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DomStudent
2024-05-22 23:37:24 +03:00
parent 1e6b16bdfa
commit 9f4cd6f04a
103 changed files with 112710 additions and 2 deletions
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26
Core/Inc/Encoder.h Normal file
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#ifndef ENCODER_H
#define ENCODER_H
#include "stm32g0xx_hal.h"
typedef struct DS_Encoder
{
GPIO_TypeDef *PortEncSignal1, *PortEncSignal2;
uint16_t PinEncSignal1, PinEncSignal2;
int8_t State;
int8_t Direction;
uint32_t PrevTick;
uint8_t ValueSignal1, ValueSignal2;
}DS_Encoder;
void DS_EncoderInit(DS_Encoder *Encoder, GPIO_TypeDef *PortSignal1, uint16_t PinSignal1, GPIO_TypeDef *PortSignal2, uint16_t PinSignal2);
void DS_EncoderUpdate(DS_Encoder *Encoder);
int8_t DS_EncoderGetState(DS_Encoder *Encoder);
#endif

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Core/Inc/main.h Normal file
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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.h
* @brief : Header for main.c file.
* This file contains the common defines of the application.
******************************************************************************
* @attention
*
* Copyright (c) 2024 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __MAIN_H
#define __MAIN_H
#ifdef __cplusplus
extern "C" {
#endif
/* Includes ------------------------------------------------------------------*/
#include "stm32g0xx_hal.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Exported types ------------------------------------------------------------*/
/* USER CODE BEGIN ET */
/* USER CODE END ET */
/* Exported constants --------------------------------------------------------*/
/* USER CODE BEGIN EC */
/* USER CODE END EC */
/* Exported macro ------------------------------------------------------------*/
/* USER CODE BEGIN EM */
/* USER CODE END EM */
/* Exported functions prototypes ---------------------------------------------*/
void Error_Handler(void);
/* USER CODE BEGIN EFP */
/* USER CODE END EFP */
/* Private defines -----------------------------------------------------------*/
#define CS_Pin GPIO_PIN_3
#define CS_GPIO_Port GPIOA
#define ENC_Button_Pin GPIO_PIN_5
#define ENC_Button_GPIO_Port GPIOA
#define Enc_Line1_Pin GPIO_PIN_6
#define Enc_Line1_GPIO_Port GPIOA
#define Enc_Line2_Pin GPIO_PIN_7
#define Enc_Line2_GPIO_Port GPIOA
/* USER CODE BEGIN Private defines */
/* USER CODE END Private defines */
#ifdef __cplusplus
}
#endif
#endif /* __MAIN_H */

351
Core/Inc/stm32g0xx_hal_conf.h Normal file
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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file stm32g0xx_hal_conf.h
* @author MCD Application Team
* @brief HAL configuration file.
******************************************************************************
* @attention
*
* Copyright (c) 2018 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef STM32G0xx_HAL_CONF_H
#define STM32G0xx_HAL_CONF_H
#ifdef __cplusplus
extern "C" {
#endif
/* Exported types ------------------------------------------------------------*/
/* Exported constants --------------------------------------------------------*/
/* ########################## Module Selection ############################## */
/**
* @brief This is the list of modules to be used in the HAL driver
*/
#define HAL_MODULE_ENABLED
/* #define HAL_ADC_MODULE_ENABLED */
/* #define HAL_CEC_MODULE_ENABLED */
/* #define HAL_COMP_MODULE_ENABLED */
/* #define HAL_CRC_MODULE_ENABLED */
/* #define HAL_CRYP_MODULE_ENABLED */
/* #define HAL_DAC_MODULE_ENABLED */
/* #define HAL_EXTI_MODULE_ENABLED */
/* #define HAL_FDCAN_MODULE_ENABLED */
/* #define HAL_HCD_MODULE_ENABLED */
/* #define HAL_I2C_MODULE_ENABLED */
/* #define HAL_I2S_MODULE_ENABLED */
/* #define HAL_IWDG_MODULE_ENABLED */
/* #define HAL_IRDA_MODULE_ENABLED */
/* #define HAL_LPTIM_MODULE_ENABLED */
/* #define HAL_PCD_MODULE_ENABLED */
/* #define HAL_RNG_MODULE_ENABLED */
/* #define HAL_RTC_MODULE_ENABLED */
/* #define HAL_SMARTCARD_MODULE_ENABLED */
/* #define HAL_SMBUS_MODULE_ENABLED */
#define HAL_SPI_MODULE_ENABLED
/* #define HAL_TIM_MODULE_ENABLED */
/* #define HAL_UART_MODULE_ENABLED */
/* #define HAL_USART_MODULE_ENABLED */
/* #define HAL_WWDG_MODULE_ENABLED */
#define HAL_GPIO_MODULE_ENABLED
#define HAL_EXTI_MODULE_ENABLED
#define HAL_DMA_MODULE_ENABLED
#define HAL_RCC_MODULE_ENABLED
#define HAL_FLASH_MODULE_ENABLED
#define HAL_PWR_MODULE_ENABLED
#define HAL_CORTEX_MODULE_ENABLED
/* ########################## Register Callbacks selection ############################## */
/**
* @brief This is the list of modules where register callback can be used
*/
#define USE_HAL_ADC_REGISTER_CALLBACKS 0u
#define USE_HAL_CEC_REGISTER_CALLBACKS 0u
#define USE_HAL_COMP_REGISTER_CALLBACKS 0u
#define USE_HAL_CRYP_REGISTER_CALLBACKS 0u
#define USE_HAL_DAC_REGISTER_CALLBACKS 0u
#define USE_HAL_FDCAN_REGISTER_CALLBACKS 0u
#define USE_HAL_HCD_REGISTER_CALLBACKS 0u
#define USE_HAL_I2C_REGISTER_CALLBACKS 0u
#define USE_HAL_I2S_REGISTER_CALLBACKS 0u
#define USE_HAL_IRDA_REGISTER_CALLBACKS 0u
#define USE_HAL_LPTIM_REGISTER_CALLBACKS 0u
#define USE_HAL_PCD_REGISTER_CALLBACKS 0u
#define USE_HAL_RNG_REGISTER_CALLBACKS 0u
#define USE_HAL_RTC_REGISTER_CALLBACKS 0u
#define USE_HAL_SMBUS_REGISTER_CALLBACKS 0u
#define USE_HAL_SPI_REGISTER_CALLBACKS 0u
#define USE_HAL_TIM_REGISTER_CALLBACKS 0u
#define USE_HAL_UART_REGISTER_CALLBACKS 0u
#define USE_HAL_USART_REGISTER_CALLBACKS 0u
#define USE_HAL_WWDG_REGISTER_CALLBACKS 0u
/* ########################## Oscillator Values adaptation ####################*/
/**
* @brief Adjust the value of External High Speed oscillator (HSE) used in your application.
