STM32 HT1621驱动程序示例 - 使用GPIO库

目前没有找到HT1621在STM32上的官方例程。不过，您可以参考其他类似的驱动程序来编写自己的HT1621驱动程序。以下是一个简单的HT1621驱动程序（使用GPIO库）的示例:

#include "stm32f10x.h"
#include "stm32f10x_gpio.h"

#define HT1621_CS_PIN    GPIO_Pin_0
#define HT1621_WR_PIN    GPIO_Pin_1
#define HT1621_DATA_PIN  GPIO_Pin_2

void HT1621_Init(void)
{
    GPIO_InitTypeDef GPIO_InitStruct;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

    GPIO_InitStruct.GPIO_Pin = HT1621_CS_PIN | HT1621_WR_PIN | HT1621_DATA_PIN;
    GPIO_InitStruct.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA, &GPIO_InitStruct);

    GPIO_SetBits(GPIOA, HT1621_CS_PIN | HT1621_WR_PIN | HT1621_DATA_PIN);

    HT1621_SendCommand(0x30); // Config command
    HT1621_SendCommand(0x01); // Enable system oscillator
    HT1621_SendCommand(0x06); // Enable LCD bias
    HT1621_SendCommand(0x07); // Turn on LCD
}

void HT1621_SendCommand(uint8_t command)
{
    GPIO_ResetBits(GPIOA, HT1621_CS_PIN); // Select HT1621
    GPIO_ResetBits(GPIOA, HT1621_WR_PIN); // Set WR pin low

    for (uint8_t i = 0; i < 4; i++) {
        GPIO_WriteBit(GPIOA, HT1621_DATA_PIN, (command >> i) & 0x01); // Write data bit
        GPIO_SetBits(GPIOA, HT1621_WR_PIN); // Set WR pin high
        GPIO_ResetBits(GPIOA, HT1621_WR_PIN); // Set WR pin low
    }

    GPIO_SetBits(GPIOA, HT1621_CS_PIN); // Deselect HT1621
}

void HT1621_SendData(uint8_t address, uint8_t data)
{
    HT1621_SendCommand(0xA0 | address); // Send address command

    GPIO_ResetBits(GPIOA, HT1621_CS_PIN); // Select HT1621
    GPIO_ResetBits(GPIOA, HT1621_WR_PIN); // Set WR pin low

    for (uint8_t i = 0; i < 8; i++) {
        GPIO_WriteBit(GPIOA, HT1621_DATA_PIN, (data >> i) & 0x01); // Write data bit
        GPIO_SetBits(GPIOA, HT1621_WR_PIN); // Set WR pin high
        GPIO_ResetBits(GPIOA, HT1621_WR_PIN); // Set WR pin low
    }

    GPIO_SetBits(GPIOA, HT1621_CS_PIN); // Deselect HT1621
}

这里的代码使用了STM32的GPIO库来控制HT1621的CS、WR、DATA引脚。您可以根据自己的硬件配置和需求进行适当的更改。