t
Fork of mbed-dev by
targets/TARGET_Maxim/TARGET_MAX32620/rtc_api.c@178:c26431f84b0d, 2017-11-09 (annotated)
- Committer:
- amithy
- Date:
- Thu Nov 09 22:14:37 2017 +0000
- Revision:
- 178:c26431f84b0d
- Parent:
- 149:156823d33999
- Child:
- 174:b96e65c34a4d
test export
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
<> | 149:156823d33999 | 1 | /******************************************************************************* |
<> | 149:156823d33999 | 2 | * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved. |
<> | 149:156823d33999 | 3 | * |
<> | 149:156823d33999 | 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
<> | 149:156823d33999 | 5 | * copy of this software and associated documentation files (the "Software"), |
<> | 149:156823d33999 | 6 | * to deal in the Software without restriction, including without limitation |
<> | 149:156823d33999 | 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
<> | 149:156823d33999 | 8 | * and/or sell copies of the Software, and to permit persons to whom the |
<> | 149:156823d33999 | 9 | * Software is furnished to do so, subject to the following conditions: |
<> | 149:156823d33999 | 10 | * |
<> | 149:156823d33999 | 11 | * The above copyright notice and this permission notice shall be included |
<> | 149:156823d33999 | 12 | * in all copies or substantial portions of the Software. |
<> | 149:156823d33999 | 13 | * |
<> | 149:156823d33999 | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
<> | 149:156823d33999 | 15 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
<> | 149:156823d33999 | 16 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
<> | 149:156823d33999 | 17 | * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES |
<> | 149:156823d33999 | 18 | * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
<> | 149:156823d33999 | 19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
<> | 149:156823d33999 | 20 | * OTHER DEALINGS IN THE SOFTWARE. |
<> | 149:156823d33999 | 21 | * |
<> | 149:156823d33999 | 22 | * Except as contained in this notice, the name of Maxim Integrated |
<> | 149:156823d33999 | 23 | * Products, Inc. shall not be used except as stated in the Maxim Integrated |
<> | 149:156823d33999 | 24 | * Products, Inc. Branding Policy. |
<> | 149:156823d33999 | 25 | * |
<> | 149:156823d33999 | 26 | * The mere transfer of this software does not imply any licenses |
<> | 149:156823d33999 | 27 | * of trade secrets, proprietary technology, copyrights, patents, |
<> | 149:156823d33999 | 28 | * trademarks, maskwork rights, or any other form of intellectual |
<> | 149:156823d33999 | 29 | * property whatsoever. Maxim Integrated Products, Inc. retains all |
<> | 149:156823d33999 | 30 | * ownership rights. |
<> | 149:156823d33999 | 31 | ******************************************************************************* |
<> | 149:156823d33999 | 32 | */ |
<> | 149:156823d33999 | 33 | |
<> | 149:156823d33999 | 34 | #include "rtc_api.h" |
<> | 149:156823d33999 | 35 | #include "lp_ticker_api.h" |
<> | 149:156823d33999 | 36 | #include "cmsis.h" |
<> | 149:156823d33999 | 37 | #include "rtc_regs.h" |
<> | 149:156823d33999 | 38 | #include "pwrseq_regs.h" |
