——Van DWIN-ontwikkelaarsforum
In hierdie uitgawe sal ons 'n bekroonde oopbron-geval van die Devin-ontwikkelaarsforum vir die toepassing van Divin Screen in die nuwe veld aan u bekendstel - blaaierwebblad en T5L Divin Screen-reekspoort in-diepte uitbreiding (Node-RED tegnologie) . Ingenieurs gebruik T5L-slimskerms om Node-RED-tegnologie deur te gee, vereis slegs 'n seriële poort om aan die internet te koppel en data-interaksie tussen die Diwen-skerm en die blaaierwebblad te realiseer. Hierdie oplossing realiseer funksies soos die stuur en ontvang van data, grafiekinteraksie en basiese inligtingvertoning tussen die slimskerm en die webblad.
1. Node-ROOI webblad wat effek vertoon
(1) Deur gebruik te maak van Node-RED-tegnologie, word die blaaier as die interaksie-ingang gebruik, sodat die blaaier en die skerm deur die seriële poort in wisselwerking tree om die ooreenstemmende funksievertoning te realiseer.
![asva (1)](https://ecdn6.globalso.com/upload/p/1355/source/2024-03/65f96baa7b18a54530.jpg)
![asva (2)](https://ecdn6.globalso.com/upload/p/1355/source/2024-03/65f96babae2d997861.jpg)
Data stuur en ontvang Tab bladsy
Ikoon interaktiewe bladbladsy
![asva (3)](https://ecdn6.globalso.com/upload/p/1355/source/2024-03/65f96bad3193a85099.jpg)
Basiese inligting Tabblad effek
(2) Die hoofverwysingskodes vir die Node-RED-webkliënt is soos volg:
{
"id": "fbb314a16ea00889",
"type": "reeks in",
"from": "09e0777eaff7fdea",
"g": "c1661722c7db00f9",
"name": "Seriële poort ontvang data",
"reeks": "83fb45b5f4b51d61",
"x": 390,
"en": 140,
"drade": [
[
"685a2fb2c2dc8fba"
]
]
},
{
"id": "1ba3c6e812e03e27",
"type": "reeks uit",
"from": "09e0777eaff7fdea",
"g": "c1661722c7db00f9",
"name": "Seriële poort stuur",
"reeks": "83fb45b5f4b51d61",
"x": 860,
"en": 260,
"drade": []
},
{
"id": "5fb7f1d3d7425133",
"type": "status",
"from": "09e0777eaff7fdea",
"g": "c1661722c7db00f9",
"name": "Monitor seriële poort status",
"omvang": [
"fbb314a16ea00889"
],
"x": 390,
"en": 200,
"drade": [
[
"3f18d1fdea398d35"
]
]
},
{
"id": "3f18d1fdea398d35",
"type": "funksie",
"from": "09e0777eaff7fdea",
"g": "c1661722c7db00f9",
"name": "Onttrek seriële poort status",
"func": "laat sta = msg.status.text;\nlaat kleur = 'rooi';\nif (sta.indexOf('nie-gekoppel') >= 0) \n sta = 'Ongekoppel';\nelse as (sta.indexOf('verbonde') >= 0)\n{\n sta = 'verbinding geslaag';\n kleur = 'groen';\n}anders\n sta = 'fout het voorgekom';\nmsg[' loonvrag'] = sta;\nmsg['kleur'] = kleur;\n\nstuur boodskap terug;",
"uitsette": 1,
"time-out": 0,
"noerr": 0,
"initialize": "",
"finaliseer": "",
"libs": [],
"x": 620,
"en": 200,
"drade": [
[
"2ec78ff0b0b9a56f"
]
]
},
{
"id": "2ec78ff0b0b9a56f",
"type": "ui_template",
"from": "09e0777eaff7fdea",
"g": "c1661722c7db00f9",
"groep": "4e4db779a7b91019",
"name": "Vertoon seriële poortstatus",
"bestelling": 1,
"wydte": 0,
"hoogte": 0,
"format": "
2. DGUSekkoppelvlakDesign
![asva (4)](https://ecdn6.globalso.com/upload/p/1355/source/2024-03/65f96bae62cee44597.jpg)
1. C51 Ingenieursontwerp
Die oplossing gebruik T5L-slimskerm-seriepoort 2 om met die Node-RED-webblad te kommunikeer. Sommige verwysingskodes is soos volg:
#sluit "sys.h" in
#sluit "uart2.h" in
#insluit
#insluit
u8 buff[200];
nietig hoof(leeg)
{
u16nommer;
u16val;
u16oud;
u8i;
sys_init();
uart2_init(115200);
oud= 0;
terwyl (1)
{
if(is_recv_complete)
{
uart2_buf[recv_len++]= 0;
uart2_buf[recv_len++]= 0;
if(strstr((char*)uart2_buf,"cmd"))
{
num= uart2_buf[3]-'0';
as (getal
{
vir(i=0;i
{
val= (getal==i);
sys_write_vp(0x2300+i,(u8*)&val, 1);
}
}elseif(getal
{
val=(getal==3);
sys_write_vp(0x2200,(u8*)&val, 1);
}
} anders
{
sys_write_vp(0x2000,uart2_buf, recv_len/2+2);
}
recv_len= 0;
is_recv_complete= 0;
}
sys_read_vp(0x1000,(u8*)&val, 1);
if(val==1)
{
sys_read_vp(0x2100,buff, 50);
vir(i=0;i
{
if(buff==0xff)
{
buff = 0x00;
buff[i+1]= 0x00;
breek;
}
}
u2_send_bytes(buff, strlen(buff));
val= 0;
sys_write_vp(0x1000,(u8*)&val, 1);
}
sys_read_vp(0x2400,(u8*)&val, 1);
if(val!=oud)
{
sprintf(buff,"%d", val);
u2_send_bytes(buff, strlen(buff));
oud= val;
}
}
}
Postyd: 28 Desember 2023
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