#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
#define KEYDOWN 1//按键按下
#define KEYUP 0//按键d开
#define led_date P0 //LED数据口
bit key_first = 1 //按键第一次按下
bit key_state = KEYUP //按键状态
uchar key_value//键值
code uchar LED[] = {0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,}
//LED段码 共阳管
void main(void)
void key_scan(void)
void key_scan()
{
uchar key_buff,key_date
key_date = P1 &0xFF
if(key_date != 0xFF)
{
if(key_state != KEYDOWN)
{
if(key_first == 1)
{
key_buff = key_date
key_first = 0
}
else
{
if(key_date == key_buff)
{
key_value = ~key_date
key_state = KEYDOWN
}
}
}
}
else
{
key_first = 1
key_state = KEYUP
}
}
void main()
{
while(1)
{
key_scan()
switch(key_value)
{
case 0x01:
{
led_date = LED[1]
}break
case 0x02:
{
led_date = LED[2]
}break
case 0x04:
{
led_date = LED[3]
}break
case 0x08:
{
led_date = LED[4]
}break
case 0x10:
{
led_date = LED[5]
}break
case 0x20:
{
led_date = LED[6]
}break
case 0x40:
{
led_date = LED[7]
}break
case 0x80:
{
led_date = LED[8]
}break
default: break
}
}
}
下面这个代码会短一些
#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
#define KEYDOWN 1//按键按下
#define KEYUP 0//按键d开
#define led_date P0 //LED数据口
bit key_first = 1 //按键第一次按下
bit key_state = KEYUP //按键状态
uchar key_value//键值
code uchar LED[] = {0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,}
//LED段码 共阳管
void main(void)
void key_scan(void)
void key_scan()
{
uchar i,key_buff,key_date
key_date = P1 &0xFF
if(key_date != 0xFF)
{
if(key_state != KEYDOWN)
{
if(key_first == 1)
{
key_buff = key_date
key_first = 0
}
else
{
if(key_date == key_buff)
{
for(i=0i<8i++)
{
if(!((key_date>>i)&0x01))
{
break
}
}
key_value = LED[i+1]
key_state = KEYDOWN
}
}
}
}
else
{
key_first = 1
key_state = KEYUP
}
}
void main()
{
while(1)
{
key_scan()
led_date = key_value
}
}
在mian函数里面写程序，具体主函数如下：#include "stm32f10x_lib.h"
int m=0
int n=0
#include "lcd.h"
char b[10]={'0','1','2','3','4','5','6','7','8','9'}
typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus
vu32 ret
volatile TestStatus TestRx
void RCC_Configuration(void)
void GPIO_Configuration(void)
void NVIC_Configuration(void)
void CAN_Config(void)
TestStatus CAN_Polling(void)
TestStatus CAN_Interrupt(void)
void SysTick_Config(void)
void LcdShow_Init(void)
void Led_Config(void)
void Button_Config(void)
void Led_RW_ON(void)
void Led_RW_OFF(void)
void delay(void)
void delay()
{
int i,j
j=0
for (i=0i<0xfffffi++) j++
}
EXTI_InitTypeDef EXTI_InitStructure
int main(void)
{
char a[26]={'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P',
'Q','R','S','T','U','V','W','X','Y','Z'}
#ifdef DEBUG
debug()
#endif
RCC_Configuration()
GPIO_Configuration()
NVIC_Configuration()
SysTick_Config()
LcdShow_Init()
Led_Config()
Button_Config()
GPIO_EXTILineConfig(GPIO_PortSourceGPIOD, GPIO_PinSource3)
EXTI_InitStructure.EXTI_Line = EXTI_Line3
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling
EXTI_InitStructure.EXTI_LineCmd = ENABLE
EXTI_Init(&EXTI_InitStructure)
GPIO_EXTILineConfig(GPIO_PortSourceGPIOD, GPIO_PinSource4)
EXTI_InitStructure.EXTI_Line = EXTI_Line4
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling
EXTI_InitStructure.EXTI_LineCmd = ENABLE
EXTI_Init(&EXTI_InitStructure)
while(1)
{
write_char(a+m,0,0)
n=a[m]
delay()
delay()
if(m==26)
{m=0}
}
}
void RCC_Configuration(void)
{
ErrorStatus HSEStartUpStatus
RCC_HSEConfig(RCC_HSE_ON)
HSEStartUpStatus = RCC_WaitForHSEStartUp()
if(HSEStartUpStatus == SUCCESS)
{
RCC_HCLKConfig(RCC_SYSCLK_Div1)
RCC_PCLK2Config(RCC_HCLK_Div1)
RCC_PCLK1Config(RCC_HCLK_Div2)
RCC_ADCCLKConfig(RCC_PCLK2_Div6)
FLASH_SetLatency(FLASH_Latency_2)
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable)
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9)
RCC_PLLCmd(ENABLE)
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
{
}
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK)
while(RCC_GetSYSCLKSource() != 0x08)
{
}
}
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB |RCC_APB2Periph_GPIOC
| RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOE | RCC_APB2Periph_AFIO, ENABLE)
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE)
RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN, ENABLE)
}
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_5 |GPIO_Pin_6 | GPIO_Pin_7
| GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz
GPIO_Init(GPIOC, &GPIO_InitStructure)
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_11 | GPIO_Pin_12 |
GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING
GPIO_Init(GPIOD, &GPIO_InitStructure)
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU
GPIO_Init(GPIOD, &GPIO_InitStructure)
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP
GPIO_Init(GPIOD, &GPIO_InitStructure)
GPIO_PinRemapConfig(GPIO_Remap2_CAN,ENABLE)
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz
GPIO_Init(GPIOE, &GPIO_InitStructure)
}
void NVIC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStructure
#ifdef VECT_TAB_RAM
NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0)
#else
NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0)
#endif
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2)
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)
NVIC_InitStructure.NVIC_IRQChannel = EXTI3_IRQChannel
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE
NVIC_Init(&NVIC_InitStructure)
NVIC_InitStructure.NVIC_IRQChannel = EXTI4_IRQChannel
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE
NVIC_Init(&NVIC_InitStructure)
NVIC_SystemHandlerPriorityConfig(SystemHandler_SysTick, 2, 0)
}
void LcdShow_Init(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure
TIM_OCInitTypeDef TIM_OCInitStructure
TIM_TimeBaseStructure.TIM_Period = 8000
TIM_TimeBaseStructure.TIM_Prescaler = 17
TIM_TimeBaseStructure.TIM_ClockDivision = 0x0
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure)
TIM_ARRPreloadConfig(TIM2,DISABLE)
TIM_UpdateRequestConfig(TIM2,TIM_UpdateSource_Regular)
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Timing
TIM_OCInitStructure.TIM_Channel = TIM_Channel_1
TIM_OCInitStructure.TIM_Pulse = 4000
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High
TIM_OCInit(TIM2, &TIM_OCInitStructure)
TIM_OC1PreloadConfig(TIM2, TIM_OCPreload_Disable)
TIM_ITConfig(TIM2, TIM_IT_CC1 | TIM_IT_Update, ENABLE)
TIM_Cmd(TIM2, ENABLE)
}
void SysTick_Config(void)
{
SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK)
SysTick_SetReload(720000)
SysTick_ITConfig(ENABLE)
SysTick_CounterCmd(SysTick_Counter_Enable)
}
void Button_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD, ENABLE)
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3 | GPIO_Pin_4
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz
GPIO_Init(GPIOD, &GPIO_InitStructure)
}
void Led_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE)
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_4 | GPIO_Pin_5
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz
GPIO_Init(GPIOC, &GPIO_InitStructure)
}
void Led_RW_ON(void)
{
m++
}
void Led_RW_OFF(void)
{
int i,j
i=n/10
j=n%10
write_char(b+i,0,2)
write_char(b+j,0,3)
}
#ifdef DEBUG
void assert_failed(u8* file, u32 line)
{
while (1)
{
}
}
#endif
需要准备一个U盘就可以更换所有的LVDS接口的液晶屏程序。U盘升级方法:
把屏所对应的程序复制到U盘中
把U盘插到板上的USB口上
接上按键板,按住按键板上的任意一个按键再通电,直到看到按键板上的指示灯出现红绿交替闪烁后,再松开按键,直到指示灯闪烁结束后,拔掉电源,再拔掉U盘就OK了,重新通电即可. 看你选择用哪种方式刷程序，可以用USB接口，25针并口，U盘等，像你说的V29我们通常用U盘写（如果板上没USB接口就用自制的转接口（一端插U盘一端连接在板上，也就是4针的通常为兰色的接口。不要说找不到哦，板上4针的接口不多且还标明了的）写）按照你这屏的的型号先拷个M190A1程序到U盘，先插上U盘，再给板供电，当显示灯红绿交替闪烁时就说明正在写程序，当显示灯闪烁的频率加快了时就已经写好了，此时先断电，再拔U盘，之后就可以全部连上看图像对不对了（要连信号线，看有无干扰，非灯管原因引起的图像抖动，分辨率对不对等）。
至此，在写完程序后全部连接上时是要将驱动板、驱屏线、升压板、灯管线及按键上的显示灯（按键可以不要，但显示的状态灯一定要要）连接好（不要把屏线插错了），将板上电压跳到5V，要跳5V哦。
注意，刷好程序连接了全套的东西时在通电瞬间准备好拔电，防止因屏内的短路或因插屏线没插好引起的短路（甚至拿屏线时不小心的粗心大意拿成了反双八的屏线了）乐华板的好处就在这里，特别是PC板在通电很短的短时间内如果显示灯颜色不正常立即断电是绝大多数情况下可以避免烧板或烧屏的
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