#include "motorola.h"
#include "output.h"
#include "serial.h"
+#include "s88.h"
volatile uint8_t recv_buf[32];
uint8_t recv_head = 0;
uint8_t recv_tail = 0;
volatile uint8_t recv_fill = 0;
volatile uint8_t recv_overrun = 0;
-uint8_t cmd_buf[15];
-uint8_t cmd_length;
void process_commands(void);
-uint8_t process_command(void);
+uint8_t dispatch_command(const uint8_t *, uint8_t);
void interface_init(void)
{
{
if(recv_overrun)
{
- serial_write(0xFE);
- serial_write(RECEIVE_OVERRUN);
+ interface_send1(RECEIVE_OVERRUN);
recv_overrun = 0;
}
if(recv_fill>0)
{
while(recv_fill>0)
{
- uint8_t consumed;
- uint8_t c = recv_buf[recv_tail];
+ uint8_t cmd[15];
+ uint8_t length = ~recv_buf[recv_tail];
- cmd_length = 0;
-
- if(c>=0xF0)
+ if(length<0x10)
{
- cmd_length = ~c;
- if(recv_fill<=cmd_length)
+ if(recv_fill<=length)
break;
uint8_t i, j;
- for(i=0, j=recv_tail+1; i<cmd_length; ++i, ++j)
+ for(i=0, j=recv_tail+1; i<length; ++i, ++j)
{
if(j>=sizeof(recv_buf))
j = 0;
- cmd_buf[i] = recv_buf[j];
+ cmd[i] = recv_buf[j];
}
-
- consumed = 1+cmd_length;
}
else
{
- serial_write(0xFE);
- serial_write(FRAMING_ERROR);
- consumed = 1;
+ length = 0;
+ interface_send1(FRAMING_ERROR);
}
- recv_tail += consumed;
+ recv_tail += length+1;
if(recv_tail>=sizeof(recv_buf))
recv_tail -= sizeof(recv_buf);
- recv_fill -= consumed;
+ recv_fill -= length+1;
- if(cmd_length>0)
+ if(length>0)
{
- uint8_t result = process_command();
- serial_write(0xFE);
- serial_write(result);
+ uint8_t result = dispatch_command(cmd, length);
+ interface_send1(result);
}
}
}
-uint8_t process_command(void)
+uint8_t dispatch_command(const uint8_t *cmd, uint8_t length)
{
- uint8_t type = cmd_buf[0]>>4;
+ uint8_t type = cmd[0]>>4;
if(type==0)
{
- uint8_t subtype = (cmd_buf[0]>>3)&1;
+ uint8_t subtype = (cmd[0]>>3)&1;
if(subtype==0)
- return output_command();
+ return output_command(cmd, length);
else
- return monitor_command();
+ return monitor_command(cmd, length);
}
else if(type==1)
- return motorola_command();
+ return motorola_command(cmd, length);
+ else if(type==3)
+ return s88_command(cmd, length);
else
return INVALID_COMMAND;
}
+void interface_send(const uint8_t *cmd, uint8_t length)
+{
+ uint8_t i;
+
+ serial_write(~length);
+ for(i=0; i<length; ++i)
+ serial_write(cmd[i]);
+}
+
+void interface_send1(uint8_t cmd)
+{
+ serial_write(0xFE);
+ serial_write(cmd);
+}
+
static inline void receive(uint8_t c)
{
if(recv_fill>=sizeof(recv_buf))