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Merge pull request #678 from k-korn/master

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Add ADS1015 support to ads111x lib.
This commit is contained in:
Ruslan V. Uss 2018-08-25 00:28:28 +05:00 committed by GitHub
commit f82a420b87
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2 changed files with 29 additions and 0 deletions
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12
extras/ads111x/ads111x.c
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@ -93,6 +93,18 @@ int16_t ads111x_get_value(i2c_dev_t *dev)
return read_reg(dev, REG_CONVERSION); return read_reg(dev, REG_CONVERSION);
} }
int16_t ads101x_get_value(i2c_dev_t *dev)
{
uint16_t res = read_reg(dev, REG_CONVERSION) >> 4;
if (res > 0x07FF)
{
// negative number - extend the sign to 16th bit
res |= 0xF000;
}
return (int16_t)res;
}
ads111x_gain_t ads111x_get_gain(i2c_dev_t *dev) ads111x_gain_t ads111x_get_gain(i2c_dev_t *dev)
{ {
return read_conf_bits(dev, PGA_OFFSET, PGA_MASK); return read_conf_bits(dev, PGA_OFFSET, PGA_MASK);

17
extras/ads111x/ads111x.h
View file

@ -22,6 +22,16 @@ extern "C" {
#define ADS111X_ADDR_SCL 0x4b #define ADS111X_ADDR_SCL 0x4b
#define ADS111X_MAX_VALUE 0x7fff #define ADS111X_MAX_VALUE 0x7fff
#define ADS101X_MAX_VALUE 0x7ff
// ADS101X overrides
#define ADS101X_DATA_RATE_128 ADS111X_DATA_RATE_8
#define ADS101X_DATA_RATE_250 ADS111X_DATA_RATE_16
#define ADS101X_DATA_RATE_490 ADS111X_DATA_RATE_32
#define ADS101X_DATA_RATE_920 ADS111X_DATA_RATE_64
#define ADS101X_DATA_RATE_1600 ADS111X_DATA_RATE_128
#define ADS101X_DATA_RATE_2400 ADS111X_DATA_RATE_250
#define ADS101X_DATA_RATE_3300 ADS111X_DATA_RATE_475
/** /**
* Gain amplifier * Gain amplifier
@ -140,6 +150,13 @@ void ads111x_start_conversion(i2c_dev_t *dev);
*/ */
int16_t ads111x_get_value(i2c_dev_t *dev); int16_t ads111x_get_value(i2c_dev_t *dev);
/**
* Read last conversion result for 101x
* @param addr
* @return Last conversion result
*/
int16_t ads101x_get_value(i2c_dev_t *dev);
/** /**
* Read the programmable gain amplifier configuration * Read the programmable gain amplifier configuration
* (ADS1114 and ADS1115 only). * (ADS1114 and ADS1115 only).