everything is working fine, when i read a single character from both uart. but when i send a string on hardware uart, the string doesn't gets reads properly by these lines;
UART1_Read_Text(buffer, "OK", 100);
UART1_Write_Text(buffer);
I've found out whats causing this problem. that is, my main while loop gets stuck in Soft_UART_read() until it gets break by an interrupt. while its stuck over there, the hardware uart doesn't gets proper time to read the whole string, so as a result it displays some of the characters of that string.
how can i overcome this ? do i need to use a separate interrupt for hardware uart aswel ? or what ? any help would be highly appreciated. here is a snip of my code;
Code: Select all
void main() {
INTCON.GIE=1; //globle interrupt enable
INTCON.PEIE=1; //peripharel interrupt enable
INTCON.TMR0IF = 0x0; //Clear timer0 overflow interrupt flag
INTCON.TMR0IE = 1; //enable the timer0 by setting TRM0IE flag
T0CON.TMR0ON = 1; // Timer0 On/Off Control bit: 1=Enables Timer0 / 0=Stops Timer0
T0CON.T08BIT = 0; // Timer0 8-bit/16-bit Control bit: 1=8-bit timer/counter / 0=16-bit timer/counter
T0CON.T0CS = 0; // TMR0 Clock Source Select bit: 0=Internal Clock (CLKO) / 1=Transition on T0CKI pin
T0CON.T0SE = 0; // TMR0 Source Edge Select bit: 0=low/high / 1=high/low
T0CON.PSA = 1; // Prescaler Assignment bit: 0=Prescaler is assigned; 1=NOT assigned/bypassed
T0CON.T0PS2 = 0; // bits 2-0 PS2:PS0: Prescaler Select bits
T0CON.T0PS1 = 1;
T0CON.T0PS0 = 1;
TMR0H = 0xBD; // preset for Timer0 MSB register
TMR0L = 0xCD; // preset for Timer0 LSB register
while(1) {
data1 = Soft_UART_Read(&error);
Soft_UART_Write(data1);
if (data1 == 'b') {
for(x = 0; x <= strlen(alive); x++) {
Soft_UART_Write(alive[x]);
}
}
if (UART1_Data_Ready()) { // If data is received,
UART1_Read_Text(buffer, "OK", 100); // reads text until 'OK' is found
UART1_Write_Text(buffer); // sends back text
/*if (uart_rd == 'a') {
UART1_Write_Text("\rSensor 1 data\r");
}*/
//else
//UART1_Write(uart_rd); // and send data via UART
}
}
}
