MacroRat / MouseCode

Mouse code for the MacroRat

Dependencies:   ITG3200 QEI

mbed-dev/targets/TARGET_Atmel/TARGET_SAM_CortexM0P/rtc_api.c@46:b156ef445742, 2017-06-03 (annotated)

Committer:
sahilmgandhi
Date:
Sat Jun 03 00:22:44 2017 +0000
Revision:
46:b156ef445742
Parent:
18:6a4db94011d3 
Final code for internal battlebot competition.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sahilmgandhi 18:6a4db94011d3 1 /* mbed Microcontroller Library
sahilmgandhi 18:6a4db94011d3 2 * Copyright (c) 2006-2015 ARM Limited
sahilmgandhi 18:6a4db94011d3 3 *
sahilmgandhi 18:6a4db94011d3 4 * Licensed under the Apache License, Version 2.0 (the "License");
sahilmgandhi 18:6a4db94011d3 5 * you may not use this file except in compliance with the License.
sahilmgandhi 18:6a4db94011d3 6 * You may obtain a copy of the License at
sahilmgandhi 18:6a4db94011d3 7 *
sahilmgandhi 18:6a4db94011d3 8 * http://www.apache.org/licenses/LICENSE-2.0
sahilmgandhi 18:6a4db94011d3 9 *
sahilmgandhi 18:6a4db94011d3 10 * Unless required by applicable law or agreed to in writing, software
sahilmgandhi 18:6a4db94011d3 11 * distributed under the License is distributed on an "AS IS" BASIS,
sahilmgandhi 18:6a4db94011d3 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
sahilmgandhi 18:6a4db94011d3 13 * See the License for the specific language governing permissions and
sahilmgandhi 18:6a4db94011d3 14 * limitations under the License.
sahilmgandhi 18:6a4db94011d3 15 */
sahilmgandhi 18:6a4db94011d3 16 #include "mbed_assert.h"
sahilmgandhi 18:6a4db94011d3 17 #include "rtc_api.h"
sahilmgandhi 18:6a4db94011d3 18
sahilmgandhi 18:6a4db94011d3 19 #include "cmsis.h"
sahilmgandhi 18:6a4db94011d3 20 #include "system.h"
sahilmgandhi 18:6a4db94011d3 21
sahilmgandhi 18:6a4db94011d3 22 #include "rtc_count.h"
sahilmgandhi 18:6a4db94011d3 23
sahilmgandhi 18:6a4db94011d3 24 #if !defined(RTC_CLOCK_SOURCE)
sahilmgandhi 18:6a4db94011d3 25 # warning RTC_CLOCK_SOURCE is not defined, assuming RTC_CLOCK_SELECTION_ULP1K.
sahilmgandhi 18:6a4db94011d3 26 # define RTC_CLOCK_SOURCE RTC_CLOCK_SELECTION_ULP1K
sahilmgandhi 18:6a4db94011d3 27 #endif
sahilmgandhi 18:6a4db94011d3 28
sahilmgandhi 18:6a4db94011d3 29 /* Global RTC instance*/
sahilmgandhi 18:6a4db94011d3 30 static struct rtc_module rtc_instance;
sahilmgandhi 18:6a4db94011d3 31
sahilmgandhi 18:6a4db94011d3 32 static int rtc_inited = 0;
sahilmgandhi 18:6a4db94011d3 33
sahilmgandhi 18:6a4db94011d3 34 /* Extern variables */
sahilmgandhi 18:6a4db94011d3 35 extern uint8_t g_sys_init;
sahilmgandhi 18:6a4db94011d3 36
sahilmgandhi 18:6a4db94011d3 37 /** Initialize the RTC
sahilmgandhi 18:6a4db94011d3 38 *
sahilmgandhi 18:6a4db94011d3 39 * Initialize the RTC with default time
sahilmgandhi 18:6a4db94011d3 40 * @param[void] void
sahilmgandhi 18:6a4db94011d3 41 */
sahilmgandhi 18:6a4db94011d3 42 void rtc_init(void)
sahilmgandhi 18:6a4db94011d3 43 {
sahilmgandhi 18:6a4db94011d3 44 if (g_sys_init == 0) {
sahilmgandhi 18:6a4db94011d3 45 system_init();
sahilmgandhi 18:6a4db94011d3 46 g_sys_init = 1;
sahilmgandhi 18:6a4db94011d3 47 }
sahilmgandhi 18:6a4db94011d3 48
sahilmgandhi 18:6a4db94011d3 49 struct rtc_count_config config_rtc_count;
sahilmgandhi 18:6a4db94011d3 50
sahilmgandhi 18:6a4db94011d3 51 rtc_count_get_config_defaults(&config_rtc_count);
sahilmgandhi 18:6a4db94011d3 52
sahilmgandhi 18:6a4db94011d3 53 config_rtc_count.prescaler = RTC_COUNT_PRESCALER_DIV_1024;
sahilmgandhi 18:6a4db94011d3 54 config_rtc_count.mode = RTC_COUNT_MODE_32BIT;
sahilmgandhi 18:6a4db94011d3 55 #ifdef FEATURE_RTC_CONTINUOUSLY_UPDATED
