esp-idf/components/freemodbus/common/esp_modbus_master_serial.c
2021-10-23 01:23:03 +08:00

33 lines
920 B
C

/*
* SPDX-FileCopyrightText: 2016-2021 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "esp_err.h" // for esp_err_t
#include "mbc_master.h" // for master interface define
#include "esp_modbus_master.h" // for public slave defines
#include "mbc_serial_master.h" // for public interface defines
/**
* Initialization of Modbus master serial
*/
esp_err_t mbc_master_init(mb_port_type_t port_type, void** handler)
{
void* port_handler = NULL;
esp_err_t error = ESP_ERR_NOT_SUPPORTED;
switch(port_type)
{
case MB_PORT_SERIAL_MASTER:
error = mbc_serial_master_create(&port_handler);
break;
default:
return ESP_ERR_NOT_SUPPORTED;
}
if ((port_handler != NULL) && (error == ESP_OK)) {
mbc_master_init_iface(port_handler);
*handler = port_handler;
}
return error;
}