Eval¶

Relatively big MCU; Standard periphery can be tested within a single bringup run. Protocol can be added to biwak/arena release.

• I2C has an issue that some times the board has to wait at bootup quite long time till i2c eeprom is functional.
• SPI has an issue that some times the board has to wait at bootup quite long time till spi flash is functional.
• Code cleanup; does the code still work; e.g. Timers. Complete disfunctionality would not be seen some times.
• Want to develop something with nice debug output. Bootloader was a little bit nasty.

No further use?

• Alarm clock
• CANBuzzer
• Reference RTC clock
  • CANSwitches have PWM output but no RTC. For light switches this compination makes sense. CANDis could do this. At least in combination with buzzers nice.

STM32L433CCU6; 48pins; 256KB Flash; DS

• CAN
• USB
• Uart
• SPI-Flash
• I2C-EEPROM; 80Bytes + ?KB
• I2C-Connector
• Buzzer
• LEDs
• Small LCD? waste of pins?
• RTC
• PWM-LED; Golden Dragon?
• ADC (fixed resistors; 1/4 VDD)
• Button

PA11 - CAN1_RX USB_DM
PA12 - CAN1_TX USB_DP

PB8 - CAN1_RX
PB9 - CAN1_TX