sahilmgandhi 18:6a4db94011d3 56 config_rtc_count.continuously_update = true;
sahilmgandhi 18:6a4db94011d3 57 #endif
sahilmgandhi 18:6a4db94011d3 58
sahilmgandhi 18:6a4db94011d3 59 rtc_count_init(&rtc_instance, RTC, &config_rtc_count);
sahilmgandhi 18:6a4db94011d3 60
sahilmgandhi 18:6a4db94011d3 61 rtc_count_enable(&rtc_instance);
sahilmgandhi 18:6a4db94011d3 62 rtc_inited = 1;
sahilmgandhi 18:6a4db94011d3 63 }
sahilmgandhi 18:6a4db94011d3 64
sahilmgandhi 18:6a4db94011d3 65 /** Frees the RTC
sahilmgandhi 18:6a4db94011d3 66 *
sahilmgandhi 18:6a4db94011d3 67 * @param[void] void
sahilmgandhi 18:6a4db94011d3 68 */
sahilmgandhi 18:6a4db94011d3 69 void rtc_free(void)
sahilmgandhi 18:6a4db94011d3 70 {
sahilmgandhi 18:6a4db94011d3 71 if (rtc_inited) {
sahilmgandhi 18:6a4db94011d3 72 /* Disable the RTC module */
sahilmgandhi 18:6a4db94011d3 73 rtc_count_disable(&rtc_instance);
sahilmgandhi 18:6a4db94011d3 74 /* Disable the RTC clock */
sahilmgandhi 18:6a4db94011d3 75 #if (SAMD21) || (SAMR21)
sahilmgandhi 18:6a4db94011d3 76 system_gclk_chan_disable(RTC_GCLK_ID);
sahilmgandhi 18:6a4db94011d3 77 #elif (SAML21)
sahilmgandhi 18:6a4db94011d3 78 system_gclk_chan_disable(RTC_CLOCK_SOURCE);
sahilmgandhi 18:6a4db94011d3 79 #endif
sahilmgandhi 18:6a4db94011d3 80 rtc_inited = 0;
sahilmgandhi 18:6a4db94011d3 81 }
sahilmgandhi 18:6a4db94011d3 82 }
sahilmgandhi 18:6a4db94011d3 83
sahilmgandhi 18:6a4db94011d3 84 /** Checks whether RTC is enabled or not
sahilmgandhi 18:6a4db94011d3 85 *
sahilmgandhi 18:6a4db94011d3 86 * To check whether RTC module is enabled or not
sahilmgandhi 18:6a4db94011d3 87 * @param[void] void
sahilmgandhi 18:6a4db94011d3 88 * @return Non zero if RTC is already enabled, else zero
sahilmgandhi 18:6a4db94011d3 89 */
sahilmgandhi 18:6a4db94011d3 90 int rtc_isenabled(void)
sahilmgandhi 18:6a4db94011d3 91 {
sahilmgandhi 18:6a4db94011d3 92 return rtc_inited;
sahilmgandhi 18:6a4db94011d3 93 }
sahilmgandhi 18:6a4db94011d3 94
sahilmgandhi 18:6a4db94011d3 95 /** Reads the RTC value
sahilmgandhi 18:6a4db94011d3 96 *
sahilmgandhi 18:6a4db94011d3 97 * Reads and return the current time in RTC
sahilmgandhi 18:6a4db94011d3 98 * @param[void] void
sahilmgandhi 18:6a4db94011d3 99 * @return the current value in RTC
sahilmgandhi 18:6a4db94011d3 100 */
sahilmgandhi 18:6a4db94011d3 101 time_t rtc_read(void)
sahilmgandhi 18:6a4db94011d3 102 {
sahilmgandhi 18:6a4db94011d3 103 if (!rtc_inited) {
sahilmgandhi 18:6a4db94011d3 104 /* Return invalid time for now! */
sahilmgandhi 18:6a4db94011d3 105 return 0;
sahilmgandhi 18:6a4db94011d3 106 }
sahilmgandhi 18:6a4db94011d3 107 return (time_t)rtc_count_get_count(&rtc_instance);
sahilmgandhi 18:6a4db94011d3 108 }
sahilmgandhi 18:6a4db94011d3 109
sahilmgandhi 18:6a4db94011d3 110 /** Write the RTC value
sahilmgandhi 18:6a4db94011d3 111 *
sahilmgandhi 18:6a4db94011d3 112 * Update the time value in RTC
sahilmgandhi 18:6a4db94011d3 113 * @param[in] t The time value to be written
sahilmgandhi 18:6a4db94011d3 114 * @return void
sahilmgandhi 18:6a4db94011d3 115 */
sahilmgandhi 18:6a4db94011d3 116 void rtc_write(time_t t)
sahilmgandhi 18:6a4db94011d3 117 {
sahilmgandhi 18:6a4db94011d3 118 if (!rtc_inited) {
sahilmgandhi 18:6a4db94011d3 119 /* Initialize the RTC is not yet initialized */
sahilmgandhi 18:6a4db94011d3 120 rtc_init();
sahilmgandhi 18:6a4db94011d3 121 }
sahilmgandhi 18:6a4db94011d3 122
sahilmgandhi 18:6a4db94011d3 123 uint32_t count_value = (uint32_t)t;
sahilmgandhi 18:6a4db94011d3 124 rtc_count_set_count(&rtc_instance, count_value);
sahilmgandhi 18:6a4db94011d3 125 }