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-rw-r--r--stm/Makefile1
-rw-r--r--stm/main.c82
-rw-r--r--stm/rtc.c93
-rw-r--r--stm/rtc.h2
4 files changed, 97 insertions, 81 deletions
diff --git a/stm/Makefile b/stm/Makefile
index 6455048714..f7e5eb6129 100644
--- a/stm/Makefile
+++ b/stm/Makefile
@@ -64,6 +64,7 @@ SRC_C = \
i2c.c \
usrsw.c \
adc.c \
+ rtc.c \
# pybwlan.c \
SRC_S = \
diff --git a/stm/main.c b/stm/main.c
index 2865b3a986..a42367984e 100644
--- a/stm/main.c
+++ b/stm/main.c
@@ -42,6 +42,7 @@
#include "i2c.h"
#include "usrsw.h"
#include "adc.h"
+#include "rtc.h"
int errno;
@@ -543,87 +544,6 @@ mp_obj_t pyb_hid_send_report(mp_obj_t arg) {
return mp_const_none;
}
-static void rtc_init(void) {
- uint32_t rtc_clksrc;
- uint32_t timeout = 1000000;
-
- /* Enable the PWR clock */
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
-
- /* Allow access to RTC */
- PWR_BackupAccessCmd(ENABLE);
-
- /* Enable the LSE OSC */
- RCC_LSEConfig(RCC_LSE_ON);
-
- /* Wait till LSE is ready */
- while((RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET) && (--timeout > 0)) {
- }
-
- /* If LSE timed out, use LSI instead */
- if (timeout == 0) {
- /* Enable the LSI OSC */
- RCC_LSICmd(ENABLE);
-
- /* Wait till LSI is ready */
- while(RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET) {
- }
-
- /* Use LSI as the RTC Clock Source */
- rtc_clksrc = RCC_RTCCLKSource_LSI;
- } else {
- /* Use LSE as the RTC Clock Source */
- rtc_clksrc = RCC_RTCCLKSource_LSE;
- }
-
- /* Select the RTC Clock Source */
- RCC_RTCCLKConfig(rtc_clksrc);
-
- /* Note: LSI is around (32KHz), these dividers should work either way */
- /* ck_spre(1Hz) = RTCCLK(LSE) /(uwAsynchPrediv + 1)*(uwSynchPrediv + 1)*/
- uint32_t uwSynchPrediv = 0xFF;
- uint32_t uwAsynchPrediv = 0x7F;
-
- /* Enable the RTC Clock */
- RCC_RTCCLKCmd(ENABLE);
-
- /* Wait for RTC APB registers synchronisation */
- RTC_WaitForSynchro();
-
- /* Configure the RTC data register and RTC prescaler */
- RTC_InitTypeDef RTC_InitStructure;
- RTC_InitStructure.RTC_AsynchPrediv = uwAsynchPrediv;
- RTC_InitStructure.RTC_SynchPrediv = uwSynchPrediv;
- RTC_InitStructure.RTC_HourFormat = RTC_HourFormat_24;
- RTC_Init(&RTC_InitStructure);
-
- // Set the date (BCD)
- RTC_DateTypeDef RTC_DateStructure;
- RTC_DateStructure.RTC_Year = 0x13;
- RTC_DateStructure.RTC_Month = RTC_Month_October;
- RTC_DateStructure.RTC_Date = 0x26;
- RTC_DateStructure.RTC_WeekDay = RTC_Weekday_Saturday;
- RTC_SetDate(RTC_Format_BCD, &RTC_DateStructure);
-
- // Set the time (BCD)
- RTC_TimeTypeDef RTC_TimeStructure;
- RTC_TimeStructure.RTC_H12 = RTC_H12_AM;
- RTC_TimeStructure.RTC_Hours = 0x01;
- RTC_TimeStructure.RTC_Minutes = 0x53;
- RTC_TimeStructure.RTC_Seconds = 0x00;
- RTC_SetTime(RTC_Format_BCD, &RTC_TimeStructure);
-
- // Indicator for the RTC configuration
- //RTC_WriteBackupRegister(RTC_BKP_DR0, 0x32F2);
-}
-
-mp_obj_t pyb_rtc_read(void) {
- RTC_TimeTypeDef RTC_TimeStructure;
- RTC_GetTime(RTC_Format_BIN, &RTC_TimeStructure);
- printf("%02d:%02d:%02d\n", RTC_TimeStructure.RTC_Hours, RTC_TimeStructure.RTC_Minutes, RTC_TimeStructure.RTC_Seconds);
- return mp_const_none;
-}
-
