This commit is contained in:
Eduard Iten 2025-06-19 17:04:34 +02:00
commit 0b5ad510fe
36 changed files with 2230 additions and 3640 deletions

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10
software/.vscode/extensions.json vendored Normal file
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@ -0,0 +1,10 @@
{
"recommendations": [
"ms-vscode.cpptools-extension-pack",
"ms-python.python",
"ms-vscode.vscode-embedded-tools",
"ms-vscode.vscode-serial-monitor",
"marus25.cortex-debug",
"donjayamanne.python-environment-manager"
]
}

28
software/.vscode/launch.json vendored Normal file
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@ -0,0 +1,28 @@
{
"version": "0.2.0",
"configurations": [
{
"name": "Launch",
"device": "STM32F103RB",
"cwd": "${workspaceFolder}",
"executable": "build/zephyr/zephyr.elf",
"request": "launch",
"type": "cortex-debug",
//"runToEntryPoint": "main",
"servertype": "jlink",
"gdbPath": "${userHome}/zephyr-sdk-0.17.1/arm-zephyr-eabi/bin/arm-zephyr-eabi-gdb",
"preLaunchTask": "West Build"
},
{
"name": "Attach",
"device": "nRF52840_xxAA",
"cwd": "${workspaceFolder}",
"executable": "build/zephyr/zephyr.elf",
"request": "attach",
"type": "cortex-debug",
// "runToEntryPoint": "main",
"servertype": "jlink",
"gdbPath": "${userHome}/zephyr-sdk-0.17.1/arm-zephyr-eabi/bin/arm-zephyr-eabi-gdb"
},
]
}

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@ -1,15 +1,12 @@
{
"nrf-connect.applications": [
"${workspaceFolder}\\modbus_test"
],
"files.associations": {
"log.h": "c",
"modbus.h": "c",
"array": "c",
"string": "c",
"string_view": "c",
"canbus.h": "c",
"kernel.h": "c",
"settings.h": "c"
}
// Hush CMake
"cmake.configureOnOpen": false,
// IntelliSense
"C_Cpp.default.compilerPath": "${userHome}/zephyr-sdk-0.17.1/arm-zephyr-eabi/bin/arm-zephyr-eabi-gcc.exe",
"C_Cpp.default.compileCommands": "${workspaceFolder}/build/compile_commands.json",
// File Associations
"files.associations": {
}
}

96
software/.vscode/tasks.json vendored Normal file
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@ -0,0 +1,96 @@
{
"version": "2.0.0",
"tasks": [
{
"label": "West Build",
"type": "shell",
"group": {
"kind": "build",
"isDefault": true
},
"linux": {
"command": "${userHome}/zephyrproject/.venv/bin/west"
},
"windows": {
"command": "${userHome}/zephyrproject/.venv/Scripts/west.exe"
},
"osx": {
"command": "${userHome}/zephyrproject/.venv/bin/west"
},
"args": [
"build",
"-p",
"auto",
"-b",
"valve_node"
],
"problemMatcher": [
"$gcc"
]
},
{
"label": "West Configurable Build",
"type": "shell",
"group": {
"kind": "build",
},
"linux": {
"command": "${userHome}/zephyrproject/.venv/bin/west"
},
"windows": {
"command": "${userHome}/zephyrproject/.venv/Scripts/west.exe"
},
"osx": {
"command": "${userHome}/zephyrproject/.venv/bin/west"
},
"args": [
"build",
"-p",
"${input:pristine}",
"-b",
"${input:board}"
],
"problemMatcher": [
"$gcc"
]
},
{
"label": "West Flash",
"type": "shell",
"linux": {
"command": "${userHome}/zephyrproject/.venv/bin/west"
},
"windows": {
"command": "${userHome}/zephyrproject/.venv/Scripts/west.exe"
},
"osx": {
"command": "${userHome}/zephyrproject/.venv/bin/west"
},
"args": [
"flash"
],
"problemMatcher": [
"$gcc"
]
}
],
"inputs": [
{
"id": "board",
"type": "promptString",
"default": "valve-node",
"description": "See https://docs.zephyrproject.org/latest/boards/index.html"
},
{
"id": "pristine",
"type": "pickString",
"description": "Choose when to run a pristine build",
"default": "auto",
"options": [
"auto",
"always",
"never"
]
}
]
}

25
software/CMakeLists.txt Normal file
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@ -0,0 +1,25 @@
# SPDX-License-Identifier: Apache-2.0
cmake_minimum_required(VERSION 3.20.0)
list(APPEND BOARD_ROOT ${CMAKE_CURRENT_SOURCE_DIR})
find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
project(valve_node)
target_sources(app PRIVATE src/main.c)
target_sources(app PRIVATE lib/canbus.c)
# source files for modbus waterlevel sensor
zephyr_library_sources_ifdef(CONFIG_HAS_MODBUS_WATERLEVEL_SENSOR
lib/waterlevel_sensor.c
)
#source files for valve
zephyr_library_sources_ifdef(CONFIG_HAS_VALVE
lib/valve.c
)
zephyr_include_directories(
lib
)

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@ -1,7 +1,7 @@
config BOARD_VALVE_NODE
select SOC_STM32F103XB
mainmenu "Controller Area Network sample application"
mainmenu "APP CAN Settings"
config LOOPBACK_MODE
bool "Loopback LOOPBACK_MODE"
default n
@ -9,6 +9,7 @@ config LOOPBACK_MODE
Set the can controller to loopback mode.
This allows testing without a second board.
mainmenu "APP Logging Settings"
config LOG_CAN_LEVEL
int "Log level for CAN"
default 3
@ -16,3 +17,42 @@ config LOG_CAN_LEVEL
help
Set the log level for CAN messages.
0 = None, 1 = Error, 2 = Warning, 3 = Info, 4 = Debug, 5 = Trace, 6 = Debug2, 7 = Debug3
config LOG_SETTINGS_LEVEL
int "Log level for settings"
default 3
range 0 7
help
Set the log level for CAN messages.
0 = None, 1 = Error, 2 = Warning, 3 = Info, 4 = Debug, 5 = Trace, 6 = Debug2, 7 = Debug3
config LOG_WATERLEVELSENSOR_LEVEL
int "Log level for waterlevel sensor"
default 3
range 0 7
help
Set the log level for CAN messages.
0 = None, 1 = Error, 2 = Warning, 3 = Info, 4 = Debug, 5 = Trace, 6 = Debug2, 7 = Debug3
config LOG_VALVE_LEVEL
int "Log level for valve control"
default 3
range 0 7
help
Set the log level for valve control messages.
0 = None, 1 = Error, 2 = Warning, 3 = Info, 4 = Debug, 5 = Trace, 6 = Debug2, 7 = Debug3
mainmenu "Irrigation controller node configuration"
config HAS_MODBUS_WATERLEVEL_SENSOR
bool "Has modbus water level sensor"
default n
help
Enable modbus water level sensor support.
This allows reading the water level from a modbus device.
config HAS_VALVE
bool "Has valve control"
default n
help
Enable valve control support.
This allows controlling valves via CAN messages.

