Remove tmk_core 'serial' code (#17866)
This commit is contained in:
Joel Challis
GitHub
parent
972f9a612c
commit
764c542bef
|
|
@ -1,234 +0,0 @@
|
|||
/*
|
||||
Copyright 2012 Jun WAKO <wakojun@gmail.com>
|
||||
|
||||
This software is licensed with a Modified BSD License.
|
||||
All of this is supposed to be Free Software, Open Source, DFSG-free,
|
||||
GPL-compatible, and OK to use in both free and proprietary applications.
|
||||
Additions and corrections to this file are welcome.
|
||||
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
|
||||
* Redistributions in binary form must reproduce the above copyright
|
||||
notice, this list of conditions and the following disclaimer in
|
||||
the documentation and/or other materials provided with the
|
||||
distribution.
|
||||
|
||||
* Neither the name of the copyright holders nor the names of
|
||||
contributors may be used to endorse or promote products derived
|
||||
from this software without specific prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||||
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
||||
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||||
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||||
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||||
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include <stdbool.h>
|
||||
#include <avr/io.h>
|
||||
#include <avr/interrupt.h>
|
||||
#include <util/delay.h>
|
||||
#include "serial.h"
|
||||
|
||||
/*
|
||||
* Stupid Inefficient Busy-wait Software Serial
|
||||
* which is still useful for negative logic signal like Sun protocol
|
||||
* if it is not supported by hardware UART.
|
||||
*
|
||||
* TODO: delay is not accurate enough. Instruction cycle should be counted and inline assemby is needed.
|
||||
*/
|
||||
|
||||
#define WAIT_US (1000000L / SERIAL_SOFT_BAUD)
|
||||
|
||||
#ifdef SERIAL_SOFT_LOGIC_NEGATIVE
|
||||
# define SERIAL_SOFT_RXD_IN() !(SERIAL_SOFT_RXD_READ())
|
||||
# define SERIAL_SOFT_TXD_ON() SERIAL_SOFT_TXD_LO()
|
||||
# define SERIAL_SOFT_TXD_OFF() SERIAL_SOFT_TXD_HI()
|
||||
#else
|
||||
# define SERIAL_SOFT_RXD_IN() !!(SERIAL_SOFT_RXD_READ())
|
||||
# define SERIAL_SOFT_TXD_ON() SERIAL_SOFT_TXD_HI()
|
||||
# define SERIAL_SOFT_TXD_OFF() SERIAL_SOFT_TXD_LO()
|
||||
#endif
|
||||
|
||||
#ifdef SERIAL_SOFT_PARITY_EVEN
|
||||
# define SERIAL_SOFT_PARITY_VAL 0
|
||||
#elif defined(SERIAL_SOFT_PARITY_ODD)
|
||||
# define SERIAL_SOFT_PARITY_VAL 1
|
||||
#endif
|
||||
|
||||
/* debug for signal timing, see debug pin with oscilloscope */
|
||||
#ifdef SERIAL_SOFT_DEBUG
|
||||
# define SERIAL_SOFT_DEBUG_INIT() (DDRD |= 1 << 7)
|
||||
# define SERIAL_SOFT_DEBUG_TGL() (PORTD ^= 1 << 7)
|
||||
#else
|
||||
# define SERIAL_SOFT_DEBUG_INIT()
|
||||
# define SERIAL_SOFT_DEBUG_TGL()
|
||||
#endif
|
||||
|
||||
void serial_init(void) {
|
||||
SERIAL_SOFT_DEBUG_INIT();
|
||||
|
||||
SERIAL_SOFT_RXD_INIT();
|
||||
SERIAL_SOFT_TXD_INIT();
|
||||
}
|
||||
|
||||
/* RX ring buffer */
|
||||
#define RBUF_SIZE 8
|
||||
static uint8_t rbuf[RBUF_SIZE];
|
||||
static uint8_t rbuf_head = 0;
|
||||
static uint8_t rbuf_tail = 0;
|
||||
|
||||
uint8_t serial_recv(void) {
|
||||
uint8_t data = 0;
|
||||
if (rbuf_head == rbuf_tail) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
data = rbuf[rbuf_tail];
|
||||
