---

1.读MPS5023芯片：0x03ff即将前6位屏蔽

# Read_FPGA_Power.sh  
#!/bin/bash
stop_ipmistack()
{cnt=0while truedo/etc/init.d/ipmistack stop >/dev/null  2>&1s1=$(ps aux)s2="/usr/local/bin/IPMIMain"result=$(echo $s1 | grep "${s2}")if [[ "$result" == "" ]]thenbreakfiif [ $cnt -eq 5 ]thenecho "Unable to stop ipmistack !"exit 1ficnt=$(($cnt+1))sleep 10done
}delete()
{cnt=0while truedoecho 0x73 > /sys/bus/i2c/devices/i2c-7/delete_device #将bus7上0x73这设备删除if [ $? = 0 ]thenbreakfiif [ $cnt -eq 5 ]thenecho "Unable to delete device  !"exit 1ficnt=$(($cnt+1))done
}access()
{cnt=0while truedoi2c-test -b 7 -s 0x73 -w -d 0x08 >/dev/null 2>&1if [ $? = 0 ]thenbreakfiif [ $cnt -eq 5 ]thenecho $cntecho "Unable to access 9545 !"exit 1ficnt=$(($cnt+1))echo $cntdone
}OpenChannel()
{cnt=0while truedoi2c-test -b 7 -s 0x71 -w -d 0x80 >/dev/null 2>&1   #0x80打开channel8if [ $? = 0 ]thenbreakfiif [ $cnt -eq 5 ]thenecho "Unable to access 9548 channel8 !"exit 1ficnt=$(($cnt+1))done
}read_voltage(){cnt=0while truedoval_v=$(i2c-test -b 7 -s 0x40 -m 1 -rc 2 -d 0x8b)if [ $? = 0 ]thenhexval_v_h=${val_v:14:2}hexval_v_l=${val_v:17:2}hexval_v=${hexval_v_l}${hexval_v_h}#echo $hexval_v  #0183dec_v=$((0x$hexval_v & 0x3ff))  #&：有0为0，3ff:10个1, hex->dec#echo $dec_v  #388dec_v_wv=$((dec_v*3125))  #31.25mV/LSBdec_v_v=$((dec_v_wv/100000))#echo $dec_v_v   #12breakfiif [ $cnt -eq 5 ]thenecho "Unable to read voltage !"exit 1ficnt=$(($cnt+1))done
}read_power(){cnt=0while truedoval_a=$(i2c-test -b 7 -s 0x40 -m 1 -rc 2 -d 0x8c) #电流if [ $? = 0 ]thenhexval_a_h=${val_a:14:2}hexval_a_l=${val_a:17:2}hexval_a=${hexval_a_l}${hexval_a_h}#echo $hexval_a  #0054dec_a=$((0x$hexval_a & 0x3ff))dec_a_wa=$((dec_a*6250))dec_a_a=$((dec_a_wa/100000))#echo $dec_a_apower=$(($dec_v_v * $dec_a_a))echo "FPGA Power : "$power"W"breakfiif [ $cnt -eq 5 ]thenecho "Unable to read electricity !"exit 1ficnt=$(($cnt+1))done
}start_ipmistack()
{cnt=0while truedo/etc/init.d/ipmistack start >/dev/null 2>&1s1=$(ps aux)s2="/usr/local/bin/IPMIMain"result=$(echo $s1 | grep "${s2}")if [[ "$result" != "" ]]thenbreakfiif [ $cnt -eq 5 ]thenecho "Unable to start ipmistack !"exit 1ficnt=$(($cnt+1))sleep 10done
}start_ipmistack
stop_ipmistack
delete
access
OpenChannel
read_voltage
read_power
start_ipmistack

2.读PXE1410CDM电压和电流：一个数&0x7ff，将这个数前5位全变为0，其余位不变

ipmitool raw 0x3a 0x10 <bus id> <slave addr> <Read count> <Data to write> （00：第一个状态码不显示）

status , log_psu1 = run_command("sudo bash -c 'a=$(ipmitool raw 0x3a 0x10 14 0xb0 2 0x88) ; b=${a:1:2} ; c=${a:4:5} ; d=${c}${b} ; \f=`../utility/diag-tools/pmbus_tool/line11 0x$d` ; echo $f'")  #psu1输入电压； 输出电压0x8b，line16
status , log_psu2 = run_command("sudo bash -c 'a=$(ipmitool raw 0x3a 0x10 15 0xb0 2 0x88) ; b=${a:1:2} ; c=${a:4:5} ; d=${c}${b} ; \f=`../utility/diag-tools/pmbus_tool/line11 0x$d` ; echo $f'")  #psu2输入电压； 输出电压0x8b，line16