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@ -8,3 +8,4 @@ board_runner_args(jlink "--device=STM32F103RB" "--speed=4000")
include(${ZEPHYR_BASE}/boards/common/stm32cubeprogrammer.board.cmake)
include(${ZEPHYR_BASE}/boards/common/openocd-stm32.board.cmake)
include(${ZEPHYR_BASE}/boards/common/jlink.board.cmake)
include(${ZEPHYR_BASE}/boards/common/blackmagicprobe.board.cmake)

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@ -13,12 +13,18 @@
model = "Iten engineering Valve Node";
compatible = "iten,valve-node", "st,stm32f103rb";
can_loopback0: can_loopback0 {
status = "disabled";
compatible = "zephyr,can-loopback";
};
chosen {
zephyr,console = &usart1;
zephyr,shell-uart = &usart1;
zephyr,sram = &sram0;
zephyr,flash = &flash0;
zephyr,canbus = &can1;
//zephyr,canbus = &can_loopback0;
};
leds: leds {
@ -73,6 +79,10 @@
gpios = <&gpiob 13 0>;
label = "Motor Open";
};
fake: fake {
gpios = <&gpiob 11 GPIO_PULL_UP>;
label = "CAN RX pullup";
};
};
};
@ -174,7 +184,7 @@
pinctrl-0 = <&can_rx_pa11 &can_tx_pa12>;
pinctrl-names = "default";
status= "okay";
bus-speed = < 125000 >;
bus-speed = <125000>;
};
&exti {

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@ -18,6 +18,7 @@ CONFIG_MODBUS_ROLE_CLIENT=y
CONFIG_CAN=y
CONFIG_CAN_INIT_PRIORITY=80
#CONFIG_CAN_MAX_FILTER=5
CONFIG_CAN_ACCEPT_RTR=y
# settings
CONFIG_FLASH=y

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@ -1,81 +1,152 @@
#include "canbus.h"
#include <zephyr/logging/log.h>
#include <zephyr/kernel.h>
#include "settings.h"
#include <zephyr/sys/byteorder.h>
#include <zephyr/drivers/can.h>
#include <stdlib.h>
#ifdef CONFIG_HAS_MODBUS_WATERLEVEL_SENSOR
#include "waterlevel_sensor.h"
#endif // CONFIG_HAS_MODBUS_WATERLEVEL_SENSOR
#ifdef CONFIG_HAS_VALVE
#include "valve.h"
#endif // CONFIG_HAS_VALVE
const struct device *const can_dev = DEVICE_DT_GET(DT_CHOSEN(zephyr_canbus));
K_THREAD_STACK_DEFINE(rx_thread_stack, RX_THREAD_STACK_SIZE);
static uint8_t node_id = 12; // Default node ID
LOG_MODULE_REGISTER(canbus, CONFIG_LOG_CAN_LEVEL);
static int canbus_set(const char *key, size_t len, settings_read_cb read_cb, void *cb_arg)
K_MSGQ_DEFINE(canbus_msgq, sizeof(struct can_frame), CANBUS_RX_MSGQ_SIZE, 4);
K_THREAD_STACK_DEFINE(canbus_rx_stack, CANBUS_RX_THREAD_STACK_SIZE);
uint8_t node_id = 0; // Default node ID, can be set later
uint8_t can_msg_id = 0;
k_tid_t canbus_rx_thread_id;
struct k_thread canbus_rx_thread_data;
int canbus_rx_filter_id = -1;
void canbus_rx_callback(const struct device *dev, struct can_frame *frame, void *user_data)
{
const char *next;
int rc;
ARG_UNUSED(dev);
ARG_UNUSED(user_data);
// Handle setting values for CAN bus configuration
LOG_DBG("Setting CAN bus configuration: key=%s, len=%zu", key, len);
if (settings_name_steq(key, "node_id", &next) && next != NULL)
if (frame->id >> 8 != node_id) // Check if the frame ID matches the node ID
{
if (len != sizeof(node_id))
{
LOG_ERR("Invalid length for node_id setting: %zu", len);
return -EINVAL; // Invalid argument
}
rc = read_cb(cb_arg, &node_id, sizeof(node_id));
if (rc < 0)
{
LOG_ERR("Failed to read node_id setting: %d", rc);
return rc; // Read error
}
LOG_DBG("Set CAN bus node ID to: %d", node_id);
LOG_DBG("Received CAN frame with ID %d, but it does not match node ID %d", frame->id >> 8, node_id);
return; // Ignore frames that do not match the node ID
}
// Process the received CAN frame
rc = k_msgq_put(&canbus_msgq, frame, K_NO_WAIT);
if (rc != 0)
{
LOG_ERR("Failed to put CAN frame into message queue: %d", rc);
}
return 0; // Return 0 on success
}
struct settings_handler canbus_settings_handler = {
.name = "canbus",
.h_set = canbus_set, // No settings set handler
};
void canbus_thread(void *arg1, void *arg2, void *arg3)
{
ARG_UNUSED(arg1);
ARG_UNUSED(arg2);
ARG_UNUSED(arg3);
LOG_INF("CAN bus thread started");
// Main loop for CAN bus operations
while (1)
{
int rc;
struct can_frame frame;
k_msgq_get(&canbus_msgq, &frame, K_FOREVER); // Wait for a message from the queue
LOG_DBG("Received CAN frame with ID: 0x%02x, DLC: %d, RTR: %d",
frame.id, frame.dlc, (uint8_t)(frame.flags & CAN_FRAME_RTR));
LOG_HEXDUMP_DBG(frame.data, frame.dlc, "CAN frame data");
uint8_t reg = frame.id & 0xFF; // Extract register from the frame ID
bool is_rtr = (frame.flags & CAN_FRAME_RTR) != 0; // Check if it's a remote transmission request
switch (reg)
{
#ifdef CONFIG_HAS_MODBUS_WATERLEVEL_SENSOR
case CANBUS_REG_WATERLEVEL_LEVEL:
case CANBUS_REG_WATERLEVEL_ZERO_POINT:
case CANBUS_REG_WATERLEVEL_MAX_POINT:
waterlevel_command_t command;
command.cmd = is_rtr ? WATERLEVEL_CMD_GET : WATERLEVEL_CMD_SET; // Determine command type based on RTR
command.reg = reg; // Set the register ID
int16_t value = 0; // Initialize value to 0
if (!is_rtr) // If it's not a remote request, extract the value from the frame data
{
if (frame.dlc < sizeof(command.data))
{ LOG_ERR("Received frame with insufficient data length: %d", frame.dlc);
continue; // Skip processing if data length is insufficient
}
value = sys_be16_to_cpu(*(uint16_t *)frame.data); // Convert data from big-endian to host byte order
command.data = value; // Set the data field
LOG_DBG("Setting command data to: %d", value);
}
extern struct k_msgq waterlevel_sensor_msgq; // Declare the water level sensor message queue
k_msgq_put(&waterlevel_sensor_msgq, &command, K_NO_WAIT);
break;
#endif // CONFIG_HAS_MODBUS_WATERLEVEL_SENSOR
#ifdef CONFIG_HAS_VALVE
case CANBUS_REG_VALVE_STATUS:
case CANBUS_REG_VALVE_OPERATION:
if (is_rtr)
{
LOG_DBG("Received remote request for valve status or operation");
if (reg == CANBUS_REG_VALVE_STATUS)
{
valve_send_status(); // Send the current valve status
}
else if (reg == CANBUS_REG_VALVE_OPERATION)
{
valve_send_operation(); // Send the current valve operation state
} else {
LOG_ERR("Unknown valve register: 0x%02x", reg);
continue; // Skip processing if the register is unknown
}
}
else
{
LOG_ERR("Received CAN frame with data for valve status or operation, but RTR is not set");
continue; // Skip processing if RTR is not set for valve status or operation
}
break;
case CANBUS_REG_VALVE_COMMAND:
{
if (is_rtr) {
LOG_ERR("Received remote request for valve command, but this is not supported");
continue; // Skip processing if RTR is set for valve command
} else {
// Extract the command from the frame data
if (frame.dlc < sizeof(uint8_t)) {
LOG_ERR("Received frame with insufficient data length for valve command: %d", frame.dlc);
continue; // Skip processing if data length is insufficient
}
uint8_t command = frame.data[0]; // Get the command from the first byte of data
LOG_DBG("Received valve command: 0x%02x", command);
rc = valve_cmd(command); // Send the command to the valve
if (rc < 0) {
LOG_ERR("Failed to send valve command: %d", rc);
continue; // Skip processing if sending the command failed
}
}
break;
}
default:
LOG_DBG("Received CAN frame with unknown register: 0x%02x", reg);
break;
}
#endif // CONFIG_HAS_VALVE
}
}
int canbus_init(void)
{
int rc;
settings_subsys_init();
settings_register(&canbus_settings_handler);
settings_load();
rc = settings_get_val_len("canbus/node_id");
if (rc < 0)
{
LOG_ERR("Failed to check CAN bus settings: %d", rc);
return rc;
}
else if (rc == 0)
{
LOG_WRN("No CAN bus node id found in settings, using default default (%d)", node_id);
settings_save_one("canbus/node_id", &node_id, sizeof(node_id));
if (rc < 0)
{
LOG_ERR("Failed to save default CAN bus node id: %d", rc);
return rc;
}
}
else
{
rc = settings_load_one("canbus/node_id", &node_id, sizeof(node_id));
if (rc < 0)
{
LOG_ERR("Failed to load CAN bus node id from settings: %d", rc);
return rc;
}
LOG_DBG("Loaded CAN bus node id: %d", node_id);
}
int rc = 0;
if (!device_is_ready(can_dev))
{
@ -91,5 +162,125 @@ int canbus_init(void)
return rc;
}
#endif
rc = can_start(can_dev);
if (rc != 0)
{
printf("Error starting CAN controller [%d]", rc);
return 0;
}
LOG_DBG("CAN device %s is ready", can_dev->name);
// Initialize the CAN RX thread
canbus_rx_thread_id = k_thread_create(&canbus_rx_thread_data, canbus_rx_stack,
K_THREAD_STACK_SIZEOF(canbus_rx_stack), canbus_thread,
NULL, NULL, NULL,
CANBUS_RX_THREAD_PRIORITY, 0, K_NO_WAIT);
k_thread_name_set(canbus_rx_thread_id, "canbus_rx");
const struct can_filter filter = {
.id = node_id << 8, // Standard ID with node ID in the first byte
.mask = 0x700, // Mask to match the first byte of the ID
.flags = 0, // No special flags
};
canbus_rx_filter_id = can_add_rx_filter(can_dev, canbus_rx_callback, NULL, &filter);
LOG_DBG("CAN RX filter added for node ID %d", canbus_rx_filter_id);
return 0;
}
void canbus_tx8_callback(const struct device *dev, int error, void *user_data)
{
ARG_UNUSED(dev);
uint8_t frame_id = *(uint8_t *)user_data; // Retrieve the frame ID from user data
if (error != 0)
{
LOG_ERR("CAN transmission error. Error code: %d, Frame ID: %d", error, frame_id);
}
else
{
LOG_DBG("CAN message with Frame ID %d sent successfully", frame_id);
}
free(user_data); // Free the allocated memory for frame ID
}
int canbus_send8(uint16_t reg, uint8_t value)
{
int rc = 0;
struct can_frame frame = {
.id = (node_id << 8) | reg, // Standard ID with node ID in the first byte
.dlc = sizeof(value), // Data Length Code (DLC)
};
frame.data[0] = value; // Set the value in the first byte of the data
uint8_t *frame_id = malloc(sizeof(uint8_t)); // Allocate memory for frame ID
LOG_DBG("Preparing to send 8-bit value 0x%02x to register 0x%02x on node %d", value, reg, node_id);
if (frame_id == NULL)
{
LOG_ERR("Failed to allocate memory for frame ID");
return -ENOMEM; // Not enough memory
}
*frame_id = can_msg_id++; // Increment message ID for uniqueness
LOG_DBG("Using frame ID: %d", *frame_id);
rc = can_send(can_dev, &frame, CANBUS_TX_TIMEOUT, canbus_tx8_callback, frame_id);
// Send the CAN frame with a timeout and callback
if (rc != 0)
{
LOG_ERR("Failed to queue CAN frame: %d", rc);
free(frame_id); // Free the allocated memory for frame ID
return rc;
}
return 0;
}
void canbus_tx16_callback(const struct device *dev, int error, void *user_data)
{
ARG_UNUSED(dev);
uint8_t frame_id = *(uint8_t *)user_data; // Retrieve the frame ID from user data
if (error != 0)
{
LOG_ERR("CAN transmission error. Error code: %d, Frame ID: %d", error, frame_id);
}
else
{
LOG_DBG("CAN message with Frame ID %d sent successfully", frame_id);
}
free(user_data); // Free the allocated memory for frame ID
}
int canbus_send16(uint16_t reg, uint16_t value)
{
int rc = 0;
union data_type
{
int16_t value;
uint8_t bytes[2];
} data;
data.value = sys_cpu_to_be16(value); // Convert value to big-endian format
struct can_frame frame = {
.id = (node_id << 8) | reg, // Standard ID with node ID in the first byte
.dlc = sizeof(data), // Data Length Code (DLC)
};
memcpy(frame.data, data.bytes, sizeof(data)); // Copy data into the frame
uint8_t *frame_id = malloc(sizeof(uint8_t)); // Allocate memory for frame ID
LOG_DBG("Preparing to send 16-bit value 0x%04x to register 0x%02x on node %d", value, reg, node_id);
if (frame_id == NULL)
{
LOG_ERR("Failed to allocate memory for frame ID");
return -ENOMEM; // Not enough memory
}
*frame_id = can_msg_id++; // Increment message ID for uniqueness
LOG_DBG("Using frame ID: %d", *frame_id);
rc = can_send(can_dev, &frame, CANBUS_TX_TIMEOUT, canbus_tx16_callback, frame_id);
// Send the CAN frame with a timeout and callback
if (rc != 0)
{
LOG_ERR("Failed to queue CAN frame: %d", rc);
free(frame_id); // Free the allocated memory for frame ID
return rc;
}
LOG_DBG("Queued 16-bit value 0x%04x to register 0x%02x on node %d, frame ID: %d",
value, reg, node_id, *frame_id);
return 0;
}

