Simple makefiles and examples for using the EFM8 series of microcontrollers with SDCC.
- blink: blinks LEDs on pins P2.2 and P2.3.
Copy one of the example projects, then simply place your source code inside
the src directory and add your code to the C_SRC variable inside the
makefile. You can then run make to build your code.
To provide multiple variations of a projects for different boards/mcu, you
can use the boards directory to make different targets. By default, the
makefile will use the boards/default target. If you want to make another
targets create a new directory in the boards folder and make a config.mk
file inside of it with the settings for that build.
To build different board targets, you can call make and set the BORADS
variable:
make BOARD=defaultTo program you can use Silicon Labs USB debug adapter. You can buy this from digikey/mouser for about 35$, or from ebay/aliexpress for about 10$.
To use the command line tools to flash hex files, you will first need to download Simplicity Studio. Then from simplicity studio install the 8051 toolchain and flashing devices. Once installed, you will need to provide the makefiles with the path where you installed Simplicity Studio, for example:
# Inside makefile
SIMPLICITY_STUDIO_PATH = $(HOME)/local/simplicity_studio/SimplicityStudio_v4You should then be able to use the targets provided by the makefiles to
flash from the command line. First to list the connected devices use the
program-list target:
$ make program-list
deviceCount = 1
device (EC3005481E8) {
adapterLabel = USB Debug Adapter
SerialNo = EC3005481E8
targetInterface = c2
Name = EFM8UB20F32G-QFP32
Type = MCU
Family = 8051
HardwareID = 0x28
DerivativeID = 0x64
HardwareRev = 0x0
DerivativeRev = 0x6
Unsupported = 0
Indeterminate = 0
Connected = 0
Locked = 0
}From this listing you can see the serial numbers of the connected devices,
EC3005481E8 in this example. Once you know the serial number, you can use
the program-efm8 target to flash it:
make program-efm8 SERIAL_NUM=EC3005481E8