main.c File Reference

TWI bus explorer. More...

#include <neorv32.h>
#include <string.h>

Macros
User configuration
#define	BAUD_RATE   19200

Functions
void	scan_twi (void)
void	set_clock (void)
void	send_twi (void)
uint32_t	hexstr_to_uint (char *buffer, uint8_t length)
void	print_hex_byte (uint8_t data)
int	main ()

Detailed Description

TWI bus explorer.

Author

Stephan Nolting

Macro Definition Documentation

BAUD_RATE

#define BAUD_RATE   19200

UART BAUD rate

Function Documentation

hexstr_to_uint()

uint32_t hexstr_to_uint	(	char *	buffer,
		uint8_t	length )

Helper function to convert N hex chars string into uint32_t

Parameters

[in,out]	buffer	Pointer to array of chars to convert into number.
[in,out]	length	Length of the conversion string.

Returns

Converted number.

main()

int main

(

void

)

This program provides an interactive console to communicate with TWI devices.

Note

This program requires the UART to be synthesized.

Returns

0 if execution was successful

print_hex_byte()

void print_hex_byte

(

uint8_t

data

)

Print byte as hex chars via UART0.

Parameters

data	8-bit data to be printed as two hex chars.

scan_twi()

void scan_twi

(

void

)

Scan 7-bit TWI address space and print results

send_twi()

void send_twi

(

void

)

Read/write menu to transfer 1 byte from/to bus

set_clock()

void set_clock

(

void

)

TWI clock setup