<> | 149:156823d33999 | 39 | #include "clkman_regs.h" |
<> | 149:156823d33999 | 40 | |
<> | 149:156823d33999 | 41 | /** |
<> | 149:156823d33999 | 42 | * Defines clock divider for 4096Hz input clock. |
<> | 149:156823d33999 | 43 | */ |
<> | 149:156823d33999 | 44 | typedef enum { |
<> | 149:156823d33999 | 45 | /** (4kHz) divide input clock by 2^0 = 1 */ |
<> | 149:156823d33999 | 46 | MXC_E_RTC_PRESCALE_DIV_2_0 = 0, |
<> | 149:156823d33999 | 47 | /** (2kHz) divide input clock by 2^1 = 2 */ |
<> | 149:156823d33999 | 48 | MXC_E_RTC_PRESCALE_DIV_2_1, |
<> | 149:156823d33999 | 49 | /** (1kHz) divide input clock by 2^2 = 4 */ |
<> | 149:156823d33999 | 50 | MXC_E_RTC_PRESCALE_DIV_2_2, |
<> | 149:156823d33999 | 51 | /** (512Hz) divide input clock by 2^3 = 8 */ |
<> | 149:156823d33999 | 52 | MXC_E_RTC_PRESCALE_DIV_2_3, |
<> | 149:156823d33999 | 53 | /** (256Hz) divide input clock by 2^4 = 16 */ |
<> | 149:156823d33999 | 54 | MXC_E_RTC_PRESCALE_DIV_2_4, |
<> | 149:156823d33999 | 55 | /** (128Hz) divide input clock by 2^5 = 32 */ |
<> | 149:156823d33999 | 56 | MXC_E_RTC_PRESCALE_DIV_2_5, |
<> | 149:156823d33999 | 57 | /** (64Hz) divide input clock by 2^6 = 64 */ |
<> | 149:156823d33999 | 58 | MXC_E_RTC_PRESCALE_DIV_2_6, |
<> | 149:156823d33999 | 59 | /** (32Hz) divide input clock by 2^7 = 128 */ |
<> | 149:156823d33999 | 60 | MXC_E_RTC_PRESCALE_DIV_2_7, |
<> | 149:156823d33999 | 61 | /** (16Hz) divide input clock by 2^8 = 256 */ |
<> | 149:156823d33999 | 62 | MXC_E_RTC_PRESCALE_DIV_2_8, |
<> | 149:156823d33999 | 63 | /** (8Hz) divide input clock by 2^9 = 512 */ |
<> | 149:156823d33999 | 64 | MXC_E_RTC_PRESCALE_DIV_2_9, |
<> | 149:156823d33999 | 65 | /** (4Hz) divide input clock by 2^10 = 1024 */ |
<> | 149:156823d33999 | 66 | MXC_E_RTC_PRESCALE_DIV_2_10, |
<> | 149:156823d33999 | 67 | /** (2Hz) divide input clock by 2^11 = 2048 */ |
<> | 149:156823d33999 | 68 | MXC_E_RTC_PRESCALE_DIV_2_11, |
<> | 149:156823d33999 | 69 | /** (1Hz) divide input clock by 2^12 = 4096 */ |
<> | 149:156823d33999 | 70 | MXC_E_RTC_PRESCALE_DIV_2_12, |
<> | 149:156823d33999 | 71 | } mxc_rtc_prescale_t; |
<> | 149:156823d33999 | 72 | |
<> | 149:156823d33999 | 73 | #define PRESCALE_VAL MXC_E_RTC_PRESCALE_DIV_2_0 // Set the divider for the 4kHz clock |
<> | 149:156823d33999 | 74 | #define SHIFT_AMT (MXC_E_RTC_PRESCALE_DIV_2_12 - PRESCALE_VAL) |
<> | 149:156823d33999 | 75 | |
<> | 149:156823d33999 | 76 | #define WINDOW 1000 |
<> | 149:156823d33999 | 77 | |
<> | 149:156823d33999 | 78 | static int rtc_inited = 0; |
<> | 149:156823d33999 | 79 | static volatile uint32_t overflow_cnt = 0; |
<> | 149:156823d33999 | 80 | |
<> | 149:156823d33999 | 81 | static uint64_t rtc_read64(void); |
<> | 149:156823d33999 | 82 | |
<> | 149:156823d33999 | 83 | //****************************************************************************** |
<> | 149:156823d33999 | 84 | static void overflow_handler(void) |
<> | 149:156823d33999 | 85 | { |
<> | 149:156823d33999 | 86 | MXC_RTCTMR->flags |= MXC_F_RTC_FLAGS_ASYNC_CLR_FLAGS; |
<> | 149:156823d33999 | 87 | overflow_cnt++; |
<> | 149:156823d33999 | 88 | |
<> | 149:156823d33999 | 89 | // Wait for pending transactions |
