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ECE3849/Crystalfontz128x128_ST7735.c
Andy Killorin 35d1ee2387
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2025-03-20 11:20:21 -04:00

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/* --COPYRIGHT--,BSD
* Copyright (c) 2015, Texas Instruments Incorporated
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of Texas Instruments Incorporated nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* --/COPYRIGHT--*/
//*****************************************************************************
//
// Crystalfontz128x128.c - Display driver for the Crystalfontz
// 128x128 display with ST7735 controller.
//
// Modified by Gene Bogdanov 8/30/2017
//
//*****************************************************************************
#include "Crystalfontz128x128_ST7735.h"
#include <stdint.h>
#include <stdbool.h>
#include "grlib/grlib.h"
#include "HAL_EK_TM4C1294XL_Crystalfontz128x128_ST7735.h"
uint8_t Lcd_Orientation;
uint16_t Lcd_ScreenWidth, Lcd_ScreenHeigth;
uint8_t Lcd_PenSolid, Lcd_FontSolid, Lcd_FlagRead;
uint16_t Lcd_TouchTrim;
uint16_t Lcd_buffer[LCD_VERTICAL_MAX][LCD_HORIZONTAL_MAX] = {0}; // Gene Bogdanov: LCD frame buffer in RAM
static void Crystalfontz128x128_Flush(void *pvDisplayData);
static uint32_t Crystalfontz128x128_ColorTranslate(void *pvDisplayData, uint32_t ulValue);
//*****************************************************************************
//
//! Initializes the display driver.
//!
//! This function initializes the ST7735 display controller on the panel,
//! preparing it to display data.
//!
//! \return None.
//
//*****************************************************************************
void Crystalfontz128x128_Init(void)
{
HAL_LCD_PortInit();
HAL_LCD_SpiInit();
HAL_LCD_writeCommand(CM_SLPOUT);
HAL_LCD_delay(120000);
HAL_LCD_writeCommand(CM_GAMSET);
HAL_LCD_writeData(0x04);
HAL_LCD_writeCommand(CM_SETPWCTR);
HAL_LCD_writeData(0x0A);
HAL_LCD_writeData(0x14);
HAL_LCD_writeCommand(CM_SETSTBA);
HAL_LCD_writeData(0x0A);
HAL_LCD_writeData(0x00);
HAL_LCD_writeCommand(CM_COLMOD);
HAL_LCD_writeData(0x05);
HAL_LCD_delay(10);
HAL_LCD_writeCommand(CM_MADCTL);
HAL_LCD_writeData(CM_MADCTL_BGR);
HAL_LCD_writeCommand(CM_NORON);
Lcd_ScreenWidth = LCD_HORIZONTAL_MAX;
Lcd_ScreenHeigth = LCD_VERTICAL_MAX;
Lcd_PenSolid = 0;
Lcd_FontSolid = 1;
Lcd_FlagRead = 0;
Lcd_TouchTrim = 0;
Crystalfontz128x128_Flush(0); // Gene Bogdanov: flush the RAM buffer instead of filling LCD memory with fixed values
HAL_LCD_delay(10);
HAL_LCD_writeCommand(CM_DISPON);
}
void Crystalfontz128x128_SetDrawFrame(uint32_t x0, uint32_t y0, uint32_t x1, uint32_t y1)
{
switch (Lcd_Orientation) {
case 0:
x0 += 2;
y0 += 3;
x1 += 2;
y1 += 3;
break;
case 1:
x0 += 3;
y0 += 2;
x1 += 3;
y1 += 2;
break;
case 2:
x0 += 2;
y0 += 1;
x1 += 2;
y1 += 1;
break;
case 3:
x0 += 1;
y0 += 2;
x1 += 1;
y1 += 2;
break;
default:
break;
}
HAL_LCD_writeCommand(CM_CASET);
HAL_LCD_writeData((uint8_t)(x0 >> 8));
HAL_LCD_writeData((uint8_t)(x0));
HAL_LCD_writeData((uint8_t)(x1 >> 8));
HAL_LCD_writeData((uint8_t)(x1));
HAL_LCD_writeCommand(CM_RASET);
HAL_LCD_writeData((uint8_t)(y0 >> 8));
HAL_LCD_writeData((uint8_t)(y0));
HAL_LCD_writeData((uint8_t)(y1 >> 8));
HAL_LCD_writeData((uint8_t)(y1));
}
//*****************************************************************************
//
//! Sets the LCD Orientation.
//!
//! \param orientation is the desired orientation for the LCD. Valid values are:
//! - \b LCD_ORIENTATION_UP,
//! - \b LCD_ORIENTATION_LEFT,
//! - \b LCD_ORIENTATION_DOWN,
//! - \b LCD_ORIENTATION_RIGHT,
//!
