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Make your own System Monitor with ESP32 + LVGL 8

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Eric
2022-06-16 15:11:32 -07:00
parent 953f41b3d8
commit e95188e5f8
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ESP32_LVGL/LVGL8/5_System_Monitor/ESP32ForSysMonitor/ESP32ForSysMonitor.ino Normal file
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/////////////////////////////////////////////////////////////////
/*
Make your own System Monitor with ESP32 + LVGL 8
For More Information: https://youtu.be/gliwNg25fLE
Created by Eric N. (ThatProject)
*/
/////////////////////////////////////////////////////////////////
////////////////////
// Arduino IDE
// ESP v2.0.3
// LVGL v8.2.0
////////////////////
#include <ArduinoJson.h> //https://arduinojson.org/v6/doc/installation/
#include <ESP32Time.h> //https://github.com/fbiego/ESP32Time
#include <lvgl.h> //https://github.com/lvgl/lvgl
#define LGFX_USE_V1 //https://github.com/lovyan03/LovyanGFX
#include <LovyanGFX.hpp>
#include <FT6236.h> //https://github.com/DustinWatts/FT6236
#define SDA_FT6236 21
#define SCL_FT6236 22
FT6236 ts = FT6236();
class LGFX : public lgfx::LGFX_Device {
lgfx::Panel_ST7796 _panel_instance;
lgfx::Bus_SPI _bus_instance;
lgfx::Light_PWM _light_instance;
public:
LGFX(void) {
{
auto cfg = _bus_instance.config();
cfg.spi_host = VSPI_HOST;
cfg.spi_mode = 0;
cfg.freq_write = 40000000;
cfg.freq_read = 16000000;
cfg.spi_3wire = false;
cfg.use_lock = true;
cfg.dma_channel = 1;
cfg.pin_sclk = 18;
cfg.pin_mosi = 19;
cfg.pin_miso = 23;
cfg.pin_dc = 27;
_bus_instance.config(cfg);
_panel_instance.setBus(&_bus_instance);
}
{
auto cfg = _panel_instance.config();
cfg.pin_cs = 5;
cfg.pin_rst = -1;
cfg.pin_busy = -1;
cfg.memory_width = 320;
cfg.memory_height = 480;
cfg.panel_width = 320;
cfg.panel_height = 480;
cfg.offset_x = 0;
cfg.offset_y = 0;
cfg.offset_rotation = 0;
cfg.dummy_read_pixel = 8;
cfg.dummy_read_bits = 1;
cfg.readable = true;
cfg.invert = false;
cfg.rgb_order = false;
cfg.dlen_16bit = false;
cfg.bus_shared = true;
_panel_instance.config(cfg);
}
{
auto cfg = _light_instance.config();
cfg.pin_bl = 12;
cfg.invert = false;
cfg.freq = 44100;
cfg.pwm_channel = 7;
_light_instance.config(cfg);
_panel_instance.setLight(&_light_instance);
}
setPanel(&_panel_instance);
}
};
LGFX tft;
ESP32Time rtc;
StaticJsonDocument<512> doc;
struct queue_t {
String data_string;
};
static QueueHandle_t data_queue;
/*Change to your screen resolution*/
static const uint32_t screenWidth = 480;
static const uint32_t screenHeight = 320;
static lv_disp_draw_buf_t draw_buf;
static lv_color_t buf[screenWidth * 10];
int prev_cpu_usage = 0;
int prev_mem_usage = 0;
/* Display flushing */
void my_disp_flush(lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p) {
uint32_t w = (area->x2 - area->x1 + 1);
uint32_t h = (area->y2 - area->y1 + 1);
tft.startWrite();
tft.setAddrWindow(area->x1, area->y1, w, h);
tft.writePixels((lgfx::rgb565_t *)&color_p->full, w * h);
tft.endWrite();
lv_disp_flush_ready(disp);
}
/*Read the touchpad*/
void my_touchpad_read(lv_indev_drv_t *indev_driver, lv_indev_data_t *data) {
if (ts.touched()) {
data->state = LV_INDEV_STATE_PR;
TS_Point p = ts.getPoint();
