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Feature: transmit_byte for transmitting a single byte

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Feature: `all_on` and `all_off` commands for testing
Optimization: marked functions inline
Optimization: inline function for transmitting a single bit
This commit is contained in:
Derisis13
2022-03-11 08:31:40 +01:00
parent 9a326de094
commit 51921de344
3 changed files with 72 additions and 26 deletions
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37
PT6302.h
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@@ -1,3 +1,4 @@
#pragma once
/*
* AT-VFD
* Copyright (C) 2022 László Párkányi
@@ -18,15 +19,13 @@
* USA
*/
#ifndef _PT6302_H_
#define _PT6302_H_
#define DISPLAY_DIGITS 12
/* PT6302 timing constants, all in usec */
static const uint8_t TCW = 1; //CLKB pulse width
static const uint8_t TDOFF = 16; //Data processing time
static const uint8_t DTCSH = 16; //time difference between tDOFF and tCSH
static const uint8_t TCSH = 32; //Chip select hold time
static const uint8_t TPRZ = 100; //VDD rise time
static const uint8_t TWRSTB = 1; //RSTB pulse width
@@ -49,6 +48,19 @@ enum RAM_types{
* ------------------------------------------------------------- */
void PT6302_startup (void);
/* --------------------------------
* Transmits the LSB of data
* Handles communication except CSB
* --------------------------------- */
static inline void transmit_bit(uint8_t data);
/* ------------------------------------------------
* Transmits one character (data)
* Handles the entire communication
* this is (mostly) intended to be used by wrappers
* ------------------------------------------------ */
void transmit_byte(uint8_t data);
/* -------------------------------------------------------------------------------
* Transmits size byte of data through the VFD controller's interface from payload
* Handles CLKB, CSB and timing constraints
@@ -59,14 +71,14 @@ void transmit_bytes (const uint8_t *payload, uint8_t size);
* Sets GP1 and GP2 to the values given in the function call
* Handles the entire communication
* --------------------------------------------------------- */
void set_ports (uint8_t gp1, uint8_t gp2);
inline void set_ports (uint8_t gp1, uint8_t gp2);
/* ---------------------------------------------------------------------------------------
* Sets the number of digit_count the VFD has
* digit_count below 9 are interpreted as 9 and digit_count above 16 are interpreted as 16
* Handles the entire communication
* --------------------------------------------------------------------------------------- */
void set_digits(uint8_t digit_count);
inline void set_digits(uint8_t digit_count);
/* -----------------------------------------------------------
* Sets duty cycle of controlled VFD
@@ -74,7 +86,7 @@ void set_digits(uint8_t digit_count);
* duty = (brightness + 8)/16 (valid between 8/16 and 15/16)
* Handles the entire communication
* ----------------------------------------------------------- */
void set_duty (uint8_t brightness);
inline void set_duty (uint8_t brightness);
/* ------------------------------------------------------------------------------------------
* Set the content of the DCRAM - this will display a character from the CGROM/RAM at address
@@ -108,4 +120,15 @@ void set_CGRAM (uint8_t address, const uint8_t *data, uint8_t size);
* --------------------------------------------------------------------------------------- */
void set_ADRAM(uint8_t address, const uint8_t* data, uint8_t size);
#endif //_PT6302_H_
/* -----------------------------------------
* Turn all outputs of the VFD controller on
* This is primarily used for testing
* Handles the entire communication
* ----------------------------------------- */
inline void all_on(void);
/* ------------------------------------------
* Turn all outputs of the VFD controller off
* Handles the entire communication
* ------------------------------------------ */
inline void all_off(void);