* This value is used by the RCC HAL module to compute the system frequency
* (when HSE is used as system clock source, directly or through the PLL).
*/
#if !defined (HSE_VALUE)
#define HSE_VALUE (8000000UL) /*!< Value of the External oscillator in Hz */
#endif /* HSE_VALUE */
#if !defined (HSE_STARTUP_TIMEOUT)
#define HSE_STARTUP_TIMEOUT (100UL) /*!< Time out for HSE start up, in ms */
#endif /* HSE_STARTUP_TIMEOUT */
/**
* @brief Internal High Speed oscillator (HSI) value.
* This value is used by the RCC HAL module to compute the system frequency
* (when HSI is used as system clock source, directly or through the PLL).
*/
#if !defined (HSI_VALUE)
#define HSI_VALUE (16000000UL) /*!< Value of the Internal oscillator in Hz*/
#endif /* HSI_VALUE */
#if defined(STM32G0C1xx) || defined(STM32G0B1xx) || defined(STM32G0B0xx)
/**
* @brief Internal High Speed oscillator (HSI48) value for USB FS, SDMMC and RNG.
* This internal oscillator is mainly dedicated to provide a high precision clock to
* the USB peripheral by means of a special Clock Recovery System (CRS) circuitry.
* When the CRS is not used, the HSI48 RC oscillator runs on it default frequency
* which is subject to manufacturing process variations.
*/
#if !defined (HSI48_VALUE)
#define HSI48_VALUE 48000000U /*!< Value of the Internal High Speed oscillator for USB FS/SDMMC/RNG in Hz.
The real value my vary depending on manufacturing process variations.*/
#endif /* HSI48_VALUE */
#endif
/**
* @brief Internal Low Speed oscillator (LSI) value.
*/
#if !defined (LSI_VALUE)
#define LSI_VALUE (32000UL) /*!< LSI Typical Value in Hz*/
#endif /* LSI_VALUE */ /*!< Value of the Internal Low Speed oscillator in Hz
The real value may vary depending on the variations
in voltage and temperature.*/
/**
* @brief External Low Speed oscillator (LSE) value.
* This value is used by the UART, RTC HAL module to compute the system frequency
*/
#if !defined (LSE_VALUE)
#define LSE_VALUE (32768UL) /*!< Value of the External oscillator in Hz*/
#endif /* LSE_VALUE */
#if !defined (LSE_STARTUP_TIMEOUT)
#define LSE_STARTUP_TIMEOUT (5000UL) /*!< Time out for LSE start up, in ms */
#endif /* LSE_STARTUP_TIMEOUT */
/**
* @brief External clock source for I2S1 peripheral
* This value is used by the RCC HAL module to compute the I2S1 clock source
* frequency.
*/
#if !defined (EXTERNAL_I2S1_CLOCK_VALUE)
#define EXTERNAL_I2S1_CLOCK_VALUE (12288000UL) /*!< Value of the I2S1 External clock source in Hz*/
#endif /* EXTERNAL_I2S1_CLOCK_VALUE */
#if defined(STM32G0C1xx) || defined(STM32G0B1xx) || defined(STM32G0B0xx)
/**
* @brief External clock source for I2S2 peripheral
* This value is used by the RCC HAL module to compute the I2S2 clock source
* frequency.
