ST Nucleo G431RB

The Nucleo G431RB is a member of the Nucleo-64 board family.

Configurations

ihm16m1_f32 and ihm16m1_b16:

These examples are dedicated for the X-NUCLEO-IHM16M1 expansion board based on STSPIN830 driver for three-phase brushless DC motors.

X-NUCLEO-IHM16M1 must be configured to work with FOC and 3-shunt resistors. See ST documentation for details.

Pin configuration for the X-NUCLEO-IHM16M1 (TIM1 configuration):

Board Function	Chip Function	Chip Pin Number
Phase U high	TIM1_CH1	PA8
Phase U enable	GPIO_PB13	PB13
Phase V high	TIM1_CH2	PA9
Phase V enable	GPIO_PB14	PB14
Phase W high	TIM1_CH3	PA10
Phase W enable	GPIO_PB15	PB15
EN_FAULT	GPIO_PB12	PB12
Current U	GPIO_ADC1_IN2	PA1
Current V	GPIO_ADC1_IN12	PB1
Current W	GPIO_ADC1_IN15	PB0
Temperature	?	PC4
VBUS	GPIO_ADC1_IN1	PA0
BEMF1	NU
BEMF2	NU
BEMF3	(NU)
LED
+3V3 (CN7_16)
GND (CN7_20)
GPIO_BEMF	(NU)
ENCO_A/HALL_H1
ENCO_B/HALL_H2
ENCO_Z/HALL_H3
GPIO1	(NU)
GPIO2	(NU)
GPIO3	(NU)
CPOUT	(NU)
BKIN1	(NU)
POT	GPIO_ADC1_IN8	PC2
CURR_REF	(NU)
DAC	(NU)

Current shunt resistance = 0.33 Current sense gain = -1.53 (inverted current) Vbus sense gain = 9.31k/(9.31k+169k) = 0.0522124390107 Vbus min = 7V Vbus max = 45V Iout max = 1.5A RMS

IPHASE_RATIO = 1/(R_shunt*gain) = -1.98 VBUS_RATIO = 1/VBUS_gain = 16

For now only 3-shunt resistors configuration is supported.