mirror of https://github.com/ARMmbed/mbed-os.git
[NANO130] Support LP_TICKER, RTC, and beta version of SLEEP
MS30 CCChang12
parent
f98c54948c
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3f09447ded
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/* mbed Microcontroller Library
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* Copyright (c) 2015-2017 Nuvoton
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "lp_ticker_api.h"
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#if DEVICE_LOWPOWERTIMER
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#include "sleep_api.h"
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#include "nu_modutil.h"
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#include "nu_miscutil.h"
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#include "mbed_critical.h"
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// lp_ticker tick = us = timestamp
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#define US_PER_TICK (1)
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#define US_PER_SEC (1000 * 1000)
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#define US_PER_TMR2_INT (US_PER_SEC * 10)
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#define TMR2_CLK_PER_SEC (__LXT)
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#define TMR2_CLK_PER_TMR2_INT ((uint32_t) ((uint64_t) US_PER_TMR2_INT * TMR2_CLK_PER_SEC / US_PER_SEC))
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#define TMR3_CLK_PER_SEC (__LXT)
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#define LXT_DELAY (42000000 / __LXT)
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void TMR2_IRQHandler(void);
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void TMR3_IRQHandler(void);
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static void lp_ticker_arm_cd(void);
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static int lp_ticker_inited = 0;
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static volatile uint32_t counter_major = 0;
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static volatile uint32_t cd_major_minor_clks = 0;
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static volatile uint32_t cd_minor_clks = 0;
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static volatile uint32_t wakeup_tick = (uint32_t) -1;
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// NOTE: To wake the system from power down mode, timer clock source must be ether LXT or LIRC.
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// NOTE: TIMER_2 for normal counting and TIMER_3 for scheduled wakeup
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static const struct nu_modinit_s timer2_modinit = {TIMER_2, TMR2_MODULE, CLK_CLKSEL2_TMR2_S_LXT, 0, TMR2_RST, TMR2_IRQn, (void *) TMR2_IRQHandler};
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static const struct nu_modinit_s timer3_modinit = {TIMER_3, TMR3_MODULE, CLK_CLKSEL2_TMR3_S_LXT, 0, TMR3_RST, TMR3_IRQn, (void *) TMR3_IRQHandler};
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#define TMR_CMP_MIN 2
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#define TMR_CMP_MAX 0xFFFFFFu
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void lp_ticker_init(void)
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{
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if (lp_ticker_inited) {
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return;
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}
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lp_ticker_inited = 1;
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counter_major = 0;
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cd_major_minor_clks = 0;
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cd_minor_clks = 0;
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wakeup_tick = (uint32_t) -1;
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// Reset module
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SYS_ResetModule(timer2_modinit.rsetidx);
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SYS_ResetModule(timer3_modinit.rsetidx);
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// Select IP clock source
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CLK_SetModuleClock(timer2_modinit.clkidx, timer2_modinit.clksrc, timer2_modinit.clkdiv);
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CLK_SetModuleClock(timer3_modinit.clkidx, timer3_modinit.clksrc, timer3_modinit.clkdiv);
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// Enable IP clock
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CLK_EnableModuleClock(timer2_modinit.clkidx);
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CLK_EnableModuleClock(timer3_modinit.clkidx);
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// Configure clock
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uint32_t clk_timer2 = TIMER_GetModuleClock((TIMER_T *) NU_MODBASE(timer2_modinit.modname));
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uint32_t prescale_timer2 = clk_timer2 / TMR2_CLK_PER_SEC - 1;
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MBED_ASSERT((prescale_timer2 != (uint32_t) -1) && prescale_timer2 <= 127);
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MBED_ASSERT((clk_timer2 % TMR2_CLK_PER_SEC) == 0);
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uint32_t cmp_timer2 = TMR2_CLK_PER_TMR2_INT;
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MBED_ASSERT(cmp_timer2 >= TMR_CMP_MIN && cmp_timer2 <= TMR_CMP_MAX);
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// Continuous mode
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((TIMER_T *) NU_MODBASE(timer2_modinit.modname))->CTL = TIMER_PERIODIC_MODE;
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((TIMER_T *) NU_MODBASE(timer2_modinit.modname))->PRECNT = prescale_timer2;
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((TIMER_T *) NU_MODBASE(timer2_modinit.modname))->CMPR = cmp_timer2;
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// Set vector
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NVIC_SetVector(timer2_modinit.irq_n, (uint32_t) timer2_modinit.var);
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NVIC_SetVector(timer3_modinit.irq_n, (uint32_t) timer3_modinit.var);
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NVIC_EnableIRQ(timer2_modinit.irq_n);
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NVIC_EnableIRQ(timer3_modinit.irq_n);
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TIMER_EnableInt((TIMER_T *) NU_MODBASE(timer2_modinit.modname));
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TIMER_EnableWakeup((TIMER_T *) NU_MODBASE(timer2_modinit.modname));
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// NOTE: TIMER_Start() first and then lp_ticker_set_interrupt(); otherwise, we may get stuck in lp_ticker_read() because
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// timer is not running.
