#define GPIO_PIN(x, y)
Define a CPU specific GPIO pin generator macro.
Definition of a fitting UNDEF value.
Note that we do not configure all ADC channels, and not in the STM32G070 order. Instead, we just define 6 ADC channels, for the Nucleo Arduino header pins A0-A5 and the internal VBAT channel.
To find appropriate device and channel find in the board manual, table showing pin assignments and information about ADC - a text similar to ARD_A[N]_IN[X], where: [N] - describes analog pin number, [X] - describes used channel - indexed from 1, for example ARD_A5_IN16 is channel 16
For Nucleo-G070RB this information is in board manual, Table 12, page 30.
VBAT is connected to an internal input and voltage divider is used, so that only 1/3 of the actual VBAT is measured. This allows for a supply voltage higher than the reference voltage.
For Nucleo-G070RB more information is provided in MCU datasheet, in section 3.14.3 - Vbat battery voltage monitoring, page 22.
Definition at line 116 of file periph_conf.h.