
sync_send();
checksum += serial_slave_buffer[i];
}
serial_write_byte(checksum);
sync_send();
#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();
// wait for the sync to finish sending
serial_delay();
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
// read the middle of pulses
_delay_us(SERIAL_DELAY/2);
// 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();
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();
serial_input(); // end transaction
if ( checksum_computed != checksum_received ) {
status |= SLAVE_DATA_CORRUPT;
// 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;
}
sync_recv(); //weit initiator output to high
}
inline
bool serial_slave_DATA_CORRUPT(void) {
return status & SLAVE_DATA_CORRUPT;
}
// 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();
#else
// send transaction table index
sync_send();
_delay_sub_us(TID_SEND_ADJUST);
serial_write_chunk(sstd_index, 4);
serial_delay_half1();
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];
}
uint8_t checksum_received = serial_read_byte();
sync_recv();
if (checksum_computed != checksum_received) {
sei();
return 2;
// wait for the target response (step1 low->high)
serial_input_with_pullup();
while( !serial_read_pin() ) {
_delay_sub_us(2);
}
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];
// 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);
}
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

86
keyboards/fortitude60/serial.h
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@ -1,32 +1,80 @@
#ifndef MY_SERIAL_H
#define MY_SERIAL_H
#ifndef SOFT_SERIAL_H
#define SOFT_SERIAL_H
#include "config.h"
#include <stdbool.h>
/* TODO: some defines for interrupt setup */
#define SERIAL_PIN_DDR DDRD
#define SERIAL_PIN_PORT PORTD
#define SERIAL_PIN_INPUT PIND
// /////////////////////////////////////////////////////////////////
// Need Soft Serial defines in serial_config.h
// /////////////////////////////////////////////////////////////////
// ex.
// #define SERIAL_PIN_DDR DDRD
// #define SERIAL_PIN_PORT PORTD
// #define SERIAL_PIN_INPUT PIND
// #define SERIAL_PIN_MASK _BV(PD?) ?=0,2
// #define SERIAL_PIN_INTERRUPT INT?_vect ?=0,2
//
// //// USE Simple API (OLD API, compatible with let's split serial.c)
// ex.
// #define SERIAL_SLAVE_BUFFER_LENGTH MATRIX_ROWS/2
// #define SERIAL_MASTER_BUFFER_LENGTH 1
//
// //// USE flexible API (using multi-type transaction function)
// #define SERIAL_USE_MULTI_TRANSACTION
//
// /////////////////////////////////////////////////////////////////
#ifndef USE_SERIAL_PD2
#define SERIAL_PIN_MASK _BV(PD0)
#define SERIAL_PIN_INTERRUPT INT0_vect
#else
#define SERIAL_PIN_MASK _BV(PD2)
#define SERIAL_PIN_INTERRUPT INT2_vect
#endif
#define SERIAL_SLAVE_BUFFER_LENGTH MATRIX_ROWS/2
#define SERIAL_MASTER_BUFFER_LENGTH 1
// Buffers for master - slave communication
#ifndef SERIAL_USE_MULTI_TRANSACTION
/* --- USE Simple API (OLD API, compatible with let's split serial.c) */
#if SERIAL_SLAVE_BUFFER_LENGTH > 0
extern volatile uint8_t serial_slave_buffer[SERIAL_SLAVE_BUFFER_LENGTH];
#endif
#if SERIAL_MASTER_BUFFER_LENGTH > 0
extern volatile uint8_t serial_master_buffer[SERIAL_MASTER_BUFFER_LENGTH];
#endif
void serial_master_init(void);
void serial_slave_init(void);
int serial_update_buffers(void);
bool serial_slave_data_corrupt(void);
#endif // USE Simple API
// Soft Serial Transaction Descriptor
typedef struct _SSTD_t {
uint8_t *status;
uint8_t initiator2target_buffer_size;
uint8_t *initiator2target_buffer;
uint8_t target2initiator_buffer_size;
uint8_t *target2initiator_buffer;
} SSTD_t;
// initiator is transaction start side
void soft_serial_initiator_init(SSTD_t *sstd_table);
// target is interrupt accept side
void soft_serial_target_init(SSTD_t *sstd_table);
// initiator resullt
#define TRANSACTION_END 0
#define TRANSACTION_NO_RESPONSE 0x1
#define TRANSACTION_DATA_ERROR 0x2
#ifndef SERIAL_USE_MULTI_TRANSACTION
int soft_serial_transaction(void);
#else
int soft_serial_transaction(int sstd_index);
#endif
// target status
// *SSTD_t.status has
// initiator:
// TRANSACTION_END
// or TRANSACTION_NO_RESPONSE
// or TRANSACTION_DATA_ERROR
// target:
// TRANSACTION_DATA_ERROR
// or TRANSACTION_ACCEPTED
#define TRANSACTION_ACCEPTED 0x4
#ifdef SERIAL_USE_MULTI_TRANSACTION
int soft_serial_get_and_clean_status(int sstd_index);
#endif
#endif /* SOFT_SERIAL_H */

14
keyboards/fortitude60/serial_config.h Normal file
View File

@ -0,0 +1,14 @@
#ifndef SOFT_SERIAL_CONFIG_H
#define SOFT_SERIAL_CONFIG_H
/* Soft Serial defines */
#define SERIAL_PIN_DDR DDRD
#define SERIAL_PIN_PORT PORTD
#define SERIAL_PIN_INPUT PIND
#define SERIAL_PIN_MASK _BV(PD2)
#define SERIAL_PIN_INTERRUPT INT2_vect
#define SERIAL_SLAVE_BUFFER_LENGTH MATRIX_ROWS/2
#define SERIAL_MASTER_BUFFER_LENGTH 1
#endif /* SOFT_SERIAL_CONFIG_H */