mirror of https://github.com/ARMmbed/mbed-os.git
Merge branch 'master' of https://github.com/mbedmicro/mbed
Mihail Stoyanov
commit
e1cd545a9c
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@ -29,7 +29,7 @@
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; <o> Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>
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; </h>
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Stack_Size EQU 0x00000400
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Stack_Size EQU 0x00000200
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AREA STACK, NOINIT, READWRITE, ALIGN=3
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Stack_Mem SPACE Stack_Size
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@ -37,7 +37,7 @@
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#ifdef __STACK_SIZE
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.equ Stack_Size, __STACK_SIZE
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#else
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.equ Stack_Size, 0x400
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.equ Stack_Size, 0x200
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#endif
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.globl __StackTop
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.globl __StackLimit
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@ -64,6 +64,8 @@
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#define DEVICE_ERROR_PATTERN 1
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#define DEVICE_LOWPOWERTIMER 1
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#define DEVICE_CAN 0
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#define DEVICE_ETHERNET 0
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@ -32,56 +32,51 @@
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*/
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#include "rtc_api.h"
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#include "lp_ticker_api.h"
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#include "cmsis.h"
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#include "rtc_regs.h"
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#include "pwrseq_regs.h"
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#include "clkman_regs.h"
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#define PRESCALE_VAL MXC_E_RTC_PRESCALE_DIV_2_0 // Set the divider for the 4kHz clock
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#define SHIFT_AMT (MXC_E_RTC_PRESCALE_DIV_2_12 - PRESCALE_VAL)
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static int rtc_inited = 0;
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static volatile uint32_t overflow_cnt = 0;
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static uint32_t overflow_alarm = 0;
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static uint64_t rtc_read64(void);
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//******************************************************************************
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static void overflow_handler(void)
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{
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MXC_RTCTMR->flags = MXC_F_RTC_FLAGS_ASYNC_CLR_FLAGS;
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MXC_RTCTMR->flags = MXC_F_RTC_FLAGS_OVERFLOW;
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overflow_cnt++;
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if (overflow_cnt == overflow_alarm) {
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// Enable the comparator interrupt for the alarm
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MXC_RTCTMR->inten |= MXC_F_RTC_INTEN_COMP0;
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}
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}
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//******************************************************************************
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static void alarm_handler(void)
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{
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MXC_RTCTMR->inten &= ~MXC_F_RTC_INTEN_COMP0;
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MXC_RTCTMR->flags = MXC_F_RTC_FLAGS_ASYNC_CLR_FLAGS;
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}
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//******************************************************************************
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void rtc_init(void)
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{
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if(rtc_inited) {
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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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overflow_cnt = 0;
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// Enable the clock to the synchronizer
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MXC_CLKMAN->clk_ctrl_13_rtc_int_sync = MXC_E_CLKMAN_CLK_SCALE_ENABLED;
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// Enable the clock to the RTC
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MXC_PWRSEQ->reg0 |= MXC_F_PWRSEQ_REG0_PWR_RTCEN_RUN;
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// Set the divider from the 4kHz clock
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MXC_RTCTMR->prescale = MXC_E_RTC_PRESCALE_DIV_2_0;
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// Set the clock divider
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MXC_RTCTMR->prescale = PRESCALE_VAL;
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// Enable the overflow interrupt
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MXC_RTCTMR->inten |= MXC_F_RTC_FLAGS_OVERFLOW;
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// Prepare interrupt handlers
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NVIC_SetVector(RTC0_IRQn, (uint32_t)alarm_handler);
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NVIC_SetVector(RTC0_IRQn, (uint32_t)lp_ticker_irq_handler);
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NVIC_EnableIRQ(RTC0_IRQn);
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NVIC_SetVector(RTC3_IRQn, (uint32_t)overflow_handler);
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NVIC_EnableIRQ(RTC3_IRQn);
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@ -90,6 +85,12 @@ void rtc_init(void)
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MXC_RTCTMR->ctrl |= MXC_F_RTC_CTRL_ENABLE;
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}
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//******************************************************************************
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void lp_ticker_init(void)
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{
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rtc_init();
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}
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//******************************************************************************
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void rtc_free(void)
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{
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@ -118,73 +119,104 @@ int rtc_isenabled(void)
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//******************************************************************************
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time_t rtc_read(void)
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{
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unsigned int shift_amt;
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uint32_t ovf_cnt_1, ovf_cnt_2, timer_cnt;
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// Account for a change in the default prescaler
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shift_amt = MXC_E_RTC_PRESCALE_DIV_2_12 - MXC_RTCTMR->prescale;
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uint32_t ovf1, ovf2;
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// Ensure coherency between overflow_cnt and timer
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do {
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ovf_cnt_1 = overflow_cnt;
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ovf1 = MXC_RTCTMR->flags & MXC_F_RTC_FLAGS_OVERFLOW;
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timer_cnt = MXC_RTCTMR->timer;
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ovf2 = MXC_RTCTMR->flags & MXC_F_RTC_FLAGS_OVERFLOW;
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ovf_cnt_2 = overflow_cnt;
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} while (ovf_cnt_1 != ovf_cnt_2);
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} while ((ovf_cnt_1 != ovf_cnt_2) || (ovf1 != ovf2));
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return (timer_cnt >> shift_amt) + (ovf_cnt_1 << (32 - shift_amt));
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// Account for an unserviced interrupt
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if (ovf1) {
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ovf_cnt_1++;
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}
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return (timer_cnt >> SHIFT_AMT) + (ovf_cnt_1 << (32 - SHIFT_AMT));
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}
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//******************************************************************************
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uint64_t rtc_read_us(void)
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static uint64_t rtc_read64(void)
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{
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unsigned int shift_amt;
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uint32_t ovf_cnt_1, ovf_cnt_2, timer_cnt;
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uint64_t currentUs;
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// Account for a change in the default prescaler
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shift_amt = MXC_E_RTC_PRESCALE_DIV_2_12 - MXC_RTCTMR->prescale;
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uint32_t ovf1, ovf2;
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uint64_t current_us;
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// Ensure coherency between overflow_cnt and timer
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do {
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ovf_cnt_1 = overflow_cnt;
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ovf1 = MXC_RTCTMR->flags & MXC_F_RTC_FLAGS_OVERFLOW;
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timer_cnt = MXC_RTCTMR->timer;
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ovf2 = MXC_RTCTMR->flags & MXC_F_RTC_FLAGS_OVERFLOW;
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ovf_cnt_2 = overflow_cnt;
