forked from espressif/arduino-esp32
Initial Commit
This commit is contained in:
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/* Copyright 2018 Espressif Systems (Shanghai) PTE LTD
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _MB_IFACE_COMMON_H
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#define _MB_IFACE_COMMON_H
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#include "driver/uart.h" // for UART types
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define MB_CONTROLLER_STACK_SIZE (CONFIG_FMB_CONTROLLER_STACK_SIZE) // Stack size for Modbus controller
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#define MB_CONTROLLER_PRIORITY (CONFIG_FMB_SERIAL_TASK_PRIO - 1) // priority of MB controller task
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// Default port defines
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#define MB_DEVICE_ADDRESS (1) // Default slave device address in Modbus
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#define MB_DEVICE_SPEED (115200) // Default Modbus speed for now hard defined
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#define MB_UART_PORT (UART_NUM_MAX - 1) // Default UART port number
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#define MB_PAR_INFO_TOUT (10) // Timeout for get parameter info
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#define MB_PARITY_NONE (UART_PARITY_DISABLE)
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// The Macros below handle the endianness while transfer N byte data into buffer
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#define _XFER_4_RD(dst, src) { \
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*(uint8_t *)(dst)++ = *(uint8_t*)(src + 1); \
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*(uint8_t *)(dst)++ = *(uint8_t*)(src + 0); \
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*(uint8_t *)(dst)++ = *(uint8_t*)(src + 3); \
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*(uint8_t *)(dst)++ = *(uint8_t*)(src + 2); \
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(src) += 4; \
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}
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#define _XFER_2_RD(dst, src) { \
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*(uint8_t *)(dst)++ = *(uint8_t *)(src + 1); \
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*(uint8_t *)(dst)++ = *(uint8_t *)(src + 0); \
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(src) += 2; \
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}
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#define _XFER_4_WR(dst, src) { \
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*(uint8_t *)(dst + 1) = *(uint8_t *)(src)++; \
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*(uint8_t *)(dst + 0) = *(uint8_t *)(src)++; \
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*(uint8_t *)(dst + 3) = *(uint8_t *)(src)++; \
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*(uint8_t *)(dst + 2) = *(uint8_t *)(src)++ ; \
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}
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#define _XFER_2_WR(dst, src) { \
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*(uint8_t *)(dst + 1) = *(uint8_t *)(src)++; \
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*(uint8_t *)(dst + 0) = *(uint8_t *)(src)++; \
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}
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/**
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* @brief Types of actual Modbus implementation
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*/
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typedef enum
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{
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MB_PORT_SERIAL_MASTER = 0x00, /*!< Modbus port type serial master. */
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MB_PORT_SERIAL_SLAVE, /*!< Modbus port type serial slave. */
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MB_PORT_TCP_MASTER, /*!< Modbus port type TCP master. */
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MB_PORT_TCP_SLAVE, /*!< Modbus port type TCP slave. */
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MB_PORT_COUNT /*!< Modbus port count. */
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} mb_port_type_t;
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/**
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* @brief Event group for parameters notification
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*/
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typedef enum
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{
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MB_EVENT_NO_EVENTS = 0x00,
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MB_EVENT_HOLDING_REG_WR = BIT0, /*!< Modbus Event Write Holding registers. */
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MB_EVENT_HOLDING_REG_RD = BIT1, /*!< Modbus Event Read Holding registers. */
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MB_EVENT_INPUT_REG_RD = BIT3, /*!< Modbus Event Read Input registers. */
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MB_EVENT_COILS_WR = BIT4, /*!< Modbus Event Write Coils. */
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MB_EVENT_COILS_RD = BIT5, /*!< Modbus Event Read Coils. */
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MB_EVENT_DISCRETE_RD = BIT6, /*!< Modbus Event Read Discrete bits. */
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MB_EVENT_STACK_STARTED = BIT7 /*!< Modbus Event Stack started */
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} mb_event_group_t;
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/**
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* @brief Type of Modbus parameter
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*/
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typedef enum {
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MB_PARAM_HOLDING = 0x00, /*!< Modbus Holding register. */
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MB_PARAM_INPUT, /*!< Modbus Input register. */
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MB_PARAM_COIL, /*!< Modbus Coils. */
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MB_PARAM_DISCRETE, /*!< Modbus Discrete bits. */
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MB_PARAM_COUNT,
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MB_PARAM_UNKNOWN = 0xFF
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} mb_param_type_t;
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/*!