<> | 149:156823d33999 | 90 | while (MXC_RTCTMR->ctrl & MXC_F_RTC_CTRL_PENDING); |
<> | 149:156823d33999 | 91 | } |
<> | 149:156823d33999 | 92 | |
<> | 149:156823d33999 | 93 | //****************************************************************************** |
<> | 149:156823d33999 | 94 | void rtc_init(void) |
<> | 149:156823d33999 | 95 | { |
<> | 149:156823d33999 | 96 | if (rtc_inited) { |
<> | 149:156823d33999 | 97 | return; |
<> | 149:156823d33999 | 98 | } |
<> | 149:156823d33999 | 99 | rtc_inited = 1; |
<> | 149:156823d33999 | 100 | |
<> | 149:156823d33999 | 101 | overflow_cnt = 0; |
<> | 149:156823d33999 | 102 | |
<> | 149:156823d33999 | 103 | // Enable the clock to the synchronizer |
<> | 149:156823d33999 | 104 | MXC_CLKMAN->sys_clk_ctrl_1_sync = MXC_S_CLKMAN_CLK_SCALE_DIV_1; |
<> | 149:156823d33999 | 105 | |
<> | 149:156823d33999 | 106 | // Enable the clock to the RTC |
<> | 149:156823d33999 | 107 | MXC_PWRSEQ->reg0 |= MXC_F_PWRSEQ_REG0_PWR_RTCEN_RUN; |
<> | 149:156823d33999 | 108 | |
<> | 149:156823d33999 | 109 | // Prepare interrupt handlers |
<> | 149:156823d33999 | 110 | NVIC_SetVector(RTC0_IRQn, (uint32_t)lp_ticker_irq_handler); |
<> | 149:156823d33999 | 111 | NVIC_EnableIRQ(RTC0_IRQn); |
<> | 149:156823d33999 | 112 | NVIC_SetVector(RTC3_IRQn, (uint32_t)overflow_handler); |
<> | 149:156823d33999 | 113 | NVIC_EnableIRQ(RTC3_IRQn); |
<> | 149:156823d33999 | 114 | |
<> | 149:156823d33999 | 115 | // Enable wakeup on RTC rollover |
<> | 149:156823d33999 | 116 | MXC_PWRSEQ->msk_flags &= ~MXC_F_PWRSEQ_MSK_FLAGS_RTC_ROLLOVER; |
<> | 149:156823d33999 | 117 | |
<> | 149:156823d33999 | 118 | /* RTC registers are only reset on a power cycle. Do not reconfigure the RTC |
<> | 149:156823d33999 | 119 | * if it is already running. |
<> | 149:156823d33999 | 120 | */ |
<> | 149:156823d33999 | 121 | if (!(MXC_RTCTMR->ctrl & MXC_F_RTC_CTRL_ENABLE)) { |
<> | 149:156823d33999 | 122 | // Set the clock divider |
<> | 149:156823d33999 | 123 | MXC_RTCTMR->prescale = PRESCALE_VAL; |
<> | 149:156823d33999 | 124 | |
<> | 149:156823d33999 | 125 | // Enable the overflow interrupt |
<> | 149:156823d33999 | 126 | MXC_RTCTMR->inten |= MXC_F_RTC_FLAGS_OVERFLOW; |
<> | 149:156823d33999 | 127 | |
<> | 149:156823d33999 | 128 | // Restart the timer from 0 |
<> | 149:156823d33999 | 129 | MXC_RTCTMR->timer = 0; |
<> | 149:156823d33999 | 130 | |
<> | 149:156823d33999 | 131 | // Enable the RTC |
<> | 149:156823d33999 | 132 | MXC_RTCTMR->ctrl |= MXC_F_RTC_CTRL_ENABLE; |
<> | 149:156823d33999 | 133 | } |
<> | 149:156823d33999 | 134 | } |
<> | 149:156823d33999 | 135 | |
<> | 149:156823d33999 | 136 | //****************************************************************************** |
<> | 149:156823d33999 | 137 | void lp_ticker_init(void) |
<> | 149:156823d33999 | 138 | { |
<> | 149:156823d33999 | 139 | rtc_init(); |
<> | 149:156823d33999 | 140 | } |
<> | 149:156823d33999 | 141 | |
<> | 149:156823d33999 | 142 | //****************************************************************************** |
<> | 149:156823d33999 | 143 | void rtc_free(void) |
<> | 149:156823d33999 | 144 | { |
<> | 149:156823d33999 | 145 | if (MXC_RTCTMR->ctrl & MXC_F_RTC_CTRL_ENABLE) { |