输入电压（mv）：
root@gnr5713bb:/var/log/abak# i2cget -f -y 15 0x60 0x88 w
0xe9b6
root@gnr5713bb:/var/log/abak# i2cget -f -y 15 0x61 0x88 w
0xe9b5
root@gnr5713bb:/var/log/abak# i2cget -f -y 15 0x62 0x88 w
0xe9b6
root@gnr5713bb:/var/log/abak# ./line11_arm 0xe9b6
54750输出电压（mv）：
root@gnr5713bb:/var/log/abak# i2cget -f -y 15 0x60 0x8b w
0xc2ad
root@gnr5713bb:/var/log/abak# i2cget -f -y 15 0x61 0x8b w
0xc395
root@gnr5713bb:/var/log/abak# i2cget -f -y 15 0x62 0x8b w
0xc0f8【VOUT_MODE】：
root@gnr5713bb:/var/log/abak# i2cget -f -y 15 0x60 0x20
0x14
root@gnr5713bb:/var/log/abak# i2cget -f -y 15 0x61 0x20
0x14
root@gnr5713bb:/var/log/abak# i2cget -f -y 15 0x62 0x20
0x14【输出电压（mv）】：
root@gnr5713bb:/var/log/abak# ./line16_arm 0xc2ad 0x14
12167
root@gnr5713bb:/var/log/abak# ./line16_arm 0xc395 0x14
12223
root@gnr5713bb:/var/log/abak# ./line16_arm 0xc0f8 0x14
12060

2.1 1ine11：先看第15和10位，e9b6是上面读出的值

如下计算机以补码形式存放负数，0010+1=0011（十进制3）。

438乘2的-3次方 = 54.8（V）。

// arm编译器arm-linux-gcc （不是x86的gcc）编译成linear11
#include <stdio.h>
#include <stdlib.h>int main(int argc, char ** argv)
{short exponent;int mantissa;int val_x;mantissa = ((signed short)((strtoul(argv[1],0,0) & 0x7ff) << 5)) >> 5;// printf("%x\n",mantissa);exponent = ((signed short)strtoul(argv[1],0,0))>>11;// printf("%d\n",exponent);val_x = mantissa * 1000L;  //v转为mvif (exponent >= 0)val_x <<= exponent;  // 左移：* 2的exponent次方elseval_x >>= -exponent; // 右移：/ 2的exponent（正）次方  即 * 2的 - exponent（正）次方printf("%d\n",val_x);return 0;
}

2.2 1ine16：PMBUS协议16bit

0x20读出0x14：0x14取反加1就是-12

如下十六进制HEX为c2ad（上面读出的值） ，49837乘2的-12次方 = 12.1（A）。

0x20读出0x17：0x17取反加1后，十进制和十六进制都为9

// linear16
#include <stdio.h>
#include <stdlib.h>int main(int argc, char ** argv)
{short exponent;int mantissa;int val_x;mantissa = (signed short)strtoul(argv[1],0,0);exponent = ((signed short)(0x17 << 11)) >> 11 ;val_x = mantissa * 1000L;if (exponent >= 0)val_x <<= exponent;elseval_x >>= -exponent;printf("%d\n",val_x);return 0;
}

linear16_convert()
{mantissa=$(printf %d "$1") # 有符号，也需像linear11_convert一样判断if [ $((($2 >> 4) & 0x1)) == 1 ] ; thenexponent=$(((((($2 << 11)) >> 11)) & 0xf))exponent=$(($exponent ^ 0xf))exponent=$((~$exponent))elseexponent=$(printf %d "$2")fival_x=$((mantissa * 1000))if [ $exponent -ge 0 ]; thenval_x=$(($val_x<<$exponent))elseval_x=$(($val_x>>$((-$exponent))))fiecho $val_x
}

