blob: 1297d72d32f8263bacb6f7c815e2e701ff5cf477 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
/*
* rsbus.h
*
* Created on: 2014-4-26
* Author: Tuowen
*/
// DE RSOUT.RSPIN HIGH ENABLE
// RE LOW ENABLE -> ALWAYS ENABLE
// RECEIVE QUERY -> Conditional FNC call
// Process -> Output (Done in main program)
// SMCLK set to 4MHZ
#ifndef RSBUS_H_
#define RSBUS_H_
#include<msp430g2553.h>
#include"precomp.h"
// MAXIMUM length to be send
#define RS_MAX (14)
#define ST_BUSY (0x04)
#define ST_RUN (0x02)
#define ST_RES (0x01)
#define ST_REST (0x00)
// Switch the machine to a new state specified above
// This will shown on the network -> must call
#define SWITCH_STATE(STATE) (mac_stat[0]=STATE)
#define MSTATE (mac_stat[0])
// Changing the state value (unsigned char) ->
// Available indices 0,1,2
#define STATE(X) (mac_stat[X+1])
// Return current mac state
#define RETSTATE (rsbus_w(0,(unsigned char*)mac_stat,4))
// Start and Stop bits definition
// Every message sent that does not agree with it will be ignored
// Please avoid this pattern in STATE(X)
#define STBIT0 (0x5B)
#define STBIT1 (0xAD)
#define EDBIT0 (0xA4)
#define EDBIT1 (0x52)
// Receieve handler ->
// Received message and it's length
typedef void (*rshdlr)(unsigned char* msg,unsigned int len);
// RSBUS init function
// Setting up UART, DE pin, receieve handler
void rsbus_init(rshdlr);
// Send something to the rs422 bus
// Length must not exceeds RS_MAX
void rsbus_w(int,unsigned char*,unsigned int);
// Machine status -> change it to change the auto respond status
// 0 is reserved for machine state specification
// 1-3 used for mac_type specific state
// recommend using SWITCH_STATE & STATE
extern volatile unsigned char mac_stat[4];
#endif /* RSBUS_H_ */
|
