324 lines
9.2 KiB
C
324 lines
9.2 KiB
C
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/**
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******************************************************************************
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* @file : main.c
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* @brief : Main program body
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******************************************************************************
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** This notice applies to any and all portions of this file
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* that are not between comment pairs USER CODE BEGIN and
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* USER CODE END. Other portions of this file, whether
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* inserted by the user or by software development tools
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* are owned by their respective copyright owners.
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*
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* COPYRIGHT(c) 2018 STMicroelectronics
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "main.h"
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#include "gpio.h"
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/* USER CODE BEGIN Includes */
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#include "bitband.h"
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/* USER CODE END Includes */
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/* Private variables ---------------------------------------------------------*/
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/* USER CODE BEGIN PV */
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/* Private variables ---------------------------------------------------------*/
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/* USER CODE END PV */
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/* Private function prototypes -----------------------------------------------*/
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static void LL_Init(void);
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void SystemClock_Config(void);
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/* USER CODE BEGIN PFP */
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/* Private function prototypes -----------------------------------------------*/
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/* USER CODE END PFP */
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/* USER CODE BEGIN 0 */
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/* USER CODE END 0 */
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/**
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* @brief The application entry point.
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*
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* @retval None
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*/
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int main(void)
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{
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/* USER CODE BEGIN 1 */
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/* USER CODE END 1 */
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/* MCU Configuration----------------------------------------------------------*/
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/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
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LL_Init();
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/* USER CODE BEGIN Init */
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/* USER CODE END Init */
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/* Configure the system clock */
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SystemClock_Config();
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/* USER CODE BEGIN SysInit */
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/* USER CODE END SysInit */
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/* Initialize all configured peripherals */
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MX_GPIO_Init();
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/* USER CODE BEGIN 2 */
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/* USER CODE END 2 */
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/* Infinite loop */
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/* USER CODE BEGIN WHILE */
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asm volatile(
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" movs r3, #1000 \n\t"
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"1: subs r3, #1 \n\t"
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" bne 1b \n\t"
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: : : "r3", "cc"
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);
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asm volatile("\tmovs r3, #1000\n1:\tsubs r3, #1\n\tbne 1b\n\t" : : : "r3", "cc");
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GPIOB->ODR = 0;
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volatile uint32_t v;
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uint8_t ledbytes[] = {0, 0xff, 0, 0xff, 0x55, 0xaa};
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__disable_irq();
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#define W_1f 5
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#define W_0f 0
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#define W_0s 3
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#define W_1af
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#define W_1as ++v; ++v
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#define W_0af ++v; ++v
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#define W_0as ++v; ++v
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/*
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#define SHIFTBIT(x) \
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if(b&(1<<x)) { \
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GPIOB->BSRR = (1 << 11); \
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for( v=W_1f; v != 0; --v); \
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W_1af; \
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GPIOB->BSRR = (1 << (16+11)); \
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W_1as; \
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} else { \
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GPIOB->BSRR = (1 << 11); \
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for( v=W_0f; v != 0; --v); \
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W_0af; \
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GPIOB->BSRR = (1 << (16+11)); \
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for( v=W_0s; v != 0; --v); \
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W_0as; \
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}
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*/
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#define SHIFTBIT(x) \
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if(b&(1<<x)) { \
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GPIOB->BSRR = (1 << 11); \
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asm volatile("\tmov r3, #10\n1:\tsubs r3, #1\n\tbne 1b\n\t" : : : "r3", "cc"); \
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GPIOB->BSRR = (1 << (16+11)); \
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asm volatile("\tmov r3, #03\n1:\tsubs r3, #1\n\tbne 1b\n\t" : : : "r3", "cc"); \
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} else { \
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GPIOB->BSRR = (1 << 11); \
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asm volatile("\tmov r3, #03\n1:\tsubs r3, #1\n\tbne 1b\n\t" : : : "r3", "cc"); \
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GPIOB->BSRR = (1 << (16+11)); \
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asm volatile("\tmov r3, #10\n1:\tsubs r3, #1\n\tbne 1b\n\t" : : : "r3", "cc"); \
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}
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__disable_irq();
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while(1)
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{
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uint8_t *bufPtr = ledbytes;
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uint32_t cnt = sizeof(ledbytes) + 1;
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while(--cnt) {
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uint32_t b = *bufPtr++;
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SHIFTBIT(7);
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SHIFTBIT(6);
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SHIFTBIT(5);
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SHIFTBIT(4);
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SHIFTBIT(3);
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SHIFTBIT(2);
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SHIFTBIT(1);
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if(b&1) {
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GPIOB->BSRR = 1 << 11;
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for( v=W_1f; v != 0; --v);
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W_1af;
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GPIOB->BSRR = 1 << (16+11);
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W_1as;
