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lcd.RAR
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- /*******************************************************************************
- STM32学习日志(7)----LCD测试程序
- 编译环境: EWARM V5.30
- 硬件环境: 南京万利 EK-STM32F
- 主芯片 : STM32F103VBT6
- STM32 FW: V3.0.0
- 作者 : szlihongtao
- 时间 : 2010-06-30
- 说明 : 1. 在 SysTick 定时中断程序中刷新LCD的显示
- 2. 实现了1个秒表计时器
- *******************************************************************************/
- /**
- ******************************************************************************
- * @file Project/Template/main.c
- * @author MCD Application Team
- * @version V3.0.0
- * @date 04/06/2009
- * @brief Main program body
- ******************************************************************************
- * @copy
- *
- * 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 2009 STMicroelectronics</center></h2>
- */
- /* Includes ------------------------------------------------------------------*/
- #include "stm32f10x.h"
- #include "stm32_m.h"
- #include "lcd.h"
- /** @addtogroup Template_Project
- * @{
- */
- /* Private typedef -----------------------------------------------------------*/
- /* Private define ------------------------------------------------------------*/
- /* Private macro -------------------------------------------------------------*/
- /* Private variables ---------------------------------------------------------*/
- /* Private function prototypes -----------------------------------------------*/
- /* Private functions ---------------------------------------------------------*/
- /**
- * @brief Main program.
- * @param None
- * @retval : None
- */
- bit f_tb; // 基本定时标志
- static INT16U tmr_1sec,cnt_sec;
- //******************************************************************************
- static void delayms(INT16U cnt)
- {
- INT16U i;
- while(cnt--)
- for (i=0; i<7333; i++);
- }
- //******************************************************************************
- // 延时50ms
- //******************************************************************************
- static void delay(void)
- {
- INT32U i;
- static INT32U jjj=5240*50;
- for (i=0; i<jjj; i++);
- }
- //******************************************************************************
- // 时钟设置初始化
- //******************************************************************************
- static void RCC_Configuration(void)
- {
- ErrorStatus HSEStartUpStatus;
- /*
- RCC_AdjustHSICalibrationValue 调整内部高速晶振(HSI)校准值
- RCC_ITConfig 使能或者失能指定的RCC中断
- RCC_ClearFlag 清除RCC的复位标志位
- RCC_GetITStatus 检查指定的RCC中断发生与否
- RCC_ClearITPendingBit 清除RCC的中断待处理位
- */
- /* RCC system reset(for debug purpose) */
- // 时钟系统复位
- RCC_DeInit();
- // 使能外部的8M晶振
- // 设置外部高速晶振(HSE)
- /* Enable HSE */
- RCC_HSEConfig(RCC_HSE_ON);
- // 使能或者失能内部高速晶振(HSI)
- RCC_HSICmd(DISABLE);
- // 等待HSE起振
- // 该函数将等待直到HSE就绪,或者在超时的情况下退出
- /* Wait till HSE is ready */
- HSEStartUpStatus = RCC_WaitForHSEStartUp();
- if(HSEStartUpStatus == SUCCESS)
- {
- /* HCLK = SYSCLK */
- // 设置AHB时钟(HCLK)
- RCC_HCLKConfig(RCC_SYSCLK_Div1); // 72 MHz
- /* PCLK1 = HCLK/2 */
- // 设置低速AHB时钟(PCLK1)
- RCC_PCLK1Config(RCC_HCLK_Div2); // 36 MHz
- /* PCLK2 = HCLK */
- // 设置高速AHB时钟(PCLK2)
- RCC_PCLK2Config(RCC_HCLK_Div1); // 72 MHz
- /* ADCCLK = PCLK2/8 */
- // 设置ADC时钟(ADCCLK)
- RCC_ADCCLKConfig(RCC_PCLK2_Div8);
- // 设置USB时钟(USBCLK)
- // USB时钟 = PLL时钟除以1.5
- RCC_USBCLKConfig(RCC_USBCLKSource_PLLCLK_1Div5);
- // 设置外部低速晶振(LSE)
- RCC_LSEConfig(RCC_LSE_OFF);
- // 使能或者失能内部低速晶振(LSI)
- // LSE晶振OFF
- RCC_LSICmd(DISABLE);
- // 设置RTC时钟(RTCCLK)
- // 选择HSE时钟频率除以128作为RTC时钟
- RCC_RTCCLKConfig(RCC_RTCCLKSource_HSE_Div128);
- // 使能或者失能RTC时钟
- // RTC时钟的新状态
- RCC_RTCCLKCmd(DISABLE);
- /* Flash 2 wait state */
- FLASH_SetLatency(FLASH_Latency_2);
- /* Enable Prefetch Buffer */
- FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
- /* PLLCLK = 8MHz * 9 = 72 MHz */
- // 设置PLL时钟源及倍频系数
- RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
- /* Enable PLL */
- // 使能或者失能PLL
- RCC_PLLCmd(ENABLE);
- /* Wait till PLL is ready */
- // 检查指定的RCC标志位设置与否
- while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
- {
- }
- /* Select PLL as system clock source */
- // 设置系统时钟(SYSCLK)
- RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
- /* Wait till PLL is used as system clock source */
- // 返回用作系统时钟的时钟源
- while(RCC_GetSYSCLKSource() != 0x08)
- {
- }
- }
- // 使能或者失能AHB外设时钟
- RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1
- |RCC_AHBPeriph_DMA2
- |RCC_AHBPeriph_SRAM
- |RCC_AHBPeriph_FLITF
- |RCC_AHBPeriph_CRC
- |RCC_AHBPeriph_FSMC
- |RCC_AHBPeriph_SDIO,DISABLE);
- // 使能或者失能APB1外设时钟
- RCC_APB1PeriphClockCmd(RCC_APB1Periph_ALL,DISABLE);
- // 强制或者释放高速APB(APB2)外设复位
- RCC_APB2PeriphResetCmd(RCC_APB2Periph_ALL,ENABLE);
- // 退出复位状态
- RCC_APB2PeriphResetCmd(RCC_APB2Periph_ALL,DISABLE);
- // 强制或者释放低速APB(APB1)外设复位
- RCC_APB1PeriphResetCmd(RCC_APB1Periph_ALL,ENABLE);
- // 强制或者释放后备域复位
- RCC_BackupResetCmd(ENABLE);
- // 使能或者失能时钟安全系统
- RCC_ClockSecuritySystemCmd(DISABLE);
- }
- //******************************************************************************
- // NVIC设置
- //******************************************************************************
