DR7808 配置笔记-526互联

CSA部分：

内部CSA可以配置为单向，或者双向，一共有两个CSA，内部CSA的GAIN可以配置，挡位有10，20，40，80四种增益选项。

也可以直接关闭内部CSA，CSA的过流保护值和过流保护滤波时间都可以单独设置。

相关头文件如下：

/*
    Analogysemi xutong
    2023/10/10
*/
#ifndef __DR7808_H
#define __DR7808_H
#include "bsp_lpspi.h"

/*
   DR7808 SPI每个帧是24bit数据组成
  
*/


#define DR7808_GENCTRL1 0x00
#define DR7808_GENCTRL2 0x01
#define DR7808_VDS1 0x02
#define DR7808_VDS2 0x03
#define DR7808_CCP_BLK1 0x04
#define DR7808_CCP_BLK2_ACT 0x05
#define DR7808_CCP_BLK2_FW 0x05
#define DR7808_HBMODE 0x06
#define DR7808_PWMSET 0x07
#define DR7808_TPRECHG 0x08
#define DR7808_HBIDIAG 0x09
#define DR7808_ST_ICHG 0x0A
#define DR7808_PWM_PCHG_INIT 0x0A
#define DR7808_PWM_ICHG_ACT 0x0B
#define DR7808_PWM_ICHG_FW 0x0B
#define DR7808_PWM_IDCHG_ACT 0x0C
#define DR7808_PWM_PDCHG_INIT 0x0C
#define DR7808_PWM_ICHGMAX_CCP_BLK3_ACT 0x0D
#define DR7808_PWM_ICHGMAX_CCP_BLK3_FW 0x0D
#define DR7808_TDON_OFF1 0x0E
#define DR7808_TDON_OFF2 0x0F
#define DR7808_TDON_OFF3 0x10
#define DR7808_GENSTAT 0x11
#define DR7808_DSOV 0x12
#define DR7808_HBVOUT_PWMERR 0x13
#define DR7808_EFF_TDON_OFF1 0x14
#define DR7808_EFF_TDON_OFF2 0x15
#define DR7808_EFF_TDON_OFF3 0x16
#define DR7808_TRISE_FALL1 0x17
#define DR7808_TRISE_FALL2 0x18
#define DR7808_TRISE_FALL3 0x19
#define DR7808_DEVID 0x1F
#define DR7808_DRV_LPWR_EN 0x1C
#define DR7808_CSA_OC_SH 0x1D
#define DR7808_MISC 0x1E

#define DR7808_GENSTAT 0x11
#define DR7808_DSOV 0x12
#define DR7808_HBVOUT_PWMERR 0x13
#define DR7808_EFF_TDON_OFF1 0x14
#define DR7808_EFF_TDON_OFF2 0x15
#define DR7808_EFF_TDON_OFF3 0x16
#define DR7808_TRISE_FALL 0x17
#define DR7808_TRISE_FALL2 0x18
#define DR7808_TRISE_FALL3 0x19
#define DR7808_GDF 0x1A
#define DR7808_DEVID 0x1F





//注意 DR7808 不同寄存器有不同Bank
//Note DR7808 has different banks for different registers


// DR7808 half bridge config
// DR7808 半桥配置
enum DR7808_HB_Mode{HighImpedance=0,LSn_ON=1,HSn_ON=2};
typedef struct{
  uint8_t HB8_Mode;
  uint8_t HB7_Mode;
  uint8_t HB6_Mode;  
  uint8_t HB5_Mode;  
  uint8_t HB4_Mode;
  uint8_t HB3_Mode;
  uint8_t HB2_Mode;
  uint8_t HB1_Mode;
}HBMODE_InitTypeDef;

// DR7808 PWM Setting
// DR7808 PWM 设置
enum DR7808_PWM_HB{HB1=0,HB2=1,HB3=2,HB4=3,HB5=4,HB6=5,HB7=6,HB8=7};
typedef struct{
  uint8_t PWM1_HB;
  uint8_t PWM2_HB;
  uint8_t PWM3_HB;  
  uint8_t PWM1_EN;  
  uint8_t PWM2_EN;
  uint8_t PWM3_EN;
//Drain-Source monitoring in bridge passive mode
//漏源监控在桥被动模式
  uint8_t PASS_VDS;
//Settings for bridge driver passive mode
//00B: LS1-4 are always off.
//Note: Changing PASS_MOD from
//00B: to any other value requires to clear DSOV1) first before writing PASS_MOD,
//01B: LS1-4 are always on (static brake).
//10B: LS1-4 are activated if passive VM OV is detected (overvoltage brake) (default).
//11B: LS1-4 are activated if passive VM OV is detected and PWM1 = High (overvoltage brake conditioned by PWM1).
  uint8_t PASS_Mode;
}PWMSET_InitTypeDef;