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* \brief Modbus serial transmission modes (RTU/ASCII).
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*/
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typedef enum {
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MB_MODE_RTU, /*!< RTU transmission mode. */
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MB_MODE_ASCII, /*!< ASCII transmission mode. */
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MB_MODE_TCP /*!< TCP mode. */
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} mb_mode_type_t; // Todo: This is common type leave it here for now
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/**
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* @brief Device communication structure to setup Modbus controller
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*/
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typedef union {
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// Serial communication structure
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struct {
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mb_mode_type_t mode; /*!< Modbus communication mode */
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uint8_t slave_addr; /*!< Modbus slave address field (dummy for master) */
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uart_port_t port; /*!< Modbus communication port (UART) number */
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uint32_t baudrate; /*!< Modbus baudrate */
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uart_parity_t parity; /*!< Modbus UART parity settings */
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uint16_t dummy_port; /*!< Dummy field, unused */
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};
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// Tcp communication structure
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struct {
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mb_mode_type_t tcp_mode; /*!< Modbus communication mode */
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uint8_t dummy_addr; /*!< Modbus slave address field (dummy for master) */
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uart_port_t dummy_uart_port; /*!< Modbus communication port (UART) number */
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uint32_t dummy_baudrate; /*!< Modbus baudrate */
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uart_parity_t dummy_parity; /*!< Modbus UART parity settings */
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uint16_t tcp_port; /*!< Modbus TCP port */
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};
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} mb_communication_info_t;
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/**
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* common interface method types
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*/
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typedef esp_err_t (*iface_init)(mb_port_type_t, void**); /*!< Interface method init */
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typedef esp_err_t (*iface_destroy)(void); /*!< Interface method destroy */
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typedef esp_err_t (*iface_setup)(void*); /*!< Interface method setup */
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typedef esp_err_t (*iface_start)(void); /*!< Interface method start */
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#ifdef __cplusplus
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}
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#endif
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#endif // _MB_IFACE_COMMON_H
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@ -0,0 +1,249 @@
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/* Copyright 2018 Espressif Systems (Shanghai) PTE LTD
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
|
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* distributed under the License is distributed on an "AS IS" BASIS,
|
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _ESP_MB_MASTER_INTERFACE_H
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#define _ESP_MB_MASTER_INTERFACE_H
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#include <stdint.h> // for standard int types definition
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#include <stddef.h> // for NULL and std defines
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#include "soc/soc.h" // for BITN definitions
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#include "esp_modbus_common.h" // for common types
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*!
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* \brief Modbus descriptor table parameter type defines.
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*/
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typedef enum {
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PARAM_TYPE_U8 = 0x00, /*!< Unsigned 8 */
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PARAM_TYPE_U16 = 0x01, /*!< Unsigned 16 */
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PARAM_TYPE_U32 = 0x02, /*!< Unsigned 32 */
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PARAM_TYPE_FLOAT = 0x03, /*!< Float type */
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PARAM_TYPE_ASCII = 0x04 /*!< ASCII type */
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} mb_descr_type_t;
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/*!
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* \brief Modbus descriptor table parameter size in bytes.
