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SylvanArnold
2025-04-29 13:52:54 +02:00
committed by Sylvan Arnold
parent 244e516bd8
commit 32618389d1
985 changed files with 1 additions and 1 deletions
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pico-sensor/McuLib/src/McuST7735.c Normal file
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/*
* Copyright (c) 2023, Erich Styger
*
* SPDX-License-Identifier: BSD-3-Clause
* Register values and driver IC initialization: https://github.com/afiskon/stm32-st7735
*/
#include "McuST7735.h"
#if McuST7735_CONFIG_IS_ENABLED
#include "McuSPI.h"
#include "McuGPIO.h"
#include "McuLog.h"
#include "McuWait.h"
#include <stdbool.h>
#define McuST7735_DELAY 0x80
#define McuST7735_MADCTL_MY 0x80
#define McuST7735_MADCTL_MX 0x40
#define McuST7735_MADCTL_MV 0x20
#define McuST7735_MADCTL_ML 0x10
#define McuST7735_MADCTL_RGB 0x00
#define McuST7735_MADCTL_BGR 0x08
#define McuST7735_MADCTL_MH 0x04
#define McuST7735_NOP 0x00
#define McuST7735_SWRESET 0x01
#define McuST7735_RDDID 0x04
#define McuST7735_RDDST 0x09
#define McuST7735_SLPIN 0x10
#define McuST7735_SLPOUT 0x11
#define McuST7735_PTLON 0x12
#define McuST7735_NORON 0x13
#define McuST7735_INVOFF 0x20
#define McuST7735_INVON 0x21
#define McuST7735_DISPOFF 0x28
#define McuST7735_DISPON 0x29
#define McuST7735_CASET 0x2A
#define McuST7735_RASET 0x2B
#define McuST7735_RAMWR 0x2C
#define McuST7735_RAMRD 0x2E
#define McuST7735_PTLAR 0x30
#define McuST7735_COLMOD 0x3A
#define McuST7735_MADCTL 0x36
#define McuST7735_FRMCTR1 0xB1
#define McuST7735_FRMCTR2 0xB2
#define McuST7735_FRMCTR3 0xB3
#define McuST7735_INVCTR 0xB4
#define McuST7735_DISSET5 0xB6
#define McuST7735_PWCTR1 0xC0
#define McuST7735_PWCTR2 0xC1
#define McuST7735_PWCTR3 0xC2
#define McuST7735_PWCTR4 0xC3
#define McuST7735_PWCTR5 0xC4
#define McuST7735_VMCTR1 0xC5
#define McuST7735_RDID1 0xDA
#define McuST7735_RDID2 0xDB
#define McuST7735_RDID3 0xDC
#define McuST7735_RDID4 0xDD
#define McuST7735_PWCTR6 0xFC
#define McuST7735_GMCTRP1 0xE0
#define McuST7735_GMCTRN1 0xE1
static int16_t curr_width; /*!< current display with, based on rotation */
static int16_t curr_height; /*!< current display height, based on rotation */
static uint8_t curr_rotation; /*!< current display rotation: 0, 1, 2 or 4 */
static uint8_t curr_xstart; /*!< current x starting position, based on rotation */
static uint8_t curr_ystart; /*!< current y starting position, based on rotation */
/* different displays have different column and row start values */
#if McuST7735_CONFIG_DISPLAY_TYPE==MCUST7735_TYPE_160X80
#define McuST7735_HW_COL_START 24
#define McuST7735_HW_ROW_START 0
#elif McuST7735_CONFIG_DISPLAY_TYPE==MCUST7735_TYPE_128X128
#define McuST7735_HW_COL_START 2
#define McuST7735_HW_ROW_START 3
#elif McuST7735_CONFIG_DISPLAY_TYPE==MCUST7735_TYPE_160x128
#define McuST7735_HW_COL_START 0
#define McuST7735_HW_ROW_START 0
#endif
static McuGPIO_Handle_t csPin; /* CS pin, LOW active, used to select device (chip select) */
static McuGPIO_Handle_t resetPin; /* RESET pin, LOW active, used to reset device */
static McuGPIO_Handle_t dcPin; /* DC pin (data or command), LOW active, used to send commands (low) and data (high) */
#define McuST7735_Select() McuGPIO_SetLow(csPin)
