max7219 extern driver function

max7219 extern driver modules More...

Functions
uint8_t	max7219_set_reg (max7219_handle_t *handle, uint8_t reg, uint8_t *buf, uint16_t len)
	set the chip register More...

Detailed Description

max7219 extern driver modules

Function Documentation

max7219_set_reg()

uint8_t max7219_set_reg	(	max7219_handle_t *	handle,
		uint8_t	reg,
		uint8_t *	buf,
		uint16_t	len
	)

set the chip register

Parameters

[in]	*handle	pointer to a max7219 handle structure
[in]	reg	chip register address
[in]	*buf	pointer to a data buffer
[in]	len	data buffer length

Returns

status code

• 0 success
• 1 write failed
• 2 handle is NULL
• 3 handle is not initialized

Note

none

Definition at line 489 of file driver_max7219.c.