*/
#if !defined (EXTERNAL_I2S2_CLOCK_VALUE)
#define EXTERNAL_I2S2_CLOCK_VALUE 48000U /*!< Value of the I2S2 External clock source in Hz*/
#endif /* EXTERNAL_I2S2_CLOCK_VALUE */
#endif
/* Tip: To avoid modifying this file each time you need to use different HSE,
=== you can define the HSE value in your toolchain compiler preprocessor. */
/* ########################### System Configuration ######################### */
/**
* @brief This is the HAL system configuration section
*/
#define VDD_VALUE (3300UL) /*!< Value of VDD in mv */
#define TICK_INT_PRIORITY 3U /*!< tick interrupt priority */
#define USE_RTOS 0U
#define PREFETCH_ENABLE 1U
#define INSTRUCTION_CACHE_ENABLE 1U
/* ################## SPI peripheral configuration ########################## */
/* CRC FEATURE: Use to activate CRC feature inside HAL SPI Driver
* Activated: CRC code is present inside driver
* Deactivated: CRC code cleaned from driver
*/
#define USE_SPI_CRC 0U
/* ################## CRYP peripheral configuration ########################## */
#define USE_HAL_CRYP_SUSPEND_RESUME 1U
/* ########################## Assert Selection ############################## */
/**
* @brief Uncomment the line below to expanse the "assert_param" macro in the
* HAL drivers code
*/
/* #define USE_FULL_ASSERT 1U */
/* Includes ------------------------------------------------------------------*/
/**
* @brief Include modules header file
*/
#ifdef HAL_RCC_MODULE_ENABLED
#include "stm32g0xx_hal_rcc.h"
#endif /* HAL_RCC_MODULE_ENABLED */
#ifdef HAL_GPIO_MODULE_ENABLED
#include "stm32g0xx_hal_gpio.h"
#endif /* HAL_GPIO_MODULE_ENABLED */
#ifdef HAL_DMA_MODULE_ENABLED
#include "stm32g0xx_hal_dma.h"
#endif /* HAL_DMA_MODULE_ENABLED */
#ifdef HAL_CORTEX_MODULE_ENABLED
#include "stm32g0xx_hal_cortex.h"
#endif /* HAL_CORTEX_MODULE_ENABLED */
#ifdef HAL_ADC_MODULE_ENABLED
#include "stm32g0xx_hal_adc.h"
#include "stm32g0xx_hal_adc_ex.h"
#endif /* HAL_ADC_MODULE_ENABLED */
#ifdef HAL_CEC_MODULE_ENABLED
#include "stm32g0xx_hal_cec.h"
#endif /* HAL_CEC_MODULE_ENABLED */
#ifdef HAL_COMP_MODULE_ENABLED
#include "stm32g0xx_hal_comp.h"
#endif /* HAL_COMP_MODULE_ENABLED */
#ifdef HAL_CRC_MODULE_ENABLED
#include "stm32g0xx_hal_crc.h"
#endif /* HAL_CRC_MODULE_ENABLED */
#ifdef HAL_CRYP_MODULE_ENABLED
#include "stm32g0xx_hal_cryp.h"
#endif /* HAL_CRYP_MODULE_ENABLED */
#ifdef HAL_DAC_MODULE_ENABLED
#include "stm32g0xx_hal_dac.h"
#endif /* HAL_DAC_MODULE_ENABLED */
#ifdef HAL_EXTI_MODULE_ENABLED
#include "stm32g0xx_hal_exti.h"
#endif /* HAL_EXTI_MODULE_ENABLED */
#ifdef HAL_FLASH_MODULE_ENABLED
#include "stm32g0xx_hal_flash.h"
#endif /* HAL_FLASH_MODULE_ENABLED */
#ifdef HAL_FDCAN_MODULE_ENABLED
#include "stm32g0xx_hal_fdcan.h"
#endif /* HAL_FDCAN_MODULE_ENABLED */
#ifdef HAL_HCD_MODULE_ENABLED
#include "stm32g0xx_hal_hcd.h"
#endif /* HAL_HCD_MODULE_ENABLED */
#ifdef HAL_I2C_MODULE_ENABLED
#include "stm32g0xx_hal_i2c.h"
#endif /* HAL_I2C_MODULE_ENABLED */
#ifdef HAL_I2S_MODULE_ENABLED
#include "stm32g0xx_hal_i2s.h"
#endif /* HAL_I2S_MODULE_ENABLED */
#ifdef HAL_IRDA_MODULE_ENABLED
#include "stm32g0xx_hal_irda.h"
#endif /* HAL_IRDA_MODULE_ENABLED */
#ifdef HAL_IWDG_MODULE_ENABLED
#include "stm32g0xx_hal_iwdg.h"
#endif /* HAL_IWDG_MODULE_ENABLED */
#ifdef HAL_LPTIM_MODULE_ENABLED
#include "stm32g0xx_hal_lptim.h"
#endif /* HAL_LPTIM_MODULE_ENABLED */
#ifdef HAL_PCD_MODULE_ENABLED
#include "stm32g0xx_hal_pcd.h"
#endif /* HAL_PCD_MODULE_ENABLED */
#ifdef HAL_PWR_MODULE_ENABLED
#include "stm32g0xx_hal_pwr.h"
#endif /* HAL_PWR_MODULE_ENABLED */
#ifdef HAL_RNG_MODULE_ENABLED
#include "stm32g0xx_hal_rng.h"
#endif /* HAL_RNG_MODULE_ENABLED */
#ifdef HAL_RTC_MODULE_ENABLED
#include "stm32g0xx_hal_rtc.h"
#endif /* HAL_RTC_MODULE_ENABLED */
#ifdef HAL_SMARTCARD_MODULE_ENABLED
#include "stm32g0xx_hal_smartcard.h"
#endif /* HAL_SMARTCARD_MODULE_ENABLED */
#ifdef HAL_SMBUS_MODULE_ENABLED
#include "stm32g0xx_hal_smbus.h"
#endif /* HAL_SMBUS_MODULE_ENABLED */
#ifdef HAL_SPI_MODULE_ENABLED
#include "stm32g0xx_hal_spi.h"
#endif /* HAL_SPI_MODULE_ENABLED */
#ifdef HAL_TIM_MODULE_ENABLED
#include "stm32g0xx_hal_tim.h"
#endif /* HAL_TIM_MODULE_ENABLED */
#ifdef HAL_UART_MODULE_ENABLED
#include "stm32g0xx_hal_uart.h"
#endif /* HAL_UART_MODULE_ENABLED */
#ifdef HAL_USART_MODULE_ENABLED
#include "stm32g0xx_hal_usart.h"
#endif /* HAL_USART_MODULE_ENABLED */
#ifdef HAL_WWDG_MODULE_ENABLED
#include "stm32g0xx_hal_wwdg.h"
#endif /* HAL_WWDG_MODULE_ENABLED */
/* Exported macro ------------------------------------------------------------*/
#ifdef USE_FULL_ASSERT
/**
* @brief The assert_param macro is used for functions parameters check.