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} while (ovf_cnt_1 != ovf_cnt_2);
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} while ((ovf_cnt_1 != ovf_cnt_2) || (ovf1 != ovf2));
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currentUs = (((uint64_t)timer_cnt * 1000000) >> shift_amt) + (((uint64_t)ovf_cnt_1 * 1000000) << (32 - shift_amt));
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// Account for an unserviced interrupt
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if (ovf1) {
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ovf_cnt_1++;
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}
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return currentUs;
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current_us = (((uint64_t)timer_cnt * 1000000) >> SHIFT_AMT) + (((uint64_t)ovf_cnt_1 * 1000000) << (32 - SHIFT_AMT));
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return current_us;
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}
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//******************************************************************************
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void rtc_write(time_t t)
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{
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// Account for a change in the default prescaler
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unsigned int shift_amt = MXC_E_RTC_PRESCALE_DIV_2_12 - MXC_RTCTMR->prescale;
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MXC_RTCTMR->ctrl &= ~MXC_F_RTC_CTRL_ENABLE; // disable the timer while updating
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MXC_RTCTMR->timer = t << shift_amt;
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overflow_cnt = t >> (32 - shift_amt);
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MXC_RTCTMR->timer = t << SHIFT_AMT;
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overflow_cnt = t >> (32 - SHIFT_AMT);
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MXC_RTCTMR->ctrl |= MXC_F_RTC_CTRL_ENABLE; // enable the timer while updating
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}
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//******************************************************************************
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void rtc_set_wakeup(uint64_t wakeupUs)
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void lp_ticker_set_interrupt(timestamp_t timestamp)
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{
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// Account for a change in the default prescaler
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unsigned int shift_amt = MXC_E_RTC_PRESCALE_DIV_2_12 - MXC_RTCTMR->prescale;
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// Note: interrupts are disabled before this function is called.
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// Disable the alarm while it is prepared
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MXC_RTCTMR->inten &= ~MXC_F_RTC_INTEN_COMP0;
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MXC_RTCTMR->flags = MXC_F_RTC_FLAGS_COMP0; // clear interrupt
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overflow_alarm = (wakeupUs >> (32 - shift_amt)) / 1000000;
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if (overflow_alarm == overflow_cnt) {
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MXC_RTCTMR->comp[0] = (wakeupUs << shift_amt) / 1000000;
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MXC_RTCTMR->inten |= MXC_F_RTC_INTEN_COMP0;
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uint64_t curr_ts64 = rtc_read64();
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uint64_t ts64 = (uint64_t)timestamp | (curr_ts64 & 0xFFFFFFFF00000000ULL);
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if (ts64 < curr_ts64) {
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if (ts64 < (curr_ts64 - 1000)) {
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ts64 += 0x100000000ULL;
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} else {
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// This event has already occurred. Set the alarm to expire immediately.
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MXC_RTCTMR->comp[0] = MXC_RTCTMR->timer + 2;
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MXC_RTCTMR->inten |= MXC_F_RTC_INTEN_COMP0;
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return;
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}
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}
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MXC_RTCTMR->comp[0] = (ts64 << SHIFT_AMT) / 1000000;
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MXC_RTCTMR->inten |= MXC_F_RTC_INTEN_COMP0;
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// Enable wakeup from RTC
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MXC_PWRSEQ->msk_flags &= ~(MXC_F_PWRSEQ_MSK_FLAGS_RTC_ROLLOVER | MXC_F_PWRSEQ_MSK_FLAGS_RTC_CMPR0);
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}
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//******************************************************************************
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inline void lp_ticker_disable_interrupt(void)
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{
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MXC_RTCTMR->inten &= ~MXC_F_RTC_INTEN_COMP0;
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}
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//******************************************************************************
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inline void lp_ticker_clear_interrupt(void)
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{
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MXC_RTCTMR->flags = MXC_F_RTC_FLAGS_ASYNC_CLR_FLAGS;
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}
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//******************************************************************************
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inline uint32_t lp_ticker_read(void)
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{
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return rtc_read64();
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}
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@ -30,22 +30,14 @@
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* ownership rights.
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*******************************************************************************
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*/
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#include "sleep_api.h"
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#include "us_ticker_api.h"
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#include "cmsis.h"
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#include "pwrman_regs.h"
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#include "pwrseq_regs.h"
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#include "ioman_regs.h"
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#include "rtc_regs.h"
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#define MIN_DEEP_SLEEP_US 500
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uint64_t rtc_read_us(void);
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void rtc_set_wakeup(uint64_t wakeupUs);
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void us_ticker_deinit(void);
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void us_ticker_set(timestamp_t timestamp);
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static mxc_uart_regs_t *stdio_uart = (mxc_uart_regs_t*)STDIO_UART;
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// Normal wait mode
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@ -80,38 +72,11 @@ static void clearAllGPIOWUD(void)
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// Low-power stop mode
|
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void deepsleep(void)
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{
|
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uint64_t sleepStartRtcUs;
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uint32_t sleepStartTickerUs;
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int32_t sleepDurationUs;
|
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uint64_t sleepEndRtcUs;
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uint64_t elapsedUs;
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__disable_irq();
|
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// Wait for all STDIO characters to be sent. The UART clock will stop.
|
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while (stdio_uart->status & MXC_F_UART_STATUS_TX_BUSY);
|
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|
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// Record the current times
|
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sleepStartRtcUs = rtc_read_us();
|
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sleepStartTickerUs = us_ticker_read();
|
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|
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// Get the next mbed timer expiration
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timestamp_t next_event = 0;
|
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us_ticker_get_next_timestamp(&next_event);
|
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sleepDurationUs = next_event - sleepStartTickerUs;
|
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|
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if (sleepDurationUs < MIN_DEEP_SLEEP_US) {
|
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/* The next wakeup is too soon. */
|
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__enable_irq();
|
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return;
|
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}
|
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|
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// Disable the us_ticker. It won't be clocked in DeepSleep
|
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us_ticker_deinit();
|
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|
||||
// Prepare to wakeup from the RTC
|
||||
rtc_set_wakeup(sleepStartRtcUs + sleepDurationUs);
|
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|
||||
// Prepare for LP1
|
||||
uint32_t reg0 = MXC_PWRSEQ->reg0;
|
||||
reg0 &= ~MXC_F_PWRSEQ_REG0_PWR_SVM3EN_SLP; // disable VDD3 SVM during sleep mode
|
||||
|
|
@ -151,19 +116,8 @@ void deepsleep(void)
|
|||
// Woke up from LP1
|
||||
|
||||
// The RTC timer does not update until the next tick
|
||||
uint64_t tempUs = rtc_read_us();
|
||||
do {
|
||||
sleepEndRtcUs = rtc_read_us();
|
||||
} while(sleepEndRtcUs == tempUs);
|
||||
|
||||
// Get the elapsed time from the RTC. Wakeup could have been from some other event.
