Software: Pitfalls!
Peripheral Pin sharing Many times pins share functions. E.g., a GPIO will share a pin with a UART module (say the TX line). You CAN’T use one pin for two functions! You must choose between them.
Peripheral Resource Sharing Some resources require using the same resource. For example, some of the PWM modules use TMR2, which may also be used in the USART module.
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