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} else {
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GPIOB->BSRR = 1 << 11;
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for( v=W_0f; v != 0; --v);
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W_0af;
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GPIOB->BSRR = 1 << (16+11);
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for( v=W_0s; v != 0; --v);
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++v; v=0;
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}
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}
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/* USER CODE END WHILE */
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/* USER CODE BEGIN 3 */
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for( v=100; v != 0; --v); //long
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}
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/* USER CODE END 3 */
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}
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static void LL_Init(void)
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{
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LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_AFIO);
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LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_PWR);
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NVIC_SetPriorityGrouping(NVIC_PRIORITYGROUP_4);
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/* System interrupt init*/
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/* MemoryManagement_IRQn interrupt configuration */
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NVIC_SetPriority(MemoryManagement_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 0));
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/* BusFault_IRQn interrupt configuration */
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NVIC_SetPriority(BusFault_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 0));
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/* UsageFault_IRQn interrupt configuration */
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NVIC_SetPriority(UsageFault_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 0));
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/* SVCall_IRQn interrupt configuration */
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NVIC_SetPriority(SVCall_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 0));
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/* DebugMonitor_IRQn interrupt configuration */
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NVIC_SetPriority(DebugMonitor_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 0));
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/* PendSV_IRQn interrupt configuration */
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NVIC_SetPriority(PendSV_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 0));
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/* SysTick_IRQn interrupt configuration */
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NVIC_SetPriority(SysTick_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 0));
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/**NOJTAG: JTAG-DP Disabled and SW-DP Enabled
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*/
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LL_GPIO_AF_Remap_SWJ_NOJTAG();
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}
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/**
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* @brief System Clock Configuration
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* @retval None
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*/
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void SystemClock_Config(void)
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{
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LL_FLASH_SetLatency(LL_FLASH_LATENCY_2);
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if(LL_FLASH_GetLatency() != LL_FLASH_LATENCY_2)
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{
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Error_Handler();
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}
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LL_RCC_HSE_Enable();
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/* Wait till HSE is ready */
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while(LL_RCC_HSE_IsReady() != 1)
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{
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}
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LL_RCC_PLL_ConfigDomain_SYS(LL_RCC_PLLSOURCE_HSE_DIV_1, LL_RCC_PLL_MUL_9);
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LL_RCC_PLL_Enable();
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/* Wait till PLL is ready */
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while(LL_RCC_PLL_IsReady() != 1)
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{
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}
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LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);
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LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_2);
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LL_RCC_SetAPB2Prescaler(LL_RCC_APB2_DIV_1);
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LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_PLL);
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/* Wait till System clock is ready */
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while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_PLL)
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{
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}
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LL_Init1msTick(72000000);
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LL_SYSTICK_SetClkSource(LL_SYSTICK_CLKSOURCE_HCLK);
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LL_SetSystemCoreClock(72000000);
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/* SysTick_IRQn interrupt configuration */
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NVIC_SetPriority(SysTick_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 0));
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}
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/* USER CODE BEGIN 4 */
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/* USER CODE END 4 */
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/**
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* @brief This function is executed in case of error occurrence.
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* @param file: The file name as string.
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* @param line: The line in file as a number.
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* @retval None
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*/
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void _Error_Handler(char *file, int line)
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{
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/* USER CODE BEGIN Error_Handler_Debug */
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/* User can add his own implementation to report the HAL error return state */
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while(1)
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{
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}
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/* USER CODE END Error_Handler_Debug */
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}
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#ifdef USE_FULL_ASSERT
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/**
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* @brief Reports the name of the source file and the source line number
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* where the assert_param error has occurred.
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* @param file: pointer to the source file name
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* @param line: assert_param error line source number
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* @retval None
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*/
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void assert_failed(uint8_t* file, uint32_t line)
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{
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/* USER CODE BEGIN 6 */
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/* User can add his own implementation to report the file name and line number,
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tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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/* USER CODE END 6 */
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}
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#endif /* USE_FULL_ASSERT */
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/**
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* @}
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*/
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/**
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* @}
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*/
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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