LSM303C异常功耗和加速模块发生故障

嗨，ST
使用LSM303C时遇到了一些问题。我们操作LSM303C在模块上电后进入掉电模式。
一般来说，LSM303C的电流消耗约为6 uA

一贯
与数据表e
电气特性
表。但有时候

模块上电后，电流消耗将增加到48 uA。似乎加速模块不适合阅读
ccelerometer Who_AM_I注册得到0x00但没有
0×41。什么可能导致这种现象。请给我们一些指导意见。
我们的操作代码如下：
void LSM303C_Init（void）
{
I2C_WriteOneByte（lsm303_acc，LSM303C_CTRL_REG5_A，0x40）; //软复位

user_delay_ms（10）;
I2C_WriteOneByte（lsm303_acc，LSM303C_CTRL_REG6_A，0x80）; //强制重启
user_delay_ms（5）; I2C_WriteOneByte（lsm303_mag，LSM303C_CTRL_REG2_M，0x0c）; //重启内存内容，并重置寄存器

user_delay_ms（10）;
I2C_WriteOneByte
（lsm303_acc，LSM303C_CTRL_REG1_A，0x00）; //掉电
I2C_WriteOneByte
（lsm303_mag，LSM303C_CTRL_REG3_M，0x03）; //掉电
}

#power-consumption＃lsm303c



以下为原文




Hi, ST
    We met some problem when used LSM303C. We operated LSM303C go to power-down mode after the module power on .
Generally , the LSM303C current consumption is about 6 uA which is

consistent
with the datasheet e
lectrical characteristics
table. But sometimes the

current consumption would increase to 48 uA after the module power on. And it seems that the acceleration module didn't work well for reading  a
ccelerometer Who_AM_I register to get 0x00 but not
0x41.  What may cause this phenomenon. Please give us some guide advice.
     Our operating codes are as follow:

void LSM303C_Init(void)

{
I2C_WriteOneByte(lsm303_acc,LSM303C_CTRL_REG5_A, 0x40);//Soft reset

user_delay_ms(10);
I2C_WriteOneByte(lsm303_acc,LSM303C_CTRL_REG6_A, 0x80);//Force reboot
user_delay_ms(5);I2C_WriteOneByte(lsm303_mag,LSM303C_CTRL_REG2_M, 0x0c);//Reboot memory content, And register reset

user_delay_ms(10);
I2C_WriteOneByte
(lsm303_acc,LSM303C_CTRL_REG1_A, 0x00);//power down
I2C_WriteOneByte
(lsm303_mag,LSM303C_CTRL_REG3_M, 0x03);//power down
}

#power-consumption #lsm303c