Working with Microchip PIC 8-bit GPIO
The third in a series of five posts looks at GPIO with PIC 8-bit microcontrollers. After a detailed review of the registers for configuring and managing GPIO on the PIC18F47Q10 processor, a basic application is stood up programming those registers to blink external LEDs at 0.5Hz.
Summary
This post examines GPIO on Microchip's PIC 8-bit family, focusing on the PIC18F47Q10. It walks through the key registers for configuring digital I/O and shows a simple bare-metal application that blinks external LEDs at 0.5 Hz, giving readers a practical example of register-level firmware for GPIO.
Key Takeaways
- Describe the purpose and usage of PIC18F47Q10 GPIO registers (TRISx, LATx, PORTx, ANSELx, WPUx)
- Configure pin direction, digital/analog modes, and weak pull-ups at the register level
- Implement a bare-metal LED blink using XC8/MPLAB X to demonstrate real register writes
- Validate and debug GPIO behavior using simulator/print-debug techniques and simple hardware checks
Who Should Read This
Embedded firmware engineers or hardware-focused developers with basic C and microcontroller knowledge who want practical, register-level skills for configuring and debugging GPIO on PIC 8-bit parts.
Still RelevantIntermediate
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