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#include <inttypes.h>
#include <avr/io.h>
#include "uart.h"
#include "common.h"
#include "protocol.h"
void uart_parser(char *buf)
{
answer[0] = buf[0];
switch(buf[0])
{
case CMD_UART_INIT:
uart_init_usb((char)buf[2]);
break;
case CMD_UART_DEINIT:
uart_deinit_usb((char)buf[2]);
break;
case CMD_UART_BAUDRATE:
uart_baudrate_usb((char)buf[2], (char)buf[3], (char)buf[4], (char)buf[5], (char)buf[6]);
break;
case CMD_UART_STOPBITS:
uart_stopbits_usb((char)buf[2], (char)buf[3]);
break;
case CMD_UART_DATABITS:
uart_stopbits_usb((char)buf[2], (char)buf[3]);
break;
case CMD_UART_PARITY:
uart_parity_usb((char)buf[2], (char)buf[3]);
break;
case CMD_UART_SEND:
uart_send_usb((char)buf[2], (char)buf[3], &buf[4]);
break;
case CMD_UART_RECV:
uart_recv_usb((char)buf[2], (char)buf[3]);
break;
default:
answer[1] = RSP_UNKOWN_CMD;
answer[2] = 0;
CommandAnswer(3);
}
}
void uart_init_usb(char uartport)
{
answer[1] = (unsigned char)uart_init(uartport);
answer[2] = 0;
CommandAnswer(3);
}
char uart_init(char uartport)
{
switch(uartport)
{
case 0:
octopus.ports[41] = PIN_UART;
octopus.ports[42] = PIN_UART;
/* enable transmitter receiver */
UCSR0B = (1 << RXEN0) | (1 << TXEN0);
break;
case 1:
octopus.ports[14] = PIN_UART;
octopus.ports[15] = PIN_UART;
/* enable transmitter receiver */
UCSR1B = (1 << RXEN1) | (1 << TXEN1);
break;
default:
return RSP_UNKOWN_PIN;
}
return RSP_OK;
}
void uart_deinit_usb(char uartport)
{
answer[1] = (unsigned char)uart_deinit(uartport);
answer[2] = 0;
CommandAnswer(3);
}
char uart_deinit(char uartport)
{
switch(uartport)
{
case 0:
octopus.ports[41] = PIN_NONE;
octopus.ports[42] = PIN_NONE;
UBRR0H = 0;
UBRR0L = 0;
UCSR0B = 0;
UCSR0C = 0;
break;
case 1:
octopus.ports[14] = PIN_NONE;
octopus.ports[15] = PIN_NONE;
UBRR1H = 0;
UBRR1L = 0;
UCSR1B = 0;
UCSR1C = 0;
break;
default:
return RSP_UNKOWN_PIN;
}
return RSP_OK;
}
void uart_baudrate_usb(char uartport, char ubrrll, char ubrrlh, char ubrrhl, char ubrrhh)
{
answer[1] = (unsigned char)uart_baudrate(uartport, ubrrll, ubrrlh, ubrrhl, ubrrhh);
answer[2] = 0;
CommandAnswer(3);
}
char uart_baudrate(char uartport, char ubrrll, char ubrrlh, char ubrrhl, char ubrrhh)
{
switch(uartport)
{
case 0:
UBRR0H = (ubrrhh << 8) | ubrrhl;
UBRR0L = (ubrrhl << 8) | ubrrll;
break;
case 1:
UBRR1H = (ubrrhh << 8) | ubrrhl;
UBRR1L = (ubrrhl << 8) | ubrrll;
break;
default:
return RSP_UNKOWN_PIN;
}
return RSP_OK;
}
void uart_stopbits_usb(char uartport, char stopbits)
{
answer[1] = (unsigned char)uart_stopbits(uartport, stopbits);
answer[2] = 0;
CommandAnswer(3);
}
char uart_stopbits(char uartport, char stopbits)
{
char usbs;
switch(stopbits)
{
case 1: usbs = 0; break;
case 2: usbs = 2; break;
default: usbs = 0; break;
}
switch(uartport)
