mirror of
https://github.com/grblHAL/core.git
synced 2026-02-05 08:34:01 +08:00
144 lines
3.2 KiB
C
144 lines
3.2 KiB
C
/*
|
|
|
|
modbus.h - a lightweight ModBus implementation, interface wrapper
|
|
|
|
Part of grblHAL
|
|
|
|
Copyright (c) 2023-2025 Terje Io
|
|
|
|
grblHAL is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
grblHAL is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with grblHAL. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
*/
|
|
|
|
#include "modbus.h"
|
|
|
|
#include <string.h>
|
|
|
|
#include "nuts_bolts.h"
|
|
|
|
#define N_MODBUS_API 2
|
|
|
|
static uint_fast16_t n_api = 0, tcp_api = N_MODBUS_API, rtu_api = N_MODBUS_API;
|
|
static modbus_api_t modbus[N_MODBUS_API] = {0};
|
|
|
|
modbus_cap_t modbus_isup (void)
|
|
{
|
|
uint_fast16_t idx = n_api;
|
|
modbus_cap_t cap = {};
|
|
|
|
if(idx) do {
|
|
idx--;
|
|
if(modbus[idx].is_up()) switch(modbus[idx].interface) {
|
|
|
|
case Modbus_InterfaceRTU:
|
|
cap.rtu = On;
|
|
break;
|
|
|
|
case Modbus_InterfaceASCII:
|
|
cap.ascii = On;
|
|
break;
|
|
|
|
case Modbus_InterfaceTCP:
|
|
cap.tcp = On;
|
|
break;
|
|
}
|
|
} while(idx);
|
|
|
|
return cap;
|
|
}
|
|
|
|
bool modbus_isbusy (void)
|
|
{
|
|
bool busy = false;
|
|
|
|
uint_fast16_t idx = n_api;
|
|
|
|
if(idx) do {
|
|
idx--;
|
|
if(modbus[idx].is_busy) switch(modbus[idx].interface) {
|
|
|
|
case Modbus_InterfaceRTU:
|
|
busy = modbus[idx].is_busy();
|
|
break;
|
|
|
|
case Modbus_InterfaceASCII:
|
|
busy = modbus[idx].is_busy();
|
|
break;
|
|
|
|
case Modbus_InterfaceTCP:
|
|
busy = modbus[idx].is_busy();
|
|
break;
|
|
}
|
|
} while(idx && !busy);
|
|
|
|
return busy;
|
|
}
|
|
|
|
bool modbus_enabled (void)
|
|
{
|
|
return n_api > 0;
|
|
}
|
|
|
|
void modbus_flush_queue (void)
|
|
{
|
|
uint_fast16_t idx = n_api;
|
|
|
|
if(idx) do {
|
|
modbus[--idx].flush_queue();
|
|
} while(idx);
|
|
}
|
|
|
|
void modbus_set_silence (const modbus_silence_timeout_t *timeout)
|
|
{
|
|
if(rtu_api != N_MODBUS_API)
|
|
modbus[rtu_api].set_silence(timeout);
|
|
}
|
|
|
|
bool modbus_send (modbus_message_t *msg, const modbus_callbacks_t *callbacks, bool block)
|
|
{
|
|
bool ok = false;
|
|
|
|
if(tcp_api != N_MODBUS_API)
|
|
ok = modbus[tcp_api].send(msg, callbacks, block);
|
|
|
|
return ok || (rtu_api != N_MODBUS_API && modbus[rtu_api].send(msg, callbacks, block));
|
|
}
|
|
|
|
uint16_t modbus_read_u16 (uint8_t *p)
|
|
{
|
|
return (*p << 8) | *(p + 1);
|
|
}
|
|
|
|
void modbus_write_u16 (uint8_t *p, uint16_t value)
|
|
{
|
|
*p = (uint8_t)(value >> 8);
|
|
*(p + 1) = (uint8_t)(value & 0x00FF);
|
|
}
|
|
|
|
bool modbus_register_api (const modbus_api_t *api)
|
|
{
|
|
bool ok;
|
|
|
|
if((ok = n_api < N_MODBUS_API)) {
|
|
memcpy(&modbus[n_api], api, sizeof(modbus_api_t));
|
|
if(api->interface == Modbus_InterfaceTCP)
|
|
tcp_api = n_api;
|
|
else if(api->interface == Modbus_InterfaceRTU)
|
|
rtu_api = n_api;
|
|
n_api++;
|
|
}
|
|
|
|
return ok;
|
|
}
|