Data Structures
class	WeikaiChannel
	The WeikaiChannel class is used to implement all the virtual methods of the ESPHome uart::UARTComponent virtual class. More...

class	WeikaiComponent
	The WeikaiComponent class stores the information global to the WeiKai component and provides methods to set/access this information. More...

class	WeikaiGPIOPin
	Helper class to expose a WeiKai family IO pin as an internal GPIO pin. More...

class	WeikaiRegister
	WeikaiRegister objects acts as proxies to access remote register independently of the bus type. More...

class	WKRingBuffer
	This is an helper class that provides a simple ring buffers that works as a FIFO. More...

Enumerations
enum	RegType { REG = 0 , FIFO = 1 }

Functions
std::string	i2s (uint8_t val)
	convert an int to binary representation as C++ std::string

uint32_t	elapsed_ms (uint32_t &last_time)
	measure the time elapsed between two calls

const char *	p2s (uart::UARTParityOptions parity)
	Converts the parity enum value to a C string.

void	print_buffer (const uint8_t *data, size_t length)
	Display a buffer in hexadecimal format (32 hex values / line) for debug.

const char *	reg_to_str (int reg, bool page1)

void	print_buffer (std::vector< uint8_t > buffer)
	Hex converter to print/display a buffer in hexadecimal format (32 hex values / line).

Variables
constexpr size_t	XFER_MAX_SIZE = I2C_BUFFER_LENGTH
	XFER_MAX_SIZE defines the maximum number of bytes allowed during one transfer.

constexpr size_t	FIFO_SIZE = 256
	size of the internal WeiKai FIFO

constexpr size_t	RING_BUFFER_SIZE = FIFO_SIZE
	size of the ring buffer set to size of the FIFO

constexpr uint8_t	WKREG_GENA = 0x00
	Global Control Register - 00 0000.

constexpr uint8_t	GENA_C4EN = 1 << 3
	Channel 4 enable clock (0: disable, 1: enable)

constexpr uint8_t	GENA_C3EN = 1 << 2
	Channel 3 enable clock (0: disable, 1: enable)

constexpr uint8_t	GENA_C2EN = 1 << 1
	Channel 2 enable clock (0: disable, 1: enable)

constexpr uint8_t	GENA_C1EN = 1 << 0
	Channel 1 enable clock (0: disable, 1: enable)

constexpr uint8_t	WKREG_GRST = 0x01
	Global Reset Register - 00 0001.

constexpr uint8_t	GRST_C4RST = 1 << 3
	Channel 4 soft reset (0: not reset, 1: reset)

constexpr uint8_t	GRST_C3RST = 1 << 2
	Channel 3 soft reset (0: not reset, 1: reset)

constexpr uint8_t	GRST_C2RST = 1 << 1
	Channel 2 soft reset (0: not reset, 1: reset)

constexpr uint8_t	GRST_C1RST = 1 << 0
	Channel 1 soft reset (0: not reset, 1: reset)

constexpr uint8_t	WKREG_GMUT = 0x02
	Global Master channel control register (not used) - 000010.

constexpr uint8_t	WKREG_GIER = 0x10
	Global interrupt register (not used) - 01 0000.

constexpr uint8_t	WKREG_GIFR = 0x11
	Global interrupt flag register (not used) 01 0001.

constexpr uint8_t	WKREG_GPDIR = 0x21
	Global GPIO direction register - 10 0001.

constexpr uint8_t	WKREG_GPDAT = 0x31
	Global GPIO data register - 11 0001.

constexpr uint8_t	WKREG_SPAGE = 0x03
	Global Page register c0/c1 0011.

constexpr uint8_t	WKREG_SCR = 0x04
	Serial Control Register - c0/c1 0100.

constexpr uint8_t	SCR_TXEN = 1 << 1
	transmission control (0: enable, 1: disable)

constexpr uint8_t	SCR_RXEN = 1 << 0
	receiving control (0: enable, 1: disable)

constexpr uint8_t	WKREG_LCR = 0x05
	Line Configuration Register - c0/c1 0101.

constexpr uint8_t	LCR_PAEN = 1 << 3
	Parity enable (0: no check, 1: check)

constexpr uint8_t	LCR_PAR_F0 = 0 << 1
	Parity force 0.

constexpr uint8_t	LCR_PAR_ODD = 1 << 1
	Parity odd.

constexpr uint8_t	LCR_PAR_EVEN = 2 << 1
	Parity even.

constexpr uint8_t	LCR_PAR_F1 = 3 << 1
	Parity force 1.

constexpr uint8_t	LCR_STPL = 1 << 0
	Stop length (0: 1 bit, 1: 2 bits)

constexpr uint8_t	WKREG_FCR = 0x06
	FIFO Control Register - c0/c1 0110.

constexpr uint8_t	FCR_TFEN = 1 << 3
	Transmitter FIFO enable.

constexpr uint8_t	FCR_RFEN = 1 << 2
	Receiver FIFO enable.

constexpr uint8_t	FCR_TFRST = 1 << 1
	Transmitter FIFO reset.