// half bridge Vds threshold Setting
// 半桥Vds阈值设定
/*
    000B: 0.15V
    001B: 0.20V (default)
    010B: 0.25V
    011B: 0.30V
    100B: 0.40V
    101B: 0.50V
    110B: 0.60V
    111B: 2.0V
*/
enum DR7808_HB_VDSTh{Vdsth_15=0,Vdsth_20=1,Vdsth_25=2,Vdsth_30=2,
Vdsth_40=2,Vdsth_50=2,Vdsth_60=2,Vdsth2_0=2};
typedef struct{
  uint8_t HB8_VDSTh;
  uint8_t HB7_VDSTh;
  uint8_t HB6_VDSTh;  
  uint8_t HB5_VDSTh;  
  uint8_t HB4_VDSTh;
  uint8_t HB3_VDSTh;
  uint8_t HB2_VDSTh;
  uint8_t HB1_VDSTh;
}VDS_Vth_InitTypeDef;
// CSA 相关配置
enum DR7808_CSA_Config{Gain10=0,Gain20=1,Gain40=2,Gain80=3,
CSA_Unidirectional=0,CSA_Bidirectional=1,OCThLevel1=0,OCThLevel2=1,
OCThLevel3=2,OCThLevel4=3};
typedef struct{
  //配置CSA方向 CSA_Bidirectional 或者 CSA_Unidirectional
  //配置双向或者单向
  uint8_t CSA1_Direction;
  uint8_t CSA2_Direction;
  // 配置 CSA Gain的大小 10,20,40,80
  uint8_t CSA1_Gain;  
  uint8_t CSA2_Gain;  
  // 配置OCP是否开启
  uint8_t OverCurrentProtect;
  //配置CSA 在高边或者底边
  //Configure CSA on the high-side or the low-side
  uint8_t CSA1_Level;
  uint8_t CSA2_Level;
  //配置过流滤波时间
  //Overcurrent filter time
  uint8_t OC1FILT;
  uint8_t OC2FILT;
  //关闭CSA
  //Disenable CSA
  uint8_t CSA1_OFF;
  uint8_t CSA2_OFF;
  // Overcurrent detection threshold 
  // 过流检测阈值设置
  uint8_t OCTH1;
  uint8_t OCTH2;
//  Overcurrent detection threshold of SO1 with CSD1 = 0
//00B: VSO1 > VDD / 2 (default)
//01B: VSO1 > VDD / 2 + VDD / 10
//10B: VSO1 > VDD / 2 + 2 x VDD / 10
//11B: VSO1 > VDD / 2 + 3x VDD / 10
//Overcurrent detection threshold of SO1 with CSD1 = 1
//00B: VSO1 > VDD / 2+2 x VDD / 20 or VCSOx < VDD / 2 – 2 × VDD / 20 (default)
//01B: VSO1 > VDD / 2+ 4x VDD / 20 or VCSOx < VDD / 2 – 4 × VDD / 20
//10B: VSO1 > VDD / 2+ 5 x VDD / 20 or VCSOx < VDD / 2 ? 5 × VDD / 20
//11B: VSO1 > VDD / 2+ 6x VDD / 20 or VCSOx < VDD / 2 – 6 × VDD / 20
  
}CSA_InitTypeDef;


// 获取寄存器信息
void DR7808_Read_Reg(uint8_t Reg,uint8_t *RData);
// 读取并且清除寄存器
void DR7808_Read_Clear_Reg(uint8_t Reg,uint8_t *RData);
// 写入寄存器信息
void DR7808_Write_Reg(uint8_t Reg,uint16_t WData,uint8_t *RData);
// 退出FS Mode
void DR7808_Quit_FS(void);
// 禁用看门狗
void DR7808_Dis_WD(void);
// DR7808 延时 
void DR7808_delay(uint32_t count);
// 桥壁设置
void DR7808_Half_Bridge_Mode(HBMODE_InitTypeDef* config,uint8_t *RData);
// PWM设置通道和DS监控被动模式配置
void DR7808_PWMSET_Channel(PWMSET_InitTypeDef* config,uint8_t *RData);
// HB VDS 监控阈值设定
// HB VDS monitoring threshold Setting
// 设置 VDS1 和 VDS2 寄存器
void DR7808_VDS_Monitoring(VDS_Vth_InitTypeDef* config,uint8_t *RData);
// 内部CSA配置
void DR7808_CSA_Conifg(CSA_InitTypeDef* config,uint8_t *RData);
// DR7808 喂狗
void DR7808_Feed_Dog(uint8_t *RData);
// 获取DR7808 ID
uint8_t DR7808_GetChipID(void);


