mirror of https://github.com/ARMmbed/mbed-os.git
[XXX_F3XX] enhance rtc api
add define to select LSI or LSE, update rtc api accordinglypull/1640/head
dbestm
parent
e42e174852
commit
f6cafe37c8
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@ -164,7 +164,7 @@ typedef struct
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* @{
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*/
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/* LSE state change timeout */
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#define LSE_TIMEOUT_VALUE ((uint32_t)100) /* 5 s */
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#define LSE_TIMEOUT_VALUE ((uint32_t)5000) /* 5 s */
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/* Disable Backup domain write protection state change timeout */
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#define DBP_TIMEOUT_VALUE ((uint32_t)100) /* 100 ms */
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@ -48,6 +48,7 @@
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#define DEVICE_SPISLAVE 1
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#define DEVICE_RTC 1
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#define DEVICE_RTC_LSI 1
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#define DEVICE_PWMOUT 1
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@ -48,6 +48,7 @@
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#define DEVICE_SPISLAVE 1
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#define DEVICE_RTC 1
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#define DEVICE_RTC_LSI 1
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#define DEVICE_PWMOUT 1
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@ -48,6 +48,7 @@
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#define DEVICE_SPISLAVE 1
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#define DEVICE_RTC 1
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#define DEVICE_RTC_LSI 0
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#define DEVICE_PWMOUT 1
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@ -48,6 +48,7 @@
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#define DEVICE_SPISLAVE 1
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#define DEVICE_RTC 1
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#define DEVICE_RTC_LSI 0
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#define DEVICE_PWMOUT 1
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@ -48,6 +48,7 @@
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#define DEVICE_SPISLAVE 1
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#define DEVICE_RTC 1
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#define DEVICE_RTC_LSI 0
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#define DEVICE_PWMOUT 1
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@ -48,6 +48,7 @@
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#define DEVICE_SPISLAVE 1
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#define DEVICE_RTC 1
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#define DEVICE_RTC_LSI 0
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#define DEVICE_PWMOUT 1
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@ -33,7 +33,9 @@
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#include "mbed_error.h"
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#if DEVICE_RTC_LSI
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static int rtc_inited = 0;
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#endif
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static RTC_HandleTypeDef RtcHandle;
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@ -42,21 +44,13 @@ void rtc_init(void)
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RCC_OscInitTypeDef RCC_OscInitStruct;
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uint32_t rtc_freq = 0;
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if (rtc_inited) return;
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#if DEVICE_RTC_LSI
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rtc_inited = 1;
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#endif
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RtcHandle.Instance = RTC;
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// Enable Power clock
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__PWR_CLK_ENABLE();
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// Enable access to Backup domain
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HAL_PWR_EnableBkUpAccess();
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// Reset Backup domain
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__HAL_RCC_BACKUPRESET_FORCE();
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__HAL_RCC_BACKUPRESET_RELEASE();
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#if !DEVICE_RTC_LSI
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// Enable LSE Oscillator
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; /* Mandatory, otherwise the PLL is reconfigured! */
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@ -65,23 +59,35 @@ void rtc_init(void)
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// Connect LSE to RTC
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__HAL_RCC_RTC_CONFIG(RCC_RTCCLKSOURCE_LSE);
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rtc_freq = LSE_VALUE;
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} else {
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// Enable LSI clock
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_LSE;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; // Mandatory, otherwise the PLL is reconfigured!
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RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
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RCC_OscInitStruct.LSIState = RCC_LSI_ON;
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if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
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error("RTC error: LSI clock initialization failed.");
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}
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// Connect LSI to RTC
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__HAL_RCC_RTC_CONFIG(RCC_RTCCLKSOURCE_LSI);
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// Note: The LSI clock can be measured precisely using a timer input capture.
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rtc_freq = LSI_VALUE;
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}
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else {
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error("RTC error: LSE clock initialization failed.");
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}
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#else
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// Enable Power clock
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__PWR_CLK_ENABLE();
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// Enable access to Backup domain
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HAL_PWR_EnableBkUpAccess();
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// Reset Backup domain
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__HAL_RCC_BACKUPRESET_FORCE();
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__HAL_RCC_BACKUPRESET_RELEASE();
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// Enable LSI clock
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_LSE;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE; // Mandatory, otherwise the PLL is reconfigured!
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RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
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RCC_OscInitStruct.LSIState = RCC_LSI_ON;
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if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
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error("RTC error: LSI clock initialization failed.");
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}
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// Connect LSI to RTC
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__HAL_RCC_RTC_CONFIG(RCC_RTCCLKSOURCE_LSI);
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// Note: The LSI clock can be measured precisely using a timer input capture.
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rtc_freq = LSI_VALUE;
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#endif
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// Check if RTC is already initialized
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if ((RTC->ISR & RTC_ISR_INITS) == RTC_ISR_INITS) return;
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// Enable RTC
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__HAL_RCC_RTC_ENABLE();
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@ -100,6 +106,7 @@ void rtc_init(void)
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void rtc_free(void)
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{
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#if DEVICE_RTC_LSI
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// Enable Power clock
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__PWR_CLK_ENABLE();
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@ -112,6 +119,7 @@ void rtc_free(void)
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// Disable access to Backup domain
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HAL_PWR_DisableBkUpAccess();
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#endif
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// Disable LSI and LSE clocks
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RCC_OscInitTypeDef RCC_OscInitStruct;
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@ -121,12 +129,19 @@ void rtc_free(void)
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RCC_OscInitStruct.LSEState = RCC_LSE_OFF;
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HAL_RCC_OscConfig(&RCC_OscInitStruct);
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#if DEVICE_RTC_LSI
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rtc_inited = 0;
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#endif
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}
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int rtc_isenabled(void)
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{
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#if DEVICE_RTC_LSI
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return rtc_inited;
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#else
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if ((RTC->ISR & RTC_ISR_INITS) == RTC_ISR_INITS) return 1;
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else return 0;
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#endif
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}
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/*
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