constexpr uint8_t	FCR_RFRST = 1 << 0
	Receiver FIFO reset.

constexpr uint8_t	WKREG_SIER = 0x07
	Serial Interrupt Enable Register (not used) - c0/c1 0111.

constexpr uint8_t	WKREG_SIFR = 0x08
	Serial Interrupt Flag Register (not used) - c0/c1 1000.

constexpr uint8_t	WKREG_TFCNT = 0x09
	Transmitter FIFO Count - c0/c1 1001.

constexpr uint8_t	WKREG_RFCNT = 0x0A
	Receiver FIFO count - c0/c1 1010.

constexpr uint8_t	WKREG_FSR = 0x0B
	FIFO Status Register - c0/c1 1011.

constexpr uint8_t	FSR_RFOE = 1 << 7
	Receiver FIFO Overflow Error (0: no OE, 1: OE)

constexpr uint8_t	FSR_RFLB = 1 << 6
	Receiver FIFO Line Break (0: no LB, 1: LB)

constexpr uint8_t	FSR_RFFE = 1 << 5
	Receiver FIFO Frame Error (0: no FE, 1: FE)

constexpr uint8_t	FSR_RFPE = 1 << 4
	Receiver Parity Error (0: no PE, 1: PE)

constexpr uint8_t	FSR_RFDAT = 1 << 3
	Receiver FIFO count (0: empty, 1: not empty)

constexpr uint8_t	FSR_TFDAT = 1 << 2
	Transmitter FIFO count (0: empty, 1: not empty)

constexpr uint8_t	FSR_TFFULL = 1 << 1
	Transmitter FIFO full (0: not full, 1: full)

constexpr uint8_t	FSR_TBUSY = 1 << 0
	Transmitter busy (0 nothing to transmit, 1: transmitter busy sending)

constexpr uint8_t	WKREG_LSR = 0x0C
	Line Status Register (not used - using FIFO)

constexpr uint8_t	WKREG_FDAT = 0x0D
	FIFO Data Register (not used - does not seems to work)

constexpr uint8_t	WKREG_BRH = 0x04
	Baud rate configuration register: high byte - c0/c1 0100.

constexpr uint8_t	WKREG_BRL = 0x05
	Baud rate configuration register: low byte - c0/c1 0101.

constexpr uint8_t	WKREG_BRD = 0x06
	Baud rate configuration register decimal part - c0/c1 0110.

constexpr uint8_t	WKREG_RFI = 0x07
	Receive FIFO Interrupt trigger configuration (not used) - c0/c1 0111.

constexpr uint8_t	WKREG_TFI = 0x08
	Transmit FIFO interrupt trigger configuration (not used) - c0/c1 1000.

Enumeration Type Documentation

◆ RegType

enum esphome::weikai::RegType

Enumerator
REG
FIFO

Definition at line 79 of file weikai.cpp.

Function Documentation

◆ elapsed_ms()

uint32_t esphome::weikai::elapsed_ms ( uint32_t & last_time )

measure the time elapsed between two calls

Parameters

last_time time of the previous call

Returns: the elapsed time in milliseconds

Definition at line 23 of file weikai.cpp.

◆ i2s()

std::string esphome::weikai::i2s ( uint8_t val )

inline

convert an int to binary representation as C++ std::string

Parameters

val	integer to convert

Returns: a std::string

Definition at line 16 of file weikai.cpp.

◆ p2s()

const char * esphome::weikai::p2s ( uart::UARTParityOptions parity )

Converts the parity enum value to a C string.

Parameters

parity enum

Returns: the string

Definition at line 32 of file weikai.cpp.

◆ print_buffer()

void esphome::weikai::print_buffer	(	const uint8_t *	data,
		size_t	length )

Display a buffer in hexadecimal format (32 hex values / line) for debug.

Definition at line 47 of file weikai.cpp.

◆ reg_to_str()

const char * esphome::weikai::reg_to_str	(	int	reg,
		bool	page1 )

Definition at line 69 of file weikai.cpp.

Variable Documentation

◆ FIFO_SIZE

size_t esphome::weikai::FIFO_SIZE = 256

constexpr

size of the internal WeiKai FIFO

Definition at line 40 of file weikai.h.

◆ RING_BUFFER_SIZE

size_t esphome::weikai::RING_BUFFER_SIZE = FIFO_SIZE

constexpr

size of the ring buffer set to size of the FIFO

Definition at line 43 of file weikai.h.

◆ XFER_MAX_SIZE

size_t esphome::weikai::XFER_MAX_SIZE = I2C_BUFFER_LENGTH

constexpr

XFER_MAX_SIZE defines the maximum number of bytes allowed during one transfer.

Definition at line 34 of file weikai.h.

Data Structures

Enumerations

Functions

Variables

Enumeration Type Documentation

◆ RegType

Function Documentation

◆ elapsed_ms()

◆ i2s()

◆ p2s()

◆ print_buffer()

◆ reg_to_str()

Variable Documentation

◆ FIFO_SIZE

◆ RING_BUFFER_SIZE

◆ XFER_MAX_SIZE