{
case 0:
UCSR0C |= (usbs << USBS0);
break;
case 1:
UCSR1C |= (usbs << USBS1);
break;
default:
return RSP_UNKOWN_PIN;
}
return RSP_OK;
}
void uart_databits_usb(char uartport, char databits)
{
answer[1] = (unsigned char)uart_databits(uartport, databits);
answer[2] = 0;
CommandAnswer(3);
}
char uart_databits(char uartport, char databits)
{
char ucsz1,ucsz0;
switch(databits) {
case 5: ucsz1 = 0; ucsz0 = 0; break;
case 6: ucsz1 = 0; ucsz0 = 1; break;
case 7: ucsz1 = 1; ucsz0 = 0; break;
case 8: ucsz1 = 1; ucsz0 = 1; break;
default: ucsz1 = 1; ucsz0 = 1; break;
}
switch(uartport)
{
case 0:
UCSR0C |= (ucsz1 << UCSZ01) | (ucsz0 << UCSZ00);
break;
case 1:
UCSR1C |= (ucsz1 << UCSZ11) | (ucsz0 << UCSZ10);
break;
default:
return RSP_UNKOWN_PIN;
}
return RSP_OK;
}
void uart_parity_usb(char uartport, char parity)
{
answer[1] = (unsigned char)uart_databits(uartport, parity);
answer[2] = 0;
CommandAnswer(3);
}
char uart_parity(char uartport, char parity)
{
char upm1, upm0;
switch(parity)
{
case 'N': upm1 = 0; upm0 = 0; break;
case 'E': upm1 = 1; upm0 = 0; break;
case 'O': upm1 = 1; upm0 = 1; break;
default: upm1 = 0; upm0 = 0; break;
}
switch(uartport)
{
case 0:
UCSR0C |= (upm1 << UPM01) | (upm0 << UPM00);
break;
case 1:
UCSR1C |= (upm1 << UPM11) | (upm0 << UPM10);
break;
default:
return RSP_UNKOWN_PIN;
}
return RSP_OK;
}
void uart_send_usb(char uartport, char length, char *buf)
{
answer[1] = (unsigned char)uart_send(uartport, length, buf);
answer[2] = 0;
CommandAnswer(3);
}
char uart_send(char uartport, unsigned int length, char *buf)
{
if(uartport != 0 && uartport != 1)
return RSP_UNKOWN_PIN;
while(length--)
uart_putchar(uartport, *buf++);
return RSP_OK;
}
char uart_putchar(char uartport, char data)
{
switch(uartport)
{
case 0:
/* Wait for empty transmit buffer */
while (!(UCSR0A & (1 << UDRE0)));
/* Put data into buffer, sends the data */
UDR0 = data;
break;
case 1:
/* Wait for empty transmit buffer */
while (!(UCSR1A & (1 << UDRE1)));
/* Put data into buffer, sends the data */
UDR1 = data;
break;
default:
return RSP_UNKOWN_PIN;
}
return RSP_OK;
}
void uart_recv_usb(char uartport, int length)
{
char data[length];
int i;
answer[1] = (char)uart_recv(uartport, data, length);
for(i = 0; i < length; i++)
answer[2+i] = data[i];
answer[2+length] = 0;
CommandAnswer(3+length);
}
char uart_recv(char uartport, char * buf, int length)
{
if(uartport != 0 && uartport != 1)
return RSP_UNKOWN_PIN;
while(length-- > 0)
*buf++ = uart_getchar(uartport);
return RSP_OK;
}
char uart_getchar(char uartport)
{
char c;
switch(uartport)
{
case 0:
while (!(UCSR0A & (1 << RXC0)));
c = UDR0;
break;
case 1:
while (!(UCSR1A & (1 << RXC1)));
c = UDR1;
break;
default:
return RSP_UNKOWN_PIN;
}
return c;
}
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