* @param expr If expr is false, it calls assert_failed function
* which reports the name of the source file and the source
* line number of the call that failed.
* If expr is true, it returns no value.
* @retval None
*/
#define assert_param(expr) ((expr) ? (void)0U : assert_failed((uint8_t *)__FILE__, __LINE__))
/* Exported functions ------------------------------------------------------- */
void assert_failed(uint8_t *file, uint32_t line);
#else
#define assert_param(expr) ((void)0U)
#endif /* USE_FULL_ASSERT */
#ifdef __cplusplus
}
#endif
#endif /* STM32G0xx_HAL_CONF_H */

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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file stm32g0xx_it.h
* @brief This file contains the headers of the interrupt handlers.
******************************************************************************
* @attention
*
* Copyright (c) 2024 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32G0xx_IT_H
#define __STM32G0xx_IT_H
#ifdef __cplusplus
extern "C" {
#endif
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Exported types ------------------------------------------------------------*/
/* USER CODE BEGIN ET */
/* USER CODE END ET */
/* Exported constants --------------------------------------------------------*/
/* USER CODE BEGIN EC */
/* USER CODE END EC */
/* Exported macro ------------------------------------------------------------*/
/* USER CODE BEGIN EM */
/* USER CODE END EM */
/* Exported functions prototypes ---------------------------------------------*/
void NMI_Handler(void);
void HardFault_Handler(void);
void SVC_Handler(void);
void PendSV_Handler(void);
void SysTick_Handler(void);
/* USER CODE BEGIN EFP */
/* USER CODE END EFP */
#ifdef __cplusplus
}
#endif
#endif /* __STM32G0xx_IT_H */

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#include "Encoder.h"
void DS_EncoderInit(DS_Encoder *Encoder, GPIO_TypeDef *PortSignal1, uint16_t PinSignal1, GPIO_TypeDef *PortSignal2, uint16_t PinSignal2)
{
Encoder->Direction = 0;
Encoder->State = 0;
Encoder->PrevTick = HAL_GetTick();
Encoder->PortEncSignal1 = PortSignal1;
Encoder->PortEncSignal2 = PortSignal2;
Encoder->PinEncSignal1 = PinSignal1;
Encoder->PinEncSignal2 = PinSignal2;
Encoder->ValueSignal1 = 0;
Encoder->ValueSignal2 = 0;
}
void DS_EncoderUpdate(DS_Encoder *Encoder)
{
uint32_t CurrentTick = HAL_GetTick();
if((CurrentTick - Encoder->PrevTick) < 1)
return;
Encoder->PrevTick = CurrentTick;
//Обновим состояние первой сигнальной линии
GPIO_PinState Pin1State = HAL_GPIO_ReadPin(Encoder->PortEncSignal1, Encoder->PinEncSignal1);
if(Pin1State == GPIO_PIN_SET)
{
Encoder->ValueSignal1 = 1;
}
else
{
Encoder->ValueSignal1 = 0;
}
//Обновим состояние второй сигнальной линн
GPIO_PinState Pin2State = HAL_GPIO_ReadPin(Encoder->PortEncSignal2, Encoder->PinEncSignal2);
if(Pin2State == GPIO_PIN_SET)
{
Encoder->ValueSignal2 = 1;
}
else
{
Encoder->ValueSignal2 = 0;
}
//Рассчитываем в какую сторону повернули энкодер
//Если на первой высокий уровень, а на второй низкий - то в одну сторону
if (Encoder->ValueSignal1 == 1 && Encoder->ValueSignal2 == 0)
{
Encoder->Direction = 1;
}
//Если на первой низкий, а на второй высокий - то в другую
if (Encoder->ValueSignal1 == 0 && Encoder->ValueSignal2 == 1)
{
Encoder->Direction = -1;
}
//Как определились с направлением - ждём когда оба сигнала поднимутся в высокий уровень, фиксируем шаг, и сбрасываем флаг направления
if (Encoder->Direction != 0 && Encoder->ValueSignal1 == 1 && Encoder->ValueSignal2 == 1)
{
Encoder->State = Encoder->State + Encoder->Direction;
Encoder->Direction = 0;
}
}
int8_t DS_EncoderGetState(DS_Encoder *Encoder)
{
int8_t ValueToReturn = Encoder->State;
Encoder->State = 0;
return ValueToReturn;
}

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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : Main program body
******************************************************************************
* @attention
*
* Copyright (c) 2024 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "../../Library/DS_Button/Inc/DS_Button.h"
#include "../../Library/DS_MAX7219/Inc/DS_MAX7219.h"
#include "Encoder.h"
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
SPI_HandleTypeDef hspi1;
/* USER CODE BEGIN PV */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_SPI1_Init(void);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
* @brief The application entry point.