//! This function sets the orientation of the LCD
//!
//! \return None.
//
//*****************************************************************************
void Crystalfontz128x128_SetOrientation(uint8_t orientation)
{
Lcd_Orientation = orientation;
HAL_LCD_writeCommand(CM_MADCTL);
switch (Lcd_Orientation) {
case LCD_ORIENTATION_UP:
HAL_LCD_writeData(CM_MADCTL_MX | CM_MADCTL_MY | CM_MADCTL_BGR);
break;
case LCD_ORIENTATION_LEFT:
HAL_LCD_writeData(CM_MADCTL_MY | CM_MADCTL_MV | CM_MADCTL_BGR);
break;
case LCD_ORIENTATION_DOWN:
HAL_LCD_writeData(CM_MADCTL_BGR);
break;
case LCD_ORIENTATION_RIGHT:
HAL_LCD_writeData(CM_MADCTL_MX | CM_MADCTL_MV | CM_MADCTL_BGR);
break;
}
}
//*****************************************************************************
//
//! Draws a pixel on the screen.
//!
//! \param pvDisplayData is a pointer to the driver-specific data for this
//! display driver.
//! \param lX is the X coordinate of the pixel.
//! \param lY is the Y coordinate of the pixel.
//! \param ulValue is the color of the pixel.
//!
//! This function sets the given pixel to a particular color. The coordinates of
//! the pixel are assumed to be within the extents of the display.
//!
//! Gene Bogdanov: Added local frame buffer.
//!
//! \return None.
//
//*****************************************************************************
static void Crystalfontz128x128_PixelDraw(void *pvDisplayData, int32_t lX, int32_t lY,
uint32_t ulValue)
{
Lcd_buffer[lY][lX] = ulValue;
}
//*****************************************************************************
//
//! Draws a horizontal sequence of pixels on the screen.
//!
//! \param pvDisplayData is a pointer to the driver-specific data for this
//! display driver.
//! \param lX is the X coordinate of the first pixel.
//! \param lY is the Y coordinate of the first pixel.
//! \param lX0 is sub-pixel offset within the pixel data, which is valid for 1
//! or 4 bit per pixel formats.
//! \param lCount is the number of pixels to draw.
//! \param lBPP is the number of bits per pixel; must be 1, 4, or 8.
//! \param pucData is a pointer to the pixel data. For 1 and 4 bit per pixel
//! formats, the most significant bit(s) represent the left-most pixel.
//! \param pucPalette is a pointer to the palette used to draw the pixels.
//!
//! This function draws a horizontal sequence of pixels on the screen, using
//! the supplied palette. For 1 bit per pixel format, the palette contains
//! pre-translated colors; for 4 and 8 bit per pixel formats, the palette
//! contains 24-bit RGB values that must be translated before being written to
//! the display.
//!
//! \return None.
//
//*****************************************************************************
static void Crystalfontz128x128_PixelDrawMultiple(void *pvDisplayData, int32_t lX,
int32_t lY, int32_t lX0, int32_t lCount,
int32_t lBPP,
const uint8_t *pucData,
const uint8_t *pucPalette)
{
uint32_t Data, rgb, native;
uint16_t *pWrite = &Lcd_buffer[lY][lX]; // pointer to the write location in Lcd_buffer[]
//
// Determine how to interpret the pixel data based on the number of bits
// per pixel.
//
switch(lBPP)
{
// The pixel data is in 1 bit per pixel format
case 1:
{
// Loop while there are more pixels to draw
while(lCount > 0)
{
// Get the next byte of image data
Data = *pucData++;
// Loop through the pixels in this byte of image data
for(; (lX0 < 8) && lCount; lX0++, lCount--)
{
// Draw this pixel in the appropriate color
*pWrite++ = ((uint32_t *)pucPalette)[(Data >> (7 - lX0)) & 1];
}
// Start at the beginning of the next byte of image data
lX0 = 0;
}
// The image data has been drawn
break;
}
// The pixel data is in 4 bit per pixel format
case 4:
{
// Loop while there are more pixels to draw. "Duff's device" is
// used to jump into the middle of the loop if the first nibble of
// the pixel data should not be used. Duff's device makes use of
// the fact that a case statement is legal anywhere within a
// sub-block of a switch statement. See
// http://en.wikipedia.org/wiki/Duff's_device for detailed
// information about Duff's device.