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@ -1,13 +1,16 @@
#ifndef __CANBUS_H__
#define __CANBUS_H__
#include <zephyr/drivers/can.h>
#include <zephyr/kernel.h>
#include <stdint.h>
#include "canbus_registers.h"
#define RX_THREAD_STACK_SIZE 512
#define RX_THREAD_PRIORITY 2
#define CANBUS_RX_THREAD_STACK_SIZE (512) // Stack size for the CAN RX thread
#define CANBUS_RX_THREAD_PRIORITY (5) // Priority for the CAN RX thread
#define CANBUS_RX_MSGQ_SIZE (5) // Size of the message queue for CAN RX thread
#define CANBUS_TX_TIMEOUT K_MSEC(100) // Timeout for sending CAN messages in milliseconds
int canbus_init(void);
int canbus_send_message(const struct can_frame *frame);
int canbus_send8(uint16_t reg, uint8_t value);
int canbus_send16(uint16_t reg, uint16_t value);
#endif // __CANBUS_H__

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@ -0,0 +1,42 @@
#ifndef __CANBUS_REGISTERS_H__
#define __CANBUS_REGISTERS_H__
enum canbus_registers {
CANBUS_REG_REBOOT = 0x00,
CANBUS_REG_STATE = 0x01,
CANBUS_REG_ERROR = 0x02,
CANBUS_REG_VALVE_STATUS = 0x10,
CANBUS_REG_VALVE_OPERATION = 0x11,
CANBUS_REG_VALVE_COMMAND = 0x12,
CANBUS_REG_WATERLEVEL_STATE = 0x20,
CANBUS_REG_WATERLEVEL_LEVEL = 0x21,
CANBUS_REG_WATERLEVEL_ZERO_POINT = 0x22,
CANBUS_REG_WATERLEVEL_MAX_POINT = 0x23,
};
enum valve_status {
VALVE_STATE_CLOSED = 0x00,
VALVE_STATE_OPEN = 0x01,
VALVE_STATE_ERROR = 0x02,
VALVE_STATE_UNKNOWN = 0x03,
};
enum valve_operation_state {
VALVE_OPERATION_IDLE = 0x00,
VALVE_OPERATION_OPENING = 0x01,
VALVE_OPERATION_CLOSING = 0x02,
};
enum valve_command {
VALVE_COMMAND_STOP = 0x00,
VALVE_COMMAND_OPEN = 0x01,
VALVE_COMMAND_CLOSE = 0x02,
};
enum waterlevel_state {
WATERLEVEL_STATE_OK = 0x00,
WATERLEVEL_STATE_MODBUS_ERROR = 0x02,
};
#endif // __CANBUS_REGISTERS_H__

