Hi again,
I already posted a topic about nios ii altera ans esp8266, I fixed all my problems with the esp8266, now i still struggling with my uart C code, my transmit function works well, but with my receive function its always a mess, its sometimes only if I don't use it, I just tried to return from my receive function two values: the received message and its size, I tried the following code but it does not work at all:
please guys I need help I'm lost
Thanks a lot
I already posted a topic about nios ii altera ans esp8266, I fixed all my problems with the esp8266, now i still struggling with my uart C code, my transmit function works well, but with my receive function its always a mess, its sometimes only if I don't use it, I just tried to return from my receive function two values: the received message and its size, I tried the following code but it does not work at all:
Code:
void uart_write(char* comm)
{
message* mess ;
int count=0;
strcpy(mess->send,comm);//command
mess->lenS=strlen(mess->send);//command length
for (count=0;count<mess->lenS;count++)
{
if(ALTERA_AVALON_UART_STATUS_TRDY_MSK==TRDY)// check if transmit ready
{
IOWR_ALTERA_AVALON_UART_TXDATA(UART_BASE,mess->send[count]);//send character
Delay(600);//wait the end of transmission
}
}
if (ALTERA_AVALON_UART_STATUS_TRDY_MSK == TRDY)// check if transmit ready
IOWR_ALTERA_AVALON_UART_TXDATA(UART_BASE,0X0D);// \r
if (ALTERA_AVALON_UART_STATUS_TRDY_MSK == TRDY)// check if transmit ready
IOWR_ALTERA_AVALON_UART_TXDATA(UART_BASE,0x0A);// \n
}
void receive(char *buffer, int size){
alt_u8 status;
status= IORD_ALTERA_AVALON_UART_STATUS(UART_BASE);
while((status & RRDY)==RRDY ){ // check if reception ready{
buffer[size]=IORD_ALTERA_AVALON_UART_RXDATA(UART_BASE);//receive character
status= IORD_ALTERA_AVALON_UART_STATUS(UART_BASE); //update status register
size++;
}
}
int main()
{
uart_init();
int size=0;
char *buffer;
uart_write("AT+CWLAP");
receive(&buffer,size);
printf("%d \n %s",size,buffer);
return 0; }Thanks a lot