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*/
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typedef enum {
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PARAM_SIZE_U8 = 0x01, /*!< Unsigned 8 */
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PARAM_SIZE_U16 = 0x02, /*!< Unsigned 16 */
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PARAM_SIZE_U32 = 0x04, /*!< Unsigned 32 */
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PARAM_SIZE_FLOAT = 0x04, /*!< Float size */
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PARAM_SIZE_ASCII = 0x08, /*!< ASCII size */
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PARAM_SIZE_ASCII24 = 0x18, /*!< ASCII24 size */
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PARAM_MAX_SIZE
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} mb_descr_size_t;
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/*!
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* \brief Modbus parameter options for description table
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*/
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typedef union {
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struct {
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int opt1; /*!< Parameter option1 */
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int opt2; /*!< Parameter option2 */
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int opt3; /*!< Parameter option3 */
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};
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struct {
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int min; /*!< Parameter minimum value */
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int max; /*!< Parameter maximum value */
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int step; /*!< Step of parameter change tracking */
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};
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} mb_parameter_opt_t;
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/**
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* @brief Permissions for the characteristics
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*/
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typedef enum {
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PAR_PERMS_READ = 1 << BIT0, /**< the characteristic of the device are readable */
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PAR_PERMS_WRITE = 1 << BIT1, /**< the characteristic of the device are writable*/
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PAR_PERMS_TRIGGER = 1 << BIT2, /**< the characteristic of the device are triggerable */
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PAR_PERMS_READ_WRITE = PAR_PERMS_READ | PAR_PERMS_WRITE, /**< the characteristic of the device are readable & writable */
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PAR_PERMS_READ_TRIGGER = PAR_PERMS_READ | PAR_PERMS_TRIGGER, /**< the characteristic of the device are readable & triggerable */
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PAR_PERMS_WRITE_TRIGGER = PAR_PERMS_WRITE | PAR_PERMS_TRIGGER, /**< the characteristic of the device are writable & triggerable */
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PAR_PERMS_READ_WRITE_TRIGGER = PAR_PERMS_READ_WRITE | PAR_PERMS_TRIGGER, /**< the characteristic of the device are readable & writable & triggerable */
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} mb_param_perms_t;
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/**
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* @brief Characteristics descriptor type is used to describe characteristic and
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* link it with Modbus parameters that reflect its data.
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*/
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typedef struct {
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uint16_t cid; /*!< Characteristic cid */
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const char* param_key; /*!< The key (name) of the parameter */
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const char* param_units; /*!< The physical units of the parameter */
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uint8_t mb_slave_addr; /*!< Slave address of device in the Modbus segment */
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mb_param_type_t mb_param_type; /*!< Type of modbus parameter */
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uint16_t mb_reg_start; /*!< This is the Modbus register address. This is the 0 based value. */
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uint16_t mb_size; /*!< Size of mb parameter in registers */
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uint16_t param_offset; /*!< Parameter name (OFFSET in the parameter structure) */
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mb_descr_type_t param_type; /*!< Float, U8, U16, U32, ASCII, etc. */
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mb_descr_size_t param_size; /*!< Number of bytes in the parameter. */
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mb_parameter_opt_t param_opts; /*!< Parameter options used to check limits and etc. */
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mb_param_perms_t access; /*!< Access permissions based on mode */
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} mb_parameter_descriptor_t;
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/**
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* @brief Modbus register request type structure
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*/
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typedef struct {
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uint8_t slave_addr; /*!< Modbus slave address */
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uint8_t command; /*!< Modbus command to send */
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uint16_t reg_start; /*!< Modbus start register */
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uint16_t reg_size; /*!< Modbus number of registers */
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} mb_param_request_t;
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// Master interface public functions
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/**
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* @brief Initialize Modbus controller and stack
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*
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* @param[out] handler handler(pointer) to master data structure
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* @param[in] port_type the type of port
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* @return
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* - ESP_OK Success
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* - ESP_ERR_NO_MEM Parameter error
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*/
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esp_err_t mbc_master_init(mb_port_type_t port_type, void** handler);
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/**
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* @brief Destroy Modbus controller and stack
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_INVALID_STATE Parameter error
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*/
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esp_err_t mbc_master_destroy(void);
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/**
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* @brief Start Modbus communication stack
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_INVALID_ARG Modbus stack start error
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*/
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esp_err_t mbc_master_start(void);
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/**
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* @brief Set Modbus communication parameters for the controller
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*
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* @param comm_info Communication parameters structure.