|
||||
elapsedUs = sleepEndRtcUs - sleepStartRtcUs;
|
||||
|
||||
// Update the us_ticker. It was not clocked during DeepSleep
|
||||
us_ticker_init();
|
||||
us_ticker_set(sleepStartTickerUs + elapsedUs);
|
||||
us_ticker_get_next_timestamp(&next_event);
|
||||
us_ticker_set_interrupt(next_event);
|
||||
uint32_t temp = MXC_RTCTMR->timer;
|
||||
while (MXC_RTCTMR->timer == temp);
|
||||
|
||||
__enable_irq();
|
||||
}
|
||||
|
|
|
|||
|
|
@ -30,7 +30,7 @@
|
|||
* ownership rights.
|
||||
*******************************************************************************
|
||||
*/
|
||||
|
||||
|
||||
#include "mbed_error.h"
|
||||
#include "us_ticker_api.h"
|
||||
#include "PeripheralNames.h"
|
||||
|
|
@ -53,7 +53,7 @@ static inline void inc_current_cnt(uint32_t inc) {
|
|||
|
||||
// Overflow the ticker when the us ticker overflows
|
||||
current_cnt += inc;
|
||||
if(current_cnt > MAX_TICK_VAL) {
|
||||
if (current_cnt > MAX_TICK_VAL) {
|
||||
current_cnt -= (MAX_TICK_VAL + 1);
|
||||
}
|
||||
}
|
||||
|
|
@ -64,7 +64,7 @@ static inline int event_passed(uint64_t current, uint64_t event) {
|
|||
// Determine if the event has already happened.
|
||||
// If the event is behind the current ticker, within a window,
|
||||
// then the event has already happened.
|
||||
if(((current < tick_win) && ((event < current) ||
|
||||
if (((current < tick_win) && ((event < current) ||
|
||||
(event > (MAX_TICK_VAL - (tick_win - current))))) ||
|
||||
((event < current) && (event > (current - tick_win)))) {
|
||||
return 1;
|
||||
|
|
@ -169,7 +169,7 @@ uint32_t us_ticker_read(void)
|
|||
{
|
||||
uint64_t current_cnt1, current_cnt2;
|
||||
uint32_t term_cnt, tmr_cnt;
|
||||
int intfl1, intfl2;
|
||||
uint32_t intfl1, intfl2;
|
||||
|
||||
if (!us_ticker_inited)
|
||||
us_ticker_init();
|
||||
|
|
@ -184,6 +184,7 @@ uint32_t us_ticker_read(void)
|
|||
current_cnt2 = current_cnt;
|
||||
} while ((current_cnt1 != current_cnt2) || (intfl1 != intfl2));
|
||||
|
||||
// Account for an unserviced interrupt
|
||||
if (intfl1) {
|
||||
current_cnt1 += term_cnt;
|
||||
}
|
||||
|
|
@ -197,6 +198,7 @@ uint32_t us_ticker_read(void)
|
|||
void us_ticker_set_interrupt(timestamp_t timestamp)
|
||||
{
|
||||
// Note: interrupts are disabled before this function is called.
|
||||
|
||||
US_TIMER->ctrl &= ~MXC_F_TMR_CTRL_ENABLE0; // disable timer
|
||||
|
||||
if (US_TIMER->intfl) {
|
||||
|
|
|
|||
|
|
@ -64,6 +64,8 @@
|
|||
|
||||
#define DEVICE_ERROR_PATTERN 1
|
||||
|
||||
#define DEVICE_LOWPOWERTIMER 1
|
||||
|
||||
#define DEVICE_CAN 0
|
||||
#define DEVICE_ETHERNET 0
|
||||
|
||||
|
|
|
|||
|
|
@ -32,56 +32,51 @@
|
|||
*/
|
||||
|
||||
#include "rtc_api.h"
|
||||
#include "lp_ticker_api.h"
|
||||
#include "cmsis.h"
|
||||
#include "rtc_regs.h"
|
||||
#include "pwrseq_regs.h"
|
||||
#include "clkman_regs.h"
|
||||
|
||||
#define PRESCALE_VAL MXC_E_RTC_PRESCALE_DIV_2_0 // Set the divider for the 4kHz clock
|
||||
#define SHIFT_AMT (MXC_E_RTC_PRESCALE_DIV_2_12 - PRESCALE_VAL)
|
||||
|
||||
static int rtc_inited = 0;
|
||||
static volatile uint32_t overflow_cnt = 0;
|
||||
static uint32_t overflow_alarm = 0;
|
||||
|
||||
static uint64_t rtc_read64(void);
|
||||
|
||||
//******************************************************************************
|
||||
static void overflow_handler(void)
|
||||
{
|
||||
MXC_RTCTMR->flags = MXC_F_RTC_FLAGS_ASYNC_CLR_FLAGS;
|
||||
MXC_RTCTMR->flags = MXC_F_RTC_FLAGS_OVERFLOW;
|
||||
overflow_cnt++;
|
||||
|
||||
if (overflow_cnt == overflow_alarm) {
|
||||
// Enable the comparator interrupt for the alarm
|
||||
MXC_RTCTMR->inten |= MXC_F_RTC_INTEN_COMP0;
|
||||
}
|
||||
}
|
||||
|
||||
//******************************************************************************
|
||||
static void alarm_handler(void)
|
||||
{
|
||||
MXC_RTCTMR->inten &= ~MXC_F_RTC_INTEN_COMP0;
|
||||
MXC_RTCTMR->flags = MXC_F_RTC_FLAGS_ASYNC_CLR_FLAGS;
|
||||
}
|
||||
|
||||
//******************************************************************************
|
||||
void rtc_init(void)
|
||||
{
|
||||
if(rtc_inited) {
|
||||
if (rtc_inited) {
|
||||
return;
|
||||
}
|
||||
rtc_inited = 1;
|
||||
|
||||
overflow_cnt = 0;
|
||||
|
||||
// Enable the clock to the synchronizer
|
||||
MXC_CLKMAN->clk_ctrl_13_rtc_int_sync = MXC_E_CLKMAN_CLK_SCALE_ENABLED;
|
||||
|
||||
// Enable the clock to the RTC
|
||||
MXC_PWRSEQ->reg0 |= MXC_F_PWRSEQ_REG0_PWR_RTCEN_RUN;
|
||||
|
||||
