feat(app): Add CAN node application

This commit introduces a new CAN node application for the irrigation system.

The application initializes the settings subsystem and the valve system. It is intended to be used on a CAN bus to control a valve.
Signed-off-by: Eduard Iten <eduard@iten.pro>
This commit is contained in:
Eduard Iten 2025-07-22 10:54:21 +02:00
parent 9325fa20c8
commit d92a1d9533
14 changed files with 346 additions and 0 deletions

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cmake_minimum_required(VERSION 3.20)
find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})
project(can_node LANGUAGES C)
zephyr_include_directories(../../include)
add_subdirectory(../../lib lib)
target_sources(app PRIVATE src/main.c)

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rsource "../../lib/Kconfig"
source "Kconfig.zephyr"

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VERSION_MAJOR = 0
VERSION_MINOR = 0
PATCHLEVEL = 1
VERSION_TWEAK = 1
EXTRAVERSION = devel

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# Disable UART console
CONFIG_UART_CONSOLE=n
# Enable RTT console
CONFIG_RTT_CONSOLE=y
CONFIG_USE_SEGGER_RTT=y
CONFIG_SHELL_BACKEND_RTT=y

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/ {
chosen {
zephyr,console = &rtt;
zephyr,shell = &rtt;
zephyr,settings-partition = &storage_partition;
};
rtt: rtt {
compatible = "segger,rtt-uart";
#address-cells = <1>;
#size-cells = <0>;
label = "RTT";
status = "okay";
};
};
&flash0 {
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
/* Application partition starts at the beginning of flash */
slot0_partition: partition@0 {
label = "image-0";
reg = <0x00000000 DT_SIZE_K(120)>;
};
/* Use the last 8K for settings */
storage_partition: partition@1E000 {
label = "storage";
reg = <0x0001E000 DT_SIZE_K(8)>;
};
};
};
&usart1 {
modbus0 {
compatible = "zephyr,modbus-serial";
status = "okay";
};
status = "okay";
};

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/ {
aliases {
vnd7050aj = &vnd7050aj;
};
vnd7050aj: vnd7050aj {
compatible = "st,vnd7050aj";
status = "okay";
input0-gpios = <&gpio0 1 GPIO_ACTIVE_HIGH>;
input1-gpios = <&gpio0 2 GPIO_ACTIVE_HIGH>;
select0-gpios = <&gpio0 3 GPIO_ACTIVE_HIGH>;
select1-gpios = <&gpio0 4 GPIO_ACTIVE_HIGH>;
sense-enable-gpios = <&gpio0 5 GPIO_ACTIVE_HIGH>;
fault-reset-gpios = <&gpio0 6 GPIO_ACTIVE_LOW>;
io-channels = <&adc0 0>;
r-sense-ohms = <1500>;
k-vcc = <4000>;
};
modbus_uart: uart_2 {
compatible = "zephyr,native-pty-uart";
status = "okay";
current-speed = <19200>;
modbus0: modbus0 {
compatible = "zephyr,modbus-serial";
status = "okay";
};
};
};
&adc0 {
#address-cells = <1>;
#size-cells = <0>;
ref-internal-mv = <3300>;
ref-external1-mv = <5000>;
channel@0 {
reg = <0>;
zephyr,gain = "ADC_GAIN_1";
zephyr,reference = "ADC_REF_INTERNAL";
zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
zephyr,resolution = <12>;
};
};

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/ {
aliases {
vnd7050aj = &vnd7050aj;
};
vnd7050aj: vnd7050aj {
compatible = "st,vnd7050aj";
status = "okay";
input0-gpios = <&gpiob 3 GPIO_ACTIVE_HIGH>;
input1-gpios = <&gpiob 4 GPIO_ACTIVE_HIGH>;
select0-gpios = <&gpiob 0 GPIO_ACTIVE_HIGH>;
select1-gpios = <&gpiob 1 GPIO_ACTIVE_HIGH>;
sense-enable-gpios = <&gpiob 6 GPIO_ACTIVE_HIGH>;
fault-reset-gpios = <&gpiob 5 GPIO_ACTIVE_LOW>;
io-channels = <&adc1 1>;
r-sense-ohms = <1500>;
k-vcc = <4000>;
};
};
&adc1 {
status = "okay";
pinctrl-0 = <&adc1_in1_pa0>;
pinctrl-names = "default";
st,adc-clock-source = "SYNC";
st,adc-prescaler = <4>;
#address-cells = <1>;
#size-cells = <0>;
channel@1 {
reg = <1>;
zephyr,gain = "ADC_GAIN_1";
zephyr,reference = "ADC_REF_INTERNAL";
zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;
zephyr,resolution = <12>;
};
};
&usart1 {
modbus0 {
compatible = "zephyr,modbus-serial";
status = "okay";
};
status = "okay";
pinctrl-0 = <&usart1_tx_pa9 &usart1_rx_pa10>; // PA9=TX, PA10=RX for Modbus communication
pinctrl-names = "default";
};

