M3 - GPIO

GPIO Configuration and Pins

For general purpose ports

Interrupts review

MSP430 Design Workshop

Generic Designations

MSP430FR2433 Launchpad Pinouts Functions for pins are multiplexed, the arrows point to the Port.Pin designationFor the connections to the LaunchPad Board

PxDir 0 PxIn 1 PxOutPxREN (input mode) PxOUT 0 – pull down

1 – pull upPxSel 00→10ADCPCtLx – ADC Input

PxIE – Interrupt Enable PinPxIES – Rising or falling edgePxIFG – Interrupt Flag (status)

GIE – General Interrupt Enable

PxDir 0 PxIn 1 PxOutPxREN (input mode) PxOUT 0 – pull down

1 – pull upPxSel 00→10ADCPCtLx – ADC Input

PxIE – Interrupt Enable PinPxIES – Rising or falling edgePxIFG – Interrupt Flag (status)

GIE – General Interrupt Enable

Interrupts Review

Code for ISR push button to toggle LED

Interrupt review MSP430-Interrupts-posted.pdf

Push a button, create an interrupt Switch 1 → P2.3

Maskable – turn on/off with a flag

CPU Registers

FRAM

SRAM