# Read_PXE1410CDM_0X62_Voltage_Current.sh
#!/bin/bashwrite_ch0()
{cnt=0while truedoi2c-test -b 7 -s 0x60 -w -d 0x0 0x00 >/dev/null 2>&1if [ $? = 0 ]thenbreakfiif [ $cnt -eq 5 ]thenecho "Unable to write PXE CH0!"exit 1ficnt=$(($cnt+1))done
}read_ch0_voltage(){cnt=0while truedoval_v_0=$(i2c-test -b 7 -s 0x60 -m 1 -rc 2 -d 0x8b)if [ $? = 0 ]thenhex_v_h_0=${val_v_0:14:2}hex_v_l_0=${val_v_0:17:2}hex_v_0=${hex_v_l_0}${hex_v_h_0}dec_v_0=$((0x$hex_v_0 & 0xff))#echo $dec_v_0dec_v_0=$(((500 + (dec_v_0 - 1) * 10)/2))echo  "PXE_0x60_0_P0V9_VCCH Voltage : "$dec_v_0"mV"breakfiif [ $cnt -eq 5 ]thenecho "Unable to read ch0 voltage !"exit 1ficnt=$(($cnt+1))done
}read_ch0_current(){cnt=0while truedoval_a_0=$(i2c-test -b 7 -s 0x60 -m 1 -rc 2 -d 0x8c)if [ $? = 0 ]thenhex_a_h_0=${val_a_0:14:2}hex_a_l_0=${val_a_0:17:2}hex_a_0=${hex_a_l_0}${hex_a_h_0}dec_a_0=$(./linear11 0x$hex_a_0)echo  "PXE_0x60_0 Current : "$dec_a_0"mA"breakfiif [ $cnt -eq 5 ]thenecho "Unable to read ch0 current !"exit 1ficnt=$(($cnt+1))done
}
start_ipmistack
stop_ipmistack
delete
access
OpenChannel
write_ch0
read_ch0_voltage
read_ch0_current
write_ch1
read_ch1_voltage
read_ch1_current
start_ipmistack

3. xdpe12284c读电压：https://elixir.bootlin.com/linux/v5.19/source/drivers/hwmon/pmbus/pmbus_core.c#L699，ratio

// linux-aspeed/drivers/hwmon/pmbus/xdpe12284.c
static int xdpe122_identify(struct i2c_client *client,struct pmbus_driver_info *info)
{u8 vout_params;int i, ret;for (i = 0; i < XDPE122_PAGE_NUM; i++) {/* Read the register with VOUT scaling value.*/ret = pmbus_read_byte_data(client, i, PMBUS_VOUT_MODE); // PMBUS_VOUT_MODE=0x20 , ret=0x21(page01) , ret=0x23(page00默认)if (ret < 0)return ret;vout_params = ret & GENMASK(4, 0);  // 0010 0011  &  0001 1111 = 0000 0011 (0x03)switch (vout_params) {case XDPE122_PROT_VR12_5_10MV:  // 0x02info->vrm_version[i] = vr13;break;case XDPE122_PROT_VR12_5MV:  // 0x01info->vrm_version[i] = vr12;break;case XDPE122_PROT_IMVP9_10MV:  // 0x03 //info->vrm_version[i] = imvp9;break;case XDPE122_AMD_625MV:  // 0x10info->vrm_version[i] = amd625mv;break;default:return -EINVAL;}}return 0;
}

// linux-aspeed/drivers/hwmon/pmbus/pmbus_core.c
static long pmbus_reg2data_vid(struct pmbus_data *data,struct pmbus_sensor *sensor)
{long val = sensor->data;long rv = 0;switch (data->info->vrm_version[sensor->page]) {case vr11:if (val >= 0x02 && val <= 0xb2)rv = DIV_ROUND_CLOSEST(160000 - (val - 2) * 625, 100);break;case vr12:if (val >= 0x01)rv = 250 + (val - 1) * 5;break;case vr13:if (val >= 0x01)rv = 500 + (val - 1) * 10;break;case imvp9:if (val >= 0x01)rv = 200 + (val - 1) * 10;  // val就是0x8b读出的值，10就是10mv步进break;case amd625mv:if (val >= 0x0 && val <= 0xd8)rv = DIV_ROUND_CLOSEST(155000 - val * 625, 100);break;}return rv;
}

