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)

void	check_claimed (void)

void	toggle_mack (void)

uint32_t	hexstr_to_uint (char *buffer, uint8_t length)

void	print_hex_byte (uint8_t data)

int	main ()

Variables
int	bus_claimed

Detailed Description

TWI bus explorer.

Author: Stephan Nolting

Macro Definition Documentation

◆ BAUD_RATE

#define BAUD_RATE 19200

UART BAUD rate

Function Documentation

◆ check_claimed()

void check_claimed ( void )

Check if the TWI is currently claimed.

◆ 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 speed menu

◆ toggle_mack()

void toggle_mack ( void )

Toggle MACK (ACK generated by controller/host)

Macros

Functions

Variables