// Set the divider from the 4kHz clock
|
||||
MXC_RTCTMR->prescale = MXC_E_RTC_PRESCALE_DIV_2_0;
|
||||
// Set the clock divider
|
||||
MXC_RTCTMR->prescale = PRESCALE_VAL;
|
||||
|
||||
// Enable the overflow interrupt
|
||||
MXC_RTCTMR->inten |= MXC_F_RTC_FLAGS_OVERFLOW;
|
||||
|
||||
// Prepare interrupt handlers
|
||||
NVIC_SetVector(RTC0_IRQn, (uint32_t)alarm_handler);
|
||||
NVIC_SetVector(RTC0_IRQn, (uint32_t)lp_ticker_irq_handler);
|
||||
NVIC_EnableIRQ(RTC0_IRQn);
|
||||
NVIC_SetVector(RTC3_IRQn, (uint32_t)overflow_handler);
|
||||
NVIC_EnableIRQ(RTC3_IRQn);
|
||||
|
|
@ -90,6 +85,12 @@ void rtc_init(void)
|
|||
MXC_RTCTMR->ctrl |= MXC_F_RTC_CTRL_ENABLE;
|
||||
}
|
||||
|
||||
//******************************************************************************
|
||||
void lp_ticker_init(void)
|
||||
{
|
||||
rtc_init();
|
||||
}
|
||||
|
||||
//******************************************************************************
|
||||
void rtc_free(void)
|
||||
{
|
||||
|
|
@ -118,73 +119,104 @@ int rtc_isenabled(void)
|
|||
//******************************************************************************
|
||||
time_t rtc_read(void)
|
||||
{
|
||||
unsigned int shift_amt;
|
||||
uint32_t ovf_cnt_1, ovf_cnt_2, timer_cnt;
|
||||
|
||||
// Account for a change in the default prescaler
|
||||
shift_amt = MXC_E_RTC_PRESCALE_DIV_2_12 - MXC_RTCTMR->prescale;
|
||||
uint32_t ovf1, ovf2;
|
||||
|
||||
// Ensure coherency between overflow_cnt and timer
|
||||
do {
|
||||
ovf_cnt_1 = overflow_cnt;
|
||||
ovf1 = MXC_RTCTMR->flags & MXC_F_RTC_FLAGS_OVERFLOW;
|
||||
timer_cnt = MXC_RTCTMR->timer;
|
||||
ovf2 = MXC_RTCTMR->flags & MXC_F_RTC_FLAGS_OVERFLOW;
|
||||
ovf_cnt_2 = overflow_cnt;
|
||||
} while (ovf_cnt_1 != ovf_cnt_2);
|
||||
} while ((ovf_cnt_1 != ovf_cnt_2) || (ovf1 != ovf2));
|
||||
|
||||
return (timer_cnt >> shift_amt) + (ovf_cnt_1 << (32 - shift_amt));
|
||||
// Account for an unserviced interrupt
|
||||
if (ovf1) {
|
||||
ovf_cnt_1++;
|
||||
}
|
||||
|
||||
return (timer_cnt >> SHIFT_AMT) + (ovf_cnt_1 << (32 - SHIFT_AMT));
|
||||
}
|
||||
|
||||
//******************************************************************************
|
||||
uint64_t rtc_read_us(void)
|
||||
static uint64_t rtc_read64(void)
|
||||
{
|
||||
unsigned int shift_amt;
|
||||
uint32_t ovf_cnt_1, ovf_cnt_2, timer_cnt;
|
||||
uint64_t currentUs;
|
||||
|
||||
// Account for a change in the default prescaler
|
||||
shift_amt = MXC_E_RTC_PRESCALE_DIV_2_12 - MXC_RTCTMR->prescale;
|
||||
uint32_t ovf1, ovf2;
|
||||
uint64_t current_us;
|
||||
|
||||
// Ensure coherency between overflow_cnt and timer
|
||||
do {
|
||||
ovf_cnt_1 = overflow_cnt;
|
||||
ovf1 = MXC_RTCTMR->flags & MXC_F_RTC_FLAGS_OVERFLOW;
|
||||
timer_cnt = MXC_RTCTMR->timer;
|
||||
ovf2 = MXC_RTCTMR->flags & MXC_F_RTC_FLAGS_OVERFLOW;
|
||||
ovf_cnt_2 = overflow_cnt;
|
||||
} while (ovf_cnt_1 != ovf_cnt_2);
|
||||
} while ((ovf_cnt_1 != ovf_cnt_2) || (ovf1 != ovf2));
|
||||
|
||||
currentUs = (((uint64_t)timer_cnt * 1000000) >> shift_amt) + (((uint64_t)ovf_cnt_1 * 1000000) << (32 - shift_amt));
|
||||
// Account for an unserviced interrupt
|
||||
if (ovf1) {
|
||||
ovf_cnt_1++;
|
||||
}
|
||||
|
||||
return currentUs;
|
||||
current_us = (((uint64_t)timer_cnt * 1000000) >> SHIFT_AMT) + (((uint64_t)ovf_cnt_1 * 1000000) << (32 - SHIFT_AMT));
|
||||
|
||||
return current_us;
|
||||
}
|
||||
|
||||
//******************************************************************************
|
||||
void rtc_write(time_t t)
|
||||
{
|
||||
// Account for a change in the default prescaler
|
||||
unsigned int shift_amt = MXC_E_RTC_PRESCALE_DIV_2_12 - MXC_RTCTMR->prescale;
|
||||
|
||||
MXC_RTCTMR->ctrl &= ~MXC_F_RTC_CTRL_ENABLE; // disable the timer while updating
|
||||
MXC_RTCTMR->timer = t << shift_amt;
|
||||
overflow_cnt = t >> (32 - shift_amt);
|
||||
MXC_RTCTMR->timer = t << SHIFT_AMT;
|
||||
overflow_cnt = t >> (32 - SHIFT_AMT);
|
||||
MXC_RTCTMR->ctrl |= MXC_F_RTC_CTRL_ENABLE; // enable the timer while updating
|
||||
}
|
||||
|
||||
//******************************************************************************
|
||||
void rtc_set_wakeup(uint64_t wakeupUs)
|
||||
void lp_ticker_set_interrupt(timestamp_t timestamp)
|
||||
{
|
||||
// Account for a change in the default prescaler
|
||||
unsigned int shift_amt = MXC_E_RTC_PRESCALE_DIV_2_12 - MXC_RTCTMR->prescale;
|
||||
// Note: interrupts are disabled before this function is called.
