wuart.c File Reference

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Detailed Description

Implementation of the Wireless UART Application.

This Application implements a wireless UART bridge.

Definition in file wuart.c.

Go to the source code of this file.

Defines
#define	CRC_SIZE   (sizeof(crc_t))
#define	ESC_NONE   (0)
#define	ESC_PATTERN   (2)
#define	ESC_TMO_1   (1)
#define	ESC_TMO_2   (3)
#define	NL   "\n\r"
#define	PAYLD_END   (UART_FRAME_SIZE - CRC_SIZE)
#define	PAYLD_SIZE   (PROT_WUART_PAYLD_SIZE)
#define	PAYLD_START   (PROT_WUART_HEADER_SIZE)
#define	UART_FRAME_SIZE
Typedefs
typedef uint16_t	crc_t
Enumerations
enum	wuart_state_t { CMD_MODE, DATA_MODE }
Functions
int	main (void)
	Main function of WUART application.
wuart_state_t	wuart_check_escape (uint8_t *cmd, uint8_t size)
void	wuart_init ()
	Initialize MCU ressources.
wuart_state_t	wuart_parse_at_command (char *cmd)
uint8_t *	wuart_usr_radio_receive_frame ()
uint8_t *	wuart_usr_radio_tx_done ()
Variables
volatile bool	chkrxbuf
bool	echo = false
wuart_buffer_t	rxbuf [2]
volatile uint8_t	rxbuf_idx = 0
static uint16_t	rxcnt
timer_hdl_t	tmr_uart
static uint16_t	txcnt
volatile bool	txpending
volatile wuart_state_t	wuart_state

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Define Documentation

#define CRC_SIZE   (sizeof(crc_t))

Number of bytes for CRC16

Definition at line 51 of file wuart.c.

#define ESC_NONE   (0)

escape state : none / normal data mode

Definition at line 63 of file wuart.c.

#define ESC_PATTERN   (2)

escape state : the +++ pattern was detected

Definition at line 69 of file wuart.c.

#define ESC_TMO_1   (1)

escape state : the first timeout had occured

Definition at line 66 of file wuart.c.

#define ESC_TMO_2   (3)

escape state : the second timeout had occured

Definition at line 72 of file wuart.c.

#define NL   "\n\r"

END of line delimitter

Definition at line 60 of file wuart.c.

#define PAYLD_END   (UART_FRAME_SIZE - CRC_SIZE)

Index of last payload byte

Definition at line 58 of file wuart.c.

#define PAYLD_SIZE   (PROT_WUART_PAYLD_SIZE)

Todo:

add a radio function for trx_identify()

Max. number of payload bytes per frame

Definition at line 49 of file wuart.c.

#define PAYLD_START   (PROT_WUART_HEADER_SIZE)

Index of first payload byte

Definition at line 56 of file wuart.c.

#define UART_FRAME_SIZE

Value:

(PROT_WUART_HEADER_SIZE +\
                           PAYLD_SIZE + CRC_SIZE )

Maximum frame size

Definition at line 53 of file wuart.c.

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Typedef Documentation

typedef uint16_t crc_t

Data type for CRC16 values

Definition at line 78 of file wuart.c.

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Enumeration Type Documentation

enum wuart_state_t

application states

Enumerator:

CMD_MODE	application is in command mode
DATA_MODE	application is in data mode

Definition at line 90 of file wuart.c.

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Function Documentation

int main

(

void

)

Main function of WUART application.

Definition at line 165 of file wuart.c.

wuart_state_t wuart_check_escape	(	uint8_t *	cmd,
		uint8_t	size
	)

check for the sequence for escape from the data mode

   [ no data on HIF ]+++[ no data on HIF ]
         |            |       |
         |            |       `- ESC_TMO_2
         |            `- ESC_PATTERN
         `- ESC_TMO_1
 

Definition at line 394 of file wuart.c.

void wuart_init

(

)

Initialize MCU ressources.

Definition at line 119 of file wuart.c.

wuart_state_t wuart_parse_at_command

(

char *

cmd

)

Process AT command

Definition at line 460 of file wuart.c.

uint8_t* wuart_usr_radio_receive_frame

(

)

Implementation of callback function usr_radio_receive_frame.

Definition at line 340 of file wuart.c.

uint8_t* wuart_usr_radio_tx_done

(

)

Implementation of callback function usr_radio_tx_done.

Definition at line 323 of file wuart.c.