FD650B数码驱动
最近手头有几个4位带时钟点的数码管模块，使用的是FD650B驱动芯片，官方网站上没有找到编程资料，共享一下：
主要是头文件：
#ifndef __FD650_H
#define __FD650_H
#include "main.h"
/* FD650 Function Define */
#define FD650_BIT_ENABLE 0x01 //开启/关闭位
#define FD650_BIT_SLEEP 0x04 //睡眠控制位
#define FD650_BIT_7SEG 0x08 //7段控制位
#define FD650_BIT_INTENS1 0x10 //1级亮度
#define FD650_BIT_INTENS2 0x20 //2级亮度
#define FD650_BIT_INTENS3 0x30 //3级亮度
#define FD650_BIT_INTENS4 0x40 //4级亮度
#define FD650_BIT_INTENS5 0x50 //5级亮度
#define FD650_BIT_INTENS6 0x60 //6级亮度
#define FD650_BIT_INTENS7 0x70 //7级亮度
#define FD650_BIT_INTENS8 0x00 //8级亮度
#define FD650_SYSOFF 0x0400 //关闭显示、关闭键盘
#define FD650_SYSON ( FD650_SYSOFF | FD650_BIT_ENABLE ) //开启显示、键盘
#define FD650_SLEEPOFF FD650_SYSOFF //关闭睡眠
#define FD650_SLEEPON ( FD650_SYSOFF | FD650_BIT_SLEEP ) //开启睡眠
#define FD650_7SEG_ON ( FD650_SYSON | FD650_BIT_7SEG ) //开启七段模式
#define FD650_8SEG_ON ( FD650_SYSON | 0x00 ) //开启八段模式
#define FD650_SYSON_1 ( FD650_SYSON | FD650_BIT_INTENS1 ) //开启显示、键盘、1级亮度
//以此类推
#define FD650_SYSON_4 ( FD650_SYSON | FD650_BIT_INTENS4 ) //开启显示、键盘、4级亮度
//以此类推
#define FD650_SYSON_8 ( FD650_SYSON | FD650_BIT_INTENS8 ) //开启显示、键盘、8级亮度
//加载字数据命令
#define FD650_DIG0 0x1400 //数码管位0显示,需另加8位数据
#define FD650_DIG1 0x1500 //数码管位1显示,需另加8位数据
#define FD650_DIG2 0x1600 //数码管位2显示,需另加8位数据
#define FD650_DIG3 0x1700 //数码管位3显示,需另加8位数据
#define FD650_DOT 0x0080 //数码管小数点显示
//读取按键代码命令
#define FD650_GET_KEY 0x0700 //获取按键,返回按键代码
//延时宏定义
#define FD650_DELAY() HAL_Delay(1)
typedef struct
{
uint8_t character;
uint8_t bitmap;
}
LED_Bitmap_Typedef;
void FD650_Start(void);
void FD650_Stop(void);
void FD650_WriteOneByte(uint8_t WriteByte);
//uint8_t FD650_ReadOneByte(void);
void FD650_WriteCommand(uint16_t WriteCommand);
void FD650_Display_All(void);
void FD650_Display_Clean(void);
void FD650_Display(uint8_t Data1, uint8_t Data2, uint8_t Data3, uint8_t Data4, uint8_t Brightness);
void FD650_PutDisplayValue(uint16_t DispVal, uint8_t Brightness);
#endif
//
然后是源文件了，因为只有数码管显示，没有按键，所以取消了读取函数：
#include "fd650.h"
#define FD650_SCL_SET() HAL_GPIO_WritePin(FD650_CLK_GPIO_Port,FD650_CLK_Pin,GPIO_PIN_SET)
#define FD650_SCL_CLR() HAL_GPIO_WritePin(FD650_CLK_GPIO_Port,FD650_CLK_Pin,GPIO_PIN_RESET)
#define FD650_SDA_SET() HAL_GPIO_WritePin(FD650_SDA_GPIO_Port,FD650_SDA_Pin,GPIO_PIN_SET)
#define FD650_SDA_CLR() HAL_GPIO_WritePin(FD650_SDA_GPIO_Port,FD650_SDA_Pin,GPIO_PIN_RESET)
/* the numbering of the frontpanel LED:
--0--
5| |1
--6--
4| |2
--3-- .7
*/
uint8_t FD650_DispSegCode[]= {0x3F, 0x06, 0x5B, 0x4F, 0x66, 0x6D, 0x7D, 0x07, 0x7F, 0x6F, 0x77, 0x7C, 0x39, 0x5E, 0x79, 0x71}; //共阴段码
const LED_Bitmap_Typedef BCD_decode_tab[] =
{
{'0', 0x3F}, {'1', 0x06}, {'2', 0x5B}, {'3', 0x4F},
{'4', 0x66}, {'5', 0x6D}, {'6', 0x7D}, {'7', 0x07},
{'8', 0x7F}, {'9', 0x6F}, {'a', 0x77}, {'A', 0x77},
{'b', 0x7C}, {'B', 0x7C}, {'c', 0x58}, {'C', 0x39},
{'d', 0x5E}, {'D', 0x5E}, {'e', 0x79}, {'E', 0x79},
{'f', 0x71}, {'F', 0x71}, {'L', 0x38}, {'P', 0x73},
{'r', 0x50}, {'t', 0x78}, {'n', 0x54}, {'o', 0x5c},
{'U', 0x3e}, {'s', 0x6D}, {'H', 0x76}, {'h', 0x74},