* @retval int
*/
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_SPI1_Init();
/* USER CODE BEGIN 2 */
DS_Button EncButton;
DS_ButtonInit(&EncButton, ENC_Button_GPIO_Port, ENC_Button_Pin);
DS_MAX7219 LCD;
DS_MAX7219_Init(&LCD, &hspi1, CS_GPIO_Port, CS_Pin);
int64_t DisplayData = 0;
DS_Encoder Encoder;
DS_EncoderInit(&Encoder, Enc_Line1_GPIO_Port, Enc_Line1_Pin, Enc_Line2_GPIO_Port, Enc_Line2_Pin);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
DS_ButtonUpdate(&EncButton);
DS_EncoderUpdate(&Encoder);
int8_t State = DS_EncoderGetState(&Encoder);
if(State !=0 )
{
DisplayData = DisplayData + State;
DS_MAX7219_Print(&LCD, DisplayData);
DS_MAX7219_UpdataDisplay(&LCD);
}
if(DS_ButtonRisingEdge(&EncButton))
{
DisplayData = 0;
DS_MAX7219_Print(&LCD, DisplayData);
DS_MAX7219_UpdataDisplay(&LCD);
}
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Configure the main internal regulator output voltage
*/
HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1);
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSIDiv = RCC_HSI_DIV1;
RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB buses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
{
Error_Handler();
}
}
/**
* @brief SPI1 Initialization Function
* @param None
* @retval None
*/
static void MX_SPI1_Init(void)
{
/* USER CODE BEGIN SPI1_Init 0 */
/* USER CODE END SPI1_Init 0 */
/* USER CODE BEGIN SPI1_Init 1 */
/* USER CODE END SPI1_Init 1 */
/* SPI1 parameter configuration*/
hspi1.Instance = SPI1;
hspi1.Init.Mode = SPI_MODE_MASTER;
hspi1.Init.Direction = SPI_DIRECTION_2LINES;
hspi1.Init.DataSize = SPI_DATASIZE_16BIT;
hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;
hspi1.Init.CLKPhase = SPI_PHASE_1EDGE;
hspi1.Init.NSS = SPI_NSS_SOFT;
hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2;
hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
hspi1.Init.CRCPolynomial = 7;
hspi1.Init.CRCLength = SPI_CRC_LENGTH_DATASIZE;
hspi1.Init.NSSPMode = SPI_NSS_PULSE_ENABLE;
if (HAL_SPI_Init(&hspi1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN SPI1_Init 2 */
/* USER CODE END SPI1_Init 2 */
}
/**
* @brief GPIO Initialization Function
* @param None
* @retval None
*/
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
/* USER CODE BEGIN MX_GPIO_Init_1 */
/* USER CODE END MX_GPIO_Init_1 */
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOA_CLK_ENABLE();
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(CS_GPIO_Port, CS_Pin, GPIO_PIN_RESET);
/*Configure GPIO pin : CS_Pin */
GPIO_InitStruct.Pin = CS_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(CS_GPIO_Port, &GPIO_InitStruct);
/*Configure GPIO pins : ENC_Button_Pin Enc_Line1_Pin Enc_Line2_Pin */
GPIO_InitStruct.Pin = ENC_Button_Pin|Enc_Line1_Pin|Enc_Line2_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_PULLDOWN;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* USER CODE BEGIN MX_GPIO_Init_2 */
/* USER CODE END MX_GPIO_Init_2 */
}
/* USER CODE BEGIN 4 */
/* USER CODE END 4 */
/**
* @brief This function is executed in case of error occurrence.
* @retval None
*/
void Error_Handler(void)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
__disable_irq();
while (1)
{
}
/* USER CODE END Error_Handler_Debug */
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t *file, uint32_t line)
{
/* USER CODE BEGIN 6 */
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */

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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file stm32g0xx_hal_msp.c
* @brief This file provides code for the MSP Initialization
* and de-Initialization codes.
******************************************************************************
* @attention
*
* Copyright (c) 2024 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN TD */
/* USER CODE END TD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN Define */
/* USER CODE END Define */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN Macro */
/* USER CODE END Macro */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* External functions --------------------------------------------------------*/
/* USER CODE BEGIN ExternalFunctions */
/* USER CODE END ExternalFunctions */
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
* Initializes the Global MSP.
*/
void HAL_MspInit(void)
{
/* USER CODE BEGIN MspInit 0 */
/* USER CODE END MspInit 0 */
__HAL_RCC_SYSCFG_CLK_ENABLE();
__HAL_RCC_PWR_CLK_ENABLE();
/* System interrupt init*/
/* USER CODE BEGIN MspInit 1 */
/* USER CODE END MspInit 1 */
}
/**
* @brief SPI MSP Initialization
* This function configures the hardware resources used in this example
* @param hspi: SPI handle pointer
* @retval None
*/
void HAL_SPI_MspInit(SPI_HandleTypeDef* hspi)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
if(hspi->Instance==SPI1)
{
/* USER CODE BEGIN SPI1_MspInit 0 */
/* USER CODE END SPI1_MspInit 0 */
/* Peripheral clock enable */
__HAL_RCC_SPI1_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
/**SPI1 GPIO Configuration
PA1 ------> SPI1_SCK
PA2 ------> SPI1_MOSI
*/
GPIO_InitStruct.Pin = GPIO_PIN_1|GPIO_PIN_2;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
GPIO_InitStruct.Alternate = GPIO_AF0_SPI1;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* USER CODE BEGIN SPI1_MspInit 1 */
/* USER CODE END SPI1_MspInit 1 */
}
}
/**
* @brief SPI MSP De-Initialization
* This function freeze the hardware resources used in this example
* @param hspi: SPI handle pointer
* @retval None
*/
void HAL_SPI_MspDeInit(SPI_HandleTypeDef* hspi)
{
if(hspi->Instance==SPI1)
{
/* USER CODE BEGIN SPI1_MspDeInit 0 */
/* USER CODE END SPI1_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_SPI1_CLK_DISABLE();
/**SPI1 GPIO Configuration
PA1 ------> SPI1_SCK
PA2 ------> SPI1_MOSI
*/
HAL_GPIO_DeInit(GPIOA, GPIO_PIN_1|GPIO_PIN_2);
/* USER CODE BEGIN SPI1_MspDeInit 1 */
/* USER CODE END SPI1_MspDeInit 1 */
}
}
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */

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/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file stm32g0xx_it.c
* @brief Interrupt Service Routines.
******************************************************************************
* @attention
*
* Copyright (c) 2024 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stm32g0xx_it.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN TD */
/* USER CODE END TD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/* External variables --------------------------------------------------------*/
/* USER CODE BEGIN EV */
/* USER CODE END EV */
/******************************************************************************/
/* Cortex-M0+ Processor Interruption and Exception Handlers */
/******************************************************************************/
/**
* @brief This function handles Non maskable interrupt.
