4.104.114.84.95
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1 | /* |
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2 | * C4X IO Information |
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3 | * |
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4 | * $Id$ |
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5 | */ |
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6 | |
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7 | #ifndef __C4XIO_h |
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8 | #define __C4XIO_h |
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9 | |
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10 | /* |
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11 | * The following section of C4x timer code is based on C40 specific |
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12 | * timer code from Ran Cabell <rcabell@norfolk.infi.net>. The |
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13 | * only C3x/C4x difference spotted was the address of the timer. |
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14 | * The names have been changed to be more RTEMS like. |
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15 | */ |
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16 | |
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17 | struct c4x_timer { |
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18 | volatile int tcontrol; |
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19 | volatile int r1[3]; |
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20 | volatile int tcounter; |
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21 | volatile int r2[3]; |
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22 | volatile int tperiod; |
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23 | }; |
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24 | |
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25 | #ifdef _TMS320C40 |
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26 | #define C4X_TIMER_0 ((struct c4x_timer*)0x100020) |
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27 | #else |
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28 | #define C4X_TIMER_0 ((struct c4x_timer*)0x808020) |
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29 | #define C4X_TIMER_1 ((struct c4x_timer*)0x808030) |
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30 | #endif |
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31 | |
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32 | #define c4x_timer_start( _timer ) \ |
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33 | _timer->tcontrol=0x02c1 |
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34 | |
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35 | #define c4x_timer_stop( _timer ) _timer->tcontrol = 0 |
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36 | |
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37 | #define c4x_timer_get_counter( _timer ) (volatile int)(_timer->tcounter) |
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38 | |
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39 | #define c4x_timer_set_counter( _timer, _value ) \ |
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40 | do { \ |
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41 | (volatile int)(_timer->tcounter) = _value; \ |
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42 | } while (0); |
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43 | |
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44 | #define c4x_timer_get_period( _timer ) (volatile int)(_timer->tperiod) |
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45 | |
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46 | #define c4x_timer_set_period( _timer, _value ) \ |
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47 | do { \ |
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48 | (volatile int)(_timer->tperiod) = _value; \ |
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49 | } while (0); |
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50 | |
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51 | #endif |
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52 | /* end if include file */ |
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