|
||||
|
||||
// Disable the alarm while it is prepared
|
||||
MXC_RTCTMR->inten &= ~MXC_F_RTC_INTEN_COMP0;
|
||||
MXC_RTCTMR->flags = MXC_F_RTC_FLAGS_COMP0; // clear interrupt
|
||||
|
||||
overflow_alarm = (wakeupUs >> (32 - shift_amt)) / 1000000;
|
||||
|
||||
if (overflow_alarm == overflow_cnt) {
|
||||
MXC_RTCTMR->comp[0] = (wakeupUs << shift_amt) / 1000000;
|
||||
MXC_RTCTMR->inten |= MXC_F_RTC_INTEN_COMP0;
|
||||
uint64_t curr_ts64 = rtc_read64();
|
||||
uint64_t ts64 = (uint64_t)timestamp | (curr_ts64 & 0xFFFFFFFF00000000ULL);
|
||||
if (ts64 < curr_ts64) {
|
||||
if (ts64 < (curr_ts64 - 1000)) {
|
||||
ts64 += 0x100000000ULL;
|
||||
} else {
|
||||
// This event has already occurred. Set the alarm to expire immediately.
|
||||
MXC_RTCTMR->comp[0] = MXC_RTCTMR->timer + 2;
|
||||
MXC_RTCTMR->inten |= MXC_F_RTC_INTEN_COMP0;
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
MXC_RTCTMR->comp[0] = (ts64 << SHIFT_AMT) / 1000000;
|
||||
MXC_RTCTMR->inten |= MXC_F_RTC_INTEN_COMP0;
|
||||
|
||||
// Enable wakeup from RTC
|
||||
MXC_PWRSEQ->msk_flags &= ~(MXC_F_PWRSEQ_MSK_FLAGS_RTC_ROLLOVER | MXC_F_PWRSEQ_MSK_FLAGS_RTC_CMPR0);
|
||||
}
|
||||
|
||||
//******************************************************************************
|
||||
inline void lp_ticker_disable_interrupt(void)
|
||||
{
|
||||
MXC_RTCTMR->inten &= ~MXC_F_RTC_INTEN_COMP0;
|
||||
}
|
||||
|
||||
//******************************************************************************
|
||||
inline void lp_ticker_clear_interrupt(void)
|
||||
{
|
||||
MXC_RTCTMR->flags = MXC_F_RTC_FLAGS_ASYNC_CLR_FLAGS;
|
||||
}
|
||||
|
||||
//******************************************************************************
|
||||
inline uint32_t lp_ticker_read(void)
|
||||
{
|
||||
return rtc_read64();
|
||||
}
|
||||
|
|
|
|||
|
|
@ -30,22 +30,14 @@
|
|||
* ownership rights.
|
||||
*******************************************************************************
|
||||
*/
|
||||
|
||||
|
||||
#include "sleep_api.h"
|
||||
#include "us_ticker_api.h"
|
||||
#include "cmsis.h"
|
||||
#include "pwrman_regs.h"
|
||||
#include "pwrseq_regs.h"
|
||||
#include "ioman_regs.h"
|
||||
#include "rtc_regs.h"
|
||||
|
||||
#define MIN_DEEP_SLEEP_US 500
|
||||
|
||||
uint64_t rtc_read_us(void);
|
||||
void rtc_set_wakeup(uint64_t wakeupUs);
|
||||
void us_ticker_deinit(void);
|
||||
void us_ticker_set(timestamp_t timestamp);
|
||||
|
||||
static mxc_uart_regs_t *stdio_uart = (mxc_uart_regs_t*)STDIO_UART;
|
||||
|
||||
// Normal wait mode
|
||||
|
|
@ -80,38 +72,11 @@ static void clearAllGPIOWUD(void)
|
|||
// Low-power stop mode
|
||||
void deepsleep(void)
|
||||
{
|
||||
uint64_t sleepStartRtcUs;
|
||||
uint32_t sleepStartTickerUs;
|
||||
int32_t sleepDurationUs;
|
||||
uint64_t sleepEndRtcUs;
|
||||
uint64_t elapsedUs;
|
||||
|
||||
__disable_irq();
|
||||
|
||||
// Wait for all STDIO characters to be sent. The UART clock will stop.
|
||||
while (stdio_uart->status & MXC_F_UART_STATUS_TX_BUSY);
|
||||
|
||||
// Record the current times
|
||||
sleepStartRtcUs = rtc_read_us();
|
||||
sleepStartTickerUs = us_ticker_read();
|
||||
|
||||
// Get the next mbed timer expiration
|
||||
timestamp_t next_event = 0;
|
||||
us_ticker_get_next_timestamp(&next_event);
|
||||
sleepDurationUs = next_event - sleepStartTickerUs;
|
||||
|
||||
if (sleepDurationUs < MIN_DEEP_SLEEP_US) {
|
||||
/* The next wakeup is too soon. */
|
||||
__enable_irq();
|
||||
return;
|
||||
}
|
||||
|
||||
// Disable the us_ticker. It won't be clocked in DeepSleep
|
||||
us_ticker_deinit();
|
||||
|
||||
// Prepare to wakeup from the RTC
|
||||
rtc_set_wakeup(sleepStartRtcUs + sleepDurationUs);
|
||||
|
||||
// Prepare for LP1
|
||||
uint32_t reg0 = MXC_PWRSEQ->reg0;
|
||||
reg0 &= ~MXC_F_PWRSEQ_REG0_PWR_SVM3EN_SLP; // disable VDD3 SVM during sleep mode
|
||||
|
|
@ -151,19 +116,8 @@ void deepsleep(void)
|
|||
// Woke up from LP1
|
||||
|
||||
// The RTC timer does not update until the next tick
|
||||
uint64_t tempUs = rtc_read_us();
|
||||
do {
|
||||
sleepEndRtcUs = rtc_read_us();
|
||||
} while(sleepEndRtcUs == tempUs);
|
||||
|
||||
// Get the elapsed time from the RTC. Wakeup could have been from some other event.
