From 7818133f52744e2d7abd6a72befbca5c4277920c Mon Sep 17 00:00:00 2001 From: Mikael Nousiainen Date: Sat, 7 Oct 2023 01:02:06 +0300 Subject: [PATCH] Improve DFM-17 docs --- README.md | 27 ++++++++++++++++----------- 1 file changed, 16 insertions(+), 11 deletions(-) diff --git a/README.md b/README.md index 203039b..dc9e90a 100644 --- a/README.md +++ b/README.md @@ -365,7 +365,7 @@ Follow the instructions below for the radiosonde model you have. ### Vaisala RS41 programming connector -The pinout of the RS41 connector (by DF8OE and VK5QI) is the following: +The pinout of the RS41 programming connector (by DF8OE and VK5QI) is the following: ``` ______________________| |______________________ @@ -407,7 +407,10 @@ ______________________| |______________________ ### Graw DFM-17 programming connector -The pinout of the DFM-17 connector is the following: +The DFM-17 programming connector is an unpopulated group of pads on the circuit board +between the sensor boom connector and the main STM32 microcontroller. + +The pinout of the DFM-17 programming connector is the following: ``` _____ @@ -435,7 +438,7 @@ _____ * This pin powers the device via 3.3V voltage from an ST-LINK programmer dongle * 2 - SWDIO / TMS * 3 - GND -* 4 - SWDCLK / TCK +* 4 - SWCLK / TCK * 5 - GND * 6 - SWO EXT TRACECTL / TDO * 7 - KEY @@ -445,15 +448,17 @@ _____ #### Connect the DFM-17 radiosonde to the programmer -1. If your ST-LINK v2 programmer is capable of providing a voltage of 3.3V (as some third-party clones are), - remove the batteries from the sonde. Otherwise, leave the batteries in and power on the sonde. +1. Since the DFM-17 programming connector is just an unpopulated group of pads on the circuit board, + **you will need to either solder wires directly to the pads or alternatively solder a 0.05" (1.27mm) 5-by-2 pin header to the pads**. + There are suitable ribbon cables with 5x2 0.05" connectors available for this type of pin header. 2. Connect an ST-LINK v2 programmer dongle to the sonde via the following pins: - * SWDIO -> (SWDIO) - * SWCLK -> (SWCLK) - * RST -> (RST) - * GND -> (GND) - * 3.3V -> (VTRef) (only required when using the programmer to power the sonde) - * Note that you will need to either solder wires directly to the connector or solder a 0.05" (1.27mm) 5-by-2 pin header to the connector. + * SWDIO -> Pin 2 (SWDIO) + * SWCLK -> Pin 4 (SWCLK) + * RST -> Pin 10 (RST) + * GND -> Pin 5 (GND) + * 3.3V -> Pin 1 (VTRef) (only required when using the programmer to power the sonde) +3. If your ST-LINK v2 programmer is capable of providing a voltage of 3.3V (as some third-party clones are), + remove the batteries from the sonde. Otherwise, leave the batteries in and power on the sonde. ## Flashing the radiosonde with the firmware (both RS41 and DFM-17)