112 lines
3.3 KiB
C
112 lines
3.3 KiB
C
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/*
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Copyright 2019 @foostan
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Copyright 2020 Drashna Jaelre <@drashna>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef USE_SERIAL
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#ifdef SERIAL_USE_MULTI_TRANSACTION
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/* --- USE flexible API (using multi-type transaction function) --- */
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#include <stdbool.h>
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#include <stdint.h>
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#include <stddef.h>
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#include <split_scomm.h>
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#include "serial.h"
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#ifdef CONSOLE_ENABLE
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#include "debug.h"
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#endif
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uint8_t volatile serial_slave_buffer[SERIAL_SLAVE_BUFFER_LENGTH] = {0};
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uint8_t volatile serial_master_buffer[SERIAL_MASTER_BUFFER_LENGTH] = {0};
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uint8_t volatile status_com = 0;
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uint8_t volatile status1 = 0;
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uint8_t slave_buffer_change_count = 0;
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uint8_t s_change_old = 0xff;
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uint8_t s_change_new = 0xff;
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SSTD_t transactions[] = {
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#define GET_SLAVE_STATUS 0
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/* master buffer not changed, only recive slave_buffer_change_count */
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{ (uint8_t *)&status_com,
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0, NULL,
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sizeof(slave_buffer_change_count), &slave_buffer_change_count,
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},
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#define PUT_MASTER_GET_SLAVE_STATUS 1
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/* master buffer changed need send, and recive slave_buffer_change_count */
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{ (uint8_t *)&status_com,
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sizeof(serial_master_buffer), (uint8_t *)serial_master_buffer,
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sizeof(slave_buffer_change_count), &slave_buffer_change_count,
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},
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#define GET_SLAVE_BUFFER 2
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/* recive serial_slave_buffer */
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{ (uint8_t *)&status1,
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0, NULL,
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sizeof(serial_slave_buffer), (uint8_t *)serial_slave_buffer
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}
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};
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void serial_master_init(void)
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{
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soft_serial_initiator_init(transactions, TID_LIMIT(transactions));
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}
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void serial_slave_init(void)
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{
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soft_serial_target_init(transactions, TID_LIMIT(transactions));
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}
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// 0 => no error
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// 1 => slave did not respond
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// 2 => checksum error
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int serial_update_buffers(int master_update)
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{
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int status, smatstatus;
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static int need_retry = 0;
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if( s_change_old != s_change_new ) {
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smatstatus = soft_serial_transaction(GET_SLAVE_BUFFER);
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if( smatstatus == TRANSACTION_END ) {
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s_change_old = s_change_new;
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#ifdef CONSOLE_ENABLE
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if (debug_matrix) {
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uprintf("slave matrix = %b %b %b %b\n",
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serial_slave_buffer[0], serial_slave_buffer[1],
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serial_slave_buffer[2], serial_slave_buffer[3]);
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}
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#endif
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}
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} else {
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// serial_slave_buffer dosen't change
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smatstatus = TRANSACTION_END; // dummy status
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}
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if( !master_update && !need_retry) {
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status = soft_serial_transaction(GET_SLAVE_STATUS);
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} else {
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status = soft_serial_transaction(PUT_MASTER_GET_SLAVE_STATUS);
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}
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if( status == TRANSACTION_END ) {
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s_change_new = slave_buffer_change_count;
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need_retry = 0;
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} else {
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need_retry = 1;
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}
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return smatstatus;
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}
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#endif // SERIAL_USE_MULTI_TRANSACTION
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#endif /* USE_SERIAL */
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