stm32 /stm32h7 /STM32H723 /ADC3 /ADC_OFR4

Data offset y for the channel programmed into bits OFFSET_CH[4:0] These bits are written by software to define the offset to be subtracted from the raw converted data when converting a channel (can be regular or injected). The channel to which applies the data offset must be programmed in the bits OFFSET_CH[4:0]. The conversion result can be read from in the ADC_DR (regular conversion) or from in the ADC_JDRyi registers (injected conversion). Note: The software is allowed to write these bits only when ADSTART = 0 and JADSTART = 0 (which ensures that no conversion is ongoing). If several offset (OFFSET) point to the same channel, only the offset with the lowest x value is considered for the subtraction. Ex: if OFFSET1_CH[4:0] = 4 and OFFSET2_CH[4:0] = 4, this is OFFSET1[11:0] which is subtracted when converting channel 4.

Positive offset This bit is set and cleared by software to enable the positive offset. Note: The software is allowed to write these bits only when ADSTART = 0 and JADSTART = 0 (which ensures that no conversion is ongoing).

0 (B_0x0): Negative offset

1 (B_0x1): Positive offset

Saturation enable This bit is set and cleared by software to enable the saturation at 0x000 and 0xFFF for the offset function. Note: The software is allowed to write these bits only when ADSTART = 0 and JADSTART = 0 (which ensures that no conversion is ongoing).

0 (B_0x0): No saturation control, offset result can be signed

1 (B_0x1): Saturation enabled, offset result unsigned and saturated at 0x000 and 0xFFF

Channel selection for the data offset y These bits are written by software to define the channel to which the offset programmed into bits OFFSET[11:0] applies. Note: The software is allowed to write these bits only when ADSTART = 0 and JADSTART = 0 (which ensures that no conversion is ongoing). Some channels are not connected physically and must not be selected for the data offset y. If OFFSET_EN is set, it is not allowed to select the same channel for different ADC_OFRy registers.

Offset y enable This bit is written by software to enable or disable the offset programmed into bits OFFSET[11:0]. Note: The software is allowed to write this bit only when ADSTART = 0 and JADSTART = 0 (which ensures that no conversion is ongoing).