#define McuST7735_Unselect() McuGPIO_SetHigh(csPin)
#define McuST7735_SetDataMode() McuGPIO_SetHigh(dcPin)
#define McuST7735_SetCmdMode() McuGPIO_SetLow(dcPin)
uint16_t McuST7735_GetWidth(void) {
return curr_width;
}
uint16_t McuST7735_GetHeight(void) {
return curr_height;
}
static uint8_t McuST7735_WriteSPI(unsigned char *data, size_t dataSize) {
McuSPI_SendReceiveBlock(data, NULL, dataSize);
return ERR_OK;
}
static void McuST7735_WriteCommand(uint8_t cmd) {
uint8_t error = 0;
McuST7735_SetCmdMode();
error = McuST7735_WriteSPI(&cmd, sizeof(cmd));
}
static void McuST7735_WriteData(uint8_t* data, size_t dataSize) {
McuST7735_SetDataMode();
McuST7735_WriteSPI(data, dataSize);
}
void McuST7735_SetAddressWindow(uint8_t x0, uint8_t y0, uint8_t x1, uint8_t y1) {
McuST7735_WriteCommand(McuST7735_CASET); /* column address set */
uint8_t data[] = { 0x00, x0 + curr_xstart, 0x00, x1 + curr_xstart };
McuST7735_WriteData(data, sizeof(data));
McuST7735_WriteCommand(McuST7735_RASET); /* row address set */
data[1] = y0 + curr_ystart;
data[3] = y1 + curr_ystart;
McuST7735_WriteData(data, sizeof(data));
McuST7735_WriteCommand(McuST7735_RAMWR); /* write to RAM */
}
void McuST7735_SetRotation(uint8_t m) {
uint8_t madctl = 0;
curr_rotation = m%4; /* can only 0-3 */
switch (curr_rotation) {
case 0:
#if McuST7735_CONFIG_DISPLAY_TYPE==MCUST7735_TYPE_160X80
madctl = McuST7735_MADCTL_MX | McuST7735_MADCTL_MY | McuST7735_MADCTL_BGR;
#else
madctl = McuST7735_MADCTL_MX | McuST7735_MADCTL_MY | McuST7735_MADCTL_RGB;
curr_height = McuST7735_GetHwHeight();
curr_width = McuST7735_GetHwWidth();
curr_xstart = McuST7735_HW_COL_START;
curr_ystart = McuST7735_HW_ROW_START;
#endif
break;
case 1:
#if McuST7735_CONFIG_DISPLAY_TYPE==MCUST7735_TYPE_160X80
madctl = McuST7735_MADCTL_MY | McuST7735_MADCTL_MV | McuST7735_MADCTL_BGR;
#else
madctl = McuST7735_MADCTL_MY | McuST7735_MADCTL_MV | McuST7735_MADCTL_RGB;
curr_width = McuST7735_GetHwHeight();
curr_height = McuST7735_GetHwWidth();
curr_ystart = McuST7735_HW_COL_START;
curr_xstart = McuST7735_HW_ROW_START;
#endif
break;
case 2:
#if McuST7735_CONFIG_DISPLAY_TYPE==MCUST7735_TYPE_160X80
madctl = McuST7735_MADCTL_BGR;
#else
madctl = McuST7735_MADCTL_RGB;
curr_height = McuST7735_GetHwHeight();
curr_width = McuST7735_GetHwWidth();
curr_xstart = McuST7735_HW_COL_START;
curr_ystart = McuST7735_HW_ROW_START;
#endif
break;
case 3:
#if McuST7735_CONFIG_DISPLAY_TYPE==MCUST7735_TYPE_160X80
madctl = McuST7735_MADCTL_MX | McuST7735_MADCTL_MV | McuST7735_MADCTL_BGR;
#else
madctl = McuST7735_MADCTL_MX | McuST7735_MADCTL_MV | McuST7735_MADCTL_RGB;
curr_width = McuST7735_GetHwHeight();
curr_height = McuST7735_GetHwWidth();
curr_ystart = McuST7735_HW_COL_START;
curr_xstart = McuST7735_HW_ROW_START;
#endif
break;
} /* switch */
McuST7735_Select();
McuST7735_WriteCommand(McuST7735_MADCTL);
McuST7735_WriteData(&madctl,1);
McuST7735_Unselect();
}
void McuST7735_DrawPixel(uint16_t x, uint16_t y, uint16_t color) {
if((x >= curr_width) || (y >= curr_height)) {
return;
}
McuST7735_Select();
McuST7735_SetAddressWindow(x, y, x+1, y+1);
uint8_t data[] = { color>>8, color&0xFF };
McuST7735_WriteData(data, sizeof(data));
McuST7735_Unselect();
}
void McuST7735_FillRectangle(uint16_t x, uint16_t y, uint16_t w, uint16_t h, uint16_t color) {