4.xdpe132g5c调压：

如下在switch芯片手册中，查找到AVS值需要经过intel VR11.1协议进行转换。

如下在intel VRM11.1协议说明手册中通过Vcc_Max一列看出步长为6.25mv。Hex一列代表switch芯片传入basecpld的初始值，Hex为00的Vcc_Max的值为1.6+0.00625*2=1.6125（V），通过i2cget -f -y 0 0x0d 0x10从basecpld的10寄存器读取switch芯片传入的初始值为0x7a，所以Hex为7a的Vcc_Max值 = 1.6125 -（0.00625*122）= 0.85（V），所以0.85V为最终的XDPE132g芯片的调压显示结果值。

但是XDPE132g芯片内部有调压逻辑如下，所以不能将0.85直接设置进XDPE132g芯片寄存器中，厂商邮件如下：

通过i2cget -f -y 29 0x40 0x20命令读出XDPE132g芯片的20寄存器为0x14对应如上0.244mv step，上图第三步1000 (mv) / 1.953 = 512即0x0200（相当于3484），所以850 (mv) / 0.244 = 3484，将3484设置进21寄存器（需要先切换page），再通过8b寄存器读出对比设置进21寄存器的值是否一致。

关闭dcdc监控后，可以看出XDPE132g芯片的8b和21寄存器的值是一样的。

// cat /sys/bus/i2c/devices/i2c-29/29-0040/hwmon/hwmon20/in2_input节点后
// linux-aspeed/drivers/hwmon/pmbus/pmbus_core.c
static ssize_t pmbus_show_sensor(struct device *dev,struct device_attribute *devattr, char *buf)
{struct pmbus_data *data = pmbus_update_device(dev);struct pmbus_sensor *sensor = to_pmbus_sensor(devattr);if (sensor->data < 0)return sensor->data;if (sensor->data == 0xffff)return 0;printk(KERN_INFO "pmbus_show_sensor, %d, %d\n", sensor->data, pmbus_reg2data(data, sensor)); /// 3282, 801return snprintf(buf, PAGE_SIZE, "%ld\n", pmbus_reg2data(data, sensor));
}static long pmbus_reg2data(struct pmbus_data *data, struct pmbus_sensor *sensor)
{long val;switch (data->info->format[sensor->class]) {case direct:val = pmbus_reg2data_direct(data, sensor);break;case vid:val = pmbus_reg2data_vid(data, sensor);break;case linear:printk(KERN_INFO "pmbus_reg2datalinear\n"); // 会打印出default:printk(KERN_INFO "pmbus_reg2datadefault, %d, %d\n", sensor->page, sensor->reg); // 0 , 139 (8b)val = pmbus_reg2data_linear(data, sensor);break;}return val;
}static long pmbus_reg2data_linear(struct pmbus_data *data,struct pmbus_sensor *sensor)
{s16 exponent;s32 mantissa;long val;printk(KERN_INFO "pmbus_reg2datad_data, %d\n", sensor->data);   // 3282if (sensor->class == PSC_VOLTAGE_OUT) {	/* LINEAR16 */exponent = data->exponent[sensor->page];mantissa = (u16) sensor->data;} else {				/* LINEAR11 */exponent = ((s16)sensor->data) >> 11;mantissa = ((s16)((sensor->data & 0x7ff) << 5)) >> 5;}val = mantissa;/* scale result to milli-units for all sensors except fans */if (sensor->class != PSC_FAN)val = val * 1000L;/* scale result to micro-units for power sensors */if (sensor->class == PSC_POWER)val = val * 1000L;if (exponent >= 0)val <<= exponent;elseval >>= -exponent;printk(KERN_INFO "pmbus_reg2data_val, %d\n", val);   // 801return val;
}