*/
void NMI_Handler(void)
{
/* USER CODE BEGIN NonMaskableInt_IRQn 0 */
/* USER CODE END NonMaskableInt_IRQn 0 */
/* USER CODE BEGIN NonMaskableInt_IRQn 1 */
while (1)
{
}
/* USER CODE END NonMaskableInt_IRQn 1 */
}
/**
* @brief This function handles Hard fault interrupt.
*/
void HardFault_Handler(void)
{
/* USER CODE BEGIN HardFault_IRQn 0 */
/* USER CODE END HardFault_IRQn 0 */
while (1)
{
/* USER CODE BEGIN W1_HardFault_IRQn 0 */
/* USER CODE END W1_HardFault_IRQn 0 */
}
}
/**
* @brief This function handles System service call via SWI instruction.
*/
void SVC_Handler(void)
{
/* USER CODE BEGIN SVC_IRQn 0 */
/* USER CODE END SVC_IRQn 0 */
/* USER CODE BEGIN SVC_IRQn 1 */
/* USER CODE END SVC_IRQn 1 */
}
/**
* @brief This function handles Pendable request for system service.
*/
void PendSV_Handler(void)
{
/* USER CODE BEGIN PendSV_IRQn 0 */
/* USER CODE END PendSV_IRQn 0 */
/* USER CODE BEGIN PendSV_IRQn 1 */
/* USER CODE END PendSV_IRQn 1 */
}
/**
* @brief This function handles System tick timer.
*/
void SysTick_Handler(void)
{
/* USER CODE BEGIN SysTick_IRQn 0 */
/* USER CODE END SysTick_IRQn 0 */
HAL_IncTick();
/* USER CODE BEGIN SysTick_IRQn 1 */
/* USER CODE END SysTick_IRQn 1 */
}
/******************************************************************************/
/* STM32G0xx Peripheral Interrupt Handlers */
/* Add here the Interrupt Handlers for the used peripherals. */
/* For the available peripheral interrupt handler names, */
/* please refer to the startup file (startup_stm32g0xx.s). */
/******************************************************************************/
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */

176
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/**
******************************************************************************
* @file syscalls.c
* @author Auto-generated by STM32CubeMX
* @brief Minimal System calls file
*
* For more information about which c-functions
* need which of these lowlevel functions
* please consult the Newlib libc-manual
******************************************************************************
* @attention
*
* Copyright (c) 2020-2024 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* Includes */
#include <sys/stat.h>
#include <stdlib.h>
#include <errno.h>
#include <stdio.h>
#include <signal.h>
#include <time.h>
#include <sys/time.h>
#include <sys/times.h>
/* Variables */
extern int __io_putchar(int ch) __attribute__((weak));
extern int __io_getchar(void) __attribute__((weak));
char *__env[1] = { 0 };
char **environ = __env;
/* Functions */
void initialise_monitor_handles()
{
}
int _getpid(void)
{
return 1;
}
int _kill(int pid, int sig)
{
(void)pid;
(void)sig;
errno = EINVAL;
return -1;
}
void _exit (int status)
{
_kill(status, -1);
while (1) {} /* Make sure we hang here */
}
__attribute__((weak)) int _read(int file, char *ptr, int len)
{
(void)file;
int DataIdx;
for (DataIdx = 0; DataIdx < len; DataIdx++)
{
*ptr++ = __io_getchar();
}
return len;
}
__attribute__((weak)) int _write(int file, char *ptr, int len)
{
(void)file;
int DataIdx;
for (DataIdx = 0; DataIdx < len; DataIdx++)
{
__io_putchar(*ptr++);
}
return len;
}
int _close(int file)
{
(void)file;
return -1;
}
int _fstat(int file, struct stat *st)
{
(void)file;
st->st_mode = S_IFCHR;
return 0;
}
int _isatty(int file)
{
(void)file;
return 1;
}
int _lseek(int file, int ptr, int dir)
{
(void)file;
(void)ptr;
(void)dir;
return 0;
}
int _open(char *path, int flags, ...)
{
(void)path;
(void)flags;
/* Pretend like we always fail */
return -1;
}
int _wait(int *status)
{
(void)status;
errno = ECHILD;
return -1;
}
int _unlink(char *name)
{
(void)name;
errno = ENOENT;
return -1;
}
int _times(struct tms *buf)
{
(void)buf;
return -1;
}
int _stat(char *file, struct stat *st)
{
(void)file;
st->st_mode = S_IFCHR;
return 0;
}
int _link(char *old, char *new)
{
(void)old;
(void)new;
errno = EMLINK;
return -1;
}
int _fork(void)
{
errno = EAGAIN;
return -1;
}
int _execve(char *name, char **argv, char **env)
{
(void)name;
(void)argv;
(void)env;
errno = ENOMEM;
return -1;
}

79
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/**
******************************************************************************
* @file sysmem.c
* @author Generated by STM32CubeMX
* @brief System Memory calls file
*
* For more information about which C functions
* need which of these lowlevel functions
* please consult the newlib libc manual
******************************************************************************
* @attention
*
* Copyright (c) 2024 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* Includes */
#include <errno.h>
#include <stdint.h>
/**
* Pointer to the current high watermark of the heap usage
*/
static uint8_t *__sbrk_heap_end = NULL;
/**
* @brief _sbrk() allocates memory to the newlib heap and is used by malloc
* and others from the C library
*
* @verbatim
* ############################################################################
* # .data # .bss # newlib heap # MSP stack #
* # # # # Reserved by _Min_Stack_Size #
* ############################################################################
* ^-- RAM start ^-- _end _estack, RAM end --^
* @endverbatim
*
* This implementation starts allocating at the '_end' linker symbol
* The '_Min_Stack_Size' linker symbol reserves a memory for the MSP stack
* The implementation considers '_estack' linker symbol to be RAM end
* NOTE: If the MSP stack, at any point during execution, grows larger than the
* reserved size, please increase the '_Min_Stack_Size'.
