ch455h控制数码管

ch455h是一个4位BCD码数码管驱动器，可以通过单片机控制数码管的显示。下面是一个简单的示例代码：

#include <reg52.h>

sbit LATCH = P2^2;  // 设置锁存器的控制引脚

// 数码管显示的数字
unsigned char code num[] = {
    0x3F, 0x06, 0x5B, 0x4F, 0x66,
    0x6D, 0x7D, 0x07, 0x7F, 0x6F
};

void display(unsigned char dat) {  // 显示函数
    LATCH = 1;  // 锁存器输出高电平
    P0 = num[dat];  // 将要显示的数字写入P0口
    LATCH = 0;  // 锁存器输出低电平
}

void main() {
    unsigned char i = 0;

    while(1) {
        display(i);  // 显示数字i
        i++;
        if(i == 10) i = 0;
        delay(500);  // 延时500ms
    }
}

在这个示例中，我们将ch455h的输出连接到单片机的P0口，通过设置锁存器的控制引脚LATCH，将要显示的数字写入P0口，并输出到数码管上。因为ch455h是BCD码数码管驱动器，所以我们需要一个数字数组来存储要显示的数字的BCD码。在这个示例中，我们使用一个循环来逐个显示数字0到9，并使用延时函数delay来控制数字的刷新速度。

相关问题

一个ch455实现4x5矩阵键盘灯光，ch455h控制数码管，包含三个数码管共24个led

首先我们需要连接好矩阵键盘和数码管。矩阵键盘的行和列需要连接到CH455的输入引脚，数码管的引脚需要连接到CH455的输出引脚。

接下来我们需要编写代码来控制LED灯光和数码管。假设我们使用的是C语言，以下是一个简单的示例代码：

#include <reg51.h>

// 定义LED灯光和数码管引脚
sbit LED1=P2^0;
sbit LED2=P2^1;
sbit LED3=P2^2;
sbit LED4=P2^3;
sbit LED5=P2^4;
sbit LED6=P2^5;
sbit LED7=P2^6;
sbit LED8=P2^7;
sbit DIG1=P1^0;
sbit DIG2=P1^1;
sbit DIG3=P1^2;

// 定义矩阵键盘的行和列
sbit ROW1=P3^0;
sbit ROW2=P3^1;
sbit ROW3=P3^2;
sbit ROW4=P3^3;
sbit COL1=P3^4;
sbit COL2=P3^5;
sbit COL3=P3^6;
sbit COL4=P3^7;

// 定义矩阵键盘的按键值
unsigned char key_value;

// 定义LED灯光矩阵
unsigned char LED_MATRIX[4][5] = {
  {1, 0, 0, 0, 0},
  {0, 1, 0, 0, 0},
  {0, 0, 1, 0, 0},
  {0, 0, 0, 1, 0}
};

// 定义数码管显示值
unsigned char DIG_VALUE[3] = {0, 0, 0};

// 定义数码管显示码表
unsigned char DIG_TABLE[10] = {
  0x3F, // 0
  0x06, // 1
  0x5B, // 2
  0x4F, // 3
  0x66, // 4
  0x6D, // 5
  0x7D, // 6
  0x07, // 7
  0x7F, // 8
  0x6F  // 9
};

// 延时函数
void delay(unsigned int n)
{
  unsigned int i, j;
  for(i=0; i<n; i++)
    for(j=0; j<125; j++);
}

// 读取矩阵键盘的按键值
unsigned char read_key()
{
  ROW1 = 0;
  ROW2 = 1;
  ROW3 = 1;
  ROW4 = 1;
  if(COL1 == 0) return 1;
  if(COL2 == 0) return 2;
  if(COL3 == 0) return 3;
  if(COL4 == 0) return 10;
  
  ROW1 = 1;
  ROW2 = 0;
  ROW3 = 1;
  ROW4 = 1;
  if(COL1 == 0) return 4;
  if(COL2 == 0) return 5;
  if(COL3 == 0) return 6;
  if(COL4 == 0) return 11;
  
  ROW1 = 1;
  ROW2 = 1;
  ROW3 = 0;
  ROW4 = 1;
  if(COL1 == 0) return 7;
  if(COL2 == 0) return 8;
  if(COL3 == 0) return 9;
  if(COL4 == 0) return 12;
  
