ht1621b+stm32

HT1621B是一种驱动LCD的芯片，而STM32是一种微控制器。在使用HT1621B驱动LCD时，可以通过STM32来控制HT1621B芯片，从而实现LCD的显示。下面是一个简单的示例代码，演示如何使用STM32控制HT1621B芯片来显示数字"1234"。

#include "stm32f10x.h"

#define HT1621B_CS_HIGH() GPIO_SetBits(GPIOA, GPIO_Pin_1)
#define HT1621B_CS_LOW() GPIO_ResetBits(GPIOA, GPIO_Pin_1)
#define HT1621B_WR_HIGH() GPIO_SetBits(GPIOA, GPIO_Pin_2)
#define HT1621B_WR_LOW() GPIO_ResetBits(GPIOA, GPIO_Pin_2)
#define HT1621B_DATA_HIGH() GPIO_SetBits(GPIOA, GPIO_Pin_3)
#define HT1621B_DATA_LOW() GPIO_ResetBits(GPIOA, GPIO_Pin_3)

void HT1621B_Write_Command(uint8_t cmd)
{
    uint8_t i;
    HT1621B_CS_LOW();
    for(i=0; i<4; i++)
    {
        if(cmd & 0x08)
            HT1621B_DATA_HIGH();
        else
            HT1621B_DATA_LOW();
        cmd <<= 1;
        HT1621B_WR_LOW();
        HT1621B_WR_HIGH();
    }
    HT1621B_CS_HIGH();
}

void HT1621B_Write_Data(uint8_t addr, uint8_t data)
{
    uint8_t i;
    HT1621B_CS_LOW();
    HT1621B_Write_Command(0xa0 | addr);
    for(i=0; i<4; i++)
    {
        if(data & 0x80)
            HT1621B_DATA_HIGH();
        else
            HT1621B_DATA_LOW();
        data <<= 1;
        HT1621B_WR_LOW();
        HT1621B_WR_HIGH();
    }
    HT1621B_CS_HIGH();
}

void HT1621B_Init(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
    HT1621B_Write_Command(0x52);
    HT1621B_Write_Command(0x28);
    HT1621B_Write_Command(0x0c);
}

int main(void)
{
    HT1621B_Init();
    HT1621B_Write_Data(0, 0x06);
    HT1621B_Write_Data(1, 0x5b);
    HT1621B_Write_Data(2, 0x4f);
    HT1621B_Write_Data(3, 0x66);
    while(1);
}

在上面的代码中，我们首先定义了一些宏来方便操作HT1621B芯片。然后我们定义了两个函数，`HT1621B_Write_Command`和`HT1621B_Write_Data`，分别用于向HT1621B芯片发送命令和数据。最后我们在`main`函数中调用这两个函数来显示数字"1234"。在这个例子中，我们使用了STM32的GPIO来控制HT1621B芯片，通过向HT1621B芯片发送命令和数据来控制LCD的显示。