switch(lX0 & 1)
{
case 0:
while(lCount)
{
// Get the upper nibble of the next byte of pixel data
// and extract the corresponding entry from the palette
Data = (*pucData >> 4);
rgb = *(uint32_t *)(pucPalette + 3*Data);
native = Crystalfontz128x128_ColorTranslate(pvDisplayData, rgb);
// Write to LCD screen
*pWrite++ = native;
// Decrement the count of pixels to draw
lCount--;
// See if there is another pixel to draw
if(lCount)
{
case 1:
// Get the lower nibble of the next byte of pixel
// data and extract the corresponding entry from
// the palette
Data = (*pucData++ & 15);
rgb = *(uint32_t *)(pucPalette + 3*Data);
native = Crystalfontz128x128_ColorTranslate(pvDisplayData, rgb);
// Write to LCD screen
*pWrite++ = native;
// Decrement the count of pixels to draw
lCount--;
}
}
}
// The image data has been drawn.
break;
}
// The pixel data is in 8 bit per pixel format
case 8:
{
// Loop while there are more pixels to draw
while(lCount--)
{
// Get the next byte of pixel data and extract the
// corresponding entry from the palette
Data = *pucData++;
rgb = *(uint32_t *)(pucPalette + 3*Data);
native = Crystalfontz128x128_ColorTranslate(pvDisplayData, rgb);
// Write to LCD screen
*pWrite++ = native;
}
// The image data has been drawn
break;
}
//
// We are being passed data in the display's native format. Merely
// write it directly to the display. This is a special case which is
// not used by the graphics library but which is helpful to
// applications which may want to handle, for example, JPEG images.
//
case 16:
{
uint16_t usData;
// Loop while there are more pixels to draw.
while(lCount--)
{
// Get the next byte of pixel data and extract the
// corresponding entry from the palette
usData = *((uint16_t *)pucData);
pucData += 2;
// Translate this palette entry and write it to the screen
*pWrite++ = usData;
}
}
}
}
//*****************************************************************************
//
//! Draws a horizontal line.
//!
//! \param pvDisplayData is a pointer to the driver-specific data for this
//! display driver.
//! \param lX1 is the X coordinate of the start of the line.
//! \param lX2 is the X coordinate of the end of the line.
//! \param lY is the Y coordinate of the line.
//! \param ulValue is the color of the line.
//!
//! This function draws a horizontal line on the display. The coordinates of
//! the line are assumed to be within the extents of the display.
//!
//! \return None.
//
//*****************************************************************************
static void Crystalfontz128x128_LineDrawH(void *pvDisplayData, int32_t lX1, int32_t lX2,
int32_t lY, uint32_t ulValue)
{
if (lX1 & 1) { // starts at an odd coordinate: fill in first pixel
Lcd_buffer[lY][lX1] = ulValue;
lX1++;
}
if (!(lX2 & 1)) { // ends at an even coordinate: fill in last pixel
Lcd_buffer[lY][lX2] = ulValue;
lX2--;
}
// fill in the bulk of the line 2 pixels at a time
uint32_t *pWrite = (uint32_t*)&Lcd_buffer[lY][lX1]; // pointer to the start of the line
uint32_t fill = ulValue | (ulValue << 16);
for (; lX1 < lX2; lX1 += 2) {
*pWrite++ = fill;
}
}
//*****************************************************************************
//
//! Draws a vertical line.
//!
//! \param pvDisplayData is a pointer to the driver-specific data for this
//! display driver.
//! \param lX is the X coordinate of the line.
//! \param lY1 is the Y coordinate of the start of the line.
//! \param lY2 is the Y coordinate of the end of the line.
//! \param ulValue is the color of the line.
//!
//! This function draws a vertical line on the display. The coordinates of the
//! line are assumed to be within the extents of the display.
//!
//! \return None.
//
//*****************************************************************************
static void Crystalfontz128x128_LineDrawV(void *pvDisplayData, int32_t lX, int32_t lY1,
int32_t lY2, uint32_t ulValue)
{
// fill the line
for (; lY1 <= lY2; lY1++) {
Lcd_buffer[lY1][lX] = ulValue;
}
}
//*****************************************************************************
//
//! Fills a rectangle.
//!
//! \param pvDisplayData is a pointer to the driver-specific data for this
//! display driver.
//! \param pRect is a pointer to the structure describing the rectangle.
//! \param ulValue is the color of the rectangle.
//!
//! This function fills a rectangle on the display. The coordinates of the
//! rectangle are assumed to be within the extents of the display, and the
//! rectangle specification is fully inclusive (in other words, both sXMin and
//! sXMax are drawn, along with sYMin and sYMax).
//!
//! \return None.
