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[/] [light52/] [trunk/] [tools/] [b51/] [src/] [b51_mcu.c] - Blame information for rev 24

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#include <stdio.h>
 
#include "b51_mcu.h"
#include "b51_log.h"
 
/*-- Private data & data types -----------------------------------------------*/
 
 
/*-- Public functions --------------------------------------------------------*/
 
extern void mcu_init(mcu51_t *mcu){
}
 
extern void mcu_reset(mcu51_t *mcu){
    uint32_t i;
 
    for(i=0;i<NUM_IRQS;i++){
        mcu->irq_countdown[i] = 0;
    }
}
 
extern void mcu_update(mcu51_t *mcu, uint32_t states){
    uint32_t i;
 
    for(i=0;i<NUM_IRQS;i++){
        if(mcu->irq_countdown[i] > 0){
            mcu->irq_countdown[i]--;
 
            if(mcu->irq_countdown[i] == 0){
                switch(i){
                case 0:     /* FIXME external irq 0 unimplemented */
                    break;
                case 1:     /* FIXME Timer 0 irq unimplemented */
                    break;
                case 2:     /* FIXME external irq 1 unimplemented */
                    break;
                case 3:     /* FIXME Timer 1 irq unimplemented */
                    break;
                case 4:     /* Serial port irq */
                    mcu->sfr.scon |= 0x030; /* FIXME Tx and Rx interrupts */
                    break;
                default:    /* BUG! wrong index */
                    ;
                }
            }
        };
    }
}
 
 
extern uint16_t mcu_set_sfr(mcu51_t *mcu, uint8_t dir, uint8_t value){
 
    if(dir < 0x80) return 0xffff;
 
    switch(dir){
    case 0x80:  /* P0 */
        mcu->sfr.p0 = value;
        break;
    case 0x90:  /* P1 */
        mcu->sfr.p1 = value;
        break;
    case 0xa0:  /* P2 */
        mcu->sfr.p2 = value;
        break;
    case 0xb0:  /* P3 */
        mcu->sfr.p3 = value;
        break;
    case 0x87:  /* PCON */
        mcu->sfr.pcon = value;
        break;
    case 0x99:  /* SBUF */
        mcu->sfr.sbuf = value;
        log_con_output((char)value);
        /* Simulate a TI interrupt after 4 instruction cycles, arbitrarily */
        /* FIXME UAR simulation is in bare bones */
        //mcu->irq_countdown[4] = 4;
        break;
    case 0x98:  /* SCON */
        mcu->sfr.scon = value;
        break;
    case 0x88:  /* TCON */
        mcu->sfr.tcon = value;
        break;
    case 0x89:  /* TMOD */
        mcu->sfr.tmod = value;
        break;
    case 0x8c:  /* TH0 */
        mcu->sfr.th0 = value;
        break;
    case 0x8d:  /* TH1 */
        mcu->sfr.th1 = value;
        break;
    case 0x8a:  /* TL0 */
        mcu->sfr.tl0 = value;
        break;
    case 0x8b:  /* TL1 */
        mcu->sfr.tl1 = value;
        break;
    default:
        /* For undefined SFRs, return 0xffff */
        return (uint16_t)0xffff;
    }
 
    return 0;
}
 
extern uint16_t mcu_get_sfr(mcu51_t *mcu, uint8_t dir){
 
    if(dir < 0x80) return 0xffff;
 
    switch(dir){
    case 0x80:  /* P0 */
        return (uint16_t)mcu->sfr.p0;
        break;
    case 0x90:  /* P1 */
        return (uint16_t)mcu->sfr.p1;
        break;
    case 0xa0:  /* P2 */
        return (uint16_t)mcu->sfr.p2;
        break;
    case 0xb0:  /* P3 */
        return (uint16_t)mcu->sfr.p3;
        break;
    case 0x87:  /* PCON */
        return (uint16_t)mcu->sfr.pcon;
        break;
    case 0x99:  /* SBUF */
        return (uint16_t)mcu->sfr.sbuf;
        break;
    case 0x98:  /* SCON */
        return (uint16_t)mcu->sfr.scon | 0x030;
        break;
    case 0x88:  /* TCON */
        return (uint16_t)mcu->sfr.tcon;
        break;
    case 0x89:  /* TMOD */
        return (uint16_t)mcu->sfr.tmod;
        break;
    case 0x8c:  /* TH0 */
        return (uint16_t)mcu->sfr.th0;
        break;
    case 0x8d:  /* TH1 */
        return (uint16_t)mcu->sfr.th1;
        break;
    case 0x8a:  /* TL0 */
        return (uint16_t)mcu->sfr.tl0;
        break;
    case 0x8b:  /* TL1 */
        return (uint16_t)mcu->sfr.tl1;
        break;
    default:
        /* IIF the SFR is undefined we return a 16-bit-wide 0xffff */
        return (uint16_t)0xffff;
    }
}

