Ht1621b芯片显示屏驱动

关于HT1621b芯片的具体信息能够參考数据手冊上的内容：

CS : 片选输入接一上拉电阻当/CS 为高电平读写HT1621的数据和命令无效串行接口电路复位当/CS 为低电平和作为输入时读写HT1621的数据和命令有效.

WR : WRITE脉冲输入接一上拉电阻在/WR 信号的上升沿 DATA线上的数据写到HT1621.

DATA : 外接上拉电阻的串行数据输入/输出.

下面为芯片驱动程序（STM8单片机）：

#include "stm8s.h"#include "global.h"/* Private typedef -----------------------------------------------------------*//* Private define ------------------------------------------------------------*///显示芯片HT1621引脚定义#define HT1621_CS_PORT                GPIOC#define HT1621_CS_PIN                 GPIO_PIN_7#define Ht1621CsHigh                  (HT1621_CS_PORT->ODR |= (u8)(HT1621_CS_PIN))#define Ht1621CsLow                   (HT1621_CS_PORT->ODR &= (u8)(~HT1621_CS_PIN))#define HT1621_WR_PORT                GPIOC#define HT1621_WR_PIN                 GPIO_PIN_6#define Ht1621WrHigh                  (HT1621_WR_PORT->ODR |= (u8)(HT1621_WR_PIN))#define Ht1621WrLow                   (HT1621_WR_PORT->ODR &= (u8)(~HT1621_WR_PIN))#define HT1621_DATA_PORT              GPIOC#define HT1621_DATA_PIN               GPIO_PIN_5#define Ht1621DataHigh                (HT1621_DATA_PORT->ODR |= (u8)(HT1621_DATA_PIN))#define Ht1621DataLow                 (HT1621_DATA_PORT->ODR &= (u8)(~HT1621_DATA_PIN))//LCD屏背光PWM设定#define BLACK_LIGHT_PORT               GPIOD#define BLACK_LIGHT_PIN                GPIO_PIN_3#define LedPwmDuty(A)                  TIM2->CCR2H = (u8)((A)>> 8);TIM2->CCR2L = (u8)(A); #define LedOn()                        TIM2->CCER1 |= TIM2_CCER1_CC2E  #define LedOff()                       TIM2->CCER1 &= (~TIM2_CCER1_CC2E) #define  COMMAND_CODE                0x80  //命令码#define  WRITE_DATA_CODE             0xa0  //写命令#define  READ_DATA_CODE              0xc0  //读命令#define  DISPLAY_BEGIN_ADDR          (0X0F << 2) //显示起始地址#define  SYS_EN                      0x02#define  RC_256K                     0x30#define  BIAS_13                     0x52#define  TONE_ON                     0x12  //打开声音输出#define  TONE_OFF                    0x10#define  TONE_2K                     0xc0#define  TONE_4K                     0x80#define  LCD_ON                      0x06          /* Private variables ---------------------------------------------------------*/void Ht1621_WriteCommand(uint8_t Cmd);void Ht1621_WriteNBit(uint8_t BitCnt, uint8_t wData);/* Public functions ----------------------------------------------------------*/void Ht1621_Init(void);void Ht1621_WriteData(const uint8_t *wDataBuf);void Ht1621_BuzzerControl(uint8_t RunFlag);/*******************************************************************************函数：延时函数 ms 參数： 返回值：无*******************************************************************************/void Ht1621_Delay(uint8_t ms){   unsigned short jj;   for (jj = 1; jj <= ms; jj++)   {      nop();   }}/*******************************************************************************函数：HT1621初始化參数： 返回值：无*******************************************************************************/void Ht1621_Init(void){     Ht1621_WriteCommand(SYS_EN);   //SYS_EN 打开系统振荡器   Ht1621_Delay(5);      Ht1621_WriteCommand(RC_256K);   //RC_256K 系统时钟源 片内RC振荡器   Ht1621_Delay(5);      Ht1621_WriteCommand(BIAS_13);  //BIAS13 4个公共口    Ht1621_Delay(5);      Ht1621_WriteCommand(TONE_4K);  //TONE_2KC0  TONE_4K80    Ht1621_Delay(5);      Ht1621_WriteCommand(LCD_ON);   //LCD_ON 打开LCD偏压发生器   Ht1621_Delay(5);}/*******************************************************************************函数：HT1621 写一字节数据參数： 写数据的为位数 和 数据返回值：无*******************************************************************************/void Ht1621_WriteNBit(uint8_t wData , uint8_t BitCnt){   uint8_t i;      for(i=0; i< BitCnt; i++)   {      Ht1621WrLow;      Ht1621_Delay(2);            if((wData << i) & 0x80)      {         Ht1621DataHigh;      }      else       {         Ht1621DataLow;      }      Ht1621_Delay(2);            Ht1621WrHigh;      Ht1621_Delay(2);   }}/*******************************************************************************函数：HT1621 写数据操作（连续写  3位写操作命令+6位地址+ ...数据）參数： 写数据指针返回值：无*******************************************************************************/void Ht1621_WriteData(const uint8_t *wDataBuf){   uint8_t i;         Ht1621CsLow;   Ht1621_Delay(2);         Ht1621_WriteNBit(WRITE_DATA_CODE, 3);   Ht1621_WriteNBit(DISPLAY_BEGIN_ADDR, 6);            //TODO: 20140820  hzg  注意要相应原理图上的起始地址      for(i=0; i<12; i++)                                    {    Ht1621_WriteNBit(wDataBuf[i], 8);     }      Ht1621CsHigh;   Ht1621_Delay(2);}/*******************************************************************************函数：HT1621 写命令操作（12位命令数据）參数： 命令值返回值：无*******************************************************************************/void Ht1621_WriteCommand(uint8_t Cmd){   Ht1621CsLow;   Ht1621_Delay(2);      Ht1621_WriteNBit(COMMAND_CODE, 4);          Ht1621_WriteNBit(Cmd, 8);      Ht1621CsHigh;   Ht1621_Delay(2);}/*******************************************************************************函数：HT1621 蜂鸣器输出控制（12位命令数据）參数： 开关标志返回值：无*******************************************************************************/void Ht1621_BuzzerControl(uint8_t RunFlag){   (RunFlag == 0)?Ht1621_WriteCommand(TONE_OFF):Ht1621_WriteCommand(TONE_ON);}