<> | 149:156823d33999 | 146 | // Clear and disable RTC |
<> | 149:156823d33999 | 147 | MXC_RTCTMR->ctrl |= MXC_F_RTC_CTRL_CLEAR; |
<> | 149:156823d33999 | 148 | MXC_RTCTMR->ctrl &= ~MXC_F_RTC_CTRL_ENABLE; |
<> | 149:156823d33999 | 149 | |
<> | 149:156823d33999 | 150 | // Wait for pending transactions |
<> | 149:156823d33999 | 151 | while (MXC_RTCTMR->ctrl & MXC_F_RTC_CTRL_PENDING); |
<> | 149:156823d33999 | 152 | } |
<> | 149:156823d33999 | 153 | |
<> | 149:156823d33999 | 154 | // Disable the clock to the RTC |
<> | 149:156823d33999 | 155 | MXC_PWRSEQ->reg0 &= ~(MXC_F_PWRSEQ_REG0_PWR_RTCEN_RUN | MXC_F_PWRSEQ_REG0_PWR_RTCEN_SLP); |
<> | 149:156823d33999 | 156 | |
<> | 149:156823d33999 | 157 | // Disable the clock to the synchronizer |
<> | 149:156823d33999 | 158 | MXC_CLKMAN->sys_clk_ctrl_1_sync = MXC_S_CLKMAN_CLK_SCALE_DISABLED; |
<> | 149:156823d33999 | 159 | } |
<> | 149:156823d33999 | 160 | |
<> | 149:156823d33999 | 161 | //****************************************************************************** |
<> | 149:156823d33999 | 162 | int rtc_isenabled(void) |
<> | 149:156823d33999 | 163 | { |
<> | 149:156823d33999 | 164 | return (MXC_RTCTMR->ctrl & MXC_F_RTC_CTRL_ENABLE); |
<> | 149:156823d33999 | 165 | } |
<> | 149:156823d33999 | 166 | |
<> | 149:156823d33999 | 167 | //****************************************************************************** |
<> | 149:156823d33999 | 168 | time_t rtc_read(void) |
<> | 149:156823d33999 | 169 | { |
<> | 149:156823d33999 | 170 | uint32_t ovf_cnt_1, ovf_cnt_2, timer_cnt; |
<> | 149:156823d33999 | 171 | uint32_t ovf1, ovf2; |
<> | 149:156823d33999 | 172 | |
<> | 149:156823d33999 | 173 | // Make sure RTC is setup before trying to read |
<> | 149:156823d33999 | 174 | if (!rtc_inited) { |
<> | 149:156823d33999 | 175 | rtc_init(); |
<> | 149:156823d33999 | 176 | } |
<> | 149:156823d33999 | 177 | |
<> | 149:156823d33999 | 178 | // Ensure coherency between overflow_cnt and timer |
<> | 149:156823d33999 | 179 | do { |
<> | 149:156823d33999 | 180 | ovf_cnt_1 = overflow_cnt; |
<> | 149:156823d33999 | 181 | ovf1 = MXC_RTCTMR->flags & MXC_F_RTC_FLAGS_OVERFLOW; |
<> | 149:156823d33999 | 182 | timer_cnt = MXC_RTCTMR->timer; |
<> | 149:156823d33999 | 183 | ovf2 = MXC_RTCTMR->flags & MXC_F_RTC_FLAGS_OVERFLOW; |
<> | 149:156823d33999 | 184 | ovf_cnt_2 = overflow_cnt; |
<> | 149:156823d33999 | 185 | } while ((ovf_cnt_1 != ovf_cnt_2) || (ovf1 != ovf2)); |
<> | 149:156823d33999 | 186 | |
<> | 149:156823d33999 | 187 | // Account for an unserviced interrupt |
<> | 149:156823d33999 | 188 | if (ovf1) { |
<> | 149:156823d33999 | 189 | ovf_cnt_1++; |
<> | 149:156823d33999 | 190 | } |
<> | 149:156823d33999 | 191 | |
<> | 149:156823d33999 | 192 | return (timer_cnt >> SHIFT_AMT) + (ovf_cnt_1 << (32 - SHIFT_AMT)); |
<> | 149:156823d33999 | 193 | } |
<> | 149:156823d33999 | 194 | |
<> | 149:156823d33999 | 195 | //****************************************************************************** |
<> | 149:156823d33999 | 196 | static uint64_t rtc_read64(void) |
<> | 149:156823d33999 | 197 | { |
<> | 149:156823d33999 | 198 | uint32_t ovf_cnt_1, ovf_cnt_2, timer_cnt; |