*
* @param incr Memory size
* @return Pointer to allocated memory
*/
void *_sbrk(ptrdiff_t incr)
{
extern uint8_t _end; /* Symbol defined in the linker script */
extern uint8_t _estack; /* Symbol defined in the linker script */
extern uint32_t _Min_Stack_Size; /* Symbol defined in the linker script */
const uint32_t stack_limit = (uint32_t)&_estack - (uint32_t)&_Min_Stack_Size;
const uint8_t *max_heap = (uint8_t *)stack_limit;
uint8_t *prev_heap_end;
/* Initialize heap end at first call */
if (NULL == __sbrk_heap_end)
{
__sbrk_heap_end = &_end;
}
/* Protect heap from growing into the reserved MSP stack */
if (__sbrk_heap_end + incr > max_heap)
{
errno = ENOMEM;
return (void *)-1;
}
prev_heap_end = __sbrk_heap_end;
__sbrk_heap_end += incr;
return (void *)prev_heap_end;
}

302
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/**
******************************************************************************
* @file system_stm32g0xx.c
* @author MCD Application Team
* @brief CMSIS Cortex-M0+ Device Peripheral Access Layer System Source File
*
* This file provides two functions and one global variable to be called from
* user application:
* - SystemInit(): This function is called at startup just after reset and
* before branch to main program. This call is made inside
* the "startup_stm32g0xx.s" file.
*
* - SystemCoreClock variable: Contains the core clock (HCLK), it can be used
* by the user application to setup the SysTick
* timer or configure other parameters.
*
* - SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must
* be called whenever the core clock is changed
* during program execution.
*
* After each device reset the HSI (8 MHz then 16 MHz) is used as system clock source.
* Then SystemInit() function is called, in "startup_stm32g0xx.s" file, to
* configure the system clock before to branch to main program.
*
* This file configures the system clock as follows:
*=============================================================================
*-----------------------------------------------------------------------------
* System Clock source | HSI
*-----------------------------------------------------------------------------
* SYSCLK(Hz) | 16000000
*-----------------------------------------------------------------------------
* HCLK(Hz) | 16000000
*-----------------------------------------------------------------------------
* AHB Prescaler | 1
*-----------------------------------------------------------------------------
* APB Prescaler | 1
*-----------------------------------------------------------------------------
* HSI Division factor | 1
*-----------------------------------------------------------------------------
* PLL_M | 1
*-----------------------------------------------------------------------------
* PLL_N | 8
*-----------------------------------------------------------------------------
* PLL_P | 7
*-----------------------------------------------------------------------------
* PLL_Q | 2
*-----------------------------------------------------------------------------
* PLL_R | 2
*-----------------------------------------------------------------------------
* Require 48MHz for RNG | Disabled
*-----------------------------------------------------------------------------
*=============================================================================
******************************************************************************
* @attention
*
* Copyright (c) 2018-2021 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/** @addtogroup CMSIS
* @{
*/
/** @addtogroup stm32g0xx_system
* @{
*/
/** @addtogroup STM32G0xx_System_Private_Includes
* @{
*/
#include "stm32g0xx.h"
#if !defined (HSE_VALUE)
#define HSE_VALUE (8000000UL) /*!< Value of the External oscillator in Hz */
#endif /* HSE_VALUE */
#if !defined (HSI_VALUE)
#define HSI_VALUE (16000000UL) /*!< Value of the Internal oscillator in Hz*/
#endif /* HSI_VALUE */
#if !defined (LSI_VALUE)
#define LSI_VALUE (32000UL) /*!< Value of LSI in Hz*/
#endif /* LSI_VALUE */
#if !defined (LSE_VALUE)
#define LSE_VALUE (32768UL) /*!< Value of LSE in Hz*/
#endif /* LSE_VALUE */
/**
* @}
*/
/** @addtogroup STM32G0xx_System_Private_TypesDefinitions
* @{
*/
/**
* @}
*/
/** @addtogroup STM32G0xx_System_Private_Defines
* @{
*/
/************************* Miscellaneous Configuration ************************/
/* Note: Following vector table addresses must be defined in line with linker
configuration. */
/*!< Uncomment the following line if you need to relocate the vector table
anywhere in Flash or Sram, else the vector table is kept at the automatic
remap of boot address selected */
/* #define USER_VECT_TAB_ADDRESS */
#if defined(USER_VECT_TAB_ADDRESS)
/*!< Uncomment the following line if you need to relocate your vector Table
in Sram else user remap will be done in Flash. */
/* #define VECT_TAB_SRAM */
#if defined(VECT_TAB_SRAM)
#define VECT_TAB_BASE_ADDRESS SRAM_BASE /*!< Vector Table base address field.
This value must be a multiple of 0x200. */
#define VECT_TAB_OFFSET 0x00000000U /*!< Vector Table base offset field.
This value must be a multiple of 0x200. */
#else
#define VECT_TAB_BASE_ADDRESS FLASH_BASE /*!< Vector Table base address field.
This value must be a multiple of 0x200. */
#define VECT_TAB_OFFSET 0x00000000U /*!< Vector Table base offset field.
