fixed drive strength
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targets/TARGET_Atmel/TARGET_SAM_CortexM0P/rtc_api.c@163:1d4c9d0af1e9, 2017-04-11 (annotated)
- Committer:
- cpadua
- Date:
- Tue Apr 11 20:39:24 2017 +0000
- Revision:
- 163:1d4c9d0af1e9
- Parent:
- 149:156823d33999
fixed i2c-api.c
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 15:a81a8d6c1dfe | 1 | /* mbed Microcontroller Library |
mbed_official | 15:a81a8d6c1dfe | 2 | * Copyright (c) 2006-2015 ARM Limited |
mbed_official | 15:a81a8d6c1dfe | 3 | * |
mbed_official | 15:a81a8d6c1dfe | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
mbed_official | 15:a81a8d6c1dfe | 5 | * you may not use this file except in compliance with the License. |
mbed_official | 15:a81a8d6c1dfe | 6 | * You may obtain a copy of the License at |
mbed_official | 15:a81a8d6c1dfe | 7 | * |
mbed_official | 15:a81a8d6c1dfe | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
mbed_official | 15:a81a8d6c1dfe | 9 | * |
mbed_official | 15:a81a8d6c1dfe | 10 | * Unless required by applicable law or agreed to in writing, software |
mbed_official | 15:a81a8d6c1dfe | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
mbed_official | 15:a81a8d6c1dfe | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
mbed_official | 15:a81a8d6c1dfe | 13 | * See the License for the specific language governing permissions and |
mbed_official | 15:a81a8d6c1dfe | 14 | * limitations under the License. |
mbed_official | 15:a81a8d6c1dfe | 15 | */ |
mbed_official | 15:a81a8d6c1dfe | 16 | #include "mbed_assert.h" |
mbed_official | 15:a81a8d6c1dfe | 17 | #include "rtc_api.h" |
mbed_official | 15:a81a8d6c1dfe | 18 | |
mbed_official | 15:a81a8d6c1dfe | 19 | #include "cmsis.h" |
mbed_official | 15:a81a8d6c1dfe | 20 | #include "system.h" |
mbed_official | 15:a81a8d6c1dfe | 21 | |
mbed_official | 15:a81a8d6c1dfe | 22 | #include "rtc_count.h" |
mbed_official | 15:a81a8d6c1dfe | 23 | |
mbed_official | 18:da299f395b9e | 24 | #if !defined(RTC_CLOCK_SOURCE) |
mbed_official | 18:da299f395b9e | 25 | # warning RTC_CLOCK_SOURCE is not defined, assuming RTC_CLOCK_SELECTION_ULP1K. |
mbed_official | 18:da299f395b9e | 26 | # define RTC_CLOCK_SOURCE RTC_CLOCK_SELECTION_ULP1K |
mbed_official | 18:da299f395b9e | 27 | #endif |
mbed_official | 18:da299f395b9e | 28 | |
mbed_official | 15:a81a8d6c1dfe | 29 | /* Global RTC instance*/ |
mbed_official | 15:a81a8d6c1dfe | 30 | static struct rtc_module rtc_instance; |
mbed_official | 15:a81a8d6c1dfe | 31 | |
mbed_official | 15:a81a8d6c1dfe | 32 | static int rtc_inited = 0; |
mbed_official | 15:a81a8d6c1dfe | 33 | |
mbed_official | 15:a81a8d6c1dfe | 34 | /* Extern variables */ |
mbed_official | 15:a81a8d6c1dfe | 35 | extern uint8_t g_sys_init; |
mbed_official | 15:a81a8d6c1dfe | 36 | |
mbed_official | 15:a81a8d6c1dfe | 37 | /** Initialize the RTC |
mbed_official | 15:a81a8d6c1dfe | 38 | * |
mbed_official | 15:a81a8d6c1dfe | 39 | * Initialize the RTC with default time |
mbed_official | 15:a81a8d6c1dfe | 40 | * @param[void] void |
mbed_official | 15:a81a8d6c1dfe | 41 | */ |
mbed_official | 15:a81a8d6c1dfe | 42 | void rtc_init(void) |
mbed_official | 15:a81a8d6c1dfe | 43 | { |
mbed_official | 15:a81a8d6c1dfe | 44 | if (g_sys_init == 0) { |
mbed_official | 15:a81a8d6c1dfe | 45 | system_init(); |
mbed_official | 15:a81a8d6c1dfe | 46 | g_sys_init = 1; |
mbed_official | 15:a81a8d6c1dfe | 47 | } |
mbed_official | 15:a81a8d6c1dfe | 48 | |
mbed_official | 15:a81a8d6c1dfe | 49 | struct rtc_count_config config_rtc_count; |
mbed_official | 15:a81a8d6c1dfe | 50 | |
mbed_official | 15:a81a8d6c1dfe | 51 | rtc_count_get_config_defaults(&config_rtc_count); |
mbed_official | 15:a81a8d6c1dfe | 52 | |
mbed_official | 15:a81a8d6c1dfe | 53 | config_rtc_count.prescaler = RTC_COUNT_PRESCALER_DIV_1024; |
mbed_official | 15:a81a8d6c1dfe | 54 | config_rtc_count.mode = RTC_COUNT_MODE_32BIT; |
mbed_official | 15:a81a8d6c1dfe | 55 | #ifdef FEATURE_RTC_CONTINUOUSLY_UPDATED |
mbed_official | 15:a81a8d6c1dfe | 56 | config_rtc_count.continuously_update = true; |
mbed_official | 15:a81a8d6c1dfe | 57 | #endif |