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// wait previous CTL action is finish
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nu_nop(LXT_DELAY);
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// Start timer
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TIMER_Start((TIMER_T *) NU_MODBASE(timer2_modinit.modname));
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// Schedule wakeup to match semantics of lp_ticker_get_compare_match()
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lp_ticker_set_interrupt(wakeup_tick);
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}
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timestamp_t lp_ticker_read()
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{
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if (! lp_ticker_inited) {
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lp_ticker_init();
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}
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TIMER_T * timer2_base = (TIMER_T *) NU_MODBASE(timer2_modinit.modname);
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do {
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uint64_t major_minor_clks;
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uint32_t minor_clks;
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// NOTE: As TIMER_DR = TIMER_CMPR and counter_major has increased by one, TIMER_DR doesn't change to 0 for one tick time.
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// NOTE: As TIMER_DR = TIMER_CMPR or TIMER_DR = 0, counter_major (ISR) may not sync with TIMER_DR. So skip and fetch stable one at the cost of 1 clock delay on this read.
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do {
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core_util_critical_section_enter();
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// NOTE: Order of reading minor_us/carry here is significant.
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minor_clks = TIMER_GetCounter(timer2_base);
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uint32_t carry = (timer2_base->ISR & TIMER_ISR_TMR_IS_Msk) ? 1 : 0;
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// When TIMER_DR approaches TIMER_CMPR and will wrap soon, we may get carry but TIMER_DR not wrapped. Hanlde carefully carry == 1 && TIMER_DR is near TIMER_CMPR.
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if (carry && minor_clks > (TMR2_CLK_PER_TMR2_INT / 2)) {
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major_minor_clks = (counter_major + 1) * TMR2_CLK_PER_TMR2_INT;
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}
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else {
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major_minor_clks = (counter_major + carry) * TMR2_CLK_PER_TMR2_INT + minor_clks;
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}
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core_util_critical_section_exit();
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}
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while (minor_clks == 0 || minor_clks == TMR2_CLK_PER_TMR2_INT);
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// Add power-down compensation
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return ((uint64_t) major_minor_clks * US_PER_SEC / TMR3_CLK_PER_SEC / US_PER_TICK);
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}
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while (0);
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}
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void lp_ticker_set_interrupt(timestamp_t timestamp)
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{
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uint32_t now = lp_ticker_read();
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wakeup_tick = timestamp;
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TIMER_Stop((TIMER_T *) NU_MODBASE(timer3_modinit.modname));
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/**
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* FIXME: Scheduled alarm may go off incorrectly due to wrap around.
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* Conditions in which delta is negative:
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* 1. Wrap around
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* 2. Newly scheduled alarm is behind now
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*/
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//int delta = (timestamp > now) ? (timestamp - now) : (uint32_t) ((uint64_t) timestamp + 0xFFFFFFFFu - now);
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int delta = (int) (timestamp - now);
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if (delta > 0) {
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cd_major_minor_clks = (uint64_t) delta * US_PER_TICK * TMR3_CLK_PER_SEC / US_PER_SEC;
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lp_ticker_arm_cd();
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}
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else {
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cd_major_minor_clks = cd_minor_clks = 0;
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/**
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* This event was in the past. Set the interrupt as pending, but don't process it here.
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* This prevents a recurive loop under heavy load which can lead to a stack overflow.
