Honored Contributor
Honored ContributorHi, I changed my receive function into the following one, but when I use those receive/transmit function too many times in the same main, I keep receive strange things in my nios II console.
int receive(char *buffer){
int size=0,j=10000000;
alt_u8 status;
while(j){
status= IORD_ALTERA_AVALON_UART_STATUS(UART_BASE);
while(status & RRDY){ // check if reception ready{
buffer=IORD_ALTERA_AVALON_UART_RXDATA(UART_BASE);//receive character
status= IORD_ALTERA_AVALON_UART_STATUS(UART_BASE); //update status register
size++;
}
j--;
}
return size;
}
int main () {
char *buffer=malloc(200);
int size=0;
size=receive(buffer);
printf("%d\n%s",size,buffer);
return 0;
}
New Contributoryou are not writing to the buffer correctly. You need to increment the buffer index as well as check that you are not attempting to write outside the bounds of the allocated memory
if(size < 200)
buffer[size] =
IORD_ALTERA_AVALON_UART_RXDATA(UART_BASE);//receive characterelse
//buffer full
