I'm referring to the CC3200 which is TI's ARM M4 based MCU and a WiFi processor in a single chip (with the need for an external Flash memory). They have the popular Launchpad for prototyping and testing purposes. I'm building a custom CC3200 board however without the JTAG emulator and FTDI programmer and instead using those from the Launchpad to program the Flash and MCU on my custom board. I'm planning to do this via the UART and RESET lines taken from the launchpad itself (and another single pin from the JTAG interface that pulls a specific pin on the CC3200 HIGH while the Flash is being programmed). The software used for programming is called Uniflash.
My question is whether I can use these UART, RESET and the specific JTAG pin to program multiple devices at the same time. What I mean is can I make a bus of these lines and essentially gang several custom boards to be programmed at the same time? Should I be aware of any electrical characteristics that I need to account for?
My question is whether I can use these UART, RESET and the specific JTAG pin to program multiple devices at the same time. What I mean is can I make a bus of these lines and essentially gang several custom boards to be programmed at the same time? Should I be aware of any electrical characteristics that I need to account for?