|
||||
elapsedUs = sleepEndRtcUs - sleepStartRtcUs;
|
||||
|
||||
// Update the us_ticker. It was not clocked during DeepSleep
|
||||
us_ticker_init();
|
||||
us_ticker_set(sleepStartTickerUs + elapsedUs);
|
||||
us_ticker_get_next_timestamp(&next_event);
|
||||
us_ticker_set_interrupt(next_event);
|
||||
uint32_t temp = MXC_RTCTMR->timer;
|
||||
while (MXC_RTCTMR->timer == temp);
|
||||
|
||||
__enable_irq();
|
||||
}
|
||||
|
|
|
|||
|
|
@ -30,7 +30,7 @@
|
|||
* ownership rights.
|
||||
*******************************************************************************
|
||||
*/
|
||||
|
||||
|
||||
#include "mbed_error.h"
|
||||
#include "us_ticker_api.h"
|
||||
#include "PeripheralNames.h"
|
||||
|
|
@ -53,7 +53,7 @@ static inline void inc_current_cnt(uint32_t inc) {
|
|||
|
||||
// Overflow the ticker when the us ticker overflows
|
||||
current_cnt += inc;
|
||||
if(current_cnt > MAX_TICK_VAL) {
|
||||
if (current_cnt > MAX_TICK_VAL) {
|
||||
current_cnt -= (MAX_TICK_VAL + 1);
|
||||
}
|
||||
}
|
||||
|
|
@ -64,7 +64,7 @@ static inline int event_passed(uint64_t current, uint64_t event) {
|
|||
// Determine if the event has already happened.
|
||||
// If the event is behind the current ticker, within a window,
|
||||
// then the event has already happened.
|
||||
if(((current < tick_win) && ((event < current) ||
|
||||
if (((current < tick_win) && ((event < current) ||
|
||||
(event > (MAX_TICK_VAL - (tick_win - current))))) ||
|
||||
((event < current) && (event > (current - tick_win)))) {
|
||||
return 1;
|
||||
|
|
@ -169,7 +169,7 @@ uint32_t us_ticker_read(void)
|
|||
{
|
||||
uint64_t current_cnt1, current_cnt2;
|
||||
uint32_t term_cnt, tmr_cnt;
|
||||
int intfl1, intfl2;
|
||||
uint32_t intfl1, intfl2;
|
||||
|
||||
if (!us_ticker_inited)
|
||||
us_ticker_init();
|
||||
|
|
@ -184,6 +184,7 @@ uint32_t us_ticker_read(void)
|
|||
current_cnt2 = current_cnt;
|
||||
} while ((current_cnt1 != current_cnt2) || (intfl1 != intfl2));
|
||||
|
||||
// Account for an unserviced interrupt
|
||||
if (intfl1) {
|
||||
current_cnt1 += term_cnt;
|
||||
}
|
||||
|
|
@ -197,6 +198,7 @@ uint32_t us_ticker_read(void)
|
|||
void us_ticker_set_interrupt(timestamp_t timestamp)
|
||||
{
|
||||
// Note: interrupts are disabled before this function is called.
|
||||
|
||||
US_TIMER->ctrl &= ~MXC_F_TMR_CTRL_ENABLE0; // disable timer
|
||||
|
||||
if (US_TIMER->intfl) {
|
||||
|
|
|
|||
|
|
@ -177,12 +177,21 @@ void pin_mode(PinName pin, PinMode mode)
|
|||
if (pin_index < 8) {
|
||||
if ((gpio->CRL & (0x03 << (pin_index * 4))) == 0) { // MODE bits = Input mode
|
||||
gpio->CRL |= (0x08 << (pin_index * 4)); // Set pull-up / pull-down
|
||||
gpio->CRL &= ~(0x08 << ((pin_index * 4)-1)); // ENSURES GPIOx_CRL.CNFx.bit0 = 0
|
||||
}
|
||||
} else {
|
||||
if ((gpio->CRH & (0x03 << ((pin_index % 8) * 4))) == 0) { // MODE bits = Input mode
|
||||
gpio->CRH |= (0x08 << ((pin_index % 8) * 4)); // Set pull-up / pull-down
|
||||
gpio->CRH &= ~(0x08 << (((pin_index % 8) * 4)-1)); // ENSURES GPIOx_CRH.CNFx.bit0 = 0
|
||||
}
|
||||
}
|
||||
// Now it's time to setup properly if pullup or pulldown. This is done in ODR register:
|
||||
// set pull-up => bit=1, set pull-down => bit = 0
|
||||
if (mode == PullUp) {
|
||||
gpio->ODR |= (0x01 << (pin_index)); // Set pull-up
|
||||
} else{
|
||||
gpio->ODR &= ~(0x01 << (pin_index)); // Set pull-down
|
||||
}
|
||||
break;
|
||||
case OpenDrain:
|
||||
// Set open-drain for Output mode (General Purpose or Alternate Function)
|
||||
|
|
|
|||
|
|
@ -50,6 +50,11 @@
|
|||
|
||||
#define DEVICE_LOWPOWERTIMER 1
|
||||
|
||||
// Redefine OPEN_MAX from sys_limits.h to save on RAM.
|
||||
// Effect: maximum amount of file handlers = OPEN_MAX
|
||||
// This is not going to have an impact, since this is a RAM-limited part anyway.
|
||||
#define OPEN_MAX 24
|
||||
|
||||
#include "objects.h"
|
||||
#include "Modules.h"
|
||||
#include "device_peripherals.h"
|
||||
|
|
|
|||
|
|
@ -50,6 +50,11 @@
|
|||
|
||||
#define DEVICE_LOWPOWERTIMER 1
|
||||
|
||||
// Redefine OPEN_MAX from sys_limits.h to save on RAM.
