5
Last change
on this file since 1c6926c1 was
c499856,
checked in by Chris Johns <chrisj@…>, on 03/20/14 at 21:10:47
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Change all references of rtems.com to rtems.org.
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-
Property mode set to
100644
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File size:
1.9 KB
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1 | /* not yet implemented */ |
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2 | |
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3 | /* |
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4 | * RTEMS driver for Blackfin TWI (I2C) |
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5 | * |
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6 | * COPYRIGHT (c) 2008 Kallisti Labs, Los Gatos, CA, USA |
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7 | * written by Allan Hessenflow <allanh@kallisti.com> |
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8 | * |
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9 | * The license and distribution terms for this file may be |
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10 | * found in the file LICENSE in this distribution or at |
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11 | * http://www.rtems.org/license/LICENSE. |
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12 | */ |
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13 | |
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14 | #ifndef _twi_h_ |
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15 | #define _twi_h_ |
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16 | |
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17 | |
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18 | #ifdef __cplusplus |
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19 | extern "C" { |
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20 | #endif |
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21 | |
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22 | |
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23 | typedef struct { |
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24 | uint32_t sclk; |
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25 | void *base; |
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26 | bool fast; |
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27 | int8_t slave_address; |
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28 | } bfin_twi_config_t; |
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29 | |
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30 | typedef struct bfin_twi_request_s { |
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31 | bool write; |
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32 | int count; |
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33 | void *data; |
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34 | /* Chained requests are done with repeated start conditions in between. |
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35 | These are useful for atomic address write/data read transactions |
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36 | (which can be important in multi-master configurations), and for |
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37 | doing 10-bit addressing. */ |
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38 | struct bfin_twi_request_s *next; |
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39 | } bfin_twi_request_t; |
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40 | |
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41 | typedef rtems_status_code (*bfin_twi_callback_t)(int channel, |
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42 | void *arg, |
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43 | bool general_call, |
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44 | bool write, |
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45 | bool done, |
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46 | int read_count, |
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47 | uint8_t *data); |
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48 | |
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49 | |
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50 | rtems_status_code bfin_twi_init(int channel, bfin_twi_config_t *config); |
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51 | |
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52 | rtems_status_code bfin_twi_register_callback(int channel, |
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53 | bfin_twi_callback_t callback, |
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54 | void *arg); |
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55 | |
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56 | void bfin_twi_isr(int source); |
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57 | |
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58 | rtems_status_code bfin_twi_request(int channel, uint8_t address, |
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59 | bfin_twi_request_t *request, |
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60 | rtems_interval timeout); |
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61 | |
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62 | |
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63 | #ifdef __cplusplus |
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64 | } |
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65 | #endif |
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66 | |
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67 | #endif /* _twi_h_ */ |
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68 | |
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