usart.c File Reference

#include <usart.h>
#include <hal.h>
#include <systick.h>

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Macros
#define	_USART2   NULL

Functions
void	usart_foreach (void(*fn)(const usart_dev *))
	Call a function on each USART. More...
void	usart_init (const usart_dev *dev)
	Initialize a serial port. More...
void	usart_setup (const usart_dev *dev, uint32_t baudRate, uint16_t wordLength, uint16_t stopBits, uint16_t parity, uint16_t mode, uint16_t hardwareFlowControl)
	Configure a serial port's baud rate. More...
uint32_t	usart_tx (const usart_dev *dev, const uint8_t *buf, uint32_t len)
	Nonblocking USART transmit. More...
void	usart_putudec (const usart_dev *dev, uint32_t val)
	Transmit an unsigned integer to the specified serial port in decimal format. More...
static void	usart_rx_irq (const usart_dev *dev)
static void	usart_tx_irq (const usart_dev *dev)
void	USART1_IRQHandler (void)
void	USART3_IRQHandler (void)

Variables
static ring_buffer usart1_txrb	IN_CCM
static const usart_dev	usart1
const usart_dev *const	_USART1 = &usart1
static const usart_dev	usart3
const usart_dev *const	_USART3 = &usart3
const usart_dev *const	UARTS []
uint32_t	us_ticks

Macro Definition Documentation

_USART2

#define _USART2   NULL

Definition at line 55 of file usart.c.

Function Documentation

USART1_IRQHandler()

void USART1_IRQHandler

(

void

)

Definition at line 362 of file usart.c.

Referenced by usart_set_callback().

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USART3_IRQHandler()

void USART3_IRQHandler

(

void

)

Definition at line 376 of file usart.c.

Referenced by usart_set_callback().

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usart_foreach()

void usart_foreach

(

void(*)(const usart_dev *)

fn

)

Call a function on each USART.

Parameters

fn	Function to call.

Definition at line 163 of file usart.c.

Referenced by usart_disable(), and usart_disable_all().

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usart_init()

void usart_init

(

const usart_dev *

dev

)

Initialize a serial port.

Parameters

dev	Serial port to be initialized

Definition at line 187 of file usart.c.

Referenced by F4Light::UARTDriver::begin().

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usart_putudec()

void usart_putudec	(	const usart_dev *	dev,
		uint32_t	val
	)

Transmit an unsigned integer to the specified serial port in decimal format.

This function blocks until the integer's digits have been completely transmitted.

Parameters

dev	Serial port to send on
val	Number to print

Definition at line 282 of file usart.c.

Referenced by usart_disable_all().

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usart_rx_irq()

static void usart_rx_irq ( const usart_dev *  dev )

inlinestatic

Definition at line 301 of file usart.c.

Referenced by USART1_IRQHandler(), and USART3_IRQHandler().

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usart_setup()

void usart_setup	(	const usart_dev *	dev,
		uint32_t	baudRate,
		uint16_t	wordLength,
		uint16_t	stopBits,
		uint16_t	parity,
		uint16_t	mode,
		uint16_t	hardwareFlowControl
	)

Configure a serial port's baud rate.

Parameters

dev	Serial port to be configured
baudRate	Baud rate for transmit/receive.
wordLength	Specifies the number of data bits transmitted or received in a frame. This parameter can be a value of USART_Word_Length
stopBits	Specifies the number of stop bits transmitted. This parameter can be a value of USART_Stop_Bits
parity	Specifies the parity mode. This parameter can be a value of USART_Parity
mode	Specifies wether the Receive or Transmit mode is enabled or disabled. This parameter can be a value of USART_Mode
hardwareFlowControl	Specifies wether the hardware flow control mode is enabled or disabled. This parameter can be a value of USART_Hardware_Flow_Control

Definition at line 199 of file usart.c.

Referenced by F4Light::UARTDriver::begin().

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usart_tx()

uint32_t usart_tx	(	const usart_dev *	dev,
		const uint8_t *	buf,
		uint32_t	len
	)

Nonblocking USART transmit.

Parameters

dev	Serial port to transmit over
buf	Buffer to transmit
len	Maximum number of bytes to transmit

Returns

Number of bytes transmitted

Definition at line 258 of file usart.c.

Referenced by usart_disable_all(), usart_putc(), and F4Light::UARTDriver::write().

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usart_tx_irq()

static void usart_tx_irq ( const usart_dev *  dev )

inlinestatic

Definition at line 334 of file usart.c.

Referenced by USART1_IRQHandler(), and USART3_IRQHandler().

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Variable Documentation

_USART1

const usart_dev* const _USART1 = &usart1

USART1 device

Definition at line 34 of file usart.c.

_USART3

const usart_dev* const _USART3 = &usart3

USART3 device

Definition at line 74 of file usart.c.

IN_CCM

usart_state u3state IN_CCM

static

Definition at line 18 of file usart.c.

UARTS

const usart_dev* const UARTS[]

Initial value:

= {
    NULL,
    &usart1,



    NULL, 

    &usart3,



    NULL,




    NULL,




    NULL,

    
}

Definition at line 136 of file usart.c.

Referenced by F4Light::UARTDriver::begin().

us_ticks

uint32_t us_ticks

Definition at line 10 of file stopwatch.c.

Referenced by usart_foreach().

usart1

const usart_dev usart1

static

Initial value:

= {
    .USARTx = USART1,
    .clk = RCC_APB2Periph_USART1,
    .txrb = &usart1_txrb,
    .rxrb = &usart1_rxrb,
    .state = &u1state,
    .irq = USART1_IRQn,
    .rx_pin = BOARD_USART1_RX_PIN,
    .tx_pin = BOARD_USART1_TX_PIN,
    .gpio_af = GPIO_AF_USART1
}

Definition at line 22 of file usart.c.

usart3

const usart_dev usart3

static

Initial value:

= {
    .USARTx = USART3,
    .clk = RCC_APB1Periph_USART3,
    .txrb = &usart3_txrb,
    .rxrb = &usart3_rxrb,
    .state = &u3state,
    .irq = USART3_IRQn,
    .rx_pin = BOARD_USART3_RX_PIN,
    .tx_pin = BOARD_USART3_TX_PIN,
    .gpio_af = GPIO_AF_USART3
}

Definition at line 62 of file usart.c.