rbuf_tail = (rbuf_tail + 1) % RBUF_SIZE;
|
||||
return data;
|
||||
}
|
||||
|
||||
int16_t serial_recv2(void) {
|
||||
uint8_t data = 0;
|
||||
if (rbuf_head == rbuf_tail) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
data = rbuf[rbuf_tail];
|
||||
rbuf_tail = (rbuf_tail + 1) % RBUF_SIZE;
|
||||
return data;
|
||||
}
|
||||
|
||||
void serial_send(uint8_t data) {
|
||||
/* signal state: IDLE: ON, START: OFF, STOP: ON, DATA0: OFF, DATA1: ON */
|
||||
|
||||
#ifdef SERIAL_SOFT_BIT_ORDER_MSB
|
||||
# ifdef SERIAL_SOFT_DATA_7BIT
|
||||
uint8_t mask = 0x40;
|
||||
# else
|
||||
uint8_t mask = 0x80;
|
||||
# endif
|
||||
#else
|
||||
uint8_t mask = 0x01;
|
||||
#endif
|
||||
|
||||
uint8_t parity = 0;
|
||||
|
||||
/* start bit */
|
||||
SERIAL_SOFT_TXD_OFF();
|
||||
_delay_us(WAIT_US);
|
||||
|
||||
#ifdef SERIAL_SOFT_DATA_7BIT
|
||||
while (mask & 0x7F) {
|
||||
#else
|
||||
while (mask & 0xFF) {
|
||||
#endif
|
||||
if (data & mask) {
|
||||
SERIAL_SOFT_TXD_ON();
|
||||
parity ^= 1;
|
||||
} else {
|
||||
SERIAL_SOFT_TXD_OFF();
|
||||
}
|
||||
_delay_us(WAIT_US);
|
||||
|
||||
#ifdef SERIAL_SOFT_BIT_ORDER_MSB
|
||||
mask >>= 1;
|
||||
#else
|
||||
mask <<= 1;
|
||||
#endif
|
||||
}
|
||||
|
||||
#if defined(SERIAL_SOFT_PARITY_EVEN) || defined(SERIAL_SOFT_PARITY_ODD)
|
||||
/* to center of parity bit */
|
||||
if (parity != SERIAL_SOFT_PARITY_VAL) {
|
||||
SERIAL_SOFT_TXD_ON();
|
||||
} else {
|
||||
SERIAL_SOFT_TXD_OFF();
|
||||
}
|
||||
_delay_us(WAIT_US);
|
||||
#endif
|
||||
|
||||
/* stop bit */
|
||||
SERIAL_SOFT_TXD_ON();
|
||||
_delay_us(WAIT_US);
|
||||
}
|
||||
|
||||
/* detect edge of start bit */
|
||||
ISR(SERIAL_SOFT_RXD_VECT) {
|
||||
SERIAL_SOFT_DEBUG_TGL();
|
||||
SERIAL_SOFT_RXD_INT_ENTER();
|
||||
|
||||
uint8_t data = 0;
|
||||
|
||||
#ifdef SERIAL_SOFT_BIT_ORDER_MSB
|
||||
# ifdef SERIAL_SOFT_DATA_7BIT
|
||||
uint8_t mask = 0x40;
|
||||
# else
|
||||
uint8_t mask = 0x80;
|
||||
# endif
|
||||
#else
|
||||
uint8_t mask = 0x01;
|
||||
#endif
|
||||
|
||||
uint8_t parity = 0;
|
||||
|
||||
/* to center of start bit */
|
||||
_delay_us(WAIT_US / 2);
|
||||
SERIAL_SOFT_DEBUG_TGL();
|
||||
do {
|
||||
/* to center of next bit */
|
||||
_delay_us(WAIT_US);
|
||||
|
||||
SERIAL_SOFT_DEBUG_TGL();
|
||||
if (SERIAL_SOFT_RXD_IN()) {
|
||||
data |= mask;
|
||||
parity ^= 1;
|
||||
}
|
||||
#ifdef SERIAL_SOFT_BIT_ORDER_MSB
|
||||
mask >>= 1;
|
||||
#else
|
||||
mask <<= 1;
|
||||
#endif
|
||||
#ifdef SERIAL_SOFT_DATA_7BIT
|
||||
} while (mask & 0x7F);
|
||||
#else
|
||||
} while (mask & 0xFF);
|
||||
#endif
|
||||
|
||||
#if defined(SERIAL_SOFT_PARITY_EVEN) || defined(SERIAL_SOFT_PARITY_ODD)
|
||||
/* to center of parity bit */
|
||||
_delay_us(WAIT_US);
|
||||
if (SERIAL_SOFT_RXD_IN()) {
|
||||
parity ^= 1;
|
||||
}
|
||||
SERIAL_SOFT_DEBUG_TGL();
|
||||
#endif
|
||||
|
||||
/* to center of stop bit */
|
||||
_delay_us(WAIT_US);
|
||||
|
||||
uint8_t next = (rbuf_head + 1) % RBUF_SIZE;
|
||||
#if defined(SERIAL_SOFT_PARITY_EVEN) || defined(SERIAL_SOFT_PARITY_ODD)
|
||||
if ((parity == SERIAL_SOFT_PARITY_VAL) && next != rbuf_tail) {
|
||||
#else
|
||||
if (next != rbuf_tail) {
|
||||
#endif
|
||||
rbuf[rbuf_head] = data;
|
||||
rbuf_head = next;
|
||||
}
|
||||
|
||||
SERIAL_SOFT_RXD_INT_EXIT();
|
||||
SERIAL_SOFT_DEBUG_TGL();
|
||||
}
|
||||
Loading…
Reference in a new issue