- static void NVIC_Configuration(void)
- {
- NVIC_InitTypeDef NVIC_InitStructure;
- /* Configure one bit for preemption priority */
- NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
- /* Enable the EXTI4 Interrupt on PD.4 */
- NVIC_InitStructure.NVIC_IRQChannel = EXTI4_IRQn;
- NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
- NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
- NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
- NVIC_Init(&NVIC_InitStructure);
- }
- //******************************************************************************
- // SysTick设置初始化
- //******************************************************************************
- static void SysTick_Config1(void)
- {
- #define SystemFreq 72000000.0 // 单位为Hz
- #define TB_SysTick 2000.0 // 单位为uS
- INT32U ticks;
- ticks=(INT32U)((TB_SysTick/1000000.0)*SystemFreq);
- ticks=ticks;
- SysTick_Config(ticks);
- }
- //******************************************************************************
- // GPIO设置
- //******************************************************************************
- static void GPIO_Configuration(void)
- {
- GPIO_InitTypeDef GPIO_InitStructure;
- // 使能或者失能APB2外设时钟
- RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_GPIOD|RCC_APB2Periph_GPIOE, ENABLE);
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;
- GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
- GPIO_Init(GPIOC, &GPIO_InitStructure);
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3|GPIO_Pin_4; // key
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
- GPIO_Init(GPIOD, &GPIO_InitStructure);
- GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11;
- GPIO_Init(GPIOC, &GPIO_InitStructure); // lcd_comm
- GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All; // lcd_seg
- GPIO_Init(GPIOE, &GPIO_InitStructure);
- }
- //******************************************************************************
- // LED5亮
- //******************************************************************************
- void Led_RW_ON(void)
- {
- GPIO_SetBits(GPIOC,GPIO_Pin_4);
- }
- //******************************************************************************
- // LED5灭
- //******************************************************************************
- void Led_RW_OFF(void)
- {
- GPIO_ResetBits(GPIOC,GPIO_Pin_4);
- }
- //******************************************************************************
- // pos=0-3
- //******************************************************************************
- static void myWrite_char(u8 pos,char car,u8 f_dot)
- {
- write_char(&car,f_dot,pos);
- }
- //******************************************************************************
- static void disp_sec(INT16U cnt_sec)
- {
- INT8U min,sec;
- char ch;
- cnt_sec%=3600;
- min=cnt_sec/60;
- sec=cnt_sec%60;
- ch=0x30+min/10;
- myWrite_char(0,ch,0);
- ch=0x30+min%10;
- myWrite_char(1,ch,1); // 加小数点,隔开分钟与秒的显示
- ch=0x30+sec/10;
- myWrite_char(2,ch,0);
- ch=0x30+sec%10;
- myWrite_char(3,ch,0);
- }
- //******************************************************************************
- // 主程序
- //******************************************************************************
- int main(void)
- {
- RCC_Configuration();
- GPIO_Configuration();
- NVIC_Configuration();
- SysTick_Config1();
- Led_RW_ON();
- delay();
- Led_RW_OFF();
- //------------------------------------------------------------------------------
- write_string("STM3"); /*STM32 LCD demo*/
- delayms(1000);
- #if 0
- for(;;)
- {
- write_string("STM3"); /*STM32 LCD demo*/
- delayms(400);
- write_string("0 01");
- delayms(400);
- write_string("0 02");
- delayms(400);
- GPIOC->ODR ^= (1<<6); // led3 toogle
- }
- #endif
- //------------------------------------------------------------------------------
- #if 0
- for(;;)
- {
- INT8U i,ch;
- for(ch='0';ch<='9';++ch)
- {
- for(i=0;i<4;++i)
- myWrite_char(i,ch,0);
- delayms(400);
- }
- for(i=0;i<4;++i)
- myWrite_char(i,' ',0);
- delayms(800);
- for(ch='A';ch<='F';++ch)
- {
- for(i=0;i<4;++i)
- myWrite_char(i,ch,1);
- delayms(400);
- }
- for(i=0;i<4;++i)
- myWrite_char(i,'+',0);
- delayms(800);
- for(i=0;i<4;++i)
- myWrite_char(i,'-',0);
- delayms(800);
- }
- #endif
- //------------------------------------------------------------------------------
- for(;;)
- {
- if (f_tb) // 每隔2ms设置为1
- {
- f_tb=0;
- if (++tmr_1sec>=(1000/2))
- {
- tmr_1sec=0;
- disp_sec(++cnt_sec);
- GPIOC->ODR ^= GPIO_Pin_6; // led3 toogle
- }
- }
- }
- }
- //******************************************************************************
- #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 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) */
- /* Infinite loop */
- while (1)
- {
- }
- }
- #endif
- /**
- * @}
- */
- //******************************************************************************
- /******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/
- //******************************************************************************
- /*
- LED2---------PC7
- LED3---------PC6
- LED4---------PC5
- LED5---------PC4
- KEY2---------PD3
- KEY3---------PD4
- */
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