1 原理图：
1、要操作LED需先使能573锁存器即将N LE端口即PD2置1。
2、由下图可知LED对应端口为PC8~15，所以只要将这些端口都置0LED就可以全亮了。
3、由于液晶使用了LD0~7和HD0~7即PC0~15所以使用LED势必和液晶产生冲突所以LED和液晶的使用要分开不可同时操作。
2 部分源码
main.c
#include "Headfile.h"
int main(void)
{
u8 i = 0;
SysTick_Config(SystemCoreClock/1000);
Delay_Ms(200);
//STM3210B_LCD_Init();
//LED和液晶不可同时操作
LEDInit();
LEDEnable(Bit_SET);
for(i = 0; i < 9; i++){
LEDSingleRun(i);
Delay_Ms(100);
}
LEDSingleRun(0);//关闭LED
for(i = 8; i > 0; i--){
LEDSingleRun(i);
Delay_Ms(100);
}
LEDSingleRun(0);
for(i = 0; i < 9; i++){
LEDRun(i);
Delay_Ms(100);
}
LEDSingleRun(0);
for(i = 8; i > 0; i--){
LEDRun(i);
Delay_Ms(100);
}
LEDSingleRun(0);
LEDEnable(Bit_RESET);
while(1);
}
LED.c
这里列些了多种LED操作方式，其中LEDRun是带锁存方式，LEDSingleRun是不带锁存方式。
PS：MDK的ARM开发环境中竟然没有intrins文件我只能自己写一个crol函数╮(╯▽╰)╭。（注释应该挺详细的了吧…）
#include "Headfile.h"
u16 _crol_(u16 val,u8 n)//16位数循环左移
{
n = n % 16;
u16 buf = val >> ( 16 - n );
val = val << n;
val |= buf;
return val;
//val ---> 0xFEFF
//n ---> 3
//0xFEFF-> 1111 1110 1111 1111
//buf ---> 0000 0000 0000 0111
//val ---> 1111 0111 1111 1000
//val ---> 1111 0111 1111 1111
}
void LEDInit(){
GPIO_InitTypeDef GPIOInitStruct;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_GPIOD,ENABLE);
GPIOInitStruct.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10|GPIO_Pin_11|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15;
GPIOInitStruct.GPIO_Speed = GPIO_Speed_50MHz;
GPIOInitStruct.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOC,&GPIOInitStruct);
GPIOInitStruct.GPIO_Pin = GPIO_Pin_2;
GPIOInitStruct.GPIO_Speed = GPIO_Speed_50MHz;
GPIOInitStruct.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOD,&GPIOInitStruct);
}
void LEDEnable(BitAction BitVal){
////Bit_RESET = 0,Bit_SET
GPIO_WriteBit(GPIOD,GPIO_Pin_2,BitVal);
}
void LEDSingleRun(u8 index){
if(index != 0){
GPIO_Write(GPIOC,_crol_(0xFEFF,index - 1) );
}else{
GPIO_Write(GPIOC,0xFFFF);
}
}
void LEDRun(u8 index){
if(index != 0){
GPIO_Write(GPIOC,(_crol_(0xFEFF,index - 1)
& GPIO_ReadOutputData(GPIOC)) );
}else{
GPIO_Write(GPIOC,0xFFFF);
}
}
Delay.c
u32 TimingDelay = 0;
void Delay_Ms(u32 nTime)
{
TimingDelay = nTime;
while(TimingDelay != 0);
}
stm32f10x_it.c
设定滴答定时器中断使达到1ms延时的功能。
/**
******************************************************************************
* @file I2S/SPI_I2S_Switch/stm32f10x_it.c
* @author MCD Application Team
* @version V3.5.0
* @date 08-April-2011
* @brief Main Interrupt Service Routines.
* This file provides template for all exceptions handler and peripherals
* interrupt service routine.
******************************************************************************
* @attention
*
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*
* <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2>
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x_it.h"
extern u32 TimingDelay;
/** @addtogroup STM32F10x_StdPeriph_Examples
* @{
*/
/** @addtogroup I2S_SPI_I2S_Switch
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/******************************************************************************/
/* Cortex-M3 Processor Exceptions Handlers */
/******************************************************************************/
/**
* @brief This function handles NMI exception.
* @param None
* @retval None
*/
void NMI_Handler(void)
{
}
/**
* @brief This function handles Hard Fault exception.
* @param None
* @retval None
*/
void HardFault_Handler(void)
{
/* Go to infinite loop when Hard Fault exception occurs */
while (1)
{}
}
/**
* @brief This function handles Memory Manage exception.
* @param None
* @retval None
*/
void MemManage_Handler(void)
{
/* Go to infinite loop when Memory Manage exception occurs */
while (1)
{}
}
/**
* @brief This function handles Bus Fault exception.
* @param None
* @retval None
*/
void BusFault_Handler(void)
{
/* Go to infinite loop when Bus Fault exception occurs */
while (1)
{}
}
/**
* @brief This function handles Usage Fault exception.
* @param None
* @retval None
*/
void UsageFault_Handler(void)
{
/* Go to infinite loop when Usage Fault exception occurs */
while (1)
{}
}
/**
* @brief This function handles Debug Monitor exception.
* @param None
* @retval None
*/
void DebugMon_Handler(void)
{
}
/**
* @brief This function handles SVCall exception.
* @param None
* @retval None
*/
void SVC_Handler(void)
{
}
/**
* @brief This function handles PendSV_Handler exception.
* @param None
* @retval None
*/
void PendSV_Handler(void)
{
}
/**
* @brief This function handles SysTick Handler.
* @param None
* @retval None
*/
void SysTick_Handler(void)
{
TimingDelay--;
}
/******************************************************************************/
/* STM32F10x Peripherals Interrupt Handlers */
/* Add here the Interrupt Handler for the used peripheral(s) (PPP), for the */
/* available peripheral interrupt handler's name please refer to the startup */
/* file (startup_stm32f10x_xx.s). */
/******************************************************************************/
/**
* @brief This function handles PPP interrupt request.
* @param None
* @retval None
*/
/*void PPP_Switch_IRQHandler(void)
{
}*/
/**
* @}
*/
/**
* @}
*/
/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
