 |
PSoC 6 Peripheral Driver Library
|
|
PSoC 6 Peripheral Driver Library
|
Variables | |
| volatile int16_t | Cy_SAR_offset [CY_SAR_MAX_NUM_CHANNELS] |
| This array is used to calibrate the offset for each channel. More... | |
| volatile int32_t | Cy_SAR_countsPer10Volt [CY_SAR_MAX_NUM_CHANNELS] |
| This array is used to calibrate the gain for each channel. More... | |
| volatile int16_t Cy_SAR_offset[CY_SAR_MAX_NUM_CHANNELS] |
This array is used to calibrate the offset for each channel.
At initialization, channels that are single-ended, signed, and with Vneg = Vref have an offset of -(2^12)/2 = -2048. All other channels have an offset of 0. The offset can be overridden using Cy_SAR_SetOffset.
The channel offsets are used by the Cy_SAR_CountsTo_Volts, Cy_SAR_CountsTo_mVolts, and Cy_SAR_CountsTo_uVolts functions to convert counts to voltage.
| volatile int32_t Cy_SAR_countsPer10Volt[CY_SAR_MAX_NUM_CHANNELS] |
This array is used to calibrate the gain for each channel.
It is set at initialization and the value depends on the SARADC resolution and voltage reference, 10*(2^12)/(2*Vref). The gain can be overridden using Cy_SAR_SetGain.
The channel gains are used by the Cy_SAR_CountsTo_Volts, Cy_SAR_CountsTo_mVolts, and Cy_SAR_CountsTo_uVolts functions to convert counts to voltage.