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[SOLVED] Mikro C Software UART at 3.3V internal oscillator 8mhz

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lockman_akim

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Hi,

I have a problem with my software uart, i dont receive any data at my computer after transmitting via soft uart. is that the problem cause by the unstable internal oscillator? here my code written using mikro c.

Code:
char input[4];
char celcius[4];
char error,byte_read;
unsigned int raw_celcius;
int ad_val;
float ph;
char some_byte = 0x31;

void main()
{
    UART1_Init(38400);
    OSCCON.F6 = 1;
    OSCCON.F5 = 1;
    OSCCON.F4 = 1;
    ADCON0 = 0b00000001;
    ADCON1.F7 = 1;
    ANSEL = 0b11111111;
    TRISD = 0;
    PORTD = 0;
    
    UART1_Write_Text("LO");
    UART1_Write(13);
    PORTD = 255;
    Delay_ms(500);

    UART1_Write_Text("L1");
    UART1_Write(13);
    PORTD = 255;
    Delay_ms(500);
    
    error = Soft_UART_Init(&PORTC, 5, 4, 9600, 0);
     
    do
    {

     if (error == 0)
     {
      PORTD = 255;
      Soft_UART_Write(some_byte);
      delay_ms(100);
      PORTD = 0;
      delay_ms(100);
      error = Soft_UART_Init(&PORTC, 5, 4, 9600, 0);
     }
     else if (error > 0)
     {
      PORTD = 0;
     }
     
    }
    while(1);
}
 

im using pic16f887
mikro c version 6.0

i dont have any problem with hardware uart, hardware uart is connected to the sensor.
software uart is connected to xbee. yes i already configure xbee and it manage to communicate each other.
but when i plug xbee to my board, no data was received.

i try to directly used usb to uart converter and the data showed on my pc.
 

i change the Brown Out Reset to off. and it solved my problem.
 

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