if((x >= curr_width) || (y >= curr_height)) {
return;
}
if((x + w - 1) >= curr_width) {
w = curr_width - x;
}
if((y + h - 1) >= curr_height) {
h = curr_height - y;
}
McuST7735_Select();
McuST7735_SetAddressWindow(x, y, x+w-1, y+h-1);
uint8_t data[] = { color >> 8, color & 0xFF };
McuST7735_SetDataMode();
for(y = h; y > 0; y--) {
for(x = w; x > 0; x--) {
McuST7735_WriteSPI(data, sizeof(data));
}
}
McuST7735_Unselect();
}
void McuST7735_InvertColors(bool invert) {
McuST7735_Select();
McuST7735_WriteCommand(invert ? McuST7735_INVON : McuST7735_INVOFF);
McuST7735_Unselect();
}
void McuST7735_Reset(void) {
McuGPIO_SetLow(resetPin);
McuWait_Waitms(5);
McuGPIO_SetHigh(resetPin);
}
static void SendDisplayInitCommands(const uint8_t *addr) {
uint8_t numCommands, numArgs;
uint16_t ms;
numCommands = *addr++;
while(numCommands--) {
uint8_t cmd = *addr++;
McuST7735_WriteCommand(cmd);
numArgs = *addr++;
/* If high bit set, delay follows args */
ms = numArgs & McuST7735_DELAY;
numArgs &= ~McuST7735_DELAY;
if(numArgs) {
McuST7735_WriteData((uint8_t*)addr, numArgs);
addr += numArgs;
}
if(ms) {
ms = *addr++;
if(ms == 255) {
ms = 500;
}
McuWait_Waitms(ms);
}
}
}
static const uint8_t
init_cmds1[] = { // Init for 7735R, part 1 (red or green tab)
15, // 15 commands in list:
McuST7735_SWRESET, McuST7735_DELAY, // 1: Software reset, 0 args, w/delay
150, // 150 ms delay
McuST7735_SLPOUT , McuST7735_DELAY, // 2: Out of sleep mode, 0 args, w/delay
255, // 500 ms delay
McuST7735_FRMCTR1, 3 , // 3: Frame rate ctrl - normal mode, 3 args:
0x01, 0x2C, 0x2D, // Rate = fosc/(1x2+40) * (LINE+2C+2D)
McuST7735_FRMCTR2, 3 , // 4: Frame rate control - idle mode, 3 args:
0x01, 0x2C, 0x2D, // Rate = fosc/(1x2+40) * (LINE+2C+2D)
McuST7735_FRMCTR3, 6 , // 5: Frame rate ctrl - partial mode, 6 args:
0x01, 0x2C, 0x2D, // Dot inversion mode
0x01, 0x2C, 0x2D, // Line inversion mode
McuST7735_INVCTR , 1 , // 6: Display inversion ctrl, 1 arg, no delay:
0x07, // No inversion
McuST7735_PWCTR1 , 3 , // 7: Power control, 3 args, no delay:
0xA2,
0x02, // -4.6V
0x84, // AUTO mode
McuST7735_PWCTR2 , 1 , // 8: Power control, 1 arg, no delay:
0xC5, // VGH25 = 2.4C VGSEL = -10 VGH = 3 * AVDD
McuST7735_PWCTR3 , 2 , // 9: Power control, 2 args, no delay:
0x0A, // Opamp current small
0x00, // Boost frequency
McuST7735_PWCTR4 , 2 , // 10: Power control, 2 args, no delay:
0x8A, // BCLK/2, Opamp current small & Medium low
0x2A,
McuST7735_PWCTR5 , 2 , // 11: Power control, 2 args, no delay:
0x8A, 0xEE,
McuST7735_VMCTR1 , 1 , // 12: Power control, 1 arg, no delay:
0x0E,
McuST7735_INVOFF , 0 , // 13: Don't invert display, no args, no delay
McuST7735_COLMOD , 1 , // 15: set color mode, 1 arg, no delay:
0x05 }, // 16-bit color
#if McuST7735_CONFIG_DISPLAY_TYPE==MCUST7735_TYPE_128X128 || McuST7735_CONFIG_DISPLAY_TYPE==MCUST7735_TYPE_160X128
init_cmds2[] = { // Init for 7735R, part 2 (1.44" display)
2, // 2 commands in list:
McuST7735_CASET , 4 , // 1: Column addr set, 4 args, no delay:
0x00, 0x00, // XSTART = 0
0x00, 0x7F, // XEND = 127
McuST7735_RASET , 4 , // 2: Row addr set, 4 args, no delay:
0x00, 0x00, // XSTART = 0
0x00, 0x7F }, // XEND = 127
#endif
#if McuST7735_CONFIG_DISPLAY_TYPE==MCUST7735_TYPE_160X80
init_cmds2[] = { // Init for 7735S, part 2 (160x80 display)