mbed_official | 15:a81a8d6c1dfe | 58 | |
mbed_official | 15:a81a8d6c1dfe | 59 | rtc_count_init(&rtc_instance, RTC, &config_rtc_count); |
mbed_official | 15:a81a8d6c1dfe | 60 | |
mbed_official | 15:a81a8d6c1dfe | 61 | rtc_count_enable(&rtc_instance); |
mbed_official | 15:a81a8d6c1dfe | 62 | rtc_inited = 1; |
mbed_official | 15:a81a8d6c1dfe | 63 | } |
mbed_official | 15:a81a8d6c1dfe | 64 | |
mbed_official | 15:a81a8d6c1dfe | 65 | /** Frees the RTC |
mbed_official | 15:a81a8d6c1dfe | 66 | * |
mbed_official | 15:a81a8d6c1dfe | 67 | * @param[void] void |
mbed_official | 15:a81a8d6c1dfe | 68 | */ |
mbed_official | 15:a81a8d6c1dfe | 69 | void rtc_free(void) |
mbed_official | 15:a81a8d6c1dfe | 70 | { |
mbed_official | 15:a81a8d6c1dfe | 71 | if (rtc_inited) { |
mbed_official | 15:a81a8d6c1dfe | 72 | /* Disable the RTC module */ |
mbed_official | 15:a81a8d6c1dfe | 73 | rtc_count_disable(&rtc_instance); |
mbed_official | 15:a81a8d6c1dfe | 74 | /* Disable the RTC clock */ |
mbed_official | 18:da299f395b9e | 75 | #if (SAMD21) || (SAMR21) |
mbed_official | 15:a81a8d6c1dfe | 76 | system_gclk_chan_disable(RTC_GCLK_ID); |
mbed_official | 18:da299f395b9e | 77 | #elif (SAML21) |
mbed_official | 18:da299f395b9e | 78 | system_gclk_chan_disable(RTC_CLOCK_SOURCE); |
mbed_official | 18:da299f395b9e | 79 | #endif |
mbed_official | 15:a81a8d6c1dfe | 80 | rtc_inited = 0; |
mbed_official | 15:a81a8d6c1dfe | 81 | } |
mbed_official | 15:a81a8d6c1dfe | 82 | } |
mbed_official | 15:a81a8d6c1dfe | 83 | |
mbed_official | 15:a81a8d6c1dfe | 84 | /** Checks whether RTC is enabled or not |
mbed_official | 15:a81a8d6c1dfe | 85 | * |
mbed_official | 15:a81a8d6c1dfe | 86 | * To check whether RTC module is enabled or not |
mbed_official | 15:a81a8d6c1dfe | 87 | * @param[void] void |
mbed_official | 15:a81a8d6c1dfe | 88 | * @return Non zero if RTC is already enabled, else zero |
mbed_official | 15:a81a8d6c1dfe | 89 | */ |
mbed_official | 15:a81a8d6c1dfe | 90 | int rtc_isenabled(void) |
mbed_official | 15:a81a8d6c1dfe | 91 | { |
mbed_official | 15:a81a8d6c1dfe | 92 | return rtc_inited; |
mbed_official | 15:a81a8d6c1dfe | 93 | } |
mbed_official | 15:a81a8d6c1dfe | 94 | |
mbed_official | 15:a81a8d6c1dfe | 95 | /** Reads the RTC value |
mbed_official | 15:a81a8d6c1dfe | 96 | * |
mbed_official | 15:a81a8d6c1dfe | 97 | * Reads and return the current time in RTC |
mbed_official | 15:a81a8d6c1dfe | 98 | * @param[void] void |
mbed_official | 15:a81a8d6c1dfe | 99 | * @return the current value in RTC |
mbed_official | 15:a81a8d6c1dfe | 100 | */ |
mbed_official | 15:a81a8d6c1dfe | 101 | time_t rtc_read(void) |
mbed_official | 15:a81a8d6c1dfe | 102 | { |
mbed_official | 15:a81a8d6c1dfe | 103 | if (!rtc_inited) { |
mbed_official | 15:a81a8d6c1dfe | 104 | /* Return invalid time for now! */ |
mbed_official | 15:a81a8d6c1dfe | 105 | return 0; |
mbed_official | 15:a81a8d6c1dfe | 106 | } |
mbed_official | 15:a81a8d6c1dfe | 107 | return (time_t)rtc_count_get_count(&rtc_instance); |
mbed_official | 15:a81a8d6c1dfe | 108 | } |
mbed_official | 15:a81a8d6c1dfe | 109 | |
mbed_official | 15:a81a8d6c1dfe | 110 | /** Write the RTC value |
mbed_official | 15:a81a8d6c1dfe | 111 | * |
mbed_official | 15:a81a8d6c1dfe | 112 | * Update the time value in RTC |
mbed_official | 15:a81a8d6c1dfe | 113 | * @param[in] t The time value to be written |
mbed_official | 15:a81a8d6c1dfe | 114 | * @return void |
mbed_official | 15:a81a8d6c1dfe | 115 | */ |
mbed_official | 15:a81a8d6c1dfe | 116 | void rtc_write(time_t t) |
mbed_official | 15:a81a8d6c1dfe | 117 | { |
mbed_official | 15:a81a8d6c1dfe | 118 | if (!rtc_inited) { |
mbed_official | 15:a81a8d6c1dfe | 119 | /* Initialize the RTC is not yet initialized */ |
mbed_official | 15:a81a8d6c1dfe | 120 | rtc_init(); |
mbed_official | 15:a81a8d6c1dfe | 121 | } |
mbed_official | 15:a81a8d6c1dfe | 122 | |
mbed_official | 15:a81a8d6c1dfe | 123 | uint32_t count_value = (uint32_t)t; |
mbed_official | 15:a81a8d6c1dfe | 124 | rtc_count_set_count(&rtc_instance, count_value); |
mbed_official | 64:41a834223ea3 | 125 | } |