This value must be a multiple of 0x200. */
#endif /* VECT_TAB_SRAM */
#endif /* USER_VECT_TAB_ADDRESS */
/******************************************************************************/
/**
* @}
*/
/** @addtogroup STM32G0xx_System_Private_Macros
* @{
*/
/**
* @}
*/
/** @addtogroup STM32G0xx_System_Private_Variables
* @{
*/
/* The SystemCoreClock variable is updated in three ways:
1) by calling CMSIS function SystemCoreClockUpdate()
2) by calling HAL API function HAL_RCC_GetHCLKFreq()
3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
Note: If you use this function to configure the system clock; then there
is no need to call the 2 first functions listed above, since SystemCoreClock
variable is updated automatically.
*/
uint32_t SystemCoreClock = 16000000UL;
const uint32_t AHBPrescTable[16UL] = {0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 0UL, 1UL, 2UL, 3UL, 4UL, 6UL, 7UL, 8UL, 9UL};
const uint32_t APBPrescTable[8UL] = {0UL, 0UL, 0UL, 0UL, 1UL, 2UL, 3UL, 4UL};
/**
* @}
*/
/** @addtogroup STM32G0xx_System_Private_FunctionPrototypes
* @{
*/
/**
* @}
*/
/** @addtogroup STM32G0xx_System_Private_Functions
* @{
*/
/**
* @brief Setup the microcontroller system.
* @param None
* @retval None
*/
void SystemInit(void)
{
/* Configure the Vector Table location -------------------------------------*/
#if defined(USER_VECT_TAB_ADDRESS)
SCB->VTOR = VECT_TAB_BASE_ADDRESS | VECT_TAB_OFFSET; /* Vector Table Relocation */
#endif /* USER_VECT_TAB_ADDRESS */
}
/**
* @brief Update SystemCoreClock variable according to Clock Register Values.
* The SystemCoreClock variable contains the core clock (HCLK), it can
* be used by the user application to setup the SysTick timer or configure
* other parameters.
*
* @note Each time the core clock (HCLK) changes, this function must be called
* to update SystemCoreClock variable value. Otherwise, any configuration
* based on this variable will be incorrect.
*
* @note - The system frequency computed by this function is not the real
* frequency in the chip. It is calculated based on the predefined
* constant and the selected clock source:
*
* - If SYSCLK source is HSI, SystemCoreClock will contain the HSI_VALUE(**) / HSI division factor
*
* - If SYSCLK source is HSE, SystemCoreClock will contain the HSE_VALUE(***)
*
* - If SYSCLK source is LSI, SystemCoreClock will contain the LSI_VALUE
*
* - If SYSCLK source is LSE, SystemCoreClock will contain the LSE_VALUE
*
* - If SYSCLK source is PLL, SystemCoreClock will contain the HSE_VALUE(***)
* or HSI_VALUE(*) multiplied/divided by the PLL factors.
*
* (**) HSI_VALUE is a constant defined in stm32g0xx_hal_conf.h file (default value
* 16 MHz) but the real value may vary depending on the variations
* in voltage and temperature.
*
* (***) HSE_VALUE is a constant defined in stm32g0xx_hal_conf.h file (default value
* 8 MHz), user has to ensure that HSE_VALUE is same as the real
* frequency of the crystal used. Otherwise, this function may
* have wrong result.
*
* - The result of this function could be not correct when using fractional
* value for HSE crystal.
*
* @param None
* @retval None
*/
void SystemCoreClockUpdate(void)
{
uint32_t tmp;
uint32_t pllvco;
uint32_t pllr;
uint32_t pllsource;
uint32_t pllm;
uint32_t hsidiv;
/* Get SYSCLK source -------------------------------------------------------*/
switch (RCC->CFGR & RCC_CFGR_SWS)
{
case RCC_CFGR_SWS_0: /* HSE used as system clock */
SystemCoreClock = HSE_VALUE;
break;
case (RCC_CFGR_SWS_1 | RCC_CFGR_SWS_0): /* LSI used as system clock */
SystemCoreClock = LSI_VALUE;
break;
case RCC_CFGR_SWS_2: /* LSE used as system clock */
SystemCoreClock = LSE_VALUE;
break;
case RCC_CFGR_SWS_1: /* PLL used as system clock */
/* PLL_VCO = (HSE_VALUE or HSI_VALUE / PLLM) * PLLN
SYSCLK = PLL_VCO / PLLR
*/
pllsource = (RCC->PLLCFGR & RCC_PLLCFGR_PLLSRC);
pllm = ((RCC->PLLCFGR & RCC_PLLCFGR_PLLM) >> RCC_PLLCFGR_PLLM_Pos) + 1UL;
if(pllsource == 0x03UL) /* HSE used as PLL clock source */
{
pllvco = (HSE_VALUE / pllm);
}
else /* HSI used as PLL clock source */
{
pllvco = (HSI_VALUE / pllm);
}
pllvco = pllvco * ((RCC->PLLCFGR & RCC_PLLCFGR_PLLN) >> RCC_PLLCFGR_PLLN_Pos);
pllr = (((RCC->PLLCFGR & RCC_PLLCFGR_PLLR) >> RCC_PLLCFGR_PLLR_Pos) + 1UL);
SystemCoreClock = pllvco/pllr;
break;
case 0x00000000U: /* HSI used as system clock */
default: /* HSI used as system clock */
hsidiv = (1UL << ((READ_BIT(RCC->CR, RCC_CR_HSIDIV))>> RCC_CR_HSIDIV_Pos));
SystemCoreClock = (HSI_VALUE/hsidiv);
break;
}
/* Compute HCLK clock frequency --------------------------------------------*/
/* Get HCLK prescaler */
tmp = AHBPrescTable[((RCC->CFGR & RCC_CFGR_HPRE) >> RCC_CFGR_HPRE_Pos)];
/* HCLK clock frequency */
SystemCoreClock >>= tmp;
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/