3, // 3 commands in list:
McuST7735_CASET , 4 , // 1: Column addr set, 4 args, no delay:
0x00, 0x00, // XSTART = 0
0x00, 0x4F, // XEND = 79
McuST7735_RASET , 4 , // 2: Row addr set, 4 args, no delay:
0x00, 0x00, // XSTART = 0
0x00, 0x9F , // XEND = 159
McuST7735_INVON, 0 }, // 3: Invert colors
#endif
init_cmds3[] = { // Init for 7735R, part 3 (red or green tab)
4, // 4 commands in list:
McuST7735_GMCTRP1, 16 , // 1: Magical unicorn dust, 16 args, no delay:
0x02, 0x1c, 0x07, 0x12,
0x37, 0x32, 0x29, 0x2d,
0x29, 0x25, 0x2B, 0x39,
0x00, 0x01, 0x03, 0x10,
McuST7735_GMCTRN1, 16 , // 2: Sparkles and rainbows, 16 args, no delay:
0x03, 0x1d, 0x07, 0x06,
0x2E, 0x2C, 0x29, 0x2D,
0x2E, 0x2E, 0x37, 0x3F,
0x00, 0x00, 0x02, 0x10,
McuST7735_NORON , McuST7735_DELAY, // 3: Normal display on, no args, w/delay
10, // 10 ms delay
McuST7735_DISPON , McuST7735_DELAY, // 4: Main screen turn on, no args w/delay
100 }; // 100 ms delay
static void InitDisplay(uint8_t rotation) {
McuST7735_Select();
McuST7735_Reset();
SendDisplayInitCommands(init_cmds1);
SendDisplayInitCommands(init_cmds2);
SendDisplayInitCommands(init_cmds3);
#if McuST7735_CONFIG_DISPLAY_TYPE==MCUST7735_TYPE_160X80
/* not tested yet, might not work! */
uint8_t data = 0xC0;
ST7735_Select();
ST7735_WriteCommand(ST7735_MADCTL);
ST7735_WriteData(&data,1);
ST7735_Unselect();
#endif
McuST7735_SetRotation (rotation);
McuST7735_Unselect();
}
static void InitPins(void) {
McuGPIO_Config_t config;
McuGPIO_GetDefaultConfig(&config);
#if McuLib_CONFIG_CPU_IS_ESP32
config.hw.pin = McuST7735_CONFIG_CS_PIN_NUMBER;
#elif McuLib_CONFIG_CPU_IS_RPxxxx
config.hw.pin = McuST7735_CONFIG_CS_PIN_NUMBER;
#else
config.hw.gpio = McuST7735_CONFIG_CS_PIN_GPIO;
config.hw.port = McuST7735_CONFIG_CS_PIN_PORT;
config.hw.pin = McuST7735_CONFIG_CS_PIN_NUMBER;
#endif
config.isInput = false;
config.isHighOnInit = true; /* CS is Low active, set it to high (deactivated) */
csPin = McuGPIO_InitGPIO(&config);
if (csPin==NULL) {
McuLog_fatal("failed initializing display CS pin");
for(;;) {} /* error */
}
#if McuLib_CONFIG_CPU_IS_ESP32
config.hw.pin = McuST7735_CONFIG_DC_PIN_NUMBER;
#elif McuLib_CONFIG_CPU_IS_RPxxxx
config.hw.pin = McuST7735_CONFIG_DC_PIN_NUMBER;
#else
config.hw.gpio = McuST7735_CONFIG_DC_PIN_GPIO;
config.hw.port = McuST7735_CONFIG_DC_PIN_PORT;
config.hw.pin = McuST7735_CONFIG_DC_PIN_NUMBER;
#endif
config.isInput = false;
config.isHighOnInit = false; /* DC initially low, command mode */
dcPin = McuGPIO_InitGPIO(&config);
if (dcPin==NULL) {
McuLog_fatal("failed initializing display DC pin");
for(;;) {} /* error */
}
#if McuLib_CONFIG_CPU_IS_ESP32
config.hw.pin = McuST7735_CONFIG_RESET_PIN_NUMBER;
#elif McuLib_CONFIG_CPU_IS_RPxxxx
config.hw.pin = McuST7735_CONFIG_RESET_PIN_NUMBER;
#else
config.hw.gpio = McuST7735_CONFIG_RESET_PIN_GPIO;
config.hw.port = McuST7735_CONFIG_RESET_PIN_PORT;
config.hw.pin = McuST7735_CONFIG_RESET_PIN_NUMBER;
#endif
config.isInput = false;
config.isHighOnInit = true; /* RESET is LOW active */
resetPin = McuGPIO_InitGPIO(&config);
if (resetPin==NULL) {
McuLog_fatal("failed initializing display RESET pin");
for(;;) {} /* error */
}
}
void McuST7735_Init(void) {
InitPins();
InitDisplay(0);
}
#endif /* McuST7735_CONFIG_IS_ENABLED */