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@ -1,163 +0,0 @@
#include "modbus.h"
#include <zephyr/kernel.h>
#include <zephyr/sys/util.h>
#include <zephyr/modbus/modbus.h>
#include <zephyr/logging/log.h>
LOG_MODULE_REGISTER(mbc, CONFIG_LOG_DEFAULT_LEVEL);
#define MODBUS_NODE DT_COMPAT_GET_ANY_STATUS_OKAY(zephyr_modbus_serial)
static int client_iface;
static struct
{
int level; // Water level value
int minimum; // Minimum value
int maximum; // Maximum value
int factor; // Factor for unit conversion
} measurement;
int mb_init_client(void)
{
const char iface_name[] = {DEVICE_DT_NAME(MODBUS_NODE)};
client_iface = modbus_iface_get_by_name(iface_name);
LOG_DBG("Modbus client interface: %d", client_iface);
if (client_iface < 0)
{
LOG_ERR("Failed to get Modbus interface by name: %s", iface_name);
return client_iface;
}
return modbus_init_client(client_iface, client_param);
}
int mb_read_holding_registers(int node, uint16_t reg_addr, uint16_t *data, size_t len)
{
return modbus_read_holding_regs(client_iface, node, reg_addr, data, len);
}
int mb_read()
{
int rc;
int16_t data[5] = {0};
rc = mb_read_holding_registers(1, 0x0002, data, sizeof(data) / sizeof(data[0]));
if (rc < 0)
{
LOG_ERR("Failed to read holding registers: %d", rc);
return rc;
}
LOG_HEXDUMP_DBG(data, sizeof(data), "Holding Registers Data");
int unit, decimals;
unit = data[0];
decimals = data[1];
int factor;
switch (unit)
{
case 1: // cm
factor = 10;
break;
case 2: // mm
factor = 1;
break;
default:
LOG_ERR("Unknown unit: %d", unit);
return -EINVAL;
}
switch(decimals)
{
case 0: // no decimals
factor /= 1;
break;
case 1: // one decimal
factor /= 10;
break;
case 2: // two decimals
factor /= 100;
break;
default:
LOG_ERR("Unknown decimals: %d", decimals);
return -EINVAL;
}
measurement.factor = factor;
measurement.level = data[2] * factor;
measurement.minimum = data[3] * factor;
measurement.maximum = data[4] * factor;
LOG_DBG("Water level: %dmm, Minimum: %dmm, Maximum: %dmm",
measurement.level, measurement.minimum, measurement.maximum);
return 0;
}
int mb_read_water_level(double *mb_read_water_level)
{
int rc = mb_read();
if (rc < 0)
{
LOG_ERR("Failed to read water level: %d", rc);
return rc;
}
*mb_read_water_level = (double)measurement.level / 1000.0; // Convert to meters
return 0;
}
int mb_read_water_level_mm(int *mb_read_water_level)
{
int rc = mb_read();
if (rc < 0)
{
LOG_ERR("Failed to read water level: %d", rc);
return rc;
}
*mb_read_water_level = measurement.level;
return 0;
}
int mb_read_minimum_mm(int *mb_read_minimum)
{
int rc = mb_read();
if (rc < 0)
{
LOG_ERR("Failed to read water level: %d", rc);
return rc;
}
*mb_read_minimum = measurement.minimum;
return 0;
}
int mb_read_maximum_mm(int *mb_read_maximum)
{
int rc = mb_read();
if (rc < 0)
{
LOG_ERR("Failed to read water level: %d", rc);
return rc;
}
*mb_read_maximum = measurement.maximum;
return 0;
}
int mb_write_minimum_mm(int minimum)
{
int rc = mb_read();
if (rc < 0)
{
LOG_ERR("Failed to read water level: %d", rc);
return rc;
}
modbus_write_holding_reg(client_iface, 1, 0x0005, minimum / measurement.factor);
return 0;
}
int mb_write_maximum_mm(int maximum)
{
int rc = mb_read();
if (rc < 0)
{
LOG_ERR("Failed to read water level: %d", rc);
return rc;
}
modbus_write_holding_reg(client_iface, 1, 0x0006, maximum / measurement.factor);
return 0;
}

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@ -1,24 +0,0 @@
#ifndef __waterlevel_h
#define __waterlevel_h
#include <zephyr/modbus/modbus.h>
const static struct modbus_iface_param client_param = {
.mode = MODBUS_MODE_RTU,
.rx_timeout = 50000,
.serial = {
.baud = 9600,
.parity = UART_CFG_PARITY_NONE,
},
};
int mb_init_client(void);
int mb_read_holding_registers(int node, uint16_t reg_addr, uint16_t *data, size_t len);
int mb_read_water_level(double *mb_read_water_level);
int mb_read_water_level_mm(int *mb_read_water_level_mm);
int mb_read_minimum_mm(int *mb_read_minimum);
int mb_read_maximum_mm(int *mb_read_maximum);
int mb_write_minimum_mm(int minimum);
int mb_write_maximum_mm(int maximum);
#endif

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@ -1,17 +0,0 @@
#ifndef __SETTINGS_H__
#define __SETTINGS_H__
#include <zephyr/settings/settings.h>
#include <errno.h>
#include <zephyr/sys/printk.h>
#if defined(CONFIG_SETTINGS_FILE)
#include <zephyr/fs/fs.h>
#include <zephyr/fs/littlefs.h>
#endif
#define STORAGE_PARTITION storage_partition
#define STORAGE_PARTITION_ID FIXED_PARTITION_ID(STORAGE_PARTITION)
#endif // __SETTINGS_H__

