Silverware Wiki

If a copter uses supported chips, adding it to Silverware should really easy.

These copters should be rebrands and therefore supported if the 'parent' is:

• DHD D1:
• possible two board types, quite different visually. Check before flashing
• Floureon X-10
• 2FAST2FUN Color Quad XS
• Fayee Fy804

• Eachine H8 blue:
• JJRC H8 blue

The cx-10 uses a voltage regulator that gets turned on by the cpu. When the switch gets turned on, a capacitor powers the regulator for about 1 second, and in that time, the cpu has to turn a pin on, to keep the regulator on.

For this reason, programming has to use 4 wires (one for power) , or else the quad turns off while flashing.

You can see if it has one of those regulators, because they have 5 pins. Normally they just look like a mosfet. This feature is present in small quads with built in battery and a power switch. Presumably it is to save the battery in case the quad is forgot powered on.

In software, this pin is noted as Vreg pin, and the pin set as such gets turned on as soon as possible.

Read this post first.

Before flashing, the hardware.h file must be configured to assign the correct pins to the processor for the board you are going to flash. There are instructions at the top of the hardware.h file. For an example of how to set up the LED's, read this post.

Since different quads have different pins of the main processor assigned to different functions (motors, LED's, gyro), silvverxxx made the code configurable. Of course, the default settings are for another Copter and nothing has to be done for a natively supported copter. This is only for if you want to flash a quad that uses an STM32F031 processor and it isn't a natively supported one.

First you need to trace the pcb and find out what pins of the processor go to the gyro, the LED's and the motors. This is not easy on some pcb's as the traces can go from the top side to the bottom side through tiny copper tubes called vias. Other boards are easier and can sometimes be traced just from close-up pics on the internet.

Once you know the connections for the gyro, motors, LED's and battery voltage divider (for low battery voltage warning) you can assign the pins in the firmware by opening up the file hardware.h in Keil.

There are some further instructions in this post.

The “st-link utility” can also be used to erase a STM32 chip, as well as to upload a binary file already compiled ( maybe with gcc). Sometimes, the utility can erase ships that Keil wont. It seems Keil wont erase chips that have both readout protection (RDP) and flash sector write-protect on.