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ina3221 ptr NULL security

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This commit is contained in:
lilian 2017-11-17 20:44:02 +01:00
parent 691cf4ed62
commit 8a9c3fd9e8
3 changed files with 15 additions and 11 deletions
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14
extras/ina3221/ina3221.c
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@ -132,7 +132,8 @@ int ina3221_getBusVoltage(ina3221_t *dev, ina3221_channel_t channel, float *volt
int err = 0;
if ((err = _wireReadRegister(&dev->i2c_dev, INA3221_REG_BUSVOLTAGE_1 + channel * 2, (uint16_t*)&raw_value)))
return err;
*voltage = raw_value * 0.001; //V 8mV step
if (voltage)
*voltage = raw_value * 0.001; //V 8mV step
return 0;
}
@ -140,15 +141,18 @@ int ina3221_getShuntValue(ina3221_t *dev, ina3221_channel_t channel, float *volt
{
int16_t raw_value;
int err = 0;
if ((err = _wireReadRegister(&dev->i2c_dev, INA3221_REG_SHUNTVOLTAGE_1 + channel * 2, (uint16_t*)&raw_value)))
if ((err = _wireReadRegister(&dev->i2c_dev,INA3221_REG_SHUNTVOLTAGE_1+channel*2, (uint16_t*)&raw_value)))
return err;
*voltage = raw_value * 0.005; //mV 40uV step
if (!dev->shunt[channel])
float compute = raw_value*0.005; //mV 40uV step
if (voltage)
*voltage = compute;
if(!dev->shunt[channel])
{
debug("No shunt configured for channel %u. Dev:%u:%X\n", channel+1, dev->bus, dev->addr);
return -EINVAL;
}
*current = (*voltage * 1000.0) / dev->shunt[channel]; //mA
if (current)
*current = (compute*1000.0)/dev->shunt[channel]; //mA
return 0;
}

10
extras/ina3221/ina3221.h
View file

@ -26,7 +26,7 @@ extern "C" {
#define INA3221_ADDR_2 (0x42) ///< A0 to SDA
#define INA3221_ADDR_3 (0x43) ///< A0 to SCL
#define BUS_NUMBER 3 ///< Number of shunt available
#define INA3221_BUS_NUMBER 3 ///< Number of shunt available
#define INA3221_REG_CONFIG (0x00)
#define INA3221_REG_SHUNTVOLTAGE_1 (0x01)
@ -133,10 +133,10 @@ typedef union
* Device description
*/
typedef struct {
const i2c_dev_t i2c_dev; ///< ina3221 I2C address
const uint16_t shunt[BUS_NUMBER]; ///< Memory of shunt value (mOhm)
ina3221_config_t config; ///< Memory of ina3221 config
ina3221_mask_t mask; ///< Memory of mask_config
const i2c_dev_t i2c_dev; ///< ina3221 I2C address
const uint16_t shunt[INA3221_BUS_NUMBER]; ///< Memory of shunt value (mOhm)
ina3221_config_t config; ///< Memory of ina3221 config
ina3221_mask_t mask; ///< Memory of mask_config
} ina3221_t;
/**