C

Simple Gauge

code

#include "lvgl/lvgl.h"

void lv_ex_gauge_1(void)
{
    /*Create a style*/
    static lv_style_t style;
    lv_style_copy(&style, &lv_style_pretty_color);
    style.body.main_color = lv_color_hex3(0x666);     /*Line color at the beginning*/
    style.body.grad_color =  lv_color_hex3(0x666);    /*Line color at the end*/
    style.body.padding.left = 10;                      /*Scale line length*/
    style.body.padding.inner = 8 ;                    /*Scale label padding*/
    style.body.border.color = lv_color_hex3(0x333);   /*Needle middle circle color*/
    style.line.width = 3;
    style.text.color = lv_color_hex3(0x333);
    style.line.color = LV_COLOR_RED;                  /*Line color after the critical value*/

    /*Describe the color for the needles*/
    static lv_color_t needle_colors[3];
    needle_colors[0] = LV_COLOR_BLUE;
    needle_colors[1] = LV_COLOR_ORANGE;
    needle_colors[2] = LV_COLOR_PURPLE;

    /*Create a gauge*/
    lv_obj_t * gauge1 = lv_gauge_create(lv_scr_act(), NULL);
    lv_gauge_set_style(gauge1, LV_GAUGE_STYLE_MAIN, &style);
    lv_gauge_set_needle_count(gauge1, 3, needle_colors);
    lv_obj_set_size(gauge1, 150, 150);
    lv_obj_align(gauge1, NULL, LV_ALIGN_CENTER, 0, 20);

    /*Set the values*/
    lv_gauge_set_value(gauge1, 0, 10);
    lv_gauge_set_value(gauge1, 1, 20);
    lv_gauge_set_value(gauge1, 2, 30);
}

MicroPython

Simple Gauge

code

# Create a style
style = lv.style_t()
lv.style_copy(style, lv.style_pretty_color)
style.body.main_color = lv.color_hex3(0x666)     # Line color at the beginning
style.body.grad_color =  lv.color_hex3(0x666)    # Line color at the end
style.body.padding.left = 10                     # Scale line length
style.body.padding.inner = 8                     # Scale label padding
style.body.border.color = lv.color_hex3(0x333)   # Needle middle circle color
style.line.width = 3
style.text.color = lv.color_hex3(0x333)
style.line.color = lv.color_hex3(0xF00)          # Line color after the critical value

# Describe the color for the needles
needle_colors = [
    lv.color_make(0x00, 0x00, 0xFF),
    lv.color_make(0xFF, 0xA5, 0x00),
    lv.color_make(0x80, 0x00, 0x80)
]

# Create a gauge
gauge1 = lv.gauge(lv.scr_act())
gauge1.set_style(lv.gauge.STYLE.MAIN, style)
gauge1.set_needle_count(len(needle_colors), needle_colors)
gauge1.set_size(150, 150)
gauge1.align(None, lv.ALIGN.CENTER, 0, 20)

# Set the values
gauge1.set_value(0, 10)
gauge1.set_value(1, 20)
gauge1.set_value(2, 30)