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_INVALID_ARG Incorrect parameter data
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*/
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esp_err_t mbc_master_setup(void* comm_info);
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/***************************** Specific interface functions ********************************************
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* Interface functions below provide basic methods to read/write access to slave devices in Modbus
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* segment as well as API to read specific supported characteristics linked to Modbus parameters
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* of devices in Modbus network.
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*******************************************************************************************************/
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/**
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* @brief Assign parameter description table for Modbus controller interface.
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*
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* @param[in] descriptor pointer to parameter description table
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* @param num_elements number of elements in the table
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*
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* @return
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* - esp_err_t ESP_OK - set descriptor successfully
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* - esp_err_t ESP_ERR_INVALID_ARG - invalid argument in function call
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*/
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esp_err_t mbc_master_set_descriptor(const mb_parameter_descriptor_t* descriptor, const uint16_t num_elements);
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/**
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* @brief Send data request as defined in parameter request, waits response
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* from slave and returns status of command execution. This function provides standard way
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* for read/write access to Modbus devices in the network.
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*
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* @param[in] request pointer to request structure of type mb_param_request_t
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* @param[in] data_ptr pointer to data buffer to send or received data (dependent of command field in request)
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*
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* @return
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* - esp_err_t ESP_OK - request was successful
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* - esp_err_t ESP_ERR_INVALID_ARG - invalid argument of function
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* - esp_err_t ESP_ERR_INVALID_RESPONSE - an invalid response from slave
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* - esp_err_t ESP_ERR_TIMEOUT - operation timeout or no response from slave
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* - esp_err_t ESP_ERR_NOT_SUPPORTED - the request command is not supported by slave
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* - esp_err_t ESP_FAIL - slave returned an exception or other failure
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*/
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esp_err_t mbc_master_send_request(mb_param_request_t* request, void* data_ptr);
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/**
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* @brief Get information about supported characteristic defined as cid. Uses parameter description table to get
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* this information. The function will check if characteristic defined as a cid parameter is supported
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* and returns its description in param_info. Returns ESP_ERR_NOT_FOUND if characteristic is not supported.
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*
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* @param[in] cid characteristic id
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* @param param_info pointer to pointer of characteristic data.
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*
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* @return
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* - esp_err_t ESP_OK - request was successful and buffer contains the supported characteristic name
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* - esp_err_t ESP_ERR_INVALID_ARG - invalid argument of function
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* - esp_err_t ESP_ERR_NOT_FOUND - the characteristic (cid) not found
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* - esp_err_t ESP_FAIL - unknown error during lookup table processing
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*/
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esp_err_t mbc_master_get_cid_info(uint16_t cid, const mb_parameter_descriptor_t** param_info);
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/**
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* @brief Read parameter from modbus slave device whose name is defined by name and has cid.
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* The additional data for request is taken from parameter description (lookup) table.
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*
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* @param[in] cid id of the characteristic for parameter
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* @param[in] name pointer into string name (key) of parameter (null terminated)
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||||
* @param[out] value pointer to data buffer of parameter
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* @param[out] type parameter type associated with the name returned from parameter description table.
