1 | /** |
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2 | * @file |
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3 | * |
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4 | * @ingroup RTEMSBSPsARMLPC24XX |
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5 | * |
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6 | * @brief RTC configuration. |
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7 | */ |
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8 | |
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9 | /* |
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10 | * Copyright (c) 2008 embedded brains GmbH. All rights reserved. |
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11 | * The license and distribution terms for this file may be |
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12 | * found in the file LICENSE in this distribution or at |
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13 | * http://www.rtems.org/license/LICENSE. |
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14 | */ |
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15 | |
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16 | #include <libchip/rtc.h> |
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17 | |
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18 | #include <bsp/lpc24xx.h> |
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19 | #include <bsp/io.h> |
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20 | |
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21 | #define LPC24XX_RTC_NUMBER 1 |
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22 | |
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23 | static void lpc24xx_rtc_initialize(int minor) |
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24 | { |
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25 | /* Enable module power */ |
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26 | lpc24xx_module_enable(LPC24XX_MODULE_RTC, LPC24XX_MODULE_PCLK_DEFAULT); |
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27 | |
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28 | /* Enable the RTC and use external clock */ |
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29 | RTC_CCR = RTC_CCR_CLKEN | RTC_CCR_CLKSRC; |
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30 | |
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31 | /* Disable interrupts */ |
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32 | RTC_CIIR = 0; |
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33 | RTC_CISS = 0; |
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34 | RTC_AMR = 0xff; |
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35 | |
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36 | /* Clear interrupts */ |
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37 | RTC_ILR = RTC_ILR_RTCCIF | RTC_ILR_RTCALF | RTC_ILR_RTSSF; |
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38 | } |
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39 | |
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40 | static int lpc24xx_rtc_get_time(int minor, rtems_time_of_day *tod) |
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41 | { |
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42 | tod->ticks = 0; |
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43 | tod->second = RTC_SEC; |
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44 | tod->minute = RTC_MIN; |
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45 | tod->hour = RTC_HOUR; |
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46 | tod->day = RTC_DOM; |
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47 | tod->month = RTC_MONTH; |
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48 | tod->year = RTC_YEAR; |
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49 | |
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50 | return 0; |
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51 | } |
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52 | |
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53 | static int lpc24xx_rtc_set_time(int minor, const rtems_time_of_day *tod) |
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54 | { |
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55 | RTC_SEC = tod->second; |
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56 | RTC_MIN = tod->minute; |
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57 | RTC_HOUR = tod->hour; |
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58 | RTC_DOM = tod->day; |
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59 | RTC_MONTH = tod->month; |
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60 | RTC_YEAR = tod->year; |
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61 | |
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62 | return 0; |
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63 | } |
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64 | |
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65 | static bool lpc24xx_rtc_probe(int minor) |
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66 | { |
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67 | return true; |
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68 | } |
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69 | |
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70 | const rtc_fns lpc24xx_rtc_ops = { |
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71 | .deviceInitialize = lpc24xx_rtc_initialize, |
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72 | .deviceGetTime = lpc24xx_rtc_get_time, |
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73 | .deviceSetTime = lpc24xx_rtc_set_time |
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74 | }; |
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75 | |
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76 | size_t RTC_Count = LPC24XX_RTC_NUMBER; |
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77 | |
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78 | rtc_tbl RTC_Table [LPC24XX_RTC_NUMBER] = { |
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79 | { |
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80 | .sDeviceName = "/dev/rtc", |
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81 | .deviceType = RTC_CUSTOM, |
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82 | .pDeviceFns = &lpc24xx_rtc_ops, |
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83 | .deviceProbe = lpc24xx_rtc_probe, |
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84 | .pDeviceParams = NULL, |
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85 | .ulCtrlPort1 = 0, |
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86 | .ulDataPort = 0, |
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87 | .getRegister = NULL, |
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88 | .setRegister = NULL |
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89 | } |
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90 | }; |
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