<> | 149:156823d33999 | 199 | uint32_t ovf1, ovf2; |
<> | 149:156823d33999 | 200 | uint64_t current_us; |
<> | 149:156823d33999 | 201 | |
<> | 149:156823d33999 | 202 | // Make sure RTC is setup before trying to read |
<> | 149:156823d33999 | 203 | if (!rtc_inited) { |
<> | 149:156823d33999 | 204 | rtc_init(); |
<> | 149:156823d33999 | 205 | } |
<> | 149:156823d33999 | 206 | |
<> | 149:156823d33999 | 207 | // Ensure coherency between overflow_cnt and timer |
<> | 149:156823d33999 | 208 | do { |
<> | 149:156823d33999 | 209 | ovf_cnt_1 = overflow_cnt; |
<> | 149:156823d33999 | 210 | ovf1 = MXC_RTCTMR->flags & MXC_F_RTC_FLAGS_OVERFLOW; |
<> | 149:156823d33999 | 211 | timer_cnt = MXC_RTCTMR->timer; |
<> | 149:156823d33999 | 212 | ovf2 = MXC_RTCTMR->flags & MXC_F_RTC_FLAGS_OVERFLOW; |
<> | 149:156823d33999 | 213 | ovf_cnt_2 = overflow_cnt; |
<> | 149:156823d33999 | 214 | } while ((ovf_cnt_1 != ovf_cnt_2) || (ovf1 != ovf2)); |
<> | 149:156823d33999 | 215 | |
<> | 149:156823d33999 | 216 | // Account for an unserviced interrupt |
<> | 149:156823d33999 | 217 | if (ovf1) { |
<> | 149:156823d33999 | 218 | ovf_cnt_1++; |
<> | 149:156823d33999 | 219 | } |
<> | 149:156823d33999 | 220 | |
<> | 149:156823d33999 | 221 | current_us = (((uint64_t)timer_cnt * 1000000) >> SHIFT_AMT) + (((uint64_t)ovf_cnt_1 * 1000000) << (32 - SHIFT_AMT)); |
<> | 149:156823d33999 | 222 | |
<> | 149:156823d33999 | 223 | return current_us; |
<> | 149:156823d33999 | 224 | } |
<> | 149:156823d33999 | 225 | |
<> | 149:156823d33999 | 226 | //****************************************************************************** |
<> | 149:156823d33999 | 227 | void rtc_write(time_t t) |
<> | 149:156823d33999 | 228 | { |
<> | 149:156823d33999 | 229 | // Make sure RTC is setup before accessing |
<> | 149:156823d33999 | 230 | if (!rtc_inited) { |
<> | 149:156823d33999 | 231 | rtc_init(); |
<> | 149:156823d33999 | 232 | } |
<> | 149:156823d33999 | 233 | |
<> | 149:156823d33999 | 234 | MXC_RTCTMR->ctrl &= ~MXC_F_RTC_CTRL_ENABLE; // disable the timer while updating |
<> | 149:156823d33999 | 235 | MXC_RTCTMR->timer = t << SHIFT_AMT; |
<> | 149:156823d33999 | 236 | overflow_cnt = t >> (32 - SHIFT_AMT); |
<> | 149:156823d33999 | 237 | MXC_RTCTMR->ctrl |= MXC_F_RTC_CTRL_ENABLE; // enable the timer while updating |
<> | 149:156823d33999 | 238 | } |
<> | 149:156823d33999 | 239 | |
<> | 149:156823d33999 | 240 | //****************************************************************************** |
<> | 149:156823d33999 | 241 | void lp_ticker_set_interrupt(timestamp_t timestamp) |
<> | 149:156823d33999 | 242 | { |
<> | 149:156823d33999 | 243 | uint32_t comp_value; |
<> | 149:156823d33999 | 244 | uint64_t curr_ts64; |
<> | 149:156823d33999 | 245 | uint64_t ts64; |
<> | 149:156823d33999 | 246 | |
<> | 149:156823d33999 | 247 | // Note: interrupts are disabled before this function is called. |
<> | 149:156823d33999 | 248 | |
<> | 149:156823d33999 | 249 | // Disable the alarm while it is prepared |
<> | 149:156823d33999 | 250 | MXC_RTCTMR->inten &= ~MXC_F_RTC_INTEN_COMP0; |
<> | 149:156823d33999 | 251 | |
<> | 149:156823d33999 | 252 | curr_ts64 = rtc_read64(); |
