|01||What is single-wire SWUT interface?|
|Ans.||By means of PC USB port going through WLINK-SWUT, SWUT (Single Wire UART) turns UART into SWUT. The UART Protocol integrates RX and TX into a single line as Simplex Transmission, so the data will not collide with each other.|
|02||Why does wait Com Port timeout occur?|
|Ans.||When the Host issues Command to the Target IC by SWUT, and Target IC replies the erroneous content numbers or makes no response to the Host. In the meantime, please check if the Baud Rate is accurate or not, and also the cable connected condition.|
|03||Why is Com Port not found?|
|Ans.||AP attempts to turn on PC Com Port, while it did not get response from the system. Please check if the Com Port configuration in PC Device Manager is consistent with the AP.|
|04||What is a DES file? What is an Append Encryption Key to Hex (des) file?|
|Ans.||DES file is a file format exclusively used by Weltrend company, which is same as the Intel Hex file format, but the data content has been encrypted with 128-bit key, other data such as the number of addresses, etc. are the same. During developing program, the AP loads the Hex file generated by KeilC and then generates the DES file by operating with 128-bit key. Append Encryption Key to Hex(des) file option decides whether to add 128-bit key into the DES file so as to facilitate programming Code and keys to the IC in mass production, and only need to pay attention to code security.|
|05||What is the feature of SWUT M1/M4 burn key?|
|Ans.||When the AP configuration has set an encryption programming, 128 bit Encryption Key is available for selection. And then the program goes together with 128 bit key to the IC during programming.|
|06||Why does not the program run when the encryption programming is complete and correct?|
|Ans.||Please make sure if IC has been programmed into the Key or 128 bit key is consistent with the DES file.|
|07||How to use Programming Serial No. or Rolling Code|
|Ans.||In AP tab Code Option, enable Enable Costumer ID (Serial No.), use as Serial No. and Auto Increment after programming. Then click “|
|08||Which operating systems of Microsoft can be installed for Weltrend ICE Driver?|
|Ans.||ICE Driver can be installed on Windows XP, Windows Vista, Windows 7 (32 bit), and Windows 7 (64 bit).|
|09||9. Does it need to remove the existing version of Weltrend ICE Driver if the newer version is available?|
|Ans.||When installing you may remove the existing version, or it will be overwritten by the new version. Either will do.|
|10||Does it support programming encryption in Keil C environment after installing Weltrend ICE Driver?|
|Ans.||Programming in Keil C environment now does not support encryption. Please make use of the SWUT_ISP.exe for encryption programming.|
|11||Programming is not allowed in the early stage of software development:|
|Ans.||※WLINK-SWUT COM port setting error, please confirm the COM port number of PC.
※Reset pin is shared with SWUT, and thus the Reset pin on development board must be disconnected first prior to programming. (A short jump must be disconnected near the Reset Key).
※Programming Voltage issues:
Green WLINK-SWUT programming board: support 5V programming.
Blue WLINK-SWUT programming board: support 3.3V/5V programming, either Jump switching to 3.3V, 5V or power from Main board is available.
|12||Programming succedded in the first time while failing afterwards:|
Code Option setting error: MCU Source clock selection error, turning off internal or external oscillator power resulting in MCU cannot work.
Source clock is not working in 12MHz, resulting in programming buad rate error.
MCU entering into Sleep mode, without setting wakeup conditions thus resulting in programming failure.
MCU entering into Green mode, without setting conditions to allow MCU switching back to 12 MHZ thus resulting in programming failure.
The Code option has been simplified by the programming tool SWUT ISP V1.21, and it is set by program code only leave Customer ID for customer use.
MCU works in the mode below:
External oscillator non 12 MHz
Please consult the Data sheet section 6.7 ISP Clock Source Control Register Description & Program Example. Due to not familiared with the MCU operation in the early stage of software development, adding a delay subroutine (3 ~ 5 seconds) in the beginning of the program is recommended, and then setting the working mode of MCU to reduce programming failure caused by setting error.
|13||The voltage range of SWUT & NRST (Reset)?|
|Ans.||WT56F216 / WT51F104
|14||How to select WLINK-SWUT programming voltage?|
|Ans.||WLINK-SWUT can select three types of programming voltage:
1. JP3 Pin 1-2 shorted: indicates WLINK-SWUT can provide 3.3V voltage for SWUT programming use.
2. JP3 Pin 2-3 shorted: indicates WLINK-SWUT can provide 5V voltage for SWUT programming use.
3. JP3 Pin all open: use the power on development board to provide SWUT programming voltage (voltage range: 2.2V ~ 5.5V).
|15||How to install PC COM Port without plugging WLINK-SWUT?|
|Ans.||Press the button below to reset PC COM Port.