163
software/lib/valve.c Normal file
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#include <zephyr/kernel.h>
#include <zephyr/logging/log.h>
#include "canbus.h"
#include "canbus_registers.h"
#include "valve.h"
LOG_MODULE_REGISTER(valve, CONFIG_LOG_VALVE_LEVEL);
K_THREAD_STACK_DEFINE(valve_thread_stack, VALVE_THREAD_STACK_SIZE);
K_MSGQ_DEFINE(valve_msgq, sizeof(int), VALVE_MSGQ_SIZE, 4);
k_tid_t valve_thread_id;
struct k_thread valve_thread_data;
valve_status_t valve_status_data = {
.valve_state = VALVE_STATE_UNKNOWN,
.valve_operation = VALVE_OPERATION_IDLE,
};
int valve_start_thread(void)
{
int rc;
// Initialize the valve
rc = valve_init();
if (rc < 0)
{
LOG_ERR("Failed to initialize valve: %d", rc);
return rc;
}
// Create the valve thread
valve_thread_id = k_thread_create(&valve_thread_data, valve_thread_stack,
K_THREAD_STACK_SIZEOF(valve_thread_stack),
(k_thread_entry_t)valve_cmd, NULL, NULL, NULL,
VALVE_THREAD_PRIORITY, 0, K_NO_WAIT);
k_thread_name_set(valve_thread_id, "valve");
LOG_INF("Valve thread started successfully");
while (1)
{
// Wait for commands from the message queue
int cmd;
rc = k_msgq_get(&valve_msgq, &cmd, VALVE_STATE_INTERVAL);
if (rc == 0)
{
// Process the command
rc = valve_cmd(cmd);
if (rc < 0)
{
LOG_ERR("Failed to process valve command: %d", rc);
}
}
else
{
valve_send_status(); // Send current valve status periodically
}
}
return 0;
}
int valve_init(void)
{
return 0;
}
int valve_cmd(int cmd)
{
switch (cmd)
{
case VALVE_COMMAND_OPEN:
if (valve_status_data.valve_state != VALVE_STATE_OPEN)
{
valve_status_data.valve_state = VALVE_STATE_OPEN;
valve_status_data.valve_operation = VALVE_OPERATION_OPENING;
valve_send_status(); // Send updated status before opening
valve_send_operation(); // Send updated operation state before opening
k_sleep(VALVE_OPENING_TIME); // Simulate opening time
valve_status_data.valve_operation = VALVE_OPERATION_IDLE; // Set operation to idle after opening
valve_send_status(); // Send updated status after opening
valve_send_operation(); // Send updated operation state after opening
}
break;
case VALVE_COMMAND_CLOSE:
if (valve_status_data.valve_state != VALVE_STATE_CLOSED)
{
valve_status_data.valve_operation = VALVE_OPERATION_CLOSING;
valve_send_operation(); // Send updated operation state before closing
k_sleep(VALVE_CLOSING_TIME); // Simulate closing time
valve_status_data.valve_state = VALVE_STATE_CLOSED; // Set valve state to closed after closing
valve_status_data.valve_operation = VALVE_OPERATION_IDLE; // Set operation to idle after closing
valve_send_status(); // Send updated status after closing
valve_send_operation(); // Send updated operation state after closing
}
break;
case VALVE_COMMAND_STOP:
valve_status_data.valve_operation = VALVE_OPERATION_IDLE;
break;
default:
LOG_ERR("Unknown valve command: %d", cmd);
return -EINVAL; // Invalid command
}
return 0;
}
int valve_send_status(void)
{
int rc = canbus_send8(CANBUS_REG_VALVE_STATUS, valve_status_data.valve_state);
if (rc != 0)
{
LOG_ERR("Failed to send valve status: %d", rc);
return rc;
}
char *state_str;
switch (valve_status_data.valve_state)
{
case VALVE_STATE_CLOSED:
state_str = "CLOSED";
break;
case VALVE_STATE_OPEN:
state_str = "OPEN";
break;
case VALVE_STATE_ERROR:
state_str = "ERROR";
break;
case VALVE_STATE_UNKNOWN:
state_str = "UNKNOWN";
break;
default:
state_str = "INVALID";
break;
}
LOG_INF("Valve status sent: %s", state_str);
return 0;
}
int valve_send_operation(void)
{
int rc = canbus_send8(CANBUS_REG_VALVE_OPERATION, valve_status_data.valve_operation);
if (rc != 0)
{
LOG_ERR("Failed to send valve operation: %d", rc);
return rc;
}
char *operation_str;
switch (valve_status_data.valve_operation)
{
case VALVE_OPERATION_IDLE:
operation_str = "IDLE";
break;
case VALVE_OPERATION_OPENING:
operation_str = "OPENING";
break;
case VALVE_OPERATION_CLOSING:
operation_str = "CLOSING";
break;
default:
operation_str = "UNKNOWN";
break;
}
LOG_INF("Valve operation sent: %s", operation_str);
return 0;
}

27
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#ifndef __VALVE_H__
#define __VALVE_H__
#define VALVE_OPENING_TIME K_MSEC(4500) // Time to open the valve
#define VALVE_CLOSING_TIME K_MSEC(4500) // Time to close the valve
#define VALVE_MAX_OPENING_TIME K_MSEC(5000) // Maximum time to open the valve
#define VALVE_MAX_CLOSING_TIME K_MSEC(5000) // Maximum time to close the valve
#define VALVE_STATE_INTERVAL K_SECONDS(5 * 60) // Interval to check the valve state
#define VALVE_THREAD_STACK_SIZE (512) // Stack size for the valve thread
#define VALVE_THREAD_PRIORITY (2) // Priority for the valve thread
#define VALVE_MSGQ_SIZE (5) // Size of the message queue for valve operations
#include <stdint.h>
#include "canbus_registers.h"
typedef struct {
uint8_t valve_state;
uint8_t valve_operation;
} valve_status_t;
int valve_init(void);
int valve_cmd(int cmd);
int valve_send_status(void);
int valve_send_operation(void);
#endif // __VALVE_H__

