hello dear all, i am working on a project that when i send a hex packet i can show that in my pc by uart. but i cant see the packet it just show zero. i write my code here:
#include <LPC17xx.h> #include <stdio.h> #include "uart.h" unsigned char j[8]; void Delay (uint32_t Time) { uint32_t i; i = 0; while (Time--) { for (i = 0; i < 5000; i++); } } void read_uart2(void){ unsigned char j[8]; char temp; int i=0; for (i=0; i<7; i++) { temp=UART2_GetChar(); j[i]=temp; i++; }; } int main(void) { int i=0 ; // unsigned char i[8]; unsigned char lcd_buf[8]; SystemInit(); UART0_Init(); UART2_Init(); read_uart2(); while (1) { UART2_SendString("-LPC1768 -\r\n"); UART2_SendString((unsigned char *)lcd_buf); sprintf(lcd_buf,"counter: %x %x %x %x %x %x %x %x\r\n\n",j[0],j[1],j[2],j[3],j[4],j[5],j[6],j[7]); Delay(4000); } }