{'-', 0x40}, {'N', 0x37}, {'O', 0x3F},
};//BCD码字映射
void FD650_Start(void)
/**
* \brief FD650_Start
*
* \param None
*
* \retval None
*/
{
// FD650_SDA_D_OUT(); //SDA输出模式
FD650_SDA_SET();
FD650_SCL_SET();
FD650_DELAY();
FD650_SDA_CLR();
FD650_DELAY();
FD650_SCL_CLR();
}
void FD650_Stop(void)
/**
* \brief FD650_Stop
*
* \param None
*
* \retval None
*/
{
// FD650_SDA_D_OUT(); //SDA输出模式
FD650_SDA_CLR();
FD650_DELAY();
FD650_SCL_SET();
FD650_DELAY();
FD650_SDA_SET();
FD650_DELAY();
// FD650_SDA_D_IN(); //SDA输入模式
}
void FD650_WriteOneByte(uint8_t WriteByte)
/**
* \brief Write One Byte data
*
* \param WriteByte
*
* \retval None
*/
{
uint8_t i;
// FD650_SDA_D_OUT(); //SDA输出模式
for(i = 0; i != 8; i++)
{
if(WriteByte & 0x80)
{
FD650_SDA_SET();
}
else
{
FD650_SDA_CLR();
}
FD650_DELAY();
FD650_SCL_SET();
WriteByte <<= 1;
FD650_DELAY();
FD650_SCL_CLR();
}
// FD650_SDA_D_IN(); //SDA输入模式
FD650_SDA_SET();
FD650_DELAY();
FD650_SCL_SET();
FD650_DELAY();
FD650_SCL_CLR();
}
//uint8_t FD650_ReadOneByte(void)
///**
//* \brief Read One Byte data
//*
//* \param WriteByte
//*
//* \retval None
//*/
//{
// uint8_t i, ReadByte = 0;
// FD650_SDA_SET();
// FD650_SDA_D_IN(); //SDA输入模式
// for(i = 0; i != 8; i++)
// {
// FD650_DELAY();
// FD650_SCL_SET();
// FD650_DELAY();
// ReadByte <<= 1;
// if(FD650_SDA_READ()) ReadByte++;
// FD650_SCL_CLR();
// }
// FD650_SDA_SET();
// FD650_DELAY();
// FD650_SCL_SET();
// FD650_DELAY();
// FD650_SCL_CLR();
// return ReadByte;
//}
void FD650_WriteCommand(uint16_t WriteCommand)
/**
* \brief 通过发送命令参数
*
* \param WriteCommand
*
* \retval None
*/
{
FD650_Start();
FD650_WriteOneByte(((uint8_t)((WriteCommand >> 7) & 0x3E) | 0x40));
FD650_WriteOneByte((uint8_t)WriteCommand);
FD650_Stop();
}
void FD650_Display_All(void)
/**
* \brief display all
*
* \param None
*
* \retval None
*/
{
FD650_WriteCommand(FD650_SYSON_8);
FD650_WriteCommand(FD650_DIG0 | 0xFF );
FD650_WriteCommand(FD650_DIG1 | 0xFF );
FD650_WriteCommand(FD650_DIG2 | 0xFF );
FD650_WriteCommand(FD650_DIG3 | 0xFF );
}
void FD650_Display_Clean(void)
/**
* \brief not display all
*
* \param None
*
* \retval None
*/
{
FD650_WriteCommand(FD650_SYSON_8);
FD650_WriteCommand(FD650_DIG0 | 0x00);
FD650_WriteCommand(FD650_DIG1 | 0x00);
FD650_WriteCommand(FD650_DIG2 | 0x00);
FD650_WriteCommand(FD650_DIG3 | 0x00);
}
void FD650_Display(uint8_t Data1, uint8_t Data2, uint8_t Data3, uint8_t Data4, uint8_t Brightness)
/**
* \brief not display all
*
* \param None
*
* \retval None
*/
{
FD650_WriteCommand(FD650_SYSON | Brightness);
FD650_WriteCommand(FD650_DIG0 | FD650_DispSegCode[Data1]);
FD650_WriteCommand(FD650_DIG1 | FD650_DispSegCode[Data2]);
FD650_WriteCommand(FD650_DIG2 | FD650_DispSegCode[Data3]);
FD650_WriteCommand(FD650_DIG3 | FD650_DispSegCode[Data4]);
}
void FD650_PutDisplayValue(uint16_t DispVal, uint8_t Brightness)
{
FD650_Display(DispVal / 1000 % 10, DispVal / 100 % 10, DispVal / 10 % 10, DispVal / 1 % 10, Brightness);
}
//
单片机使用的是STM32F103C8的最小系统板，主时钟频率8M，
硬件端口使用
PB10----SCL,
PB11----SDA.
FD650B的推荐频率在100KHz，因为只是验证驱动，直接套用的延时函数是HAL_Delay(1)微秒延时，造成刷屏比较慢，实际使用可以根据情况调整。