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#include "waterlevel_sensor.h"
#include <zephyr/kernel.h>
#include <zephyr/logging/log.h>
#include <zephyr/modbus/modbus.h>
#include <stdlib.h>
#include "canbus.h"
LOG_MODULE_REGISTER(wls, CONFIG_LOG_WATERLEVELSENSOR_LEVEL);
#define MODBUS_NODE DT_COMPAT_GET_ANY_STATUS_OKAY(zephyr_modbus_serial)
struct k_thread waterlevel_sensor_thread_data;
K_THREAD_STACK_DEFINE(waterlevel_sensor_stack, WATERLEVEL_SENSOR_STACK_SIZE);
K_MSGQ_DEFINE(waterlevel_sensor_msgq, sizeof(waterlevel_command_t), WATERLEVEL_MESSAGE_QUEUE_SIZE, 4);
static int modbus_client_iface;
volatile static struct
{
int level; // Water level value
int zeropoint; // Minimum value
int maxpoint; // Maximum value
int factor; // Factor for unit conversion
bool factor_set; // Flag to indicate if factor is set
} waterlevel_measurement = {
.factor_set = false,
};
struct modbus_iface_param client_param = {
.mode = MODBUS_MODE_RTU,
.rx_timeout = 50000, // Timeout for receiving data in milliseconds
.serial = {
.baud = 9600,
.parity = UART_CFG_PARITY_NONE,
.stop_bits_client = UART_CFG_STOP_BITS_1, // 1 stop bit for Modbus RTU
},
};
static int waterlevel_modbus_init() {
const char iface_name[] = {DEVICE_DT_NAME(MODBUS_NODE)};
modbus_client_iface = modbus_iface_get_by_name(iface_name);
if (modbus_client_iface < 0)
{
LOG_ERR("Failed to get Modbus interface by name: %s", iface_name);
return modbus_client_iface;
}
LOG_DBG("Initializing modbus client interface: %s", iface_name);
return modbus_init_client(modbus_client_iface, client_param);
}
static int waterlevel_modbus_read(void) {
int rc;
union
{
struct
{
int16_t unit; // Unit of measurement (e.g., cm, mm)
int16_t decimals; // Number of decimal places for the measurement
int16_t level; // Water level value
int16_t zeropoint; // Zero point for the measurement
int16_t maxpoint; // Maximum point for the measurement
};
int16_t data[5]; // Data array for holding registers
} waterlevel_modbus_data;
rc = modbus_read_holding_regs(modbus_client_iface, WATERLEVEL_SENSOR_MODBUS_NODE_ID, 0x0002, waterlevel_modbus_data.data, sizeof(waterlevel_modbus_data.data) / sizeof(waterlevel_modbus_data.data[0]));
if (rc < 0)
{
LOG_ERR("Failed to read holding registers, node <%d>, returncode: %d", WATERLEVEL_SENSOR_MODBUS_NODE_ID, rc);
return rc;
}
LOG_DBG("Got values. Unit: %d, Decimals: %d, Level: %d, Zero Point: %d, Max Point: %d",
waterlevel_modbus_data.unit,
waterlevel_modbus_data.decimals,
waterlevel_modbus_data.level,
waterlevel_modbus_data.zeropoint,
waterlevel_modbus_data.maxpoint);
LOG_HEXDUMP_DBG(waterlevel_modbus_data.data, sizeof(waterlevel_modbus_data.data), "Waterlevel Sensor Holding Registers Data");
switch (waterlevel_modbus_data.unit)
{
case 1: // cm
waterlevel_measurement.factor = 10;
break;
case 2: // mm
waterlevel_measurement.factor = 1;
break;
default:
LOG_ERR("Unknown unit: %d", waterlevel_modbus_data.unit);
waterlevel_measurement.factor_set = false;
return -EINVAL;
}
switch (waterlevel_modbus_data.decimals)
{
case 0: // no decimals
waterlevel_measurement.factor /= 1;
break;
case 1: // one decimal
waterlevel_measurement.factor /= 10;
break;
case 2: // two decimals
waterlevel_measurement.factor /= 100;
break;
default:
LOG_ERR("Unknown decimals: %d", waterlevel_modbus_data.decimals);
waterlevel_measurement.factor_set = false;
return -EINVAL;
}
waterlevel_measurement.factor_set = true;
waterlevel_measurement.level = waterlevel_modbus_data.level * waterlevel_measurement.factor;
waterlevel_measurement.zeropoint = waterlevel_modbus_data.zeropoint * waterlevel_measurement.factor;
waterlevel_measurement.maxpoint = waterlevel_modbus_data.maxpoint * waterlevel_measurement.factor;
LOG_DBG("Water level: %dmm, zero point: %dmm, maximum point: %dmm",
waterlevel_measurement.level,
waterlevel_measurement.zeropoint,
waterlevel_measurement.maxpoint);
LOG_HEXDUMP_DBG(waterlevel_modbus_data.data, sizeof(waterlevel_modbus_data.data), "Waterlevel Sensor Holding Registers Data");
return 0;
}
static int waterlevel_send_level(void) {
if (!waterlevel_measurement.factor_set) {
LOG_ERR("Factor not set, cannot send water level");
return -EINVAL;
}
LOG_INF("Sending water level: %dmm", waterlevel_measurement.level);
canbus_send16(CANBUS_REG_WATERLEVEL_LEVEL, waterlevel_measurement.level);
return 0;
}
static int waterlevel_send_zero_point(void) {
if (!waterlevel_measurement.factor_set) {
LOG_ERR("Factor not set, cannot send zero point");
return -EINVAL;
}
LOG_INF("Sending water zero point: %dmm", waterlevel_measurement.zeropoint);
canbus_send16(CANBUS_REG_WATERLEVEL_ZERO_POINT, waterlevel_measurement.zeropoint);
return 0;
}
static int waterlevel_send_max_point(void) {
if (!waterlevel_measurement.factor_set) {
LOG_ERR("Factor not set, cannot send maximum point");
return -EINVAL;
}
LOG_INF("Sending water maximum point: %dmm", waterlevel_measurement.maxpoint);
canbus_send16(CANBUS_REG_WATERLEVEL_MAX_POINT, waterlevel_measurement.maxpoint);
return 0;
}
static int waterlevel_set_zero_point(int zeropoint) {
if (!waterlevel_measurement.factor_set) {
LOG_ERR("Factor not set, cannot set zero point");
return -EINVAL;
}
int16_t zeropoint_modbus = zeropoint / waterlevel_measurement.factor;
int rc = modbus_write_holding_regs(modbus_client_iface, WATERLEVEL_SENSOR_MODBUS_NODE_ID, 0x0005, &zeropoint_modbus, 1);
if (rc < 0) {
LOG_ERR("Failed to write zero point: %d", rc);
return rc;
}
waterlevel_measurement.zeropoint = zeropoint; // Update the local measurement structure
LOG_INF("Zero point set to: %dmm", waterlevel_measurement.zeropoint);
rc = waterlevel_send_zero_point();
if (rc < 0) {
LOG_ERR("Failed to send zero point: %d", rc);
return rc;
}
return 0;
}
static int waterlevel_set_max_point(int maxpoint) {
if (!waterlevel_measurement.factor_set) {
LOG_ERR("Factor not set, cannot set maximum point");
return -EINVAL;
}
int16_t maxpoint_modbus = maxpoint / waterlevel_measurement.factor;
int rc = modbus_write_holding_regs(modbus_client_iface, WATERLEVEL_SENSOR_MODBUS_NODE_ID, 0x0006, &maxpoint_modbus, 1);
if (rc < 0) {
LOG_ERR("Failed to write maximum point: %d", rc);
return rc;
}
waterlevel_measurement.maxpoint = maxpoint; // Update the local measurement structure
LOG_INF("Maximum point set to: %dmm", waterlevel_measurement.maxpoint);
rc = waterlevel_send_max_point();
if (rc < 0) {
LOG_ERR("Failed to send maximum point: %d", rc);
return rc;
}
return 0;
}
void waterlevel_sensor_thread(void *arg1, void *arg2, void *arg3)
{
ARG_UNUSED(arg1);
ARG_UNUSED(arg2);
ARG_UNUSED(arg3);
// Initialize the Modbus client
int rc = waterlevel_modbus_init();
if (rc < 0)
{
LOG_ERR("Failed to initialize Modbus client: %d", rc);
return;
}
rc = waterlevel_modbus_read();
if (rc < 0) {
LOG_ERR("Failed to read initial water level: %d", rc);
return;
}
waterlevel_send_level();
waterlevel_send_zero_point();
waterlevel_send_max_point();
// Initialize the last transmission time and level
// Use k_uptime_get_32() to get the current uptime in milliseconds
// and store the initial water level measurement.
// This will be used to determine when to send updates.
uint32_t last_transmission_time_ms = k_uptime_get_32();
int32_t last_transmission_level = waterlevel_measurement.level;
while (1)
{
uint32_t current_time_ms = k_uptime_get_32();
uint32_t delta_time = current_time_ms-last_transmission_time_ms;
waterlevel_command_t command;
rc = waterlevel_modbus_read();
if (rc < 0)
{
LOG_ERR("Failed to read water level: %d", rc);
continue;
}
if (delta_time >= WATERLEVEL_SENSOR_MAX_UPDATE_INTERVAL_MS ||
abs(waterlevel_measurement.level - last_transmission_level) >= WATERLEVEL_SENSOR_MIN_DELTA) {
rc = waterlevel_send_level();
if (rc < 0) {
LOG_ERR("Failed to send water level: %d", rc);
} else {
last_transmission_time_ms = current_time_ms;
last_transmission_level = waterlevel_measurement.level;
}
}
while (k_msgq_get(&waterlevel_sensor_msgq, &command, K_NO_WAIT) == 0)
{
switch(command.cmd)
{
case WATERLEVEL_CMD_SET:
switch (command.reg)
{
case CANBUS_REG_WATERLEVEL_ZERO_POINT: // Set zero point
rc = waterlevel_set_zero_point(command.data);
if (rc < 0) {
LOG_ERR("Failed to set zero point: %d", rc);
}
break;
case CANBUS_REG_WATERLEVEL_MAX_POINT: // Set maximum point
rc = waterlevel_set_max_point(command.data);
if (rc < 0) {
LOG_ERR("Failed to set maximum point: %d", rc);
}
break;
default:
LOG_ERR("Unknown register for SET command: 0x%02X", command.reg);
break;
}
break;
case WATERLEVEL_CMD_GET:
switch (command.reg)
{
case CANBUS_REG_WATERLEVEL_LEVEL: // Get water level
waterlevel_send_level();
break;
case CANBUS_REG_WATERLEVEL_ZERO_POINT: // Get zero point
waterlevel_send_zero_point();
break;
case CANBUS_REG_WATERLEVEL_MAX_POINT: // Get maximum point
waterlevel_send_max_point();
break;
default:
LOG_ERR("Unknown register for GET command: 0x%02X", command.reg);
break;
}
break;
default:
LOG_ERR("Unknown command type: %d", command.cmd);
break;
}
}
}
}
int waterlevel_sensor_start_thread(void)
{
k_tid_t waterlevel_sensor_thread_id;
// Start the thread
waterlevel_sensor_thread_id = k_thread_create(&waterlevel_sensor_thread_data, waterlevel_sensor_stack,
K_THREAD_STACK_SIZEOF(waterlevel_sensor_stack), waterlevel_sensor_thread,
NULL, NULL, NULL,
WATERLEVEL_SENSOR_THREAD_PRIORITY, 0, K_NO_WAIT);
if (waterlevel_sensor_thread_id == NULL)
{
LOG_ERR("Failed to create water level sensor thread");
return -ENOMEM;
}
k_thread_name_set(waterlevel_sensor_thread_id, "waterlevel_sensor");
LOG_INF("Water level sensor thread started successfully");
return 0;
}
#ifdef CONFIG_SHELL
#include <zephyr/shell/shell.h>
void waterlevel_set_zero_point_shell(const struct shell *shell, size_t argc, char **argv) {
if (argc != 2) {
shell_error(shell, "Usage: waterlevel_sensor set_zero_point <zeropoint>");
return;
}
int zeropoint = atoi(argv[1]);
int rc = waterlevel_set_zero_point(zeropoint);
if (rc < 0) {
shell_error(shell, "Failed to set zero point: %d", rc);
} else {
shell_print(shell, "Zero point set to: %dmm", zeropoint);
}
}
void waterlevel_set_max_point_shell(const struct shell *shell, size_t argc, char **argv) {
if (argc != 2) {
shell_error(shell, "Usage: waterlevel_sensor set_max_point <maxpoint>");
return;
}
int maxpoint = atoi(argv[1]);
int rc = waterlevel_set_max_point(maxpoint);
if (rc < 0) {
shell_error(shell, "Failed to set maximum point: %d", rc);
} else {
shell_print(shell, "Maximum point set to: %dmm", maxpoint);
}
}
void waterlevel_sensor_print_shell(const struct shell *shell, size_t argc, char **argv) {
ARG_UNUSED(argc);
ARG_UNUSED(argv);
waterlevel_modbus_read();
if (!waterlevel_measurement.factor_set) {
shell_error(shell, "Factor not set, cannot print water level");
return;
}
shell_print(shell, "Current water level: %4dmm", waterlevel_measurement.level);
shell_print(shell, "Zero point: %4dmm", waterlevel_measurement.zeropoint);
shell_print(shell, "Maximum point: %4dmm", waterlevel_measurement.maxpoint);
}
// Define the shell commands for the water level sensor
SHELL_STATIC_SUBCMD_SET_CREATE(
waterlevel_sensor_cmds,
SHELL_CMD(print, NULL, "Print the current water level, zero point, and maximum point", waterlevel_sensor_print_shell),
SHELL_CMD(setzero, NULL, "Set the zero point for the water level sensor", waterlevel_set_zero_point_shell),
SHELL_CMD(setmax, NULL, "Set the maximum point for the water level sensor", waterlevel_set_max_point_shell),
SHELL_SUBCMD_SET_END);
SHELL_CMD_REGISTER(wls, &waterlevel_sensor_cmds, "Water level sensor commands", NULL);
#endif // CONFIG_SHELL