<> | 149:156823d33999 | 253 | ts64 = (uint64_t)timestamp | (curr_ts64 & 0xFFFFFFFF00000000ULL); |
<> | 149:156823d33999 | 254 | |
<> | 149:156823d33999 | 255 | // If this event is older than a recent window, it must be in the future |
<> | 149:156823d33999 | 256 | if ((ts64 < (curr_ts64 - WINDOW)) && ((curr_ts64 - WINDOW) < curr_ts64)) { |
<> | 149:156823d33999 | 257 | ts64 += 0x100000000ULL; |
<> | 149:156823d33999 | 258 | } |
<> | 149:156823d33999 | 259 | |
<> | 149:156823d33999 | 260 | uint32_t timer = MXC_RTCTMR->timer; |
<> | 149:156823d33999 | 261 | if (ts64 <= curr_ts64) { |
<> | 149:156823d33999 | 262 | // This event has already occurred. Set the alarm to expire immediately. |
<> | 149:156823d33999 | 263 | comp_value = timer + 1; |
<> | 149:156823d33999 | 264 | } else { |
<> | 149:156823d33999 | 265 | comp_value = (ts64 << SHIFT_AMT) / 1000000; |
<> | 149:156823d33999 | 266 | } |
<> | 149:156823d33999 | 267 | |
<> | 149:156823d33999 | 268 | // Ensure that the compare value is far enough in the future to guarantee the interrupt occurs. |
<> | 149:156823d33999 | 269 | if ((comp_value < (timer + 2)) && (comp_value > (timer - 10))) { |
<> | 149:156823d33999 | 270 | comp_value = timer + 2; |
<> | 149:156823d33999 | 271 | } |
<> | 149:156823d33999 | 272 | |
<> | 149:156823d33999 | 273 | MXC_RTCTMR->comp[0] = comp_value; |
<> | 149:156823d33999 | 274 | MXC_RTCTMR->flags |= MXC_F_RTC_FLAGS_ASYNC_CLR_FLAGS; |
<> | 149:156823d33999 | 275 | MXC_RTCTMR->inten |= MXC_F_RTC_INTEN_COMP0; // enable the interrupt |
<> | 149:156823d33999 | 276 | |
<> | 149:156823d33999 | 277 | // Enable wakeup from RTC |
<> | 149:156823d33999 | 278 | MXC_PWRSEQ->msk_flags &= ~MXC_F_PWRSEQ_MSK_FLAGS_RTC_CMPR0; |
<> | 149:156823d33999 | 279 | |
<> | 149:156823d33999 | 280 | // Wait for pending transactions |
<> | 149:156823d33999 | 281 | while(MXC_RTCTMR->ctrl & MXC_F_RTC_CTRL_PENDING); |
<> | 149:156823d33999 | 282 | } |
<> | 149:156823d33999 | 283 | |
<> | 149:156823d33999 | 284 | //****************************************************************************** |
<> | 149:156823d33999 | 285 | inline void lp_ticker_disable_interrupt(void) |
<> | 149:156823d33999 | 286 | { |
<> | 149:156823d33999 | 287 | MXC_RTCTMR->inten &= ~MXC_F_RTC_INTEN_COMP0; |
<> | 149:156823d33999 | 288 | } |
<> | 149:156823d33999 | 289 | |
<> | 149:156823d33999 | 290 | //****************************************************************************** |
<> | 149:156823d33999 | 291 | inline void lp_ticker_clear_interrupt(void) |
<> | 149:156823d33999 | 292 | { |
<> | 149:156823d33999 | 293 | MXC_RTCTMR->flags |= MXC_F_RTC_FLAGS_ASYNC_CLR_FLAGS; |
<> | 149:156823d33999 | 294 | |
<> | 149:156823d33999 | 295 | // Wait for pending transactions |
<> | 149:156823d33999 | 296 | while (MXC_RTCTMR->ctrl & MXC_F_RTC_CTRL_PENDING); |
<> | 149:156823d33999 | 297 | } |
<> | 149:156823d33999 | 298 | |
<> | 149:156823d33999 | 299 | //****************************************************************************** |
<> | 149:156823d33999 | 300 | inline uint32_t lp_ticker_read(void) |
<> | 149:156823d33999 | 301 | { |
<> | 149:156823d33999 | 302 | return rtc_read64(); |
<> | 149:156823d33999 | 303 | } |