  ROW1 = 1;
  ROW2 = 1;
  ROW3 = 1;
  ROW4 = 0;
  if(COL1 == 0) return 13;
  if(COL2 == 0) return 0;
  if(COL3 == 0) return 14;
  if(COL4 == 0) return 15;
  
  return 255; // 没有按键按下
}

// 更新LED灯光
void update_led()
{
  unsigned char i, j;
  for(i=0; i<4; i++)
  {
    for(j=0; j<5; j++)
    {
      if(LED_MATRIX[i][j])
      {
        switch(i*5+j)
        {
          case 0: LED1 = 1; break;
          case 1: LED2 = 1; break;
          case 2: LED3 = 1; break;
          case 3: LED4 = 1; break;
          case 4: LED5 = 1; break;
          case 5: LED6 = 1; break;
          case 6: LED7 = 1; break;
          case 7: LED8 = 1; break;
        }
      }
      else
      {
        switch(i*5+j)
        {
          case 0: LED1 = 0; break;
          case 1: LED2 = 0; break;
          case 2: LED3 = 0; break;
          case 3: LED4 = 0; break;
          case 4: LED5 = 0; break;
          case 5: LED6 = 0; break;
          case 6: LED7 = 0; break;
          case 7: LED8 = 0; break;
        }
      }
    }
  }
}

// 更新数码管显示
void update_dig()
{
  DIG1 = 0;
  P2 = DIG_TABLE[DIG_VALUE[0]];
  delay(1);
  DIG1 = 1;
  
  DIG2 = 0;
  P2 = DIG_TABLE[DIG_VALUE[1]];
  delay(1);
  DIG2 = 1;
  
  DIG3 = 0;
  P2 = DIG_TABLE[DIG_VALUE[2]];
  delay(1);
  DIG3 = 1;
}

void main()
{
  // 初始化矩阵键盘和LED灯光
  ROW1 = 1;
  ROW2 = 1;
  ROW3 = 1;
  ROW4 = 1;
  COL1 = 1;
  COL2 = 1;
  COL3 = 1;
  COL4 = 1;
  LED1 = 0;
  LED2 = 0;
  LED3 = 0;
  LED4 = 0;
  LED5 = 0;
  LED6 = 0;
  LED7 = 0;
  LED8 = 0;
  
  while(1)
  {
    key_value = read_key(); // 读取矩阵键盘的按键值
    if(key_value != 255) // 如果有按键按下
    {
      // 根据按键值更新LED灯光和数码管显示
      switch(key_value)
      {
        case 1: LED_MATRIX[0][0] = !LED_MATRIX[0][0]; break;
        case 2: LED_MATRIX[0][1] = !LED_MATRIX[0][1]; break;
        case 3: LED_MATRIX[0][2] = !LED_MATRIX[0][2]; break;
        case 4: LED_MATRIX[0][3] = !LED_MATRIX[0][3]; break;
        case 5: LED_MATRIX[0][4] = !LED_MATRIX[0][4]; break;
        case 6: LED_MATRIX[1][0] = !LED_MATRIX[1][0]; break;
        case 7: LED_MATRIX[1][1] = !LED_MATRIX[1][1]; break;
        case 8: LED_MATRIX[1][2] = !LED_MATRIX[1][2]; break;
        case 9: LED_MATRIX[1][3] = !LED_MATRIX[1][3]; break;
        case 10: LED_MATRIX[1][4] = !LED_MATRIX[1][4]; break;
        case 11: LED_MATRIX[2][0] = !LED_MATRIX[2][0]; break;
        case 12: LED_MATRIX[2][1] = !LED_MATRIX[2][1]; break;
        case 13: LED_MATRIX[2][2] = !LED_MATRIX[2][2]; break;
        case 14: LED_MATRIX[2][3] = !LED_MATRIX[2][3]; break;
        case 15: LED_MATRIX[2][4] = !LED_MATRIX[2][4]; break;
        case 0: LED_MATRIX[3][0] = !LED_MATRIX[3][0]; break;
      }
      update_led();
      DIG_VALUE[0] = key_value % 10;
      DIG_VALUE[1] = (key_value / 10) % 10;
      DIG_VALUE[2] = (key_value / 100) % 10;
      update_dig();
    }
  }
}

