ZeroPilot 3.0 Pin Descriptions

The processor used is the STM32L56ZET6Q.

Pin: is the pin, as seen in STM32CubeMx

Port: is the label used for the device in the schematic

Device: is the device that will be connected to the given pin

Notes: describe any additional information or configuration that should be considered

Pin	Port	Device	Notes

Pin	Port	Device	Notes
(33)-PA0	UART4_TX	UART4_TX
(34)-PA1	UART4_RX	UART4_RX
(35)-PA2	USART2_TX	USART2_TX
(36)-PA3	USART2_RX	USART2_RX
(39)-PA4	PWR_SENSE	ADC2_IN9	Measures the voltage available to the system after power filter Calculated using `V = PWR_SENSE * 18.28395` (280k, 16.2k voltage divider)
(41)-PA6	ADC12_IN11	ADC1_IN11
(42)-PA7	ADC12_IN12	ADC1_IN12
(103)-PA11	USART1_CTS	USART1_CTS
(104)-PA12	USART1_RTS	USART1_RTS
(105)-PA13	SWDIO
(109)-PA14	SWCLK
(110)-PA15	UART4_RTS	UART4_RTS
(26)-PC0	I2C3_SCL	I2C3_SCL
(27)-PC1	I2C3_SDA	I2C3_SDA
(28)-PC2	VBAT_B_SENSE	ADC2_IN3	Measures the battery voltage of battery B Calculated using `V = VBAT_B_SENSE * 18.28395` (280k, 16.2k voltage divider) Needs to be on a different ADC than VBAT_A to avoid mux delays
(98)-PC8	SDMMC1_D0	SDMMC1_D0
(99)-PC9	SDMMC1_D1	SDMMC1_D1
(111)-PC10	SDMMC1_D2	SDMMC1_D2
(112)-PC11	SDMMC1_D3	SDMMC1_D3
(113)-PC12	SDMMC1_CK	SDMMC1_CK
(43)-PB0	ADC12_IN15	ADC1_IN15
(44)-PB1	VBAT_A_SENSE	ADC2_IN16	Measures the voltage of battery A Calculated using `V = VBAT_A_SENSE * 18.28395` (280k, 16.2k voltage divider) Needs to be on a different ADC than VBAT_B to avoid mux delays
(45)-PB2	GPIO_1	GPIO_Output
(132)-PB3	SWO
(136)-PB7	UART4_CTS	UART4_CTS
(138)-PB8	TIM16_CH1	TIM16_CH1	PWM DMA
(139)-PB9	TIM17_CH1	TIM17_CH1	PWM DMA
(66)-PB10	LPUART1_RX	LPUART1_RX
(67)-PB11	LPUART1_TX	LPUART1_TX
(75)-PB14	SPI2_MISO	SPI2_MISO
(76)-PB15	SPI2_MOSI	SPI2_MOSI
(114)-SD0	SPI2_NSS	SPI2_NSS
(115)-PD1	SPI2_SCK	SPI2_SCK
(116)-PD2	SDMMC1_CMD	SDMMC1_CMD
(117)-PD3	GPIO_6	GPIO_Output
(118)-PD4	GPIO_7	GPIO_Output
(119)-PD5	GPIO_8	GPIO_Output
(122)-PD6	GPIO_9	GPIO_Output
(123)-PD7	GPIO_10	GPIO_Output
(77)-PD8	USART3_TX	USART3_TX
(78)-PD9	USART3_RX	USART3_RX
(81)-PD12	TIM4_CH1	TIM4_CH1	PWM Basic
(82)-PD13	TIM4_CH2	TIM4_CH2	PWM Basic
(85)-PD14	TIM4_CH3	TIM4_CH3	PWM Basic
(86)-PD15	TIM4_CH4	TIM4_CH4	PWM Basic
(2)-PE3	TIM3_CH1	TIM3_CH1	PWM Basic
(3)-PE4	TIM3_CH2	TIM3_CH2	PWM Basic
(4)-PE5	TIM3_CH3	TIM3_CH3	PWM Basic
(5)-PE6	TIM3_CH4	TIM3_CH4	PWM Basic
(57)-PE9	TIM1_CH1	TIM1_CH1	PWM DMA
(61)-PE11	TIM1_CH2	TIM1_CH1	PWM DMA
(62)-PE12	SPI1_NSS	SPI1_NSS
(63)-PE13	SPI1_SCK	SPI1_SCK
(64)-PE14	SPI1_MISO	SPI1_MISO
(65)-PE15	SPI1_MOSI	SPI1_MOSI
(53)-PG0	GPIO_LED_1	GPIO_Output	LED 1, Yellow component
(54)-PG1	GPIO_LED_2	GPIO_Output	LED 1, Green Component
(87)-PG2	GPIO_LED_3	GPIO_Output	LED 1, Red Component
(88)-PG3	GPIO_LED_4	GPIO_Output	LED 2, Yellow Component
(89)-PG4	GPIO_LED_5	GPIO_Output	LED 2, Green Component
(90)-PG5	GPIO_LED_6	GPIO_Output	LED 2, Red Component
(91)-PG6	GPIO_IL_B	GPIO_Input	GPIO interlock, should be read high (3V3) to ensure interface board is properly connected
(92)-PG7	GPIO_IL_A	GPIO_Input	GPIO interlock, should be read high (3V3) to ensure interface board is properly connected
(124)-PG9	USART1_TX	USART1_TX
(125)-PG10	USART1_RX	USART1_RX
(127)-PG13	I2C1_SDA	I2C1_SDA
(128)-PG14	I2C1_SCL	I2C1_SCL
(10)-PF0	I2C2_SDA	I2C2_SDA
(11)-PF1	I2C2_SCL	I2C2_SCL
(12)-PF2	GPIO_IL_D	GPIO_Input	GPIO interlock, should be read high (3V3) to ensure interface board is properly connected
(13)-PF3	GPIO_IL_C	GPIO_Input	GPIO interlock, should be read high (3V3) to ensure interface board is properly connected
(18)-PF6	TIM5_CH1	TIM5_CH1	PWM DMA
(19)-PF7	TIM5_CH2	TIM5_CH2	PWM DMA
(20)-PF8	TIM5_CH3	TIM5_CH3	PWM DMA
(21)-PF9	TIM5_CH4	TIM5_CH4	PWM DMA
(46)-PF11	uSD_Detect	GPIO_Input	Pin low when SD card is inserted and high when SC card slot is vacant
(47)-PF12	GPIO_2	GPIO_Output
(50)-PF13	GPIO_3	GPIO_Input
(51)-PF14	GPIO_4	GPIO_Output
(52)-PF15	GPIO_5	GPIO_Output