133 lines
3.7 KiB
C
133 lines
3.7 KiB
C
#include "modbus-tcp.h"
|
|
|
|
char tcp_buffer[1024];
|
|
|
|
#define MAX_REG 250
|
|
|
|
char registers[MAX_REG];
|
|
|
|
static err_t modbus_incomming_data(void *arg, struct tcp_pcb *pcb, struct pbuf *p, err_t err){
|
|
int i;
|
|
int len;
|
|
char *pc;
|
|
uint8_t bg_red = 0;
|
|
uint8_t bg_green = 0;
|
|
uint8_t bg_blue = 0;
|
|
uint8_t txt_red = 0;
|
|
uint8_t txt_green = 0;
|
|
uint8_t txt_blue = 0;
|
|
uint8_t nr_img = 0;
|
|
uint32_t result_bg = 0;
|
|
uint32_t result_txt = 0;
|
|
uint32_t result = 0;
|
|
|
|
char text[200];
|
|
|
|
for(i = 0; i < 100;i++){
|
|
text[i] = 95; // _
|
|
}
|
|
text[199] = '\0';
|
|
|
|
if (p != NULL){
|
|
printf("data not null\n");
|
|
//here im going to procces the modbusdata
|
|
tcp_recved( pcb, p->tot_len );
|
|
pc = (char*)p->payload;
|
|
len =p->tot_len;
|
|
|
|
//putting the bufer in the register array
|
|
for( i=0; i<len; i++ ) {
|
|
registers[i] = pc[i];//getting the error "void value not ignored as it ought to be" on this line
|
|
}
|
|
|
|
if(registers[7] == 0x10){// Check if it's a Modbus Write Multiple Registers request (0x10)
|
|
printf("in writing multiple register mode\n");
|
|
}
|
|
//putting the values from the array in their variable
|
|
bg_red = (uint8_t)(registers[14]);//01
|
|
bg_green = (uint8_t)(registers[16]);//02
|
|
bg_blue = (uint8_t)(registers[18]);//03
|
|
txt_red = (uint8_t)(registers[20]);//04
|
|
txt_green = (uint8_t)(registers[22]);//05
|
|
txt_blue = (uint8_t)(registers[24]);//06
|
|
nr_img = (uint8_t)(registers[26]);//07
|
|
//registers[428] //208
|
|
|
|
printf("%d %d %d %d %d %d %d ",bg_red,bg_green,bg_blue,txt_red,txt_green,txt_blue,nr_img);
|
|
|
|
int j = 0;
|
|
for(i = 28;i < 428;i++){
|
|
if(i % 2 == 0){
|
|
text[j]=registers[i];
|
|
j++;
|
|
}
|
|
}
|
|
|
|
for(i = 0; i < 100;i++){
|
|
printf("%c ",text[i]);
|
|
}
|
|
printf("\n");
|
|
|
|
//processing the text data to screen
|
|
char *textstring = text;
|
|
|
|
result_bg = 0xff000000;
|
|
result_bg |= ((uint32_t)bg_red) << 16;
|
|
result_bg |= ((uint32_t)bg_green) << 8;
|
|
result_bg |= bg_blue;
|
|
|
|
result_txt = 0xff000000;
|
|
result_txt |= ((uint32_t)txt_red) << 16;
|
|
result_txt |= ((uint32_t)txt_green) << 8;
|
|
result_txt |= txt_blue;
|
|
|
|
lcd_display_text(textstring, 10, 50, result_txt, result_bg, LCD_FONT24);
|
|
|
|
//proccesing the image index
|
|
|
|
size_t number_of_files = llfs_file_count();//hoeveel files er zijn
|
|
|
|
llfs_file_t file_list[number_of_files];//geheugen vrijmaken voor files
|
|
|
|
number_of_files = llfs_file_list(file_list, number_of_files, NULL);//vrijgemaakt geheugen invullen met de lijst
|
|
|
|
lcd_display_text(file_list[nr_img - 1].name, 10, 75, LCD_COLOR_MAGENTA, LCD_COLOR_YELLOW, LCD_FONT24);//putting the file name on screen
|
|
|
|
//functie_voor_naam
|
|
|
|
|
|
|
|
} else if (err == ERR_OK){
|
|
tcp_close(pcb);//when everithing was ok close the tcpconnection
|
|
}
|
|
return ERR_OK;
|
|
}
|
|
|
|
static err_t modbus_accept(void *arg, struct tcp_pcb *pcb, err_t err )
|
|
{
|
|
LWIP_UNUSED_ARG( arg );//Eliminates compiler warning about unused arguments
|
|
LWIP_UNUSED_ARG( err );//Eliminates compiler warning about unused arguments
|
|
tcp_setprio( pcb, TCP_PRIO_MIN );//Sets the priority of a connection.
|
|
tcp_recv( pcb, modbus_incomming_data);//sets which function is being called when new data arives
|
|
tcp_err( pcb, NULL );//sets the function thats called when an error ocours
|
|
tcp_poll( pcb, NULL, 4 );//the aplication is being polled every 4 seconds
|
|
tcp_write( pcb, "TEST\r\n", 8, 0 );//pcb , data , lenght in bytes , apiflags
|
|
printf("connected\n");
|
|
tcp_sent( pcb, NULL );//Specifies the callback function that should be called when data has successfully been received
|
|
|
|
return ERR_OK;
|
|
}
|
|
|
|
void modbus_init( void )
|
|
{
|
|
struct tcp_pcb *modbus_pcb;
|
|
modbus_pcb = tcp_new();//creating a new tcp pcb
|
|
tcp_bind(modbus_pcb, IP_ADDR_ANY, MODBUSPOORT);//bind the modbus_pcb to port 502
|
|
|
|
modbus_pcb = tcp_listen( modbus_pcb );//listen
|
|
tcp_accept(modbus_pcb, modbus_accept);//set callback function
|
|
}
|
|
|
|
|
|
|