这个示例代码实现了一个简单的4x5矩阵键盘控制LED灯光和数码管显示的功能。你可以根据自己的需求修改LED灯光矩阵和数码管显示值，来实现你想要的功能。同时也需要注意对应的硬件连接和引脚定义。

hc32l13x ch455h 4x5矩阵键盘，数码管驱动，按键使用gpio，一个ch455h控制三个数码管，每个按键按下电亮数码管中的一个led，具体实现代码

以下是一个示例代码，可以实现HC32L13X控制CH455H和4x5矩阵键盘以及数码管的驱动：

#include "hc32l13x.h"
#include "hc32l13x_clk.h"
#include "hc32l13x_gpio.h"
#include "hc32l13x_it.h"
#include "hc32l13x_rmu.h"
#include "hc32l13x_uart.h"

#define LED_PORT        GpioPortD
#define LED_PIN         GpioPin0
#define KEY1_PORT       GpioPortA
#define KEY1_PIN        GpioPin0
#define KEY2_PORT       GpioPortA
#define KEY2_PIN        GpioPin1
#define KEY3_PORT       GpioPortA
#define KEY3_PIN        GpioPin2
#define KEY4_PORT       GpioPortA
#define KEY4_PIN        GpioPin3
#define KEY5_PORT       GpioPortA
#define KEY5_PIN        GpioPin4
#define DIGIT1_PORT     GpioPortC
#define DIGIT1_PIN      GpioPin0
#define DIGIT2_PORT     GpioPortC
#define DIGIT2_PIN      GpioPin1
#define DIGIT3_PORT     GpioPortC
#define DIGIT3_PIN      GpioPin2

#define CH455H_CLK      8000000UL
#define CH455H_CS_PORT  GpioPortB
#define CH455H_CS_PIN   GpioPin0
#define CH455H_DI_PORT  GpioPortB
#define CH455H_DI_PIN   GpioPin1
#define CH455H_DO_PORT  GpioPortB
#define CH455H_DO_PIN   GpioPin2

#define DIGIT_MAX       999

static uint8_t s_u8Digit1 = 0;
static uint8_t s_u8Digit2 = 0;
static uint8_t s_u8Digit3 = 0;
static uint8_t s_u8LedState = 0;

static void LED_Init(void)
{
    stc_gpio_init_t stcGpioInit;

    /* 端口方向配置 */
    GPIO_StructInit(&stcGpioInit);
    stcGpioInit.u16PinDir = PIN_OUT;
    GPIO_Init(LED_PORT, LED_PIN, &stcGpioInit);

    /* 端口驱动能力配置 */
    GPIO_StructInit(&stcGpioInit);
    stcGpioInit.u32PinDrv = GPIO_DRV_HIGH;
    GPIO_Init(LED_PORT, LED_PIN, &stcGpioInit);

    GPIO_ResetPins(LED_PORT, LED_PIN);
}

static void KEY_Init(void)
{
    stc_gpio_init_t stcGpioInit;

    /* 端口方向配置 */
    GPIO_StructInit(&stcGpioInit);
    stcGpioInit.u16PinDir = PIN_IN;
    GPIO_Init(KEY1_PORT, KEY1_PIN, &stcGpioInit);
    GPIO_Init(KEY2_PORT, KEY2_PIN, &stcGpioInit);
    GPIO_Init(KEY3_PORT, KEY3_PIN, &stcGpioInit);
    GPIO_Init(KEY4_PORT, KEY4_PIN, &stcGpioInit);
    GPIO_Init(KEY5_PORT, KEY5_PIN, &stcGpioInit);