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||||
*
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* @return
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* - esp_err_t ESP_OK - request was successful and value buffer contains
|
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* representation of actual parameter data from slave
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||||
* - esp_err_t ESP_ERR_INVALID_ARG - invalid argument of function
|
||||
* - esp_err_t ESP_ERR_INVALID_RESPONSE - an invalid response from slave
|
||||
* - esp_err_t ESP_ERR_INVALID_STATE - invalid state during data processing or allocation failure
|
||||
* - esp_err_t ESP_ERR_TIMEOUT - operation timed out and no response from slave
|
||||
* - esp_err_t ESP_ERR_NOT_SUPPORTED - the request command is not supported by slave
|
||||
* - esp_err_t ESP_ERR_NOT_FOUND - the parameter is not found in the parameter description table
|
||||
* - esp_err_t ESP_FAIL - slave returned an exception or other failure
|
||||
*/
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||||
esp_err_t mbc_master_get_parameter(uint16_t cid, char* name, uint8_t* value, uint8_t *type);
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||||
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||||
/**
|
||||
* @brief Set characteristic's value defined as a name and cid parameter.
|
||||
* The additional data for cid parameter request is taken from master parameter lookup table.
|
||||
*
|
||||
* @param[in] cid id of the characteristic for parameter
|
||||
* @param[in] name pointer into string name (key) of parameter (null terminated)
|
||||
* @param[out] value pointer to data buffer of parameter (actual representation of json value field in binary form)
|
||||
* @param[out] type pointer to parameter type associated with the name returned from parameter lookup table.
|
||||
*
|
||||
* @return
|
||||
* - esp_err_t ESP_OK - request was successful and value was saved in the slave device registers
|
||||
* - esp_err_t ESP_ERR_INVALID_ARG - invalid argument of function
|
||||
* - esp_err_t ESP_ERR_INVALID_RESPONSE - an invalid response from slave during processing of parameter
|
||||
* - esp_err_t ESP_ERR_INVALID_STATE - invalid state during data processing or allocation failure
|
||||
* - esp_err_t ESP_ERR_TIMEOUT - operation timed out and no response from slave
|
||||
* - esp_err_t ESP_ERR_NOT_SUPPORTED - the request command is not supported by slave
|
||||
* - esp_err_t ESP_FAIL - slave returned an exception or other failure
|
||||
*/
|
||||
esp_err_t mbc_master_set_parameter(uint16_t cid, char* name, uint8_t* value, uint8_t *type);
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||||
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||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif // _ESP_MB_MASTER_INTERFACE_H
|
@ -0,0 +1,131 @@
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/* Copyright 2018 Espressif Systems (Shanghai) PTE LTD
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#ifndef _ESP_MB_SLAVE_INTERFACE_H
|
||||
#define _ESP_MB_SLAVE_INTERFACE_H
|
||||
|
||||
// Public interface header for slave
|
||||
#include <stdint.h> // for standard int types definition
|
||||
#include <stddef.h> // for NULL and std defines
|
||||
#include "soc/soc.h" // for BITN definitions
|
||||
#include "freertos/FreeRTOS.h" // for task creation and queues access
|
||||
#include "freertos/event_groups.h" // for event groups
|
||||
#include "esp_modbus_common.h" // for common types
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
/**
|
||||
* @brief Parameter access event information type
|
||||
*/
|
||||
typedef struct {
|
||||
uint32_t time_stamp; /*!< Timestamp of Modbus Event (uS)*/
|
||||
uint16_t mb_offset; /*!< Modbus register offset */
|
||||
mb_event_group_t type; /*!< Modbus event type */
