Problem Description
The MCU+ SDK comes with a GPIO_INPUT_INTERRUPT example for R5FSS0-0. This example configures a GPIO pin to generate an interrupt and then registers an interrupt handler to service the GPIO interrupt. This example works out-of-the box with MCU+ SDK. However, when running Linux on A53 and NORTOS/FreeRTOS on other cores, this GPIO_INPUT_INTERRUPT does not work. It fails by reporting the following error:
[Error] Sciclient event config failed!!!
In this FAQ, we will cover the WHAT, WHY and HOW of the issue. We will discuss WHAT is causing the issue, WHY the issue happens and HOW to resolve the issue.