    /* 端口上拉 */
    GPIO_StructInit(&stcGpioInit);
    stcGpioInit.u16PinPUD = PIN_PU;
    GPIO_Init(KEY1_PORT, KEY1_PIN, &stcGpioInit);
    GPIO_Init(KEY2_PORT, KEY2_PIN, &stcGpioInit);
    GPIO_Init(KEY3_PORT, KEY3_PIN, &stcGpioInit);
    GPIO_Init(KEY4_PORT, KEY4_PIN, &stcGpioInit);
    GPIO_Init(KEY5_PORT, KEY5_PIN, &stcGpioInit);
}

static void DIGIT_Init(void)
{
    stc_gpio_init_t stcGpioInit;

    /* 端口方向配置 */
    GPIO_StructInit(&stcGpioInit);
    stcGpioInit.u16PinDir = PIN_OUT;
    GPIO_Init(DIGIT1_PORT, DIGIT1_PIN, &stcGpioInit);
    GPIO_Init(DIGIT2_PORT, DIGIT2_PIN, &stcGpioInit);
    GPIO_Init(DIGIT3_PORT, DIGIT3_PIN, &stcGpioInit);

    /* 端口上拉 */
    GPIO_StructInit(&stcGpioInit);
    stcGpioInit.u16PinPUD = PIN_PU;
    GPIO_Init(DIGIT1_PORT, DIGIT1_PIN, &stcGpioInit);
    GPIO_Init(DIGIT2_PORT, DIGIT2_PIN, &stcGpioInit);
    GPIO_Init(DIGIT3_PORT, DIGIT3_PIN, &stcGpioInit);

    /* 数码管初始化 */
    s_u8Digit1 = 0;
    s_u8Digit2 = 0;
    s_u8Digit3 = 0;
    GPIO_SetPins(DIGIT1_PORT, DIGIT1_PIN);
    GPIO_SetPins(DIGIT2_PORT, DIGIT2_PIN);
    GPIO_SetPins(DIGIT3_PORT, DIGIT3_PIN);
}

static void CH455H_Init(void)
{
    stc_gpio_init_t stcGpioInit;

    /* 端口方向配置 */
    GPIO_StructInit(&stcGpioInit);
    stcGpioInit.u16PinDir = PIN_OUT;
    GPIO_Init(CH455H_CS_PORT, CH455H_CS_PIN, &stcGpioInit);
    GPIO_Init(CH455H_DI_PORT, CH455H_DI_PIN, &stcGpioInit);

    /* 端口上拉 */
    GPIO_StructInit(&stcGpioInit);
    stcGpioInit.u16PinPUD = PIN_PU;
    GPIO_Init(CH455H_CS_PORT, CH455H_CS_PIN, &stcGpioInit);
    GPIO_Init(CH455H_DI_PORT, CH455H_DI_PIN, &stcGpioInit);

    /* CH455H初始化 */
    CH455H_Reset();
    CH455H_WriteByte(0x80);
    CH455H_WriteByte(0x02);
}

static void CH455H_Reset(void)
{
    GPIO_ResetPins(CH455H_CS_PORT, CH455H_CS_PIN);
    GPIO_SetPins(CH455H_DI_PORT, CH455H_DI_PIN);
    for (uint32_t i = 0; i < 8; i++)
    {
        GPIO_ResetPins(CH455H_CLK_PORT, CH455H_CLK_PIN);
        GPIO_SetPins(CH455H_CLK_PORT, CH455H_CLK_PIN);
    }
    GPIO_SetPins(CH455H_CS_PORT, CH455H_CS_PIN);
}

static void CH455H_WriteByte(uint8_t u8Data)
{
    GPIO_ResetPins(CH455H_CS_PORT, CH455H_CS_PIN);
    for (uint32_t i = 0; i < 8; i++)
    {
        GPIO_WritePins(CH455H_DI_PORT, CH455H_DI_PIN, (u8Data & 0x80) ? PIN_HIGH : PIN_LOW);
        u8Data <<= 1;
        GPIO_ResetPins(CH455H_CLK_PORT, CH455H_CLK_PIN);
        GPIO_SetPins(CH455H_CLK_PORT, CH455H_CLK_PIN);
    }
    GPIO_SetPins(CH455H_CS_PORT, CH455H_CS_PIN);
}

static void DIGIT_Display(uint8_t u8Digit1, uint8_t u8Digit2, uint8_t u8Digit3)
{
    static uint8_t s_u8DigitIndex = 0;

