I am looking ahead to the time when I will graduate from using the nRF52 development board to building a custom device with the SoC. The PCA10036 chip will obviously not be on our custom board. We will need to program our device. I expect we will include a USB to UART chip to transfer data.
Reading through the nRF52832 specification sheet, it would appear that the UART is routed through GPIO pins. Which ones? There must be a default configuration on boot-up in order to get data into the on-board flash memory.
What is the protocol for programming the flash without the PCA10036 chip? I know how to do it with JLink, but I expect that JLink won't work without the PCA10036.
Last question: is it possible, through carelessness, to assign the UART pins to another function?