#endif

#include "DR7808.h"


void DR7808_delay(uint32_t count)
{ 
    volatile uint32_t i = 0;
    for (i = 0; i < count; ++i)
    {
        __asm("NOP"); /* 调用nop空指令 */
         __asm("NOP"); /* 调用nop空指令 */
          __asm("NOP"); /* 调用nop空指令 */
           __asm("NOP"); /* 调用nop空指令 */
            __asm("NOP"); /* 调用nop空指令 */
    }
}
//获取寄存器信息
void DR7808_Read_Reg(uint8_t Reg,uint8_t *RData)
{
  uint8_t TxData[3]={0X00,0X00,0X00};
  //读取寄存器
  TxData[0]=(Reg<<1)|0xC0;
  Lpspi_Read(3,TxData,RData);
}
//读取与清除寄存器信息
void DR7808_Read_Clear_Reg(uint8_t Reg,uint8_t *RData)
{
  uint8_t TxData[3]={0X00,0X00,0X00};
  //读取寄存器
  TxData[0]=(Reg<<1)|0xC1;
  Lpspi_Read(3,TxData,RData);
}
//写寄存器信息
void DR7808_Write_Reg(uint8_t Reg,uint16_t WData,uint8_t *RData)
{
  uint8_t TxData[3]={0X00,0X00,0X00};
  //读取寄存器&写入寄存器
  TxData[0]=(Reg<<1)|0xC1;
  TxData[1]=WData>>8;
  TxData[2]=WData&0x00FF;
  Lpspi_Read(3,TxData,RData);
}
// dr7808 退出FS Mode
void DR7808_Quit_FS(void)
{
  uint8_t Data[3]={0X00,0X00,0X00};
  //读取并且清除Gensata
  DR7808_Read_Clear_Reg(DR7808_GENSTAT,Data);
  DR7808_delay(2000);
  //看门狗位置1
  DR7808_Write_Reg(DR7808_GENCTRL1,0x0027,Data);
  DR7808_delay(2000);
  //看门狗位置0
  DR7808_Write_Reg(DR7808_GENCTRL1,0x0000,Data);
  DR7808_delay(2000);
}
// dr7808 禁用看门狗
void DR7808_Dis_WD(void)
{
  uint8_t Data[3];
  DR7808_delay(2000);
  //看门狗Unlock 置1
  DR7808_Write_Reg(DR7808_GENCTRL1,0x00A7,Data);
  DR7808_delay(2000);
  //禁用看门狗
  DR7808_Write_Reg(DR7808_GENCTRL2,0x4380,Data);
}
// dr7808桥壁配置
void DR7808_Half_Bridge_Mode(HBMODE_InitTypeDef* config,uint8_t *RData)
{
  uint16_t WData=0;
  WData|=(config->HB8_Mode)<<14;
  WData|=(config->HB7_Mode)<<12;
  WData|=(config->HB6_Mode)<<10;
  WData|=(config->HB5_Mode)<<8;
  WData|=(config->HB4_Mode)<<6;
  WData|=(config->HB3_Mode)<<4;
  WData|=(config->HB2_Mode)<<2;
  WData|=(config->HB1_Mode);
  DR7808_Write_Reg(DR7808_HBMODE,WData,RData);
}
// 未测试
// dr7808 PWM 通道配置
void DR7808_PWMSET_Channel(PWMSET_InitTypeDef* config,uint8_t *RData)
{
  uint16_t WData=0;
  WData|=(config->PWM1_HB)<<1;
  WData|=(config->PWM2_HB)<<5;
  WData|=(config->PWM3_HB)<<9;
  WData|=(config->PWM1_EN);
  WData|=(config->PWM2_EN)<<4;
  WData|=(config->PWM3_EN)<<8;
  WData|=(config->PASS_VDS)<<14;
  WData|=(config->PASS_Mode)<<12;
  DR7808_Write_Reg(DR7808_PWMSET,WData,RData);
}
//未测试
//VDS Monitor threshold setting HB1~HB4
void DR7808_VDS_Monitoring_1_4(VDS_Vth_InitTypeDef* config,uint8_t *RData)
{
  uint16_t WData=0;
  WData|=(config->HB1_VDSTh);
  WData|=(config->HB2_VDSTh)<<3;
  WData|=(config->HB3_VDSTh)<<6;
  WData|=(config->HB4_VDSTh)<<9;
  DR7808_Write_Reg(DR7808_VDS1,WData,RData);
}
//未测试
//VDS Monitor threshold setting HB5~HB8
void DR7808_VDS_Monitoring_5_8(VDS_Vth_InitTypeDef* config,uint8_t *RData)
{
  uint16_t WData=0;
  WData|=(config->HB5_VDSTh);
  WData|=(config->HB6_VDSTh)<<3;
  WData|=(config->HB7_VDSTh)<<6;
  WData|=(config->HB8_VDSTh)<<9;
  DR7808_Write_Reg(DR7808_VDS2,WData,RData);
}
// dr7808喂狗操作
void DR7808_Feed_Dog(uint8_t *RData)
{
  uint16_t WData=0;
  uint8_t Data[3];
  //读取看门狗位
  DR7808_Read_Reg(DR7808_GENCTRL1,Data);
  DR7808_delay(20);
  //如果看门狗位为1
  if((Data[2]&0x01)==1)
  {
    //看门狗位置0并写入
    Data[2]&=0XFE;
    WData|=Data[1]<<8;
    WData|=Data[2];
    DR7808_Write_Reg(DR7808_GENCTRL1,WData,RData);
  }
  else
  {
    //看门狗位置1并写入
    Data[2]|=0X01;
    WData|=Data[1]<<8;
    WData|=Data[2];
    DR7808_Write_Reg(DR7808_GENCTRL1,WData,RData);
  }
}
// dr7808 csa相关配置
void DR7808_CSA_Conifg(CSA_InitTypeDef* config,uint8_t *RData)
{
  uint16_t WData=0;
  uint8_t Data[3];
  //读取GENCTRL1配置
  DR7808_Read_Reg(DR7808_GENCTRL1,Data);
  WData|=(config->CSA2_Direction)<<15;
  WData|=(config->CSA2_Gain)<<13;
  WData|=(config->CSA1_Direction)<<12;
  WData|=(config->CSA1_Gain)<<10;
  //接收值后十位不变
  WData|=(Data[1]&0x03)<<8;
  WData|=Data[2];
  DR7808_Write_Reg(DR7808_GENCTRL1,WData,RData);
  //清空WData
  WData=0;
  DR7808_delay(20);
  DR7808_Read_Reg(DR7808_HBIDIAG,Data);
  WData|=Data[2];
  WData|=(config->CSA2_Level)<<15;
  WData|=(config->CSA1_Level)<<14;
  WData|=(config->OC2FILT)<<12;
  WData|=(config->OC1FILT)<<10;
  WData|=(config->CSA2_OFF)<<9;
  WData|=(config->CSA1_OFF)<<8;
  DR7808_Write_Reg(DR7808_HBIDIAG,WData,RData);
    //清空WData
  WData=0;
  DR7808_delay(20);
   //读取GENCTRL2配置
  DR7808_Read_Reg(DR7808_GENCTRL2,Data);
  //清空后四位
  Data[2]&=0XF0;
  //高8位不变
  WData|=Data[1]<<8;
  WData|=Data[2];
  WData|=(config->OCTH2)<<2;
  WData|=(config->OCTH1);
  