//
//*****************************************************************************
static void Crystalfontz128x128_RectFill(void *pvDisplayData, const tRectangle *pRect,
uint32_t ulValue)
{
int32_t lX1 = pRect->i16XMin;
int32_t lX2 = pRect->i16XMax;
int32_t lY1 = pRect->i16YMin;
int32_t lY2 = pRect->i16YMax;
uint32_t i;
if (lX1 & 1) { // starts at an odd coordinate: fill in first column
for (i = lY1; i <= lY2; i++) {
Lcd_buffer[i][lX1] = ulValue;
}
lX1++;
}
if (!(lX2 & 1)) { // ends at an even coordinate: fill in last column
for (i = lY1; i <= lY2; i++) {
Lcd_buffer[i][lX2] = ulValue;
}
lX2--;
}
// fill the bulk of the rectangle
uint32_t fill = ulValue | (ulValue << 16);
for (; lY1 <= lY2; lY1++) {
// fill 2 pixels at a time
uint32_t *pWrite = (uint32_t*)&Lcd_buffer[lY1][lX1]; // pointer to the start of the line
for (i = lX1; i < lX2; i += 2) {
*pWrite++ = fill;
}
}
}
//*****************************************************************************
//
//! Translates a 24-bit RGB color to a display driver-specific color.
//!
//! \param pvDisplayData is a pointer to the driver-specific data for this
//! display driver.
//! \param ulValue is the 24-bit RGB color. The least-significant byte is the
//! blue channel, the next byte is the green channel, and the third byte is the
//! red channel.
//!
//! This function translates a 24-bit RGB color into a value that can be
//! written into the display's frame buffer in order to reproduce that color,
//! or the closest possible approximation of that color.
//!
//! \return Returns the display-driver specific color.
//
//*****************************************************************************
static uint32_t Crystalfontz128x128_ColorTranslate(void *pvDisplayData,
uint32_t ulValue)
{
//
// Translate from a 24-bit RGB color to a 5-6-5 RGB color.
//
uint32_t rgb565 =
((((ulValue) & 0x00f80000) >> 8) |
(((ulValue) & 0x0000fc00) >> 5) |
(((ulValue) & 0x000000f8) >> 3));
return (rgb565 >> 8) | ((rgb565 << 8) & 0xff00); // swap bytes
}
//*****************************************************************************
//
//! Flushes any cached drawing operations.
//!
//! \param pvDisplayData is a pointer to the driver-specific data for this
//! display driver.
//!
//! This functions flushes any cached drawing operations to the display. This
//! is useful when a local frame buffer is used for drawing operations, and the
//! flush would copy the local frame buffer to the display.
//!
//! Gene Bogdanov: Added local frame buffer.
//!
//! \return None.
//
//*****************************************************************************
static void
Crystalfontz128x128_Flush(void *pvDisplayData)
{
Crystalfontz128x128_SetDrawFrame(0, 0, LCD_HORIZONTAL_MAX-1, LCD_VERTICAL_MAX-1);
HAL_LCD_writeCommand(CM_RAMWR);
int i;
uint16_t *pRead = &Lcd_buffer[0][0];
uint32_t data;
for (i = 0; i < LCD_HORIZONTAL_MAX * LCD_VERTICAL_MAX; i++)
{
data = *pRead++;
HAL_LCD_writeData((uint8_t)data);
HAL_LCD_writeData((uint8_t)(data >> 8));
}
}
//*****************************************************************************
//
//! Send command to clear screen.
//!
//! \param pvDisplayData is a pointer to the driver-specific data for this
//! display driver.
//!
//! This function does a clear screen and the Display Buffer contents
//! are initialized to the current background color.
//!
//! \return None.
//
//*****************************************************************************
//static void
//Crystalfontz128x128_ClearScreen (void *pvDisplayData, uint16_t ulValue)
//{
// tRectangle rect = { 0, 0, LCD_VERTICAL_MAX-1, LCD_VERTICAL_MAX-1};
// Crystalfontz128x128_RectFill(&pvDisplayData, &rect, ulValue);
//}
//*****************************************************************************
//
//! The display structure that describes the driver for the Kitronix
//! K350QVG-V1-F TFT panel with an SSD2119 controller.
//
//*****************************************************************************
const tDisplay g_sCrystalfontz128x128 =
{
sizeof(tDisplay),
0,
LCD_VERTICAL_MAX,
LCD_HORIZONTAL_MAX,
Crystalfontz128x128_PixelDraw,
Crystalfontz128x128_PixelDrawMultiple,
Crystalfontz128x128_LineDrawH,
Crystalfontz128x128_LineDrawV,
Crystalfontz128x128_RectFill,
Crystalfontz128x128_ColorTranslate,
Crystalfontz128x128_Flush
};
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