typedef struct _pyb_file_obj_t {
mp_obj_base_t base;
FIL fp;
diff --git a/stm/rtc.c b/stm/rtc.c
new file mode 100644
index 0000000000..9adfd3a7ad
--- /dev/null
+++ b/stm/rtc.c
@@ -0,0 +1,93 @@
+#include <stdio.h>
+#include <stm32f4xx.h>
+
+#include "misc.h"
+#include "mpconfig.h"
+#include "mpconfigport.h"
+#include "qstr.h"
+#include "obj.h"
+#include "rtc.h"
+
+void rtc_init(void) {
+ uint32_t rtc_clksrc;
+ uint32_t timeout = 1000000;
+
+ /* Enable the PWR clock */
+ RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
+
+ /* Allow access to RTC */
+ PWR_BackupAccessCmd(ENABLE);
+
+ /* Enable the LSE OSC */
+ RCC_LSEConfig(RCC_LSE_ON);
+
+ /* Wait till LSE is ready */
+ while((RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET) && (--timeout > 0)) {
+ }
+
+ /* If LSE timed out, use LSI instead */
+ if (timeout == 0) {
+ /* Enable the LSI OSC */
+ RCC_LSICmd(ENABLE);
+
+ /* Wait till LSI is ready */
+ while(RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET) {
+ }
+
+ /* Use LSI as the RTC Clock Source */
+ rtc_clksrc = RCC_RTCCLKSource_LSI;
+ } else {
+ /* Use LSE as the RTC Clock Source */
+ rtc_clksrc = RCC_RTCCLKSource_LSE;
+ }
+
+ /* Select the RTC Clock Source */
+ RCC_RTCCLKConfig(rtc_clksrc);
+
+ /* Note: LSI is around (32KHz), these dividers should work either way */
+ /* ck_spre(1Hz) = RTCCLK(LSE) /(uwAsynchPrediv + 1)*(uwSynchPrediv + 1)*/
+ uint32_t uwSynchPrediv = 0xFF;
+ uint32_t uwAsynchPrediv = 0x7F;
+
+ /* Enable the RTC Clock */
+ RCC_RTCCLKCmd(ENABLE);
+
+ /* Wait for RTC APB registers synchronisation */
+ RTC_WaitForSynchro();
+
+ /* Configure the RTC data register and RTC prescaler */
+ RTC_InitTypeDef RTC_InitStructure;
+ RTC_InitStructure.RTC_AsynchPrediv = uwAsynchPrediv;
+ RTC_InitStructure.RTC_SynchPrediv = uwSynchPrediv;
+ RTC_InitStructure.RTC_HourFormat = RTC_HourFormat_24;
+ RTC_Init(&RTC_InitStructure);
+
+ // Set the date (BCD)
+ RTC_DateTypeDef RTC_DateStructure;
+ RTC_DateStructure.RTC_Year = 0x13;
+ RTC_DateStructure.RTC_Month = RTC_Month_October;
+ RTC_DateStructure.RTC_Date = 0x26;
+ RTC_DateStructure.RTC_WeekDay = RTC_Weekday_Saturday;
+ RTC_SetDate(RTC_Format_BCD, &RTC_DateStructure);
+
+ // Set the time (BCD)
+ RTC_TimeTypeDef RTC_TimeStructure;
+ RTC_TimeStructure.RTC_H12 = RTC_H12_AM;
+ RTC_TimeStructure.RTC_Hours = 0x01;
+ RTC_TimeStructure.RTC_Minutes = 0x53;
+ RTC_TimeStructure.RTC_Seconds = 0x00;
+ RTC_SetTime(RTC_Format_BCD, &RTC_TimeStructure);
+
+ // Indicator for the RTC configuration
+ //RTC_WriteBackupRegister(RTC_BKP_DR0, 0x32F2);
+}
+
+/******************************************************************************/
+/* Micro Python bindings */
+
+mp_obj_t pyb_rtc_read(void) {
+ RTC_TimeTypeDef RTC_TimeStructure;
+ RTC_GetTime(RTC_Format_BIN, &RTC_TimeStructure);
+ printf("%02d:%02d:%02d\n", RTC_TimeStructure.RTC_Hours, RTC_TimeStructure.RTC_Minutes, RTC_TimeStructure.RTC_Seconds);
+ return mp_const_none;
+}
diff --git a/stm/rtc.h b/stm/rtc.h
new file mode 100644
index 0000000000..6b1ff1b454
--- /dev/null
+++ b/stm/rtc.h
@@ -0,0 +1,2 @@
+void rtc_init(void);
+mp_obj_t pyb_rtc_read(void);
generated by cgit v1.2.3 (git 2.39.1) at 2025-05-25 11:24:13 +0000