Fix & Clean.

Src/board.c

@@ -1,12 +1,4 @@
 #include "board.h"
-#include "stm32g0xx_ll_rcc.h"
-#include "stm32g0xx_ll_bus.h"
-#include "stm32g0xx_ll_gpio.h"
-#include "stm32g0xx_ll_usart.h"
-#include "stm32g0xx_ll_dma.h"
-#include "stm32g0xx_ll_dmamux.h"
-#include "stm32g0xx_ll_i2c.h"
-#include "stm32g0xx_ll_spi.h"
 
 /* private variables */
 
@@ -25,8 +17,11 @@ static void USART1_UART_Init(void);
 /* Board perephireal Configuration  */
 void Board_Init(void)
 {
-  RCC->APBENR2 |= RCC_APBENR2_SYSCFGEN;
-  RCC->APBENR1 |= RCC_APBENR1_PWREN;
+  /* Main peripheral clock enable */
+  RCC->APBENR1 = (RCC_APBENR1_PWREN | RCC_APBENR1_I2C1EN | RCC_APBENR1_TIM3EN);
+  RCC->APBENR2 = (RCC_APBENR2_SYSCFGEN | RCC_APBENR2_SPI1EN | RCC_APBENR2_TIM1EN);
+  /* GPIO Ports Clock Enable */
+  RCC->IOPENR = (RCC_IOPENR_GPIOAEN | RCC_IOPENR_GPIOBEN | RCC_IOPENR_GPIOCEN);
 
   /* Peripheral interrupt init*/
   /* RCC_IRQn interrupt configuration */
@@ -56,7 +51,7 @@ void Board_Init(void)
   //TIM16_Init();
   //TIM17_Init();
 
-  USART1_UART_Init();
+  //USART1_UART_Init();
 }
 
 /**
@@ -110,9 +105,6 @@ void SystemClock_Config(void)
   */
 static void GPIO_Init(void)
 {
-  /* GPIO Ports Clock Enable */
-	RCC->IOPENR |= (RCC_IOPENR_GPIOAEN | RCC_IOPENR_GPIOBEN | RCC_IOPENR_GPIOCEN);
-
   /* EXTI Line: falling, no pull, input */
   // mode
   EXTI->EMR1 &= ~(EXTI_IMR1_IM14);
@@ -172,10 +164,10 @@ static void GPIO_Init(void)
   */
 static void DMA_Init(void)
 {
-
-  /* Init with LL driver */
   /* DMA controller clock enable */
-  RCC->AHBSMENR |= RCC_AHBENR_DMA1EN;
+  RCC->AHBENR |= RCC_AHBENR_DMA1EN;
+  /* enable DMA1 clock in Sleep/Stop mode */
+  //RCC->AHBSMENR |= RCC_AHBSMENR_DMA1SMEN;
 
   /* DMA interrupt init */
   /* DMA1_Channel1_IRQn interrupt configuration */
@@ -194,10 +186,6 @@ static void DMA_Init(void)
   */
 static void I2C1_Init(void)
 {
-  /* Peripheral clock enable */
-  RCC->APBENR1 |= RCC_APBENR1_I2C1EN;
-  RCC->IOPENR |= RCC_IOPENR_GPIOBEN;
-
   /** I2C1 GPIO Configuration
   PB8   ------> I2C1_SCL
   PB9   ------> I2C1_SDA
@@ -240,10 +228,6 @@ static void I2C1_Init(void)
   */
 static void SPI1_Init(void)
 {
-  /* Peripheral clock enable */
-  RCC->APBENR2 |= RCC_APBENR2_SPI1EN;
-  RCC->IOPENR |= RCC_IOPENR_GPIOBEN;
-
   /**SPI1 GPIO Configuration
   PB3   ------> SPI1_SCK
   PB5   ------> SPI1_MOSI
@@ -280,12 +264,7 @@ static void SPI1_Init(void)
   */
 static void TIM1_Init(void)
 {
-  /* Peripheral clock TIM1 enable */
-	RCC->APBENR2 |= RCC_APBENR2_TIM1EN;
-  /* Peripheral clock GPIOA enable */
-	RCC->IOPENR |= RCC_IOPENR_GPIOAEN;
-
-  /* target clock - 200 Hz */
+  /* target clock */
   TIM1->PSC = TIM1_PSC; // prescaler
   TIM1->ARR = TIM1_ARR; // auto reload value
   TIM1->CR1 = TIM_CR1_ARPE;
@@ -341,12 +320,7 @@ static void TIM1_Init(void)
   */
 static void TIM3_Init(void)
 {
-  /* Peripheral clock TIM1 enable */
-	RCC->APBENR1 |= RCC_APBENR1_TIM3EN;
-  /* Peripheral clock GPIOA and GPIOB enable */
-	RCC->IOPENR |= (RCC_IOPENR_GPIOAEN | RCC_IOPENR_GPIOBEN);
-
-  /* target clock - 200 Hz */
+  /* target clock */
   TIM3->PSC = TIM3_PSC; // prescaler
   TIM3->ARR = TIM3_ARR; // auto reload value
   TIM3->CR1 = TIM_CR1_ARPE;
@@ -531,7 +505,6 @@ static void USART1_UART_Init(void)
 {
   /* Peripheral clock enable */
   RCC->APBENR2 |= RCC_APBENR2_USART1EN;
-  RCC->IOPENR |= RCC_IOPENR_GPIOBEN;
 
   /**USART1 GPIO Configuration
   PB6   ------> USART1_TX

Src/main.c

@@ -51,7 +51,6 @@ typedef enum {
 
 /* USER CODE BEGIN PV */
 volatile flag_t Flag = {0};
-static LL_RCC_ClocksTypeDef rcc_clocks;
 /**
  * Nixi Tube cathodes map in Byte Array:
  * {E0 E9 E8 E7 E6 E5 E4 E3}