Line No.	Rev	Author	Line
1	4	ja_rd
2			`#include <stdio.h>`
3
4			`#include "b51_mcu.h"`
5			`#include "b51_log.h"`
6
7			`/-- Private data & data types -----------------------------------------------/`
8
9
10			`/-- Public functions --------------------------------------------------------/`
11
12			`extern void mcu_init(mcu51_t *mcu){`
13			`}`
14
15			`extern void mcu_reset(mcu51_t *mcu){`
16			`uint32_t i;`
17
18			`for(i=0;i<NUM_IRQS;i++){`
19			`mcu->irq_countdown[i] = 0;`
20			`}`
21			`}`
22
23			`extern void mcu_update(mcu51_t *mcu, uint32_t states){`
24			`uint32_t i;`
25
26			`for(i=0;i<NUM_IRQS;i++){`
27			`if(mcu->irq_countdown[i] > 0){`
28			`mcu->irq_countdown[i]--;`
29
30			`if(mcu->irq_countdown[i] == 0){`
31			`switch(i){`
32			`case 0: /* FIXME external irq 0 unimplemented */`
33			`break;`
34			`case 1: /* FIXME Timer 0 irq unimplemented */`
35			`break;`
36			`case 2: /* FIXME external irq 1 unimplemented */`
37			`break;`
38			`case 3: /* FIXME Timer 1 irq unimplemented */`
39			`break;`
40			`case 4: /* Serial port irq */`
41			`mcu->sfr.scon \|= 0x030; /* FIXME Tx and Rx interrupts */`
42			`break;`
43			`default: /* BUG! wrong index */`
44			`;`
45			`}`
46			`}`
47			`};`
48			`}`
49			`}`
50
51
52			`extern uint16_t mcu_set_sfr(mcu51_t *mcu, uint8_t dir, uint8_t value){`
53
54			`if(dir < 0x80) return 0xffff;`
55
56			`switch(dir){`
57			`case 0x80: /* P0 */`
58			`mcu->sfr.p0 = value;`
59			`break;`
60			`case 0x90: /* P1 */`
61			`mcu->sfr.p1 = value;`
62			`break;`
63			`case 0xa0: /* P2 */`
64			`mcu->sfr.p2 = value;`
65			`break;`
66			`case 0xb0: /* P3 */`
67			`mcu->sfr.p3 = value;`
68			`break;`
69			`case 0x87: /* PCON */`
70			`mcu->sfr.pcon = value;`
71			`break;`
72			`case 0x99: /* SBUF */`
73			`mcu->sfr.sbuf = value;`
74			`log_con_output((char)value);`
75			`/* Simulate a TI interrupt after 4 instruction cycles, arbitrarily */`
76			`/* FIXME UAR simulation is in bare bones */`
77			`//mcu->irq_countdown[4] = 4;`
78			`break;`
79			`case 0x98: /* SCON */`
80			`mcu->sfr.scon = value;`
81			`break;`
82			`case 0x88: /* TCON */`
83			`mcu->sfr.tcon = value;`
84			`break;`
85			`case 0x89: /* TMOD */`
86			`mcu->sfr.tmod = value;`
87			`break;`
88			`case 0x8c: /* TH0 */`
89			`mcu->sfr.th0 = value;`
90			`break;`
91			`case 0x8d: /* TH1 */`
92			`mcu->sfr.th1 = value;`
93			`break;`
94			`case 0x8a: /* TL0 */`
95			`mcu->sfr.tl0 = value;`
96			`break;`
97			`case 0x8b: /* TL1 */`
98			`mcu->sfr.tl1 = value;`
99			`break;`
100			`default:`
101			`/* For undefined SFRs, return 0xffff */`
102			`return (uint16_t)0xffff;`
103			`}`
104
105			`return 0;`
106			`}`
107
108			`extern uint16_t mcu_get_sfr(mcu51_t *mcu, uint8_t dir){`
109
110			`if(dir < 0x80) return 0xffff;`
111
112			`switch(dir){`
113			`case 0x80: /* P0 */`
114			`return (uint16_t)mcu->sfr.p0;`
115			`break;`
116			`case 0x90: /* P1 */`
117			`return (uint16_t)mcu->sfr.p1;`
118			`break;`
119			`case 0xa0: /* P2 */`
120			`return (uint16_t)mcu->sfr.p2;`
121			`break;`
122			`case 0xb0: /* P3 */`
123			`return (uint16_t)mcu->sfr.p3;`
124			`break;`
125			`case 0x87: /* PCON */`
126			`return (uint16_t)mcu->sfr.pcon;`
127			`break;`
128			`case 0x99: /* SBUF */`
129			`return (uint16_t)mcu->sfr.sbuf;`
130			`break;`
131			`case 0x98: /* SCON */`
132			`return (uint16_t)mcu->sfr.scon \| 0x030;`
133			`break;`
134			`case 0x88: /* TCON */`
135			`return (uint16_t)mcu->sfr.tcon;`
136			`break;`
137			`case 0x89: /* TMOD */`
138			`return (uint16_t)mcu->sfr.tmod;`
139			`break;`
140			`case 0x8c: /* TH0 */`
141			`return (uint16_t)mcu->sfr.th0;`
142			`break;`
143			`case 0x8d: /* TH1 */`
144			`return (uint16_t)mcu->sfr.th1;`
145			`break;`
146			`case 0x8a: /* TL0 */`
147			`return (uint16_t)mcu->sfr.tl0;`
148			`break;`
149			`case 0x8b: /* TL1 */`
150			`return (uint16_t)mcu->sfr.tl1;`
151			`break;`
152			`default:`
153			`/* IIF the SFR is undefined we return a 16-bit-wide 0xffff */`
154			`return (uint16_t)0xffff;`
155			`}`
156			`}`

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[/] [light52/] [trunk/] [tools/] [b51/] [src/] [b51_mcu.c] - Blame information for rev 24