}
// dr7808 ID获取
uint8_t DR7808_GetChipID(void)
{
  uint8_t Data[3];
  DR7808_Read_Reg(DR7808_DEVID,Data);
  return Data[2];
}

DR7808退出Fail Safe：

// dr7808 退出FS Mode 经过验证
void DR7808_Quit_FS(void)
{
  uint8_t Data[3]={0X00,0X00,0X00};
  //读取并且清除Gensata
  DR7808_Read_Clear_Reg(DR7808_GENSTAT,Data);
  DR7808_delay(2000);
  //看门狗位置1
  DR7808_Write_Reg(DR7808_GENCTRL1,0x0027,Data);
  DR7808_delay(2000);
  //看门狗位置0
  DR7808_Write_Reg(DR7808_GENCTRL1,0x0000,Data);
  DR7808_delay(2000);
}

DR7808关闭看门狗：

// dr7808 禁用看门狗 经过验证
void DR7808_Dis_WD(void)
{
  uint8_t Data[3];
  DR7808_delay(2000);
  //看门狗Unlock 置1
  DR7808_Write_Reg(DR7808_GENCTRL1,0x00A7,Data);
  DR7808_delay(2000);
  //禁用看门狗
  DR7808_Write_Reg(DR7808_GENCTRL2,0x4380,Data);
}

　　需要注意的是，在故障安全模式下，控制寄存器被冻结为其默认值，WDTRIG、PASS_VDS、PASS_MOD、CSA1L、CSA2L除外。在此模式下，任何写命令（WDTRIG 位除外）或清除命令（GENSTAT除外）都将被丢弃并设置SPIE位（全局状态字节）。
在故障安全模式下对GENSTAT的清除命令不会重置该状态寄存器报告的任何故障标志。在退出序列开始之前，可以在此模式下读取控制和状态寄存器，而不会设置SPIE位。通常Fail Safe和关闭看门狗可以一起使用

　　注意：以上有些代码未经过验证