Remove tmk_core 'serial' code (#17866)

tmk_core/protocol/serial_soft.c

@@ -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();
-}