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*/
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NVIC_SetPendingIRQ(timer3_modinit.irq_n);
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}
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}
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void lp_ticker_disable_interrupt(void)
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{
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TIMER_DisableInt((TIMER_T *) NU_MODBASE(timer3_modinit.modname));
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}
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void lp_ticker_clear_interrupt(void)
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{
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TIMER_ClearIntFlag((TIMER_T *) NU_MODBASE(timer3_modinit.modname));
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}
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void TMR2_IRQHandler(void)
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{
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TIMER_ClearIntFlag((TIMER_T *) NU_MODBASE(timer2_modinit.modname));
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TIMER_ClearWakeupFlag((TIMER_T *) NU_MODBASE(timer2_modinit.modname));
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counter_major ++;
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}
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void TMR3_IRQHandler(void)
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{
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TIMER_ClearIntFlag((TIMER_T *) NU_MODBASE(timer3_modinit.modname));
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TIMER_ClearWakeupFlag((TIMER_T *) NU_MODBASE(timer3_modinit.modname));
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cd_major_minor_clks = (cd_major_minor_clks > cd_minor_clks) ? (cd_major_minor_clks - cd_minor_clks) : 0;
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if (cd_major_minor_clks == 0) {
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// NOTE: lp_ticker_set_interrupt() may get called in lp_ticker_irq_handler();
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lp_ticker_irq_handler();
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}
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else {
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lp_ticker_arm_cd();
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}
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}
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static void lp_ticker_arm_cd(void)
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{
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TIMER_T * timer3_base = (TIMER_T *) NU_MODBASE(timer3_modinit.modname);
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// Reset Timer's pre-scale counter, internal 24-bit up-counter and TMR_CTL [TMR_EN] bit
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timer3_base->CTL |= TIMER_CTL_SW_RST_Msk;
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// One-shot mode, Clock = 1 KHz
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uint32_t clk_timer3 = TIMER_GetModuleClock((TIMER_T *) NU_MODBASE(timer3_modinit.modname));
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uint32_t prescale_timer3 = clk_timer3 / TMR3_CLK_PER_SEC - 1;
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MBED_ASSERT((prescale_timer3 != (uint32_t) -1) && prescale_timer3 <= 127);
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MBED_ASSERT((clk_timer3 % TMR3_CLK_PER_SEC) == 0);
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uint32_t ctl_timer3 = timer3_base->CTL;
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ctl_timer3 &= ~TIMER_CTL_MODE_SEL_Msk;
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ctl_timer3 |= TIMER_ONESHOT_MODE;
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// wait previous CTL action is finish
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nu_nop(LXT_DELAY);
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timer3_base->CTL = ctl_timer3;
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timer3_base->PRECNT = prescale_timer3;
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cd_minor_clks = cd_major_minor_clks;
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cd_minor_clks = NU_CLAMP(cd_minor_clks, TMR_CMP_MIN, TMR_CMP_MAX);
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timer3_base->CMPR = cd_minor_clks;
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TIMER_EnableInt(timer3_base);
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TIMER_EnableWakeup((TIMER_T *) NU_MODBASE(timer3_modinit.modname));
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// wait previous CTL action is finish
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nu_nop(LXT_DELAY);
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TIMER_Start(timer3_base);
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}
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#endif
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@ -0,0 +1,121 @@
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/* mbed Microcontroller Library
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* Copyright (c) 2015-2017 Nuvoton
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "rtc_api.h"
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#if DEVICE_RTC
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#include "mbed_wait_api.h"
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#include "mbed_error.h"
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#include "nu_modutil.h"
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#include "nu_miscutil.h"
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#define YEAR0 1900
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#define LXT_DELAY (42000000 / __LXT)
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static int rtc_inited = 0;
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static const struct nu_modinit_s rtc_modinit = {RTC_0, RTC_MODULE, 0, 0, 0, RTC_IRQn, NULL};
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void rtc_init(void)
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{
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if (rtc_inited) {
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return;
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}
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rtc_inited = 1;
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// Enable IP clock
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CLK_EnableModuleClock(rtc_modinit.clkidx);
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RTC_Open(NULL);
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}
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void rtc_free(void)
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{
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// FIXME
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}
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int rtc_isenabled(void)
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{
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return rtc_inited;
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}
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/*
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struct tm
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tm_sec seconds after the minute 0-61
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tm_min minutes after the hour 0-59
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tm_hour hours since midnight 0-23
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tm_mday day of the month 1-31
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tm_mon months since January 0-11
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tm_year years since 1900
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tm_wday days since Sunday 0-6
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tm_yday days since January 1 0-365
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tm_isdst Daylight Saving Time flag
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*/
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time_t rtc_read(void)
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{
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if (! rtc_inited) {
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rtc_init();
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}
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S_RTC_TIME_DATA_T rtc_datetime;
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RTC_GetDateAndTime(&rtc_datetime);
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struct tm timeinfo;
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// Convert struct tm to S_RTC_TIME_DATA_T
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timeinfo.tm_year = rtc_datetime.u32Year - YEAR0;
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timeinfo.tm_mon = rtc_datetime.u32Month - 1;
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timeinfo.tm_mday = rtc_datetime.u32Day;
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timeinfo.tm_wday = rtc_datetime.u32DayOfWeek;
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timeinfo.tm_hour = rtc_datetime.u32Hour;
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timeinfo.tm_min = rtc_datetime.u32Minute;
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timeinfo.tm_sec = rtc_datetime.u32Second;
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// Convert to timestamp
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time_t t = mktime(&timeinfo);
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return t;
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}
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void rtc_write(time_t t)
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{
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if (! rtc_inited) {
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rtc_init();
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}
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// Convert timestamp to struct tm
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struct tm *timeinfo = localtime(&t);
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S_RTC_TIME_DATA_T rtc_datetime;
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// Convert S_RTC_TIME_DATA_T to struct tm
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rtc_datetime.u32Year = timeinfo->tm_year + YEAR0;
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rtc_datetime.u32Month = timeinfo->tm_mon + 1;
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rtc_datetime.u32Day = timeinfo->tm_mday;
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rtc_datetime.u32DayOfWeek = timeinfo->tm_wday;
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rtc_datetime.u32Hour = timeinfo->tm_hour;
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rtc_datetime.u32Minute = timeinfo->tm_min;
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rtc_datetime.u32Second = timeinfo->tm_sec;
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rtc_datetime.u32TimeScale = RTC_CLOCK_24;
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RTC_SetDateAndTime(&rtc_datetime);
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// wait this RTC write is active
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nu_nop(LXT_DELAY);
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}
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#endif
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/* mbed Microcontroller Library
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* Copyright (c) 2015-2017 Nuvoton
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
|
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* you may not use this file except in compliance with the License.