5.读ADS7830的8个channel电压：P5V0即5.0V

如下CH0：1000 1100为六进制0x8c，十进制140。从SD=1往下看，SD=0不用看。CH1中C2 C1 C0为1 0 0即0xcc即204。

cmd | (((ch >> 1) | (ch & 0x01) << 2) << 4); cmd =0x8c。

如下CH7竖着多出了一条。


i2c-test -b 7 -s 0x48 -rc 1 -d 0x8c #显示0x57即十进制87。如下x=87*9766，divisor=1000。

#define DIV_ROUND_CLOSEST(x, divisor)({   //C文件                                                       typeof(x) __x = x;                                typeof(divisor) __d = divisor;                       (((typeof(x))-1) > 0 ||                               ((typeof(divisor))-1) > 0 ||                       (((__x) > 0) == ((__d) > 0))) ?                 (((__x) + ((__d) / 2)) / (__d)) :         (((__x) - ((__d) / 2)) / (__d));         
})

# Read_ADS7830_0x48_Voltage.sh
#!/bin/bash
DIV_ROUND_CLOSEST(){__x=$1__d=$2A=$(((__x) > 0))B=$(((__d) > 0))C=$(($__d>>1))C=$(($__x+$C))C=$(($C/$__d))D=$(($__d>>1))D=$(($__x+$D))D=$(($D/$__d))E=$(($A==$B))echo $(($E?$C:$D))
}OpenChannel()
{cnt=0while truedoi2c-test -b 7 -s 0x71 -w -d 0x04 >/dev/null 2>&1if [ $? = 0 ]thenbreakfiif [ $cnt -eq 5 ]thenecho "Unable to access 9548 channel 3 !"exit 1ficnt=$(($cnt+1))done
}read_channel0(){cnt=0while truedoval_0=$(i2c-test -b 7 -s 0x48 -rc 1 -d 0x8c)  # channel1 ：不是0x8c，是0xcc(204).....if [ $? = 0 ]then#echo $val_0hex_0=${val_0:34:2}#echo $hex_0  #57dec_0=$((0x$hex_0 & 0xff)) #转为十进制#echo $dec_0   #87dec_v_0=$((dec_0*9766))dec_v_v_0=$(DIV_ROUND_CLOSEST $dec_v_0 1000)echo "ADS7830 CH0:PFM8_VCC Voltage : "$dec_v_v_0"mV"breakfiif [ $cnt -eq 5 ]thenecho "Unable to read channel0 voltage !"exit 1ficnt=$(($cnt+1))done
}read_channel7(){cnt=0while truedoval_7=$(i2c-test -b 7 -s 0x48 -rc 1 -d 0xfc)if [ $? = 0 ]then#echo $val_7hex_7=${val_7:34:2}#echo $hex_7   #57dec_7=$((0x$hex_7 & 0xff))#echo $dec_7  #dec_v_7=$((dec_7*9766))dec_v_v_7=$(($(DIV_ROUND_CLOSEST $dec_v_7 1000)*2))  # 多出一条echo "ADS7830 CH7:P3V3_EARLY Voltage : "$dec_v_v_7"mV"breakfiif [ $cnt -eq 5 ]thenecho "Unable to read channel7 voltage !"exit 1ficnt=$(($cnt+1))done
}start_ipmistack
stop_ipmistack
delete
access
OpenChannel
read_channel0
...
read_channel7
start_ipmistack

# Read_ADS7830_0X49_Voltage.sh
#!/bin/bashread_channel0(){cnt=0while truedoval_0=$(i2c-test -b 7 -s 0x49 -rc 1 -d 0x8c)if [ $? = 0 ]then#echo $val_0hex_0=${val_0:34:2}#echo $hex_0  #57dec_0=$((0x$hex_0 & 0xff))#echo $dec_0   #87dec_v_0=$((dec_0*9766))dec_v_v_0=$(($(DIV_ROUND_CLOSEST $dec_v_0 1000)*2))echo "ADS7830 CH0:P2V5_VPP_CH01 Voltage : "$dec_v_v_0"mV"breakfiif [ $cnt -eq 5 ]thenecho "Unable to read channel0 voltage !"exit 1ficnt=$(($cnt+1))done
}read_channel6(){cnt=0while truedoval_6=$(i2c-test -b 7 -s 0x49 -rc 1 -d 0xbc)if [ $? = 0 ]then#echo 6hex_6=${val_6:34:2}#echo $hex_6  #57dec_6=$((0x$hex_6 & 0xff))#echo $dec_6  #dec_v_6=$((dec_6*9766))dec_v_v_6=$(($(DIV_ROUND_CLOSEST $dec_v_6 1000)*349/100))echo "ADS7830 CH6:P5V0 Voltage : "$dec_v_v_6"mV"breakfiif [ $cnt -eq 5 ]thenecho "Unable to read channel6 voltage !"exit 1ficnt=$(($cnt+1))done
}read_channel7(){cnt=0while truedoval_7=$(i2c-test -b 7 -s 0x49 -rc 1 -d 0xfc)if [ $? = 0 ]then#echo $val_7hex_7=${val_7:34:2}#echo $hex_7   #57dec_7=$((0x$hex_7 & 0xff))#echo $dec_7  #dec_v_7=$((dec_7*9766))dec_v_v_7=$(($(DIV_ROUND_CLOSEST $dec_v_7 1000)*57/10))echo "ADS7830 CH7:P12V Voltage : "$dec_v_v_7"mV"breakfiif [ $cnt -eq 5 ]thenecho "Unable to read channel7 voltage !"exit 1ficnt=$(($cnt+1))done
}start_ipmistack
stop_ipmistack
delete
access
OpenChannel
read_channel0
...
read_channel6
read_channel7
start_ipmistack

