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boards/ikea-tradfri: update documentation regarding LEUART and ICC-1

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Thomas Stilwell 2020-06-19 21:16:14 -05:00
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boards/ikea-tradfri/doc.txt
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@ -67,6 +67,7 @@ Pin 1 is on the top-left side with only 6 contacts.
| SPI | 0 | USART1 | MOSI: PD15, MISO: PD14, CLK: PD13 | | | SPI | 0 | USART1 | MOSI: PD15, MISO: PD14, CLK: PD13 | |
| Timer | 0 | TIMER0 + TIMER1 | | TIMER0 is used as prescaler (must be adjecent) | | Timer | 0 | TIMER0 + TIMER1 | | TIMER0 is used as prescaler (must be adjecent) |
| UART | 0 | USART0 | RX: PB15, TX: PB14 | Default STDIO output | | UART | 0 | USART0 | RX: PB15, TX: PB14 | Default STDIO output |
| LEUART | 0 | LEUART0 | RX: PB15, TX: PB14 | Alternate to using UART |
### User interface ### User interface
| Peripheral | Mapped to | Pin | Comments | | Peripheral | Mapped to | Pin | Comments |
@ -92,6 +93,14 @@ Pin 1 is on the top-left side with only 6 contacts.
## Board configuration ## Board configuration
### UART selection
By default the UART peripheral is used for the TX/RX pins, however the pinout
is compatible with LEUART also. You can switch from UART to LEUART by compiling
with `EFM32_USE_LEUART=1`.
**Note**: LEUART is not working on the ICC-1 module.
### Clock selection ### Clock selection
There are several clock sources that are available for the different There are several clock sources that are available for the different
peripherals. You are advised to read [AN0004.1] peripherals. You are advised to read [AN0004.1]