段码屏驱动芯片ht16c22驱动程序.zip

#include "bsp_ht16c22.h" static u8 HT16C22_Address=0x7e; //器件地址 static u32 TimeOut=0; //超时计时 static void HT16C22_GPIO_Config(void); void HT16C22_Init(void) { u8 ReadStr[2]; I2C_InitTypeDef I2C_InitStructure; HT16C22_GPIO_Config(); UserDelay(50000); //等待芯片稳定 UserDelay(50); HT16C22_WriteCmd(0x82,0x0f); //1/16 duty UserDelay(50); HT16C22_WriteCmd(0x86,0x01); //80HZ UserDelay(50); HT16C22_WriteCmd(0x8a,0x00); //内部电压调整关闭 UserDelay(50); HT16C22_WriteCmd(0x88,0x00); //关闭闪烁 UserDelay(50); HT16C22_WriteCmd(0x84,0x03); //打开显示 UserDelay(50); } /* 初始化HT16C22引脚 */ static void HT16C22_GPIO_Config(void) { GPIO_InitTypeDef GPIO_InitStructure; /* sEE_I2C_SCL_GPIO_CLK and sEE_I2C_SDA_GPIO_CLK Periph clock enable */ RCC_APB2PeriphClockCmd(HT16C22_I2C_SCL_GPIO_CLK | HT16C22_I2C_SDA_GPIO_CLK|LCD_BL_CLK, ENABLE); /* sEE_I2C Periph clock enable */ RCC_APB1PeriphClockCmd(HT16C22_I2C_CLK, ENABLE); /* GPIO configuration */ /* Configure sEE_I2C pins: SCL */ GPIO_InitStructure.GPIO_Pin = HT16C22_I2C_SCL_PIN; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD; // 开漏输出 GPIO_Init(HT16C22_I2C_SCL_GPIO_PORT, &GPIO_InitStructure); /* Configure sEE_I2C pins: SDA */ GPIO_InitStructure.GPIO_Pin = HT16C22_I2C_SDA_PIN; GPIO_Init(HT16C22_I2C_SDA_GPIO_PORT, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = LCD_BL_PIN; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP; // GPIO_InitStruct.Alternate = GPIO_AF1_I2C1; GPIO_Init(LCD_BL_PORT, &GPIO_InitStructure); //背光 OPEN_LCD_BL; } static void HT16C22_IIC_Start(void) { HT16C22_SDA_H(); HT16C22_SCL_H(); UserDelay(5); HT16C22_SDA_L(); UserDelay(5); HT16C22_SDA_L(); UserDelay(5); } static void HT16C22_IIC_Stop(void) { HT16C22_SCL_L(); //1 UserDelay(5); // 2 HT16C22_SDA_L(); // 3. 1,2,3??????? UserDelay(5); HT16C22_SCL_H(); UserDelay(5); HT16C22_SDA_H(); UserDelay(5); } static void HT16C22_IIC_WaitAck(void) { u16 k; HT16C22_SCL_L(); HT16C22_SDA_H(); UserDelay(5); HT16C22_SCL_H(); k = 0; while((Read_HT16C22_SDA()!= 0) /*&& (k < 60000)*/)k++; UserDelay(5); HT16C22_SCL_L(); UserDelay(5); } static void HT16C22_IIC_WriteByte(u8 byte) { u8 i = 0; for(i = 0; i < 8; i++) { HT16C22_SCL_L(); UserDelay(5); if(byte & 0x80) { HT16C22_SDA_H(); } else { HT16C22_SDA_L(); } UserDelay(5); HT16C22_SCL_H(); UserDelay(5); byte<<=1; } HT16C22_SCL_L(); UserDelay(5); } static u8 HT16C22_IIC_ReadByte(void) { u8 i,ReadByte; HT16C22_SDA_H(); for(i = 0; i < 8; i++) { ReadByte <<= 1; HT16C22_SCL_L(); UserDelay(5); HT16C22_SCL_H(); UserDelay(5); if(Read_HT16C22_SDA()) { ReadByte |= 0x01; } else { ReadByte &= ~(0x01); } } return ReadByte; } static void HT16C22_I2C_Ack(void) { HT16C22_SCL_L(); UserDelay(5); HT16C22_SDA_L(); UserDelay(5); HT16C22_SCL_H(); UserDelay(5); HT16C22_SCL_L(); UserDelay(5); } static void HT16C22_I2C_NoAck(void) { HT16C22_SCL_L(); UserDelay(5); HT16C22_SDA_H(); UserDelay(5); HT16C22_SCL_H(); UserDelay(5); HT16C22_SCL_L(); UserDelay(1); } /* 发送命令指令 */ u8 HT16C22_WriteCmd(u8 Cmd,u8 CmdSet) { HT16C22_IIC_Start(); HT16C22_IIC_WriteByte(0x7a); HT16C22_IIC_WaitAck(); HT16C22_IIC_WriteByte(Cmd); HT16C22_IIC_WaitAck(); HT16C22_IIC_WriteByte(CmdSet); HT16C22_IIC_WaitAck(); HT16C22_IIC_Stop(); } u8 HT16C22_WriteRom(u8* pBuffer,u8 RomAdd,u8 NumByteToWrite) { u8 i; HT16C22_IIC_Start(); HT16C22_IIC_WriteByte(0x7a); HT16C22_IIC_WaitAck(); HT16C22_IIC_WriteByte(0x80); HT16C22_IIC_WaitAck(); HT16C22_IIC_WriteByte(RomAdd); HT16C22_IIC_WaitAck(); for(i=0; i<NumByteToWrite; i++) { HT16C22_IIC_WriteByte(pBuffer[i]); HT16C22_IIC_WaitAck(); HT16C22_IIC_WriteByte(pBuffer[i]); HT16C22_IIC_WaitAck(); } HT16C22_IIC_Stop(); } /* 读取数据 */ u8 HT16C22_ReadRom(u8* pBuffer,u8 RomAdd,u8 NumByteToWrite) { u8 i; HT16C22_IIC_Start(); HT16C22_IIC_WriteByte(0x7a); HT16C22_IIC_WaitAck(); HT16C22_IIC_WriteByte(0x80); HT16C22_IIC_WaitAck(); HT16C22_IIC_WriteByte(RomAdd); HT16C22_IIC_WaitAck(); HT16C22_IIC_Stop(); HT16C22_IIC_Start(); HT16C22_IIC_WriteByte(0x7b); HT16C22_IIC_WaitAck(); for(i=0; i<NumByteToWrite; i++) { pBuffer[i]=HT16C22_IIC_ReadByte(); if(i==(NumByteToWrite-1)) HT16C22_I2C_NoAck(); else HT16C22_I2C_Ack(); } HT16C22_IIC_Stop(); }