Diff: wakeup.c

Revision:

6:e27eaad36a0c

Parent:

5:59f60bedc6df

Child:

7:3c97f3048373

--- a/wakeup.c	Tue Aug 18 16:31:53 2015 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,153 +0,0 @@
-#include "stm32f4xx_hal.h"
-#include "wakeup.h"
-
-
-static int rtc_inited = 0;
-static uint32_t timeout = 10;
-
-uint32_t wakeup_init(uint32_t seconds) {
-    RCC_OscInitTypeDef RCC_OscInitStruct;
-    uint32_t rtc_freq = 0;
-
-    if (rtc_inited) {
-        if (timeout != seconds)   {
-            timeout = seconds;
-            HAL_RTCEx_SetWakeUpTimer_IT(&RtcHandle, timeout, RTC_WAKEUPCLOCK_CK_SPRE_16BITS);
-        }
-        return 0;
-    }
-    rtc_inited = 1;
-
-    RtcHandle.Instance = RTC;
-
-    // Enable Power clock
-    __PWR_CLK_ENABLE();
-
-    // Enable access to Backup domain
-    HAL_PWR_EnableBkUpAccess();
-
-    uint32_t count = RTC_ReadBackupRegister(RTC_BKP_DR0);
-    printf("UPLINK: %lu\r\n", count);
-
-
-    // Reset Backup domain
-    __HAL_RCC_BACKUPRESET_FORCE();
-    __HAL_RCC_BACKUPRESET_RELEASE();
-
-    // Enable LSE Oscillator
-    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE;
-    RCC_OscInitStruct.PLL.PLLState   = RCC_PLL_NONE; /* Mandatory, otherwise the PLL is reconfigured! */
-    RCC_OscInitStruct.LSEState       = RCC_LSE_ON; /* External 32.768 kHz clock on OSC_IN/OSC_OUT */
-    if (HAL_RCC_OscConfig(&RCC_OscInitStruct) == HAL_OK) {
-        // Connect LSE to RTC
-        __HAL_RCC_RTC_CLKPRESCALER(RCC_RTCCLKSOURCE_LSE);
-        __HAL_RCC_RTC_CONFIG(RCC_RTCCLKSOURCE_LSE);
-        rtc_freq = LSE_VALUE;
-    } else {
-        // Enable LSI clock
-        RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_LSE;
-        RCC_OscInitStruct.PLL.PLLState   = RCC_PLL_NONE; // Mandatory, otherwise the PLL is reconfigured!
-        RCC_OscInitStruct.LSEState       = RCC_LSE_OFF;
-        RCC_OscInitStruct.LSIState       = RCC_LSI_ON;
-        if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
-            //error("RTC error: LSI clock initialization failed.");
-        }
-        // Connect LSI to RTC
-        __HAL_RCC_RTC_CLKPRESCALER(RCC_RTCCLKSOURCE_LSI);
-        __HAL_RCC_RTC_CONFIG(RCC_RTCCLKSOURCE_LSI);
-        // [TODO] This value is LSI typical value. To be measured precisely using a timer input capture
-        rtc_freq = 32000;
-    }
-
-    // Enable RTC
-    __HAL_RCC_RTC_ENABLE();
-
-    RtcHandle.Init.HourFormat     = RTC_HOURFORMAT_24;
-    RtcHandle.Init.AsynchPrediv   = 127;
-    RtcHandle.Init.SynchPrediv    = (rtc_freq / 128) - 1;
-    RtcHandle.Init.OutPut         = RTC_OUTPUT_DISABLE;
-    RtcHandle.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
-    RtcHandle.Init.OutPutType     = RTC_OUTPUT_TYPE_OPENDRAIN;
-
-    if (HAL_RTC_Init(&RtcHandle) != HAL_OK) {
-        //error("RTC error: RTC initialization failed.");
-    }
-
-    timeout = seconds;
-    HAL_RTCEx_SetWakeUpTimer_IT(&RtcHandle, timeout, RTC_WAKEUPCLOCK_CK_SPRE_16BITS);
-
-    return count;
-}
-
-void wakeup_clear(void)
-{
-    __HAL_RTC_WAKEUPTIMER_CLEAR_FLAG(&RtcHandle, RTC_FLAG_WUTF);
-}
-
-uint32_t RTC_ReadBackupRegister(uint32_t RTC_BKP_DR)
-{
-    __IO uint32_t tmp = 0;
-
-    // Check the parameters
-    assert_param(IS_RTC_BKP(RTC_BKP_DR));
-    tmp = RTC_BASE + 0x50;
-    tmp += (RTC_BKP_DR * 4);
-    // Read the specified register
-    return (*(__IO uint32_t *)tmp);
-}
-
-void RTC_WriteBackupRegister(uint32_t RTC_BKP_DR, uint32_t Data)
-{
-    __IO uint32_t tmp = 0;
-
-    // Check the parameters/
-    assert_param(IS_RTC_BKP(RTC_BKP_DR));
-    tmp = RTC_BASE + 0x50;
-    tmp += (RTC_BKP_DR * 4);
-    // Write the specified register/
-    *(__IO uint32_t *)tmp = (uint32_t)Data;
-}
-
-
-uint8_t TM_WATCHDOG_Init(uint16_t reload) {
-    uint8_t result = 0;
-
-    /* Check if the system has resumed from IWDG reset */
-    if (RCC->CSR & (0x20000000)) {
-        /* Reset by IWDG */
-        result = 1;
-
-        /* Clear reset flags */
-        RCC->CSR |= RCC_CSR_RMVF;
-    }
-
-    /* Enable write access to IWDG_PR and IWDG_RLR registers */
-    IWDG->KR = 0x5555;
-
-    /* IWDG counter clock: LSI/32 = 1024Hz */
-    IWDG->PR = 0x03;
-
-    reload = 4095;
-
-    printf("WATCHDOG RELOAD: %lu\r\n", reload);
-    /* Set reload */
-    IWDG->RLR = reload;
-
-    /* Reload IWDG counter */
-    IWDG->KR = 0xAAAA;
-
-    /* Enable IWDG (the LSI oscillator will be enabled by hardware) */
-    IWDG->KR = 0xCCCC;
-
-    /* Return status */
-    return result;
-}
-
-void TM_WATCHDOG_Disable(void) {
-    IWDG->KR = 0x0000;
-}
-
-void TM_WATCHDOG_Reset(void) {
-    /* Reload IWDG counter */
-    IWDG->KR = 0xAAAA;
-}