STMicro has given me NUCLEO-L476RG and NUCLEO-F401RE with expansion boards for free at trade shows in year 2018. Thanks a lot to STMicro!
Toolchain:
NUCLEO-F401RE board
- DCT Type-II implementation on CMSIS-DSP (also works on L4) including a zigzag scan utility function.
NUCLEO-F401RE board
- Thermography (infrared array sensor) and rock-paper-scissors recogniton with Keras/TensorFlow
- X-CUBE-AI (ML inference on MCU with 2D images from an infrared array sensor)
- Eddystone beacon ... the source code is generated by CubeMX
- SensorDemo ... the source code is generated by CubeMX
NUCLEO-L476RG board
- HelloWorld
- GPIO_Interrupt
- Clock
- CAN
- MEMSMIC(MEMS mic expansion board)
- ADC with DMA
- DAC with triangular wave and sine wave
- Mic->ADC->DAC pipeline
- Sound Effector
- Chirp compression
STM32F4 Discovery board
I managed to support printf on USART2.
Physical configuration:
STM32F407
+------------+
X 5V |
GND ----- GND FTDI |
PA3(RX) ----- TX USB-UART ===== USB ======> PC
PA2(TX) ----- RX converter |
+------------+
Include the following snippet in main.c to support printf:
int _write(int file, char *pbuf, int len)
{
HAL_UART_Transmit(&huart2, (uint8_t *)pbuf, len, 1000);
return len;
}
PWM output (100Hz, 50% duty) to PA8:
