From 27d077eb03da317592cf0af801d2a9a0db590846 Mon Sep 17 00:00:00 2001 From: Mobilinkd LLC Date: Sun, 28 Jul 2019 21:40:50 -0500 Subject: [PATCH] Add USB cable troubleshooting. --- WindowsFirmwareUpdate.md | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/WindowsFirmwareUpdate.md b/WindowsFirmwareUpdate.md index f834b9c..7058b70 100644 --- a/WindowsFirmwareUpdate.md +++ b/WindowsFirmwareUpdate.md @@ -299,6 +299,22 @@ This section is very brief for now. ## TNC is not available in programmer +There are a number of possible causes for the TNC not showing up in the programmer. + +### Is Bootloader Active + +The first thing to check is that the bootloader is active. If the blue LED flashes or breathes, +the bootloader is not active. See [Cannot Enter Bootloader/DFU](#Cannot-Enter-Bootloader-DFU) below. + +### Check Your USB Cable + +The TNC has a USB serial port. You should see a notification when the TNC is first attached via USB, +before entering the bootloader, that a COM port is being added. If you do not see this occur, verify +that your USB cable is OK. Try a different cable. There are a number of "charge-only" cables being +sold these days. These will not work. You will need a USB data cable. + +### Old STM DFU Driver Installed + Open the device manager. Check whether “STM Device in DFU Mode” appears under the “Universal Serial Bus Controllers”