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#ifndef __WATERLEVEL_SENSOR_H__
#define __WATERLEVEL_SENSOR_H__
#define WATERLEVEL_SENSOR_STACK_SIZE (512)
#define WATERLEVEL_SENSOR_THREAD_PRIORITY (2)
#define WATERLEVEL_MESSAGE_QUEUE_SIZE (5) // Size of the message queue for water level sensor thread
#define WATERLEVEL_SENSOR_READ_INTERVAL_MS (5000) // Interval for reading the water level sensor in milliseconds
#define WATERLEVEL_SENSOR_MIN_DELTA (2) // Minimum change in water level to trigger an update
#define WATERLEVEL_SENSOR_MAX_UPDATE_INTERVAL_MS (600000) // Maximum interval for updating the water level in milliseconds
#define WATERLEVEL_SENSOR_MODBUS_NODE_ID (0x01) // Modbus node ID for the water level sensor
#define WATERLEVEL_SENSOR_MODBUS_BAUD_RATE (9600) // Baud rate for Modbus communication
#include <inttypes.h>
int waterlevel_sensor_start_thread(void);
typedef struct {
uint8_t reg;
enum {
WATERLEVEL_CMD_SET,
WATERLEVEL_CMD_GET,
} cmd;
int16_t data; // Data to be set
} waterlevel_command_t;
#endif // __WATERLEVEL_SENSOR_H__

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software/prj.conf Normal file
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CONFIG_HAS_MODBUS_WATERLEVEL_SENSOR=y
CONFIG_HAS_VALVE=y
CONFIG_LOG=y
CONFIG_LOG_DEFAULT_LEVEL=3
# CONFIG_LOG_CAN_LEVEL=4
# CONFIG_LOG_WATERLEVELSENSOR_LEVEL=4
# CONFIG_LOG_VALVE_LEVEL=4
CONFIG_CBPRINTF_FP_SUPPORT=y
CONFIG_UART_CONSOLE=y # Console on USART1
# CAN loopback mode for testing
#CONFIG_LOOPBACK_MODE=y
CONFIG_SHELL=y
CONFIG_CAN_SHELL=y
CONFIG_GPIO_SHELL=y
CONFIG_REBOOT=y

53
software/src/main.c Normal file
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#include <zephyr/logging/log.h>
#include <zephyr/kernel.h>
#include <zephyr/sys/byteorder.h>
#include <zephyr/shell/shell.h>
#include "canbus.h"
#include "canbus_registers.h"
#ifdef CONFIG_HAS_MODBUS_WATERLEVEL_SENSOR
// Include the water level sensor header file when the feature is enabled
#include "waterlevel_sensor.h"
#endif // CONFIG_HAS_MODBUS_WATERLEVEL_SENSOR
#ifdef CONFIG_HAS_VALVE
#include "valve.h"
#endif // CONFIG_HAS_VALVE
LOG_MODULE_REGISTER(main, CONFIG_LOG_DEFAULT_LEVEL);
int main(void)
{
LOG_INF("Starting main application...");
canbus_init();
k_sleep(K_MSEC(3000)); // Allow some time for CAN initialization
#ifdef CONFIG_HAS_MODBUS_WATERLEVEL_SENSOR
int rc = waterlevel_sensor_start_thread();
if (rc < 0)
{
LOG_ERR("Failed to start water level sensor thread: %d", rc);
return rc;
}
#endif // CONFIG_HAS_MODBUS_WATERLEVEL_SENSOR
valve_cmd(VALVE_COMMAND_CLOSE); // Ensure the valve is closed at startup
LOG_INF("Main application started successfully.");
return 0; // Return 0 on success
}
#ifdef CONFIG_SHELL
#include <zephyr/shell/shell.h>
#include <zephyr/sys/reboot.h>
static int reboot_shell_cmd(const struct shell *shell, size_t argc, char **argv)
{
ARG_UNUSED(argc);
ARG_UNUSED(argv);
shell_print(shell, "Rebooting the node in 1 second...");
k_sleep(K_SECONDS(1));
sys_reboot(SYS_REBOOT_COLD);
return 0;
}
SHELL_CMD_REGISTER(reboot, NULL, "Reboot the node", reboot_shell_cmd);
#endif // CONFIG_SHELL

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build

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{
"configurations": [
{
"name": "Win32",
"includePath": [
"${workspaceFolder}/**"
],
"defines": [
"_DEBUG",
"UNICODE",
"_UNICODE"
]
}
],
"version": 4
}

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# SPDX-License-Identifier: Apache-2.0
cmake_minimum_required(VERSION 3.20.0)
list(APPEND BOARD_ROOT ${CMAKE_CURRENT_SOURCE_DIR}/..)
find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
project(hello_world)
target_sources(app PRIVATE src/main.c)
target_sources(app PRIVATE ../lib/canbus.c)
target_include_directories(app PRIVATE
${CMAKE_CURRENT_SOURCE_DIR}/../lib
)