6.读INA220电压和电流：Read_INA220_Voltage_Current.sh

#!/bin/bashdelete()
{cnt=0while truedoecho 0x73 > /sys/bus/i2c/devices/i2c-3/delete_deviceif [ $? = 0 ]thenbreakfiif [ $cnt -eq 5 ]thenecho "Unable to delete device  !"exit 1ficnt=$(($cnt+1))done
}OpenChannel()
{cnt=0while truedoi2c-test -b 3 -s 0x71 -w -d 0x02 >/dev/null 2>&1if [ $? = 0 ]thenbreakfiif [ $cnt -eq 5 ]thenecho "Unable to access 9548 channel2 !"exit 1ficnt=$(($cnt+1))done
}read_voltage(){cnt=0while truedoval_v=$(i2c-test -b 3 -s 0x41 -m 1 -rc 2 -d 0x02)if [ $? = 0 ]then#echo $val_v  #08 aahexval_v_h=${val_v:14:2}hexval_v_l=${val_v:17:2}hexval_v=${hexval_v_h}${hexval_v_l}dec_v_v=$((0x$hexval_v>>3))dec_v_v=$(($dec_v_v<<2))echo "INA220 Voltage : "$dec_v_v"mV"breakfiif [ $cnt -eq 5 ]thenecho "Unable to read INA220 voltage !"exit 1ficnt=$(($cnt+1))done
}DIV_ROUND_CLOSEST(){if [ $# -ne 2 ]thenecho 0else__x=$1__d=$2A=$(((__x) > 0))B=$(((__d) > 0))C=$(($__d>>1))C=$(($__x+$C))C=$(($C/$__d))D=$(($__d>>1))D=$(($__x+$D))D=$(($D/$__d))E=$(($A==$B))echo $(($E?$C:$D))fi
}Read_Reg()
{val=$(i2c-test -b 3 -s 0x41 -m 1 -rc 2 -d $1)val_h=${val:14:2}val_l=${val:17:2}val=${val_h}${val_l}echo $val
}start_ipmistack()
{cnt=0while truedo/etc/init.d/ipmistack start >/dev/null 2>&1s1=$(ps aux)s2="/usr/local/bin/IPMIMain"result=$(echo $s1 | grep "${s2}")if [[ "$result" != "" ]]thenbreakfiif [ $cnt -eq 5 ]thenecho "Unable to start ipmistack !"exit 1ficnt=$(($cnt+1))sleep 10done
}start_ipmistack
stop_ipmistack
delete
access
OpenChannel
read_voltagei2c-test -b 3 -s 0x41 -w -d 0x05 0x03 0x7f >/dev/null 2>&1  #0x37f上面的校正值
config_shunt_div=100
dividend=$(DIV_ROUND_CLOSEST 1000000000 $config_shunt_div)
shunt_val=$(Read_Reg 0x01)current_lsb_uA=$(DIV_ROUND_CLOSEST $dividend 0x$shunt_val)
current_val=$(Read_Reg 0x04)
ret=$((0x$current_val * $current_lsb_uA))
ret=$(DIV_ROUND_CLOSEST $ret 1000)
echo "INA220 Current : "$ret"mA"
start_ipmistack