    switch (s_u8DigitIndex)
    {
        case 0:
            GPIO_ResetPins(DIGIT1_PORT, DIGIT1_PIN);
            GPIO_SetPins(DIGIT2_PORT, DIGIT2_PIN);
            GPIO_SetPins(DIGIT3_PORT, DIGIT3_PIN);
            break;
        case 1:
            GPIO_SetPins(DIGIT1_PORT, DIGIT1_PIN);
            GPIO_ResetPins(DIGIT2_PORT, DIGIT2_PIN);
            GPIO_SetPins(DIGIT3_PORT, DIGIT3_PIN);
            break;
        case 2:
            GPIO_SetPins(DIGIT1_PORT, DIGIT1_PIN);
            GPIO_SetPins(DIGIT2_PORT, DIGIT2_PIN);
            GPIO_ResetPins(DIGIT3_PORT, DIGIT3_PIN);
            break;
        default:
            break;
    }

    switch (s_u8DigitIndex)
    {
        case 0:
            LED_On(LED_PORT, LED_PIN);
            GPIO_SetPins(CH455H_DI_PORT, CH455H_DI_PIN);
            CH455H_WriteByte(u8Digit1);
            LED_Off(LED_PORT, LED_PIN);
            break;
        case 1:
            LED_On(LED_PORT, LED_PIN);
            GPIO_SetPins(CH455H_DI_PORT, CH455H_DI_PIN);
            CH455H_WriteByte(u8Digit2);
            LED_Off(LED_PORT, LED_PIN);
            break;
        case 2:
            LED_On(LED_PORT, LED_PIN);
            GPIO_SetPins(CH455H_DI_PORT, CH455H_DI_PIN);
            CH455H_WriteByte(u8Digit3);
            LED_Off(LED_PORT, LED_PIN);
            break;
        default:
            break;
    }

    s_u8DigitIndex++;
    if (s_u8DigitIndex >= 3)
    {
        s_u8DigitIndex = 0;
    }
}

static void KEY_Scan(void)
{
    if (!GPIO_ReadPins(KEY1_PORT, KEY1_PIN))
    {
        s_u8LedState ^= 0x01;
    }

    if (!GPIO_ReadPins(KEY2_PORT, KEY2_PIN))
    {
        s_u8LedState ^= 0x02;
    }

    if (!GPIO_ReadPins(KEY3_PORT, KEY3_PIN))
    {
        s_u8LedState ^= 0x04;
    }

    if (!GPIO_ReadPins(KEY4_PORT, KEY4_PIN))
    {
        s_u8LedState ^= 0x08;
    }

    if (!GPIO_ReadPins(KEY5_PORT, KEY5_PIN))
    {
        s_u8LedState ^= 0x10;
    }
}

int main(void)
{
    /* 系统时钟初始化 */
    CLK_HSEInit(CLK_HSE_ON);
    CLK_SetSysclkDiv(CLK_SYSCLK_DIV1);
    CLK_SetHCLK(CLK_HCLK_CLKSYS);
    CLK_SetSysclkSrc(CLK_SYSCLKSOURCE_HSE);
    CLK_SetPCLKDiv(CLK_PCLK_DIV1);

    /* 初始化LED、按键、数码管和CH455H */
    LED_Init();
    KEY_Init();
    DIGIT_Init();
    CH455H_Init();

    /* 主循环 */
    while (1)
    {
        /* 扫描按键 */
        KEY_Scan();

        /* 显示数字 */
        DIGIT_Display(s_u8Digit1, s_u8Digit2, s_u8Digit3);

        /* 更新数字 */
        s_u8Digit3++;
        if (s_u8Digit3 > 9)
        {
            s_u8Digit3 = 0;
            s_u8Digit2++;
            if (s_u8Digit2 > 9)
            {
                s_u8Digit2 = 0;
                s_u8Digit1++;
                if (s_u8Digit1 > 9)
                {
                    s_u8Digit1 = 0;
                }
            }
        }
    }
}

在上面的代码中，LED和按键分别使用了GPIO控制，数码管使用了HC455H控制。主循环中扫描按键、显示数字并更新数字。如果按键被按下，相应的LED将会翻转。