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#include <zephyr/dt-bindings/gpio/gpio.h>
&zephyr_udc0 {
cdc_acm_uart0: cdc_acm_uart0 {
compatible = "zephyr,cdc-acm-uart";
modbus0 {
compatible = "zephyr,modbus-serial";
status = "okay";
};
};
};
&usart1 {
/delete-node/ modbus0;
};

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# Copyright (c) 2024, Eduard Iten
# SPDX-License-Identifier: Apache-2.0
description: |
STMicroelectronics VND7050AJ dual-channel high-side driver.
This is a GPIO and ADC controlled device.
compatible: "st,vnd7050aj"
include: base.yaml
properties:
input0-gpios:
type: phandle-array
required: true
description: GPIO to control output channel 0.
input1-gpios:
type: phandle-array
required: true
description: GPIO to control output channel 1.
select0-gpios:
type: phandle-array
required: true
description: GPIO for MultiSense selection bit 0.
select1-gpios:
type: phandle-array
required: true
description: GPIO for MultiSense selection bit 1.
sense-enable-gpios:
type: phandle-array
required: true
description: GPIO to enable the MultiSense output.
fault-reset-gpios:
type: phandle-array
required: true
description: GPIO to reset a latched fault (active-low).
io-channels:
type: phandle-array
required: true
description: |
ADC channel connected to the MultiSense pin. This should be an
io-channels property pointing to the ADC controller and channel number.
r-sense-ohms:
type: int
required: true
description: |
Value of the external sense resistor connected from the MultiSense
pin to GND, specified in Ohms. This is critical for correct
conversion of the analog readings.
k-factor:
type: int
default: 1500
description: |
Factor between PowerMOS and SenseMOS.
k-vcc:
type: int
default: 8000
description: |
VCC sense ratio multiplied by 1000. Used for supply voltage calculation.
t-sense-0:
type: int
default: 25
description: |
Temperature sense reference temperature in degrees Celsius.
v-sense-0:
type: int
default: 2070
description: |
Temperature sense reference voltage in millivolts.
k-tchip:
type: int
default: -5500
description: |
Temperature sense gain coefficient multiplied by 1000.
Used for chip temperature calculation.

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CONFIG_USB_DEVICE_STACK=y
CONFIG_USB_DEVICE_PRODUCT="Modbus slave node"
CONFIG_UART_LINE_CTRL=y
CONFIG_USB_DEVICE_INITIALIZE_AT_BOOT=n

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# Enable Console and printk for logging
CONFIG_CONSOLE=y
CONFIG_LOG=y
# Enable Shell
CONFIG_SHELL=y
CONFIG_REBOOT=y
CONFIG_SHELL_MODBUS=n
CONFIG_SHELL_VALVE=y
CONFIG_SHELL_SYSTEM=y
# Enable Settings Subsystem
CONFIG_SETTINGS=y
CONFIG_SETTINGS_NVS=y
CONFIG_NVS=y
CONFIG_FLASH=y
CONFIG_FLASH_MAP=y
CONFIG_FLASH_PAGE_LAYOUT=y
# Config modbus
CONFIG_UART_INTERRUPT_DRIVEN=y
CONFIG_MODBUS=y
CONFIG_MODBUS_ROLE_SERVER=y
CONFIG_MODBUS_LOG_LEVEL_DBG=y
# enable Valve Driver
CONFIG_LIB_VALVE=y
CONFIG_LOG_VALVE_LEVEL=4
# Enable VND7050AJ
CONFIG_VND7050AJ=y

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#include <zephyr/kernel.h>
#include <zephyr/logging/log.h>
#include <zephyr/settings/settings.h>
#include <app_version.h>
#include <lib/valve.h>
#include <lib/vnd7050aj.h>
LOG_MODULE_REGISTER(main, LOG_LEVEL_INF);
int main(void)
{
int rc;
LOG_INF("Starting Irrigation System CAN Node, Version %s", APP_VERSION_EXTENDED_STRING);
/* Initialize settings subsystem */
rc = settings_subsys_init();
if (rc != 0) {
LOG_ERR("Failed to initialize settings subsystem (%d)", rc);
return rc;
}
LOG_INF("Settings subsystem initialized");
/* Load settings from storage */
rc = settings_load();
if (rc == 0) {
LOG_INF("Settings loaded successfully");
} else {
LOG_WRN("Failed to load settings (%d)", rc);
}
/* Initialize valve system */
rc = valve_init();
if (rc != 0) {
LOG_ERR("Failed to initialize valve system (%d)", rc);
return rc;
}
LOG_INF("Valve system initialized");
return 0;
}

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SB_CONFIG_BOOTLOADER_MCUBOOT=y
SB_CONFIG_MCUBOOT_MODE_SINGLE_APP=y
CONFIG_LOG=y
CONFIG_MCUBOOT_LOG_LEVEL_INF=y

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