以下小程序在EK-STM32实验板上通过.顺便那位高手
推荐一块最小12位的Led显示芯片,2块zlg7290c成本太高
最好系内建晶震和I2C接口,谢谢!!
#include "stm32f10x_lib.h"
void RCC_Configuration(void);
void GPIO_Configuration(void);
void NVIC_Configuration(void);
void SysTick_Config(void);
void Led_RW_ON(void);
void Led_RW_OFF(void);
void Led_RE_ON(void);
void Led_RE_OFF(void);
void delay(void);
int main(void)
{
#ifdef DEBUG
debug();
#endif
RCC_Configuration();
GPIO_Configuration();
NVIC_Configuration();
SysTick_Config();
while (1)
{
Led_RW_ON();
Led_RE_ON();
delay();
Led_RW_OFF();
Led_RE_OFF();
delay();
Led_RW_ON();
Led_RE_ON();
delay();
Led_RW_OFF();
Led_RE_OFF();
delay();
Led_RW_ON();
Led_RE_OFF();
delay();
Led_RW_OFF();
Led_RE_ON();
delay();
Led_RW_ON();
Led_RE_OFF();
delay();
Led_RW_OFF();
Led_RE_ON();
delay();
Led_RW_ON();
Led_RE_OFF();
delay();
Led_RW_OFF();
Led_RE_ON();
delay();
Led_RW_ON();
Led_RE_OFF();
delay();
Led_RW_OFF();
Led_RE_ON();
delay();
Led_RW_ON();
Led_RE_ON();
delay();
Led_RW_OFF();
Led_RE_OFF();
delay();
Led_RW_ON();
Led_RE_ON();
delay();
Led_RW_OFF();
Led_RE_OFF();
delay();
Led_RW_ON();
Led_RE_ON();
delay();
}
}
void RCC_Configuration(void)
{
ErrorStatus HSEStartUpStatus;
/* RCC system reset(for debug purpose) */
RCC_DeInit();
/* Enable HSE */
RCC_HSEConfig(RCC_HSE_ON);
/* Wait till HSE is ready */
HSEStartUpStatus = RCC_WaitForHSEStartUp();
if(HSEStartUpStatus == SUCCESS)
{
/* HCLK = SYSCLK */
RCC_HCLKConfig(RCC_SYSCLK_Div1);
/* PCLK2 = HCLK */
RCC_PCLK2Config(RCC_HCLK_Div1);
/* PCLK1 = HCLK/2 */
RCC_PCLK1Config(RCC_HCLK_Div2);
/* ADCCLK = PCLK2/6 */
RCC_ADCCLKConfig(RCC_PCLK2_Div6);
/* Flash 2 wait state */
FLASH_SetLatency(FLASH_Latency_2);
/* Enable Prefetch Buffer */
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
/* PLLCLK = 4MHz * 9 = 36 MHz */
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
/* Enable PLL */
RCC_PLLCmd(ENABLE);
/* Wait till PLL is ready */
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
{
}
/* Select PLL as system clock source */
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
/* Wait till PLL is used as system clock source */
while(RCC_GetSYSCLKSource() != 0x08)
{
}
}
/* Enable GPIOA, GPIOB, GPIOC, GPIOD, GPIOE and AFIO clocks */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB |RCC_APB2Periph_GPIOC
| RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOE | RCC_APB2Periph_AFIO, ENABLE);
/* TIM2 clocks enable */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
/* CAN Periph clock enable */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN, ENABLE);
}
/*******************************************************************************
* Function Name : GPIO_Configuration
* Description : Configures the different GPIO ports.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_5 |GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOC, &GPIO_InitStructure);
}
/*******************************************************************************
* Function Name : NVIC_Configuration
* Description : Configures the NVIC and Vector Table base address.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void NVIC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
#ifdef VECT_TAB_RAM
/* Set the Vector Table base location at 0x20000000 */
NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
#else /* VECT_TAB_FLASH */
/* Set the Vector Table base location at 0x08000000 */
NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
#endif
/* Configure the Priority Group to 2 bits */
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
/* enabling interrupt */
NVIC_InitStructure.NVIC_IRQChannel=TIM2_IRQChannel;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
/* Enable the EXTI3 Interrupt on PD.3 */
NVIC_InitStructure.NVIC_IRQChannel = EXTI3_IRQChannel;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
/* Enable the EXTI4 Interrupt on PD.4 */
NVIC_InitStructure.NVIC_IRQChannel = EXTI4_IRQChannel;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
/* Configure the SysTick handler priority */
NVIC_SystemHandlerPriorityConfig(SystemHandler_SysTick, 2, 0);
}
void SysTick_Config(void)
{
/* Configure HCLK clock as SysTick clock source */
SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK);
/* SysTick interrupt each 100 Hz with HCLK equal to 72MHz */
SysTick_SetReload(720000);
/* Enable the SysTick Interrupt */
SysTick_ITConfig(ENABLE);
/* Enable the SysTick Counter */
SysTick_CounterCmd(SysTick_Counter_Enable);
}
void delay()
{
int i;
for (i=0; i<0xfffff; i++);
}
void Led_RW_ON(void)
{
GPIO_SetBits(GPIOC, GPIO_Pin_6 | GPIO_Pin_7 );
}
void Led_RW_OFF(void)
{
GPIO_ResetBits(GPIOC, GPIO_Pin_6 | GPIO_Pin_7 );
}
void Led_RE_ON(void)
{
GPIO_SetBits(GPIOC, GPIO_Pin_4 | GPIO_Pin_5 );
}
void Led_RE_OFF(void)
{
GPIO_ResetBits(GPIOC, GPIO_Pin_4 | GPIO_Pin_5 );
}
#ifdef DEBUG
/*******************************************************************************
* Function Name : assert_failed
* Description : Reports the name of the source file and the source line number
* where the assert error has occurred.
* Input : - file: pointer to the source file name
* - line: assert error line source number
* Output : None
* Return : None
*******************************************************************************/
void assert_failed(u8* file, u32 line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d
", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/******************* (C) COPYRIGHT 2007 STMicroelectronics *****END OF FILE****/
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