|
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* You may obtain a copy of the License at
|
||||
*
|
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
|
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* distributed under the License is distributed on an "AS IS" BASIS,
|
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "sleep_api.h"
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#include "serial_api.h"
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#include "lp_ticker_api.h"
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#if DEVICE_SLEEP
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#include "cmsis.h"
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#include "device.h"
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#include "objects.h"
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#include "PeripheralPins.h"
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static void mbed_enter_sleep(struct sleep_s *obj);
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static void mbed_exit_sleep(struct sleep_s *obj);
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int serial_allow_powerdown(void);
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int spi_allow_powerdown(void);
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int i2c_allow_powerdown(void);
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int pwmout_allow_powerdown(void);
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/**
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* Enter Idle mode.
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*/
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void hal_sleep(void)
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{
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struct sleep_s sleep_obj;
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sleep_obj.powerdown = 0;
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mbed_enter_sleep(&sleep_obj);
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mbed_exit_sleep(&sleep_obj);
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}
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/**
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* Enter Power-down mode while no peripheral is active; otherwise, enter Idle mode.
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*/
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void hal_deepsleep(void)
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{
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struct sleep_s sleep_obj;
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sleep_obj.powerdown = 1;
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mbed_enter_sleep(&sleep_obj);
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mbed_exit_sleep(&sleep_obj);
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}
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static void mbed_enter_sleep(struct sleep_s *obj)
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{
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#if 0
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// Check if serial allows entering power-down mode
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if (obj->powerdown) {
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obj->powerdown = serial_allow_powerdown();
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}
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// Check if spi allows entering power-down mode
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if (obj->powerdown) {
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obj->powerdown = spi_allow_powerdown();
|
||||
}
|
||||
// Check if i2c allows entering power-down mode
|
||||
if (obj->powerdown) {
|
||||
obj->powerdown = i2c_allow_powerdown();
|
||||
}
|
||||
// Check if pwmout allows entering power-down mode
|
||||
if (obj->powerdown) {
|
||||
obj->powerdown = pwmout_allow_powerdown();
|
||||
}
|
||||
// TODO: Check if other peripherals allow entering power-down mode
|
||||
#endif
|
||||
|
||||
if (obj->powerdown) { // Power-down mode (HIRC/HXT disabled, LIRC/LXT enabled)
|
||||
SYS_UnlockReg();
|
||||
CLK_PowerDown();
|
||||
SYS_LockReg();
|
||||
}
|
||||
else { // CPU halt mode (HIRC/HXT enabled, LIRC/LXT enabled)
|
||||
SYS_UnlockReg();
|
||||
CLK_Idle();
|
||||
SYS_LockReg();
|
||||
}
|
||||
__NOP();
|
||||
__NOP();
|
||||
__NOP();
|
||||
__NOP();
|
||||
}
|
||||
|
||||
static void mbed_exit_sleep(struct sleep_s *obj)
|
||||
{
|
||||
// TODO: TO BE CONTINUED
|
||||
|
||||
(void)obj;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
|
@ -2633,7 +2633,7 @@
|
|||
"supported_toolchains": ["ARM", "uARM", "GCC_ARM", "IAR"],
|
||||
"inherits": ["Target"],
|
||||
"progen": {"target": "numaker-pfm-nano130"},
|
||||
"device_has": ["INTERRUPTIN", "PORTIN", "PORTINOUT", "PORTOUT", "SERIAL", "SERIAL_ASYNCH", "SERIAL_FC", "STDIO_MESSAGES", "I2C", "I2CSLAVE", "I2C_ASYNCH", "SPI", "SPISLAVE", "SPI_ASYNCH"],
|
||||
"device_has": ["I2C", "I2CSLAVE", "I2C_ASYNCH", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SERIAL_FC", "STDIO_MESSAGES", "SLEEP", "SPI", "SPISLAVE", "SPI_ASYNCH"],
|
||||
"release_versions": ["5"],
|
||||
"device_name": "NANO130KE3BN"
|
||||
},
|
||||
|
|
|
|||
Loading…
Reference in New Issue