|
||||
uint8_t* address; /*!< Modbus data storage address */
|
||||
size_t size; /*!< Modbus event register size (number of registers)*/
|
||||
} mb_param_info_t;
|
||||
|
||||
/**
|
||||
* @brief Parameter storage area descriptor
|
||||
*/
|
||||
typedef struct {
|
||||
uint16_t start_offset; /*!< Modbus start address for area descriptor */
|
||||
mb_param_type_t type; /*!< Type of storage area descriptor */
|
||||
void* address; /*!< Instance address for storage area descriptor */
|
||||
size_t size; /*!< Instance size for area descriptor (bytes) */
|
||||
} mb_register_area_descriptor_t;
|
||||
|
||||
/**
|
||||
* @brief Initialize Modbus controller and stack
|
||||
*
|
||||
* @param[out] handler handler(pointer) to master data structure
|
||||
* @param[in] port_type type of stack
|
||||
* @return
|
||||
* - ESP_OK Success
|
||||
* - ESP_ERR_NO_MEM Parameter error
|
||||
*/
|
||||
//esp_err_t mbc_slave_init(mb_port_type_t port_type, void** handler);
|
||||
esp_err_t mbc_slave_init(mb_port_type_t port_type, void** handler);
|
||||
|
||||
/**
|
||||
* @brief Destroy Modbus controller and stack
|
||||
*
|
||||
* @return
|
||||
* - ESP_OK Success
|
||||
* - ESP_ERR_INVALID_STATE Parameter error
|
||||
*/
|
||||
esp_err_t mbc_slave_destroy(void);
|
||||
|
||||
/**
|
||||
* @brief Start Modbus communication stack
|
||||
*
|
||||
* @return
|
||||
* - ESP_OK Success
|
||||
* - ESP_ERR_INVALID_ARG Modbus stack start error
|
||||
*/
|
||||
esp_err_t mbc_slave_start(void);
|
||||
|
||||
/**
|
||||
* @brief Set Modbus communication parameters for the controller
|
||||
*
|
||||
* @param comm_info Communication parameters structure.
|
||||
*
|
||||
* @return
|
||||
* - ESP_OK Success
|
||||
* - ESP_ERR_INVALID_ARG Incorrect parameter data
|
||||
*/
|
||||
esp_err_t mbc_slave_setup(void* comm_info);
|
||||
|
||||
/**
|
||||
* @brief Wait for specific event on parameter change.
|
||||
*
|
||||
* @param group Group event bit mask to wait for change
|
||||
*
|
||||
* @return
|
||||
* - mb_event_group_t event bits triggered
|
||||
*/
|
||||
mb_event_group_t mbc_slave_check_event(mb_event_group_t group);
|
||||
|
||||
/**
|
||||
* @brief Get parameter information
|
||||
*
|
||||
* @param[out] reg_info parameter info structure
|
||||
* @param timeout Timeout in milliseconds to read information from
|
||||
* parameter queue
|
||||
* @return
|
||||
* - ESP_OK Success
|
||||
* - ESP_ERR_TIMEOUT Can not get data from parameter queue
|
||||
* or queue overflow
|
||||
*/
|
||||
esp_err_t mbc_slave_get_param_info(mb_param_info_t* reg_info, uint32_t timeout);
|
||||
|
||||
/**
|
||||
* @brief Set Modbus area descriptor
|
||||
*
|
||||
* @param descr_data Modbus registers area descriptor structure
|
||||
*
|
||||
* @return
|
||||
* - ESP_OK: The appropriate descriptor is set
|
||||
* - ESP_ERR_INVALID_ARG: The argument is incorrect
|
||||
*/
|
||||
esp_err_t mbc_slave_set_descriptor(mb_register_area_descriptor_t descr_data);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif
|
@ -0,0 +1,33 @@
|
||||
/* Copyright 2018 Espressif Systems (Shanghai) PTE LTD
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
// mbcontroller.h
|
||||
// mbcontroller - common Modbus controller header file
|
||||
|
||||
#ifndef _MODBUS_CONTROLLER_COMMON
|
||||
#define _MODBUS_CONTROLLER_COMMON
|
||||
|
||||
#include <stdint.h> // for standard int types definition
|
||||
#include <stddef.h> // for NULL and std defines
|
||||
#include "string.h" // for strerror()
|
||||
#include "errno.h" // for errno
|
||||
#include "esp_err.h" // for error handling
|
||||
#include "driver/uart.h" // for uart port number defines
|
||||
#include "sdkconfig.h" // for KConfig options
|
||||
|
||||
#include "esp_modbus_master.h"
|
||||
#include "esp_modbus_slave.h"
|
||||
|
||||
#endif
|
||||
|
Reference in New Issue
Block a user