|
||||
// Effect: maximum amount of file handlers = OPEN_MAX
|
||||
// This is not going to have an impact, since this is a RAM-limited part anyway.
|
||||
#define OPEN_MAX 8
|
||||
|
||||
#include "objects.h"
|
||||
#include "Modules.h"
|
||||
#include "device_peripherals.h"
|
||||
|
|
|
|||
|
|
@ -23,7 +23,7 @@ OBJDUMP = $(GCC_BIN)arm-none-eabi-objdump
|
|||
SIZE = $(GCC_BIN)arm-none-eabi-size
|
||||
|
||||
CPU = -mcpu=cortex-m3 -mthumb
|
||||
CC_FLAGS = $(CPU) -c -g -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections
|
||||
CC_FLAGS = $(CPU) -c -g -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections -fno-common -fomit-frame-pointer
|
||||
CC_FLAGS += -MMD -MP
|
||||
|
||||
ifeq ($(DEBUG), 1)
|
||||
|
|
@ -53,7 +53,7 @@ clean:
|
|||
$(CC) $(CC_FLAGS) $(CC_SYMBOLS) -std=gnu99 $(INCLUDE_PATHS) -o $@ $<
|
||||
|
||||
.cpp.o:
|
||||
$(CPP) $(CC_FLAGS) $(CC_SYMBOLS) -std=gnu++98 $(INCLUDE_PATHS) -o $@ $<
|
||||
$(CPP) $(CC_FLAGS) $(CC_SYMBOLS) -fno-rtti -std=gnu++98 $(INCLUDE_PATHS) -o $@ $<
|
||||
|
||||
|
||||
$(OBJ_FOLDER)$(PROJECT).axf: $(OBJECTS) $(SYS_OBJECTS)
|
||||
|
|
|
|||
|
|
@ -23,7 +23,7 @@ OBJDUMP = $(GCC_BIN)arm-none-eabi-objdump
|
|||
SIZE = $(GCC_BIN)arm-none-eabi-size
|
||||
|
||||
CPU = -mcpu=cortex-m0plus -mthumb
|
||||
CC_FLAGS = $(CPU) -c -g -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections
|
||||
CC_FLAGS = $(CPU) -c -g -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections -fno-common -fomit-frame-pointer
|
||||
CC_FLAGS += -MMD -MP
|
||||
|
||||
ifeq ($(DEBUG), 1)
|
||||
|
|
@ -53,7 +53,7 @@ clean:
|
|||
$(CC) $(CC_FLAGS) $(CC_SYMBOLS) -std=gnu99 $(INCLUDE_PATHS) -o $@ $<
|
||||
|
||||
.cpp.o:
|
||||
$(CPP) $(CC_FLAGS) $(CC_SYMBOLS) -std=gnu++98 $(INCLUDE_PATHS) -o $@ $<
|
||||
$(CPP) $(CC_FLAGS) $(CC_SYMBOLS) -fno-rtti -std=gnu++98 $(INCLUDE_PATHS) -o $@ $<
|
||||
|
||||
|
||||
$(OBJ_FOLDER)$(PROJECT).axf: $(OBJECTS) $(SYS_OBJECTS)
|
||||
|
|
|
|||
|
|
@ -23,7 +23,7 @@ OBJDUMP = $(GCC_BIN)arm-none-eabi-objdump
|
|||
SIZE = $(GCC_BIN)arm-none-eabi-size
|
||||
|
||||
CPU = -mcpu=cortex-m3 -mthumb
|
||||
CC_FLAGS = $(CPU) -c -g -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections
|
||||
CC_FLAGS = $(CPU) -c -g -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections -fno-common -fomit-frame-pointer
|
||||
CC_FLAGS += -MMD -MP
|
||||
|
||||
ifeq ($(DEBUG), 1)
|
||||
|
|
@ -53,7 +53,7 @@ clean:
|
|||
$(CC) $(CC_FLAGS) $(CC_SYMBOLS) -std=gnu99 $(INCLUDE_PATHS) -o $@ $<
|
||||
|
||||
.cpp.o:
|
||||
$(CPP) $(CC_FLAGS) $(CC_SYMBOLS) -std=gnu++98 $(INCLUDE_PATHS) -o $@ $<
|
||||
$(CPP) $(CC_FLAGS) $(CC_SYMBOLS) -fno-rtti -std=gnu++98 $(INCLUDE_PATHS) -o $@ $<
|
||||
|
||||
|
||||
$(OBJ_FOLDER)$(PROJECT).axf: $(OBJECTS) $(SYS_OBJECTS)
|
||||
|
|
|
|||
|
|
@ -23,7 +23,7 @@ OBJDUMP = $(GCC_BIN)arm-none-eabi-objdump
|
|||
SIZE = $(GCC_BIN)arm-none-eabi-size
|
||||
|
||||
CPU = -mcpu=cortex-m3 -mthumb
|
||||
CC_FLAGS = $(CPU) -c -g -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections
|
||||
CC_FLAGS = $(CPU) -c -g -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections -fno-common -fomit-frame-pointer
|
||||
CC_FLAGS += -MMD -MP
|
||||
|
||||
ifeq ($(DEBUG), 1)
|
||||
|
|
@ -53,7 +53,7 @@ clean:
|
|||
$(CC) $(CC_FLAGS) $(CC_SYMBOLS) -std=gnu99 $(INCLUDE_PATHS) -o $@ $<
|
||||
|
||||
.cpp.o:
|
||||
$(CPP) $(CC_FLAGS) $(CC_SYMBOLS) -std=gnu++98 $(INCLUDE_PATHS) -o $@ $<
|
||||
$(CPP) $(CC_FLAGS) $(CC_SYMBOLS) -fno-rtti -std=gnu++98 $(INCLUDE_PATHS) -o $@ $<
|
||||
|
||||
|
||||
$(OBJ_FOLDER)$(PROJECT).axf: $(OBJECTS) $(SYS_OBJECTS)
|
||||
|
|
|
|||
|
|
@ -23,7 +23,7 @@ OBJDUMP = $(GCC_BIN)arm-none-eabi-objdump
|
|||
SIZE = $(GCC_BIN)arm-none-eabi-size
|
||||
|
||||
CPU = -mcpu=cortex-m0plus -mthumb
|
||||
CC_FLAGS = $(CPU) -c -g -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections
|
||||
CC_FLAGS = $(CPU) -c -g -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections -fno-common -fomit-frame-pointer
|
||||
CC_FLAGS += -MMD -MP
|
||||
|
||||
ifeq ($(DEBUG), 1)
|
||||
|
|
@ -53,7 +53,7 @@ clean:
|
