1 | /*===============================================================*\ |
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2 | | Project: display driver for HCMS29xx | |
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3 | +-----------------------------------------------------------------+ |
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4 | | File: disp_hcms29xx.h | |
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5 | +-----------------------------------------------------------------+ |
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6 | | Copyright (c) 2008 | |
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7 | | Embedded Brains GmbH | |
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8 | | Obere Lagerstr. 30 | |
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9 | | D-82178 Puchheim | |
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10 | | Germany | |
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11 | | rtems@embedded-brains.de | |
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12 | +-----------------------------------------------------------------+ |
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13 | | The license and distribution terms for this file may be | |
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14 | | found in the file LICENSE in this distribution or at | |
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15 | | | |
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16 | | http://www.rtems.com/license/LICENSE. | |
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17 | | | |
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18 | +-----------------------------------------------------------------+ |
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19 | | this file declares the SPI based driver for a HCMS29xx 4 digit | |
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20 | | alphanumeric LED display | |
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21 | +-----------------------------------------------------------------+ |
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22 | | $Id$ |
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23 | \*===============================================================*/ |
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24 | #ifndef _DISP_HCMS29XX_H |
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25 | #define _DISP_HCMS29XX_H |
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26 | #include <rtems.h> |
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27 | #include <time.h> |
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28 | |
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29 | #ifdef __cplusplus |
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30 | extern "C" { |
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31 | #endif |
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32 | #define DISP_HCMS29XX_TEXT_CNT (128) |
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33 | |
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34 | typedef struct { |
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35 | rtems_device_major_number minor; /* minor device number */ |
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36 | /* |
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37 | * in the disp_buffer, the string to be displayed is placed |
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38 | */ |
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39 | char disp_buffer[DISP_HCMS29XX_TEXT_CNT]; |
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40 | int disp_buf_cnt; /* number of valid chars in disp_buffer */ |
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41 | /* |
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42 | * in the trns buffer the string is transfered to display task |
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43 | */ |
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44 | char trns_buffer[DISP_HCMS29XX_TEXT_CNT]; |
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45 | /* |
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46 | * in the dev_buffer, characters will be accumulated before display... |
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47 | */ |
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48 | char dev_buffer[DISP_HCMS29XX_TEXT_CNT]; |
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49 | int dev_buf_cnt; /* number of valid chars in dev_buffer */ |
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50 | |
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51 | rtems_id trns_sema_id; /* ID of disp trns buffer sema */ |
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52 | rtems_id task_id; /* ID of disp task */ |
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53 | bool rotate; /* FLAG: display is upside down */ |
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54 | } spi_disp_hcms29xx_param_t; |
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55 | |
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56 | typedef struct { |
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57 | rtems_libi2c_drv_t libi2c_drv_entry; |
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58 | spi_disp_hcms29xx_param_t disp_param; |
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59 | } disp_hcms29xx_drv_t; |
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60 | /* |
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61 | * pass this descriptor pointer to rtems_libi2c_register_drv |
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62 | */ |
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63 | extern rtems_libi2c_drv_t *disp_hcms29xx__driver_descriptor; |
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64 | |
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65 | #ifdef __cplusplus |
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66 | } |
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67 | #endif |
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68 | |
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69 | #endif /* _DISP_HCMS29XX_H */ |
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