OSC - 12 MHz
PIO1_6 - UART Rx
PIO1_7 - UART Tx
PIO0_11 - CT32B0_MAT3 - DALI TX
PIO1_0 - CT32B1_CAP0 - DALI RX - enable internal pull-up
PIO2_4 - LED - heartbeat
PIO2_5 - LED - serial activ
PIO2_6 - LED - DALI activ
For details see chapter 13.5.15 UART Fractional Divider Register in UM10398 User Manual.
UART_PCLK is at 48 MHz (somehow it was not possible to set UARTCLKDIV to 24 MHz)
Settings for 115,200 Baud:
| Register | Value | Restriction |
|---|---|---|
| DIVADDVAL | 2 | 0 .. 14, < MULVAL |
| MULVAL | 15 | 0 .. 15 |
| DLM | 0 | 0 .. 15 |
| DLL | 23 | 3 .. 15 |
calculated baudrate: 115089 Baud
Settings for 500,000 Baud:
| Register | Value | Restriction |
|---|---|---|
| DIVADDVAL | 1 | 0 .. 14, < MULVAL |
| MULVAL | 2 | 0 .. 15 |
| DLM | 0 | 0 .. 15 |
| DLL | 4 | 3 .. 15 |
calculated baudrate: 500000 Baud
DALI Heartbeat LED. When the DALI Bus is idle (high) the blink frequency is faster (approximately 10 Hz). Otherwise frequency is low (approximately 1 Hz).
Rx Indicates that a serial command was received and processed. The blink duration is a fixed time period and does not correlate with processor activity.
Tx Indicates that a DALI frame was received and processed. The blink duration is a fixed time period and does not correlate with processor activity.