Silicon Laboratories SiM3U1xx Manual do Utilizador descarregar pdf (Página 11)

AN758

Rev. 0.1 11

5.2. UART Functions

This section details the functions found in the gUART0.c file (AN758_USB_CDC\src\generated directory). This

file contains the hardware configuration for the SiM3U1xx device.

5.2.1. UART0_enter_default_mode_from_reset

UART0 hardware default configuration.

Syntax

void UART0_enter_default_mode_from_reset(void)

Parameters

None

Return Value

None

Description

This function set UART0 TX/RX default configuration as 115200 bps, 8-bit data width, 1 bit stop bit, no-parity

Example

UART0_enter_default_mode_from_reset();

5.2.2. uart_configuration

UART0 configuration setting.

Syntax

void uart_configuration(uint32_t baud_rate,uint8_t stop_bits,uint8_t parity,uint8_t

data_bits)

Parameters

baud_rate: baud rate

stop_bits: 0 - 1 stop bit; 1 - 1.5 stop bits; 2 - 2 stop bits

parity: 0 - none; 1 - odd; 2 - even; 3 - mark; 4 - space

data_bits: data bits(5,6,7,8 or 16)

Return Value

None

Description

This function set UART0 TX/RX baud rate, stop bits, parity and data bits.

Example

uart_configuration(115200,0,0,8);

5.2.3. uart_get_data

UART0 get data.

Syntax

uint32_t uart_get_data(uint8_t * data)

Parameters

data: pointer to receive data buffer

Return Value

The number of bytes received from UART

Description

This function gets data from UART FIFO to data buffer and return number of bytes received.

Example

uint32_t recv_count;

static uint8_t in_buff[64];

recv_count = uart_get_data(in_buff);

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