Commit 8128941e authored by Damien's avatar Damien
Browse files

Add support for RTC, used as a calendar.

parent 58a1b4c6
......@@ -64,6 +64,8 @@ SRC_STM = \
stm32f4xx_gpio.c \
stm32f4xx_tim.c \
stm32f4xx_sdio.c \
stm32f4xx_pwr.c \
stm32f4xx_rtc.c \
stm_misc.c \
usb_core.c \
usb_dcd.c \
......
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/**
******************************************************************************
* @file stm32f4xx_pwr.h
* @author MCD Application Team
* @version V1.1.0
* @date 11-January-2013
* @brief This file contains all the functions prototypes for the PWR firmware
* library.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT 2013 STMicroelectronics</center></h2>
*
* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.st.com/software_license_agreement_liberty_v2
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************
*/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32F4xx_PWR_H
#define __STM32F4xx_PWR_H
#ifdef __cplusplus
extern "C" {
#endif
/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx.h"
/** @addtogroup STM32F4xx_StdPeriph_Driver
* @{
*/
/** @addtogroup PWR
* @{
*/
/* Exported types ------------------------------------------------------------*/
/* Exported constants --------------------------------------------------------*/
/** @defgroup PWR_Exported_Constants
* @{
*/
/** @defgroup PWR_PVD_detection_level
* @{
*/
#define PWR_PVDLevel_0 PWR_CR_PLS_LEV0
#define PWR_PVDLevel_1 PWR_CR_PLS_LEV1
#define PWR_PVDLevel_2 PWR_CR_PLS_LEV2
#define PWR_PVDLevel_3 PWR_CR_PLS_LEV3
#define PWR_PVDLevel_4 PWR_CR_PLS_LEV4
#define PWR_PVDLevel_5 PWR_CR_PLS_LEV5
#define PWR_PVDLevel_6 PWR_CR_PLS_LEV6
#define PWR_PVDLevel_7 PWR_CR_PLS_LEV7
#define IS_PWR_PVD_LEVEL(LEVEL) (((LEVEL) == PWR_PVDLevel_0) || ((LEVEL) == PWR_PVDLevel_1)|| \
((LEVEL) == PWR_PVDLevel_2) || ((LEVEL) == PWR_PVDLevel_3)|| \
((LEVEL) == PWR_PVDLevel_4) || ((LEVEL) == PWR_PVDLevel_5)|| \
((LEVEL) == PWR_PVDLevel_6) || ((LEVEL) == PWR_PVDLevel_7))
/**
* @}
*/
/** @defgroup PWR_Regulator_state_in_STOP_mode
* @{
*/
#define PWR_Regulator_ON ((uint32_t)0x00000000)
#define PWR_Regulator_LowPower PWR_CR_LPDS
#define IS_PWR_REGULATOR(REGULATOR) (((REGULATOR) == PWR_Regulator_ON) || \
((REGULATOR) == PWR_Regulator_LowPower))
/**
* @}
*/
/** @defgroup PWR_STOP_mode_entry
* @{
*/
#define PWR_STOPEntry_WFI ((uint8_t)0x01)
#define PWR_STOPEntry_WFE ((uint8_t)0x02)
#define IS_PWR_STOP_ENTRY(ENTRY) (((ENTRY) == PWR_STOPEntry_WFI) || ((ENTRY) == PWR_STOPEntry_WFE))
/** @defgroup PWR_Regulator_Voltage_Scale
* @{
*/
#define PWR_Regulator_Voltage_Scale1 ((uint32_t)0x0000C000)
#define PWR_Regulator_Voltage_Scale2 ((uint32_t)0x00008000)
#define PWR_Regulator_Voltage_Scale3 ((uint32_t)0x00004000)
#define IS_PWR_REGULATOR_VOLTAGE(VOLTAGE) (((VOLTAGE) == PWR_Regulator_Voltage_Scale1) || \
((VOLTAGE) == PWR_Regulator_Voltage_Scale2) || \
((VOLTAGE) == PWR_Regulator_Voltage_Scale3))
/**
* @}
*/
/** @defgroup PWR_Flag
* @{
*/
#define PWR_FLAG_WU PWR_CSR_WUF
#define PWR_FLAG_SB PWR_CSR_SBF
#define PWR_FLAG_PVDO PWR_CSR_PVDO
#define PWR_FLAG_BRR PWR_CSR_BRR
#define PWR_FLAG_VOSRDY PWR_CSR_VOSRDY