|||
$(CC) $(CC_FLAGS) $(CC_SYMBOLS) -std=gnu99 $(INCLUDE_PATHS) -o $@ $<
|
||||
|
||||
.cpp.o:
|
||||
$(CPP) $(CC_FLAGS) $(CC_SYMBOLS) -std=gnu++98 $(INCLUDE_PATHS) -o $@ $<
|
||||
$(CPP) $(CC_FLAGS) $(CC_SYMBOLS) -fno-rtti -std=gnu++98 $(INCLUDE_PATHS) -o $@ $<
|
||||
|
||||
|
||||
$(OBJ_FOLDER)$(PROJECT).axf: $(OBJECTS) $(SYS_OBJECTS)
|
||||
|
|
|
|||
|
|
@ -62,8 +62,10 @@
|
|||
<toolOption toolId="com.silabs.ide.si32.gcc.cdt.managedbuild.tool.gnu.c.linker.base" optionId="gnu.c.link.option.ldflags" value="-Wl,--wrap=main"/>
|
||||
<toolOption toolId="com.silabs.ide.si32.gcc.cdt.managedbuild.tool.gnu.cpp.linker.base" optionId="gnu.cpp.link.option.flags" value="-Wl,--wrap=main"/>
|
||||
{# For debug build, don't apply optimizations #}
|
||||
<toolOption toolId="com.silabs.ide.si32.gcc.cdt.managedbuild.tool.gnu.c.compiler.base" optionId="gnu.c.compiler.option.optimization.level" value="gnu.c.optimization.level.none"/>
|
||||
<toolOption toolId="com.silabs.ide.si32.gcc.cdt.managedbuild.tool.gnu.c.compiler.base" optionId="gnu.c.compiler.option.misc.other" value="-c -fmessage-length=0 -fno-rtti -fno-exceptions -fno-common -fomit-frame-pointer"/>
|
||||
<toolOption toolId="com.silabs.ide.si32.gcc.cdt.managedbuild.tool.gnu.cpp.compiler.base" optionId="gnu.cpp.compiler.option.optimization.level" value="gnu.cpp.compiler.optimization.level.none"/>
|
||||
<toolOption toolId="com.silabs.ide.si32.gcc.cdt.managedbuild.tool.gnu.cpp.compiler.base" optionId="gnu.cpp.compiler.option.other.other" value="-c -fmessage-length=0 "/>
|
||||
<toolOption toolId="com.silabs.ide.si32.gcc.cdt.managedbuild.tool.gnu.cpp.compiler.base" optionId="gnu.cpp.compiler.option.other.other" value="-c -fmessage-length=0 -fno-rtti -fno-exceptions -fno-common -fomit-frame-pointer"/>
|
||||
<toolOption toolId="com.silabs.ide.si32.gcc.cdt.managedbuild.tool.gnu.cpp.compiler.base" optionId="com.silabs.ide.si32.gcc.cdt.managedbuild.tool.gnu.cpp.compiler.misc.dialect" value="com.silabs.ide.si32.gcc.cdt.managedbuild.tool.gnu.cpp.compiler.misc.dialect.default"/>
|
||||
</configuration>
|
||||
<configuration name="com.silabs.ide.si32.gcc.release#com.silabs.ide.si32.gcc:4.8.3.20131129" label="GNU ARM v4.8.3 - Release" stockConfigCompatibility="com.silabs.ide.toolchain.core.release">
|
||||
|
|
@ -105,8 +107,10 @@
|
|||
<toolOption toolId="com.silabs.ide.si32.gcc.cdt.managedbuild.tool.gnu.c.linker.base" optionId="gnu.c.link.option.ldflags" value="-Wl,--wrap=main"/>
|
||||
<toolOption toolId="com.silabs.ide.si32.gcc.cdt.managedbuild.tool.gnu.cpp.linker.base" optionId="gnu.cpp.link.option.flags" value="-Wl,--wrap=main"/>
|
||||
{# Use optimize for size on release build #}
|
||||
<toolOption toolId="com.silabs.ide.si32.gcc.cdt.managedbuild.tool.gnu.c.compiler.base" optionId="gnu.c.compiler.option.optimization.level" value="gnu.c.optimization.level.size"/>
|
||||
<toolOption toolId="com.silabs.ide.si32.gcc.cdt.managedbuild.tool.gnu.c.compiler.base" optionId="gnu.c.compiler.option.misc.other" value="-c -fmessage-length=0 -fno-rtti -fno-exceptions -fno-common -fomit-frame-pointer"/>
|
||||
<toolOption toolId="com.silabs.ide.si32.gcc.cdt.managedbuild.tool.gnu.cpp.compiler.base" optionId="gnu.cpp.compiler.option.optimization.level" value="gnu.cpp.compiler.optimization.level.size"/>
|
||||
<toolOption toolId="com.silabs.ide.si32.gcc.cdt.managedbuild.tool.gnu.cpp.compiler.base" optionId="gnu.cpp.compiler.option.other.other" value="-c -fmessage-length=0 "/>
|
||||
<toolOption toolId="com.silabs.ide.si32.gcc.cdt.managedbuild.tool.gnu.cpp.compiler.base" optionId="gnu.cpp.compiler.option.other.other" value="-c -fmessage-length=0 -fno-rtti -fno-exceptions -fno-common -fomit-frame-pointer"/>
|
||||
<toolOption toolId="com.silabs.ide.si32.gcc.cdt.managedbuild.tool.gnu.cpp.compiler.base" optionId="com.silabs.ide.si32.gcc.cdt.managedbuild.tool.gnu.cpp.compiler.misc.dialect" value="com.silabs.ide.si32.gcc.cdt.managedbuild.tool.gnu.cpp.compiler.misc.dialect.default"/>
|
||||
</configuration>
|
||||
</project>
|
||||
|
|
|
|||
Loading…
Reference in New Issue