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&usart1 {
status = "okay";
current-speed = <9600>;
modbus0 {
compatible = "zephyr,modbus-serial";
status = "okay";
// de-gpios = <&arduino_header 15 GPIO_ACTIVE_LOW>; /* D9 */
};
};

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CONFIG_LOG=y
CONFIG_LOG_DEFAULT_LEVEL=3
CONFIG_CBPRINTF_FP_SUPPORT=y
CONFIG_UART_CONSOLE=y # Console on USART1
#CONFIG_RTT_CONSOLE=y
#CONFIG_USE_SEGGER_RTT=y
CONFIG_LOOPBACK_MODE=y
CONFIG_LOG_CAN_LEVEL=4

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/* Testing MODBUS functionality
This code initializes a Modbus client, sets the zero point and the 2m point for water level,
and reads the water level in both meters and millimeters.
It uses the Zephyr RTOS and its Modbus library to communicate with a Modbus server.
*/
#include <zephyr/logging/log.h>
#include <zephyr/kernel.h>
#include <zephyr/drivers/gpio.h>
#include "canbus.h"
LOG_MODULE_REGISTER(main, CONFIG_LOG_DEFAULT_LEVEL);
int main(void)
{
int rc;
rc = canbus_init();
if (rc != 0)
{
LOG_ERR("Failed to initialize CAN bus: %d", rc);
return rc;
}
LOG_INF("CAN bus initialized successfully");
return 0;
}

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build

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{
"configurations": [
{
"name": "Win32",
"includePath": [
"${workspaceFolder}/**"
],
"defines": [
"_DEBUG",
"UNICODE",
"_UNICODE"
]
}
],
"version": 4
}

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# SPDX-License-Identifier: Apache-2.0
cmake_minimum_required(VERSION 3.20.0)
list(APPEND BOARD_ROOT ${CMAKE_CURRENT_SOURCE_DIR}/..)
find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
project(hello_world)
target_sources(app PRIVATE src/main.c)
target_sources(app PRIVATE ../lib/modbus.c)
target_include_directories(app PRIVATE
${CMAKE_CURRENT_SOURCE_DIR}/../lib
)

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&usart1 {
status = "okay";
current-speed = <9600>;
modbus0 {
compatible = "zephyr,modbus-serial";
status = "okay";
// de-gpios = <&arduino_header 15 GPIO_ACTIVE_LOW>; /* D9 */
};
};

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CONFIG_LOG=y
CONFIG_LOG_DEFAULT_LEVEL=3
CONFIG_CBPRINTF_FP_SUPPORT=y
CONFIG_UART_CONSOLE=y # Console on USART1
#CONFIG_RTT_CONSOLE=y
#CONFIG_USE_SEGGER_RTT=y

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/* Testing MODBUS functionality
This code initializes a Modbus client, sets the zero point and the 2m point for water level,
and reads the water level in both meters and millimeters.
It uses the Zephyr RTOS and its Modbus library to communicate with a Modbus server.
*/
#include <zephyr/logging/log.h>
#include <zephyr/kernel.h>
#include <zephyr/drivers/gpio.h>
#include "modbus.h"
LOG_MODULE_REGISTER(main, CONFIG_LOG_DEFAULT_LEVEL);
/* 1000 msec = 1 sec */
#define SLEEP_TIME_MS 1000
int main(void)
{
int rc;
rc = mb_init_client();
if (rc != 0)
{
LOG_ERR("Failed to initialize Modbus client: %d", rc);
return rc;
}
LOG_INF("Modbus client initialized successfully");
double water_level = 0.0;
int water_level_mm, water_level_min_mm, water_level_max_mm = 0;
rc = mb_write_minimum_mm(42); // Set the zero point for water level
if (rc < 0)
{
LOG_ERR("Failed to write minimum water level: %d", rc);
return rc;
}
rc = mb_write_maximum_mm(2000); // Set the 2m point for water level
if (rc < 0)
{
LOG_ERR("Failed to write maximum water level: %d", rc);
return rc;
}
rc = mb_read_minimum_mm(&water_level_min_mm);
if (rc < 0)
{
LOG_ERR("Failed to read minimum water level: %d", rc);
return rc;
}
rc = mb_read_maximum_mm(&water_level_max_mm);
if (rc < 0)
{
LOG_ERR("Failed to read maximum water level: %d", rc);
return rc;
}
LOG_INF("Water zero point is set to: %dmm", water_level_min_mm);
LOG_INF("Water 2m point is set to: %dmm", water_level_max_mm);
/* Read water level */
rc = mb_read_water_level(&water_level);
if (rc < 0)
{
LOG_ERR("Failed to read water level: %d", rc);
return rc;
}
rc = mb_read_water_level_mm(&water_level_mm);
if (rc < 0)
{
LOG_ERR("Failed to read water level: %d", rc);
return rc;
}
LOG_INF("Water level: %.3fm", water_level);
LOG_INF("Water level: %dmm", water_level_mm);
LOG_INF("Modbus test completed successfully");
return 0;
}

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{
"folders": [
{
"path": "."
}
],
"settings": {
// Hush CMake
"cmake.configureOnOpen": false,
// IntelliSense
"C_Cpp.default.compilerPath": "${userHome}/zephyr-sdk-0.17.1/arm-zephyr-eabi/bin/arm-zephyr-eabi-gcc",
"C_Cpp.default.compileCommands": "${workspaceFolder}/build/compile_commands.json",
// File Associations
"files.associations": {
"waterlevel_sensor.h": "c",
"shell.h": "c",
"can.h": "c"
}
},
"tasks": {
"version": "2.0.0",
"tasks": [
{
"label": "West Build",
"type": "shell",
"group": {
"kind": "build",
"isDefault": true
},
"command": "${userHome}/zephyrproject/.venv/bin/west",
"args": [
"build",
"-p",
"auto",
"-b",
"valve_node"
],
"problemMatcher": [
"$gcc"
],
},
{
"label": "West Configurable Build",
"type": "shell",
"group": {
"kind": "build",
},
"command": "${userHome}/zephyrproject/.venv/bin/west",
"args": [
"build",
"-p",
"${input:pristine}",
"-b",
"${input:board}"
],
"problemMatcher": [
"$gcc"
]
},
{
"label": "West Flash",
"type": "shell",
"command": "${userHome}/zephyrproject/.venv/bin/west",
"args": [
"flash"
],
"problemMatcher": [
"$gcc"
]
}
],
"inputs": [
{
"id": "board",
"type": "promptString",
"default": "vave_node",
"description": "See https://docs.zephyrproject.org/latest/boards/index.html"
},
{
"id": "pristine",
"type": "pickString",
"description": "Choose when to run a pristine build",
"default": "auto",
"options": [
"auto",
"always",
"never"
]
}
]
},
"launch": {
"version": "0.2.0",
"configurations": [
{
"name": "Launch",
"device": "STM32F103RB",
"cwd": "${workspaceFolder}",
"executable": "build/zephyr/zephyr.elf",
"request": "launch",
"type": "cortex-debug",
//"runToEntryPoint": "main",
"servertype": "jlink",
"gdbPath": "${userHome}/zephyr-sdk-0.17.1/arm-zephyr-eabi/bin/arm-zephyr-eabi-gdb",
"preLaunchTask": "West Build"
},
{
"name": "Attach",
"device": "STM32F103RB",
"cwd": "${workspaceFolder}",
"executable": "build/zephyr/zephyr.elf",
"request": "attach",
"type": "cortex-debug",
//"runToEntryPoint": "main",
"servertype": "jlink",
"gdbPath": "${userHome}/zephyr-sdk-0.17.1/arm-zephyr-eabi/bin/arm-zephyr-eabi-gdb"
},
]
},
"extensions": {
"recommendations": [
"ms-vscode.cpptools-extension-pack",
"ms-python.python",
"ms-vscode.vscode-embedded-tools",
"ms-vscode.vscode-serial-monitor",
"marus25.cortex-debug",
"donjayamanne.python-environment-manager"
]
}
}