MSP430 x1xx UART configuration, CPU level. More...

Detailed Description

MSP430 x1xx UART configuration, CPU level.

The MSP430 x1xx has two USART peripherals which both can be operated in UART mode. Each is connected to a fixed GPIO for RXD and TXD, respectively. Hence, there is not much left for the board to configure anyway, so we just prepare UART configurations at CPU level for the board to refer to. The unused configuration(s) will be garbage collected by the linker.

Definition at line 143 of file periph_cpu.h.

#include <periph_cpu.h>

Data Fields
msp430_usart_params_t	usart_params
	The USART params.

uint8_t	tx_enable_mask
	The bitmask to write to the SFR register to enable the USART device in UART mode with TX enabled.

uint8_t	rxtx_enable_mask
	The bitmask to write to the SFR register to enable the USART device in UART mode with RX+TX enabled.

gpio_t	rxd
	RXD pin.

gpio_t	txd
	TXD pin.

Field Documentation

◆ rxd

gpio_t msp430_usart_uart_params_t::rxd

RXD pin.

Definition at line 164 of file periph_cpu.h.

◆ rxtx_enable_mask

uint8_t msp430_usart_uart_params_t::rxtx_enable_mask

The bitmask to write to the SFR register to enable the USART device in UART mode with RX+TX enabled.

The RX and TX part of the UART can be enabled individually. But since there is no way to enable only RX with RIOT's UART API and this is an internal structure anyway, we optimize this to avoid an OR function to compile tx_enable_mask and rx_enable_mask.

Definition at line 163 of file periph_cpu.h.

◆ tx_enable_mask

uint8_t msp430_usart_uart_params_t::tx_enable_mask

The bitmask to write to the SFR register to enable the USART device in UART mode with TX enabled.

Note: Sadly, the layout of the SFR registers corresponding to the USART peripherals differs.

Definition at line 152 of file periph_cpu.h.

◆ txd

gpio_t msp430_usart_uart_params_t::txd

TXD pin.

Definition at line 165 of file periph_cpu.h.

◆ usart_params

msp430_usart_params_t msp430_usart_uart_params_t::usart_params

The USART params.

Definition at line 144 of file periph_cpu.h.

The documentation for this struct was generated from the following file:

cpu/msp430/include/x1xx/periph_cpu.h