mirror of
https://github.com/grblHAL/core.git
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90 lines
2.1 KiB
C
90 lines
2.1 KiB
C
/*
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modbus.h - a lightweight ModBus implementation, interface wrapper
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Part of grblHAL
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Copyright (c) 2023 Terje Io
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Grbl 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 3 of the License, or
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(at your option) any later version.
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Grbl 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 Grbl. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "modbus.h"
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#include <string.h>
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#define N_MODBUS_API 2
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static uint_fast16_t n_api = 0, tcp_api = N_MODBUS_API, rtu_api = N_MODBUS_API;
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static modbus_api_t modbus[N_MODBUS_API] = {0};
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bool modbus_isup (void)
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{
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bool ok = n_api > 0;
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uint_fast16_t idx = n_api;
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if(idx) do {
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ok &= modbus[--idx].is_up();
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} while(idx);
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return ok;
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}
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bool modbus_enabled (void)
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{
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return n_api > 0;
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}
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void modbus_flush_queue (void)
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{
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uint_fast16_t idx = n_api;
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if(idx) do {
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modbus[--idx].flush_queue();
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} while(idx);
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}
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void modbus_set_silence (const modbus_silence_timeout_t *timeout)
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{
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if(rtu_api != N_MODBUS_API)
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modbus[rtu_api].set_silence(timeout);
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}
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bool modbus_send (modbus_message_t *msg, const modbus_callbacks_t *callbacks, bool block)
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{
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bool ok = false;
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if(tcp_api != N_MODBUS_API)
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ok = modbus[tcp_api].send(msg, callbacks, block);
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return ok || (rtu_api != N_MODBUS_API && modbus[rtu_api].send(msg, callbacks, block));
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}
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bool modbus_register_api (const modbus_api_t *api)
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{
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bool ok;
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if((ok = n_api < N_MODBUS_API)) {
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memcpy(&modbus[n_api], api, sizeof(modbus_api_t));
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if(api->interface == Modbus_InterfaceTCP)
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tcp_api = n_api;
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else if(api->interface == Modbus_InterfaceRTU)
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rtu_api = n_api;
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n_api++;
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}
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return ok;
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}
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