/** @defgroup PWR_Flag_Legacy
* @{
*/
#define PWR_FLAG_REGRDY PWR_FLAG_VOSRDY
/**
* @}
*/
#define IS_PWR_GET_FLAG(FLAG) (((FLAG) == PWR_FLAG_WU) || ((FLAG) == PWR_FLAG_SB) || \
((FLAG) == PWR_FLAG_PVDO) || ((FLAG) == PWR_FLAG_BRR) || \
((FLAG) == PWR_FLAG_VOSRDY))
#define IS_PWR_CLEAR_FLAG(FLAG) (((FLAG) == PWR_FLAG_WU) || ((FLAG) == PWR_FLAG_SB))
/**
* @}
*/
/**
* @}
*/
/* Exported macro ------------------------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/* Function used to set the PWR configuration to the default reset state ******/
void PWR_DeInit(void);
/* Backup Domain Access function **********************************************/
void PWR_BackupAccessCmd(FunctionalState NewState);
/* PVD configuration functions ************************************************/
void PWR_PVDLevelConfig(uint32_t PWR_PVDLevel);
void PWR_PVDCmd(FunctionalState NewState);
/* WakeUp pins configuration functions ****************************************/
void PWR_WakeUpPinCmd(FunctionalState NewState);
/* Main and Backup Regulators configuration functions *************************/
void PWR_BackupRegulatorCmd(FunctionalState NewState);
void PWR_MainRegulatorModeConfig(uint32_t PWR_Regulator_Voltage);
/* FLASH Power Down configuration functions ***********************************/
void PWR_FlashPowerDownCmd(FunctionalState NewState);
/* Low Power modes configuration functions ************************************/
void PWR_EnterSTOPMode(uint32_t PWR_Regulator, uint8_t PWR_STOPEntry);
void PWR_EnterSTANDBYMode(void);
/* Flags management functions *************************************************/
FlagStatus PWR_GetFlagStatus(uint32_t PWR_FLAG);
void PWR_ClearFlag(uint32_t PWR_FLAG);
#ifdef __cplusplus
}
#endif
#endif /* __STM32F4xx_PWR_H */
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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......@@ -3,6 +3,7 @@
#include <stm32f4xx_rcc.h>
#include <stm32f4xx_gpio.h>
#include <stm32f4xx_tim.h>
#include <stm32f4xx_rtc.h>
#include <stm_misc.h>
#include "std.h"
......@@ -462,6 +463,66 @@ py_obj_t pyb_hid_send_report(py_obj_t arg) {
return py_const_none;
}
static void rtc_init(void) {
/* 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) {
}
/* Select the RTC Clock Source */
RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);
/* 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);
}
py_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 py_const_none;
}
int main(void) {
// TODO disable JTAG
......@@ -489,6 +550,7 @@ int main(void) {
// basic sub-system init
sys_tick_init();
led_init();
rtc_init();
// turn on LED to indicate bootup
led_state(PYB_LED_G1, 1);
......@@ -526,6 +588,7 @@ soft_reset:
rt_store_attr(m, qstr_from_str_static("servo"), rt_make_function_1(pyb_servo_set));
rt_store_attr(m, qstr_from_str_static("mma"), rt_make_function_0(pyb_mma_read));
rt_store_attr(m, qstr_from_str_static("hid"), rt_make_function_1(pyb_hid_send_report));
rt_store_attr(m, qstr_from_str_static("time"), rt_make_function_0(pyb_rtc_read));
rt_store_name(qstr_from_str_static("pyb"), m);
}
......
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