hi, can i use STM32F100RB to interface SPWF04SA via UART or SPI? i checked around no much example using these two together. any API or tutorial example i can use and follow?
You perhaps want to look at the Nucleo shield board, and software
X-NUCLEO-IDW04A1 - Wi-Fi expansion board based on SPWF04SA module for STM32 Nucleo - STMicroelectronics
X-CUBE-WIFI1 - Wi-Fi software expansion for STM32Cube - STMicroelectronics
and port functionality back from the NUCLEO-F103RB examples
"can i use STM32F100RB to interface SPWF04SA via UART or SPI?"
yes, if you can get both to talk the same protocol.
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