data->point.x = tft.width() - p.y;
data->point.y = p.x;
} else {
data->state = LV_INDEV_STATE_REL;
}
}
void setup() {
Serial.begin(115200);
tft.begin();
tft.setRotation(3);
tft.setBrightness(255);
if (!ts.begin(40, SDA_FT6236, SCL_FT6236)) {
Serial.println("Unable to start the capacitive touch Screen.");
}
lv_init();
lv_disp_draw_buf_init(&draw_buf, buf, NULL, screenWidth * 10);
/*Initialize the display*/
static lv_disp_drv_t disp_drv;
lv_disp_drv_init(&disp_drv);
/*Change the following line to your display resolution*/
disp_drv.hor_res = screenWidth;
disp_drv.ver_res = screenHeight;
disp_drv.flush_cb = my_disp_flush;
disp_drv.draw_buf = &draw_buf;
lv_disp_drv_register(&disp_drv);
/*Initialize the (dummy) input device driver*/
static lv_indev_drv_t indev_drv;
lv_indev_drv_init(&indev_drv);
indev_drv.type = LV_INDEV_TYPE_POINTER;
indev_drv.read_cb = my_touchpad_read;
lv_indev_drv_register(&indev_drv);
lv_main();
data_queue = xQueueCreate(8, sizeof(queue_t));
xTaskCreatePinnedToCore(lvglTimerHandler,
"lvglTimerHandler",
4096,
NULL,
2,
NULL,
1);
xTaskCreatePinnedToCore(serialTask,
"serialTask",
2048,
NULL,
1,
NULL,
0);
}
void lvglTimerHandler(void *pvParameters) {
queue_t q;
while (1) {
if (xQueueReceive(data_queue, &q, 0) == pdTRUE) {
dataParser(q.data_string);
loading_spinner_delete();
}
lv_timer_handler();
vTaskDelay(5);
}
}
void loop() {}
static lv_obj_t *loading_screen;
static lv_obj_t *meter;
static lv_obj_t *date_time_label;
static lv_obj_t *cpu_label;
static lv_obj_t *mem_label;
static lv_obj_t *battery_label;
static lv_meter_indicator_t *cpu_indic;
static lv_meter_indicator_t *mem_indic;
static lv_obj_t *process_list;
static lv_anim_t a;
static void set_value(void *indic, int32_t v) {
lv_meter_set_indicator_end_value(meter, (lv_meter_indicator_t *)indic, v);
}
void lv_main(void) {
meter = lv_meter_create(lv_scr_act());
lv_obj_align(meter, LV_ALIGN_BOTTOM_LEFT, 0, 0);
lv_obj_set_size(meter, 280, 280);
lv_obj_remove_style(meter, NULL, LV_PART_INDICATOR);
lv_meter_scale_t *scale = lv_meter_add_scale(meter);
lv_meter_set_scale_ticks(meter, scale, 11, 2, 10, lv_palette_main(LV_PALETTE_GREY));
lv_meter_set_scale_major_ticks(meter, scale, 1, 2, 30, lv_color_hex3(0xeee), 15);
lv_meter_set_scale_range(meter, scale, 0, 100, 270, 90);
cpu_indic = lv_meter_add_arc(meter, scale, 10, lv_palette_main(LV_PALETTE_RED), 0);
mem_indic = lv_meter_add_arc(meter, scale, 10, lv_palette_main(LV_PALETTE_BLUE), -20);
lv_anim_init(&a);
lv_anim_set_exec_cb(&a, set_value);
static lv_style_t style_red;
lv_style_init(&style_red);
lv_style_set_radius(&style_red, 5);
lv_style_set_bg_opa(&style_red, LV_OPA_COVER);
lv_style_set_bg_color(&style_red, lv_palette_main(LV_PALETTE_RED));
lv_style_set_outline_width(&style_red, 2);
lv_style_set_outline_color(&style_red, lv_palette_main(LV_PALETTE_RED));
lv_style_set_outline_pad(&style_red, 4);
static lv_style_t style_blue;
lv_style_init(&style_blue);
lv_style_set_radius(&style_blue, 5);
lv_style_set_bg_opa(&style_blue, LV_OPA_COVER);
lv_style_set_bg_color(&style_blue, lv_palette_main(LV_PALETTE_BLUE));
lv_style_set_outline_width(&style_blue, 2);
lv_style_set_outline_color(&style_blue, lv_palette_main(LV_PALETTE_BLUE));
lv_style_set_outline_pad(&style_blue, 4);
lv_obj_t *red_obj = lv_obj_create(lv_scr_act());
lv_obj_set_size(red_obj, 10, 10);
lv_obj_add_style(red_obj, &style_red, 0);
lv_obj_align(red_obj, LV_ALIGN_CENTER, -60, 80);
cpu_label = lv_label_create(lv_scr_act());
lv_obj_set_width(cpu_label, 200);
lv_label_set_text(cpu_label, "CPU Usage: 0%");
lv_obj_align_to(cpu_label, red_obj, LV_ALIGN_OUT_RIGHT_MID, 10, 0);
lv_obj_t *blue_obj = lv_obj_create(lv_scr_act());
lv_obj_set_size(blue_obj, 10, 10);
lv_obj_add_style(blue_obj, &style_blue, 0);
lv_obj_align(blue_obj, LV_ALIGN_CENTER, -60, 110);
mem_label = lv_label_create(lv_scr_act());
lv_obj_set_width(mem_label, 200);
lv_label_set_text(mem_label, "MEM Usage: 0%");
lv_obj_align_to(mem_label, blue_obj, LV_ALIGN_OUT_RIGHT_MID, 10, 0);
date_time_label = lv_label_create(lv_scr_act());
lv_obj_set_style_text_align(date_time_label, LV_TEXT_ALIGN_RIGHT, 0);
lv_obj_align(date_time_label, LV_ALIGN_TOP_RIGHT, -10, 0);
lv_label_set_text(date_time_label, "Mon 1:25 PM");
battery_label = lv_label_create(lv_scr_act());
lv_label_set_text(battery_label, LV_SYMBOL_CHARGE " 0%");
lv_obj_set_style_text_align(battery_label, LV_TEXT_ALIGN_RIGHT, 0);
lv_obj_align(battery_label, LV_ALIGN_TOP_RIGHT, -130, 0);
process_list = lv_list_create(lv_scr_act());
lv_obj_set_size(process_list, 240, 190);
lv_obj_align(process_list, LV_ALIGN_TOP_RIGHT, 0, 30);
lv_obj_set_style_pad_row(process_list, -10, 0);
lv_obj_set_style_pad_hor(process_list, -6, 0);
loading_spinner_make();
}
void loading_spinner_make() {
loading_screen = lv_obj_create(lv_scr_act());
lv_obj_set_size(loading_screen, 480, 320);
lv_obj_center(loading_screen);
lv_obj_t *loading_spinner = lv_spinner_create(loading_screen, 1000, 60);
lv_obj_set_size(loading_spinner, 240, 240);
lv_obj_center(loading_spinner);
lv_obj_t *loading_label = lv_label_create(loading_spinner);
lv_label_set_text(loading_label, "Waiting for Data...");
lv_obj_center(loading_label);
}
void loading_spinner_delete() {
if (loading_screen != NULL) {
lv_obj_del(loading_screen);
loading_screen = NULL;
}
}
void serialTask(void *pvParameters) {
queue_t q;
while (1) {
if (Serial.available()) {
String input = Serial.readStringUntil('\n');
input.trim();
q.data_string = input;
xQueueSend(data_queue, &q, portMAX_DELAY);
}
vTaskDelay(100);
}
}
void dataParser(String jsonData) {
Serial.println(jsonData);
if (jsonData.length() < 10)
return;
DeserializationError error = deserializeJson(doc, jsonData);
if (error) {
Serial.print(F("deserializeJson() failed: "));
Serial.println(error.f_str());
return;
}
long local_time = doc["local_time"];
long utc_offset = doc["utc_offset"];
update_time(local_time, utc_offset);
float cpu_percent_total = doc["cpu_percent_total"];
float mem_percent = doc["mem_percent"];
update_cpu_mem_usage(cpu_percent_total, mem_percent);
float battery_percent = doc["battery_percent"];
bool power_plugged = doc["power_plugged"];
update_battery(battery_percent, power_plugged);
update_process(doc["cpu_top5_process"]);
}
void update_time(long local_time, long utc_offset) {
rtc.setTime(local_time);
rtc.offset = utc_offset;
lv_label_set_text(date_time_label, rtc.getTime("%a %I:%M %p").c_str());
}
void update_cpu_mem_usage(float cpu_percent_total, float mem_percent) {
String cpu_text = String("CPU Usage: ") + cpu_percent_total + "%";
lv_label_set_text(cpu_label, cpu_text.c_str());
lv_anim_set_var(&a, cpu_indic);
lv_anim_set_time(&a, 500);
lv_anim_set_values(&a, prev_cpu_usage, int(cpu_percent_total));
lv_anim_start(&a);
prev_cpu_usage = int(cpu_percent_total);
String mem_text = String("MEM Usage: ") + mem_percent + "%";
lv_label_set_text(mem_label, mem_text.c_str());
lv_anim_set_var(&a, mem_indic);
lv_anim_set_time(&a, 500);
lv_anim_set_values(&a, prev_mem_usage, int(mem_percent));
lv_anim_start(&a);
prev_mem_usage = int(mem_percent);
}
void update_battery(float battery_percent, bool power_plugged) {
char buffer[16];
if (power_plugged) {
sprintf(buffer, "\xEF\x83\xA7 %d %%", int(battery_percent));
} else {
if (battery_percent >= 95) {
sprintf(buffer, "\xEF\x89\x80 %d %%", int(battery_percent));
} else if (battery_percent >= 75 && battery_percent < 95) {
sprintf(buffer, "\xEF\x89\x81 %d %%", int(battery_percent));
} else if (battery_percent >= 50 && battery_percent < 75) {
sprintf(buffer, "\xEF\x89\x82 %d %%", int(battery_percent));
} else if (battery_percent >= 20 && battery_percent < 50) {
sprintf(buffer, "\xEF\x89\x83 %d %%", int(battery_percent));
} else {
sprintf(buffer, "\xEF\x89\x84 %d %%", int(battery_percent));
}
}
lv_label_set_text(battery_label, buffer);
}
void update_process(JsonArray processes) {
int arraySize = processes.size();
if (arraySize > 0) {
lv_obj_clean(process_list);
for (int i = 0; i < arraySize; i++) {
lv_obj_t *list_item_button = lv_list_add_btn(process_list, LV_SYMBOL_WARNING, processes[i]);
lv_obj_t *child = lv_obj_get_child(list_item_button, 1);
lv_label_set_long_mode(child, LV_LABEL_LONG_WRAP);
}
}
}

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ESP32_LVGL/LVGL8/5_System_Monitor/PythonScriptForSysMonitor/RepeatedTimer.py Normal file
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import threading
import time
class RepeatedTimer(object):
def __init__(self, interval, function, *args, **kwargs):
self._timer = None
self.interval = interval
self.function = function
self.args = args
self.kwargs = kwargs
self.is_running = False
self.next_call = time.time()
self.start()
def _run(self):
self.is_running = False
self.start()
self.function(*self.args, **self.kwargs)
def start(self):
if not self.is_running:
self.next_call += self.interval
self._timer = threading.Timer(self.next_call - time.time(), self._run)
self._timer.start()
self.is_running = True
def stop(self):
self._timer.cancel()
self.is_running = False

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ESP32_LVGL/LVGL8/5_System_Monitor/PythonScriptForSysMonitor/main.py Normal file
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'''
Make your own System Monitor with ESP32 + LVGL 8
For More Information: https://youtu.be/gliwNg25fLE
Created by Eric N. (ThatProject)
'''
from serial import SerialTimeoutException, SerialException
from RepeatedTimer import RepeatedTimer
import sys
import psutil
import datetime
import json
import time
import argparse
import serial
serial_baudrate = 115200
ser = None
update_interval = 2
def write_to_serial(str_json):
try:
ser.write(str_json.encode())
except SerialTimeoutException:
print('[Error] Timeout when writing to the serial.')
except SerialException:
print('[Error] An unexpected exception occurred while writing to the serial.')
def process_list(delay=1):
proccesses = list(psutil.process_iter())
procs = []
try:
for proc in proccesses:
proc.cpu_percent(None)
sys.stdout.flush()
time.sleep(delay)
for proc in proccesses:
percent = proc.cpu_percent(None)
if percent:
procs.append((percent, proc.name()))
except ProcessLookupError:
pass
except psutil.NoSuchProcess:
pass
res = sorted(procs, key=lambda x: x[0], reverse=True)[:5]
return res
def get_system_info():
data = {}
# Get System LocalTime
ts = time.time()
utc_offset = (datetime.datetime.fromtimestamp(ts) -
datetime.datetime.utcfromtimestamp(ts)).total_seconds()
data['utc_offset'] = int(utc_offset)
presentDate = datetime.datetime.now()
unix_timestamp = datetime.datetime.timestamp(presentDate)
data['local_time'] = int(unix_timestamp)
# CPU Usage
cpu_percent_cores = psutil.cpu_percent(interval=2, percpu=True)
avg = sum(cpu_percent_cores) / len(cpu_percent_cores)
data['cpu_percent_total'] = round(avg, 2)
# MEM Usage
data['mem_percent'] = psutil.virtual_memory().percent
# Battery Info
battery = psutil.sensors_battery()
data['battery_percent'] = battery.percent if battery.percent is not None else 100
data['power_plugged'] = battery.power_plugged
# Top 5 CPU Usage Processes
data['cpu_top5_process'] = ['%.1f%% %s' % x for x in process_list()]
write_to_serial(json.dumps(data))
if __name__ == "__main__":
parser = argparse.ArgumentParser(description='<Need to set your Serial Port, BaudRate and Interval to fetch system info.> (sudo permission required on Mac)', usage='python main.py --port /dev/cu.SLAB_USBtoUART')
parser.add_argument('-p', '--port', help='Set the Connected USB Port')
parser.add_argument('-b', '--baud', help='Set Serial Baud Rate(default=115200)', type=int, default=115200)
parser.add_argument('-i', '--interval', help='Set Update Interval in Second(default=2)', type=int, default=2)
args = parser.parse_args()
if args.port is None:
print('usage: sudo python main.py --port /dev/cu.SLAB_USBtoUART')
sys.exit()
if args.baud is not None:
serial_baudrate = args.baud
if args.interval is not None and args.interval > 1:
update_interval = args.interval
ser = serial.Serial(args.port, serial_baudrate)
print(ser)
if ser is not None and ser.is_open:
get_system_info()
rt = RepeatedTimer(update_interval, get_system_info)
else:
print('[Error] Check your Serial Port.')
sys.exit()

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ESP32_LVGL/LVGL8/